.
/**
* @package mod_data
* @copyright 1999 onwards Martin Dougiamas {@link http://moodle.com}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
// Some constants
define ('DATA_MAX_ENTRIES', 50);
define ('DATA_PERPAGE_SINGLE', 1);
define ('DATA_FIRSTNAME', -1);
define ('DATA_LASTNAME', -2);
define ('DATA_APPROVED', -3);
define ('DATA_TIMEADDED', 0);
define ('DATA_TIMEMODIFIED', -4);
define ('DATA_CAP_EXPORT', 'mod/data:viewalluserpresets');
define('DATA_PRESET_COMPONENT', 'mod_data');
define('DATA_PRESET_FILEAREA', 'site_presets');
define('DATA_PRESET_CONTEXT', SYSCONTEXTID);
// Users having assigned the default role "Non-editing teacher" can export database records
// Using the mod/data capability "viewalluserpresets" existing in Moodle 1.9.x.
// In Moodle >= 2, new roles may be introduced and used instead.
/**
* @package mod_data
* @copyright 1999 onwards Martin Dougiamas {@link http://moodle.com}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class data_field_base { // Base class for Database Field Types (see field/*/field.class.php)
/** @var string Subclasses must override the type with their name */
var $type = 'unknown';
/** @var object The database object that this field belongs to */
var $data = NULL;
/** @var object The field object itself, if we know it */
var $field = NULL;
/** @var int Width of the icon for this fieldtype */
var $iconwidth = 16;
/** @var int Width of the icon for this fieldtype */
var $iconheight = 16;
/** @var object course module or cmifno */
var $cm;
/** @var object activity context */
var $context;
/**
* Constructor function
*
* @global object
* @uses CONTEXT_MODULE
* @param int $field
* @param int $data
* @param int $cm
*/
function __construct($field=0, $data=0, $cm=0) { // Field or data or both, each can be id or object
global $DB;
if (empty($field) && empty($data)) {
print_error('missingfield', 'data');
}
if (!empty($field)) {
if (is_object($field)) {
$this->field = $field; // Programmer knows what they are doing, we hope
} else if (!$this->field = $DB->get_record('data_fields', array('id'=>$field))) {
print_error('invalidfieldid', 'data');
}
if (empty($data)) {
if (!$this->data = $DB->get_record('data', array('id'=>$this->field->dataid))) {
print_error('invalidid', 'data');
}
}
}
if (empty($this->data)) { // We need to define this properly
if (!empty($data)) {
if (is_object($data)) {
$this->data = $data; // Programmer knows what they are doing, we hope
} else if (!$this->data = $DB->get_record('data', array('id'=>$data))) {
print_error('invalidid', 'data');
}
} else { // No way to define it!
print_error('missingdata', 'data');
}
}
if ($cm) {
$this->cm = $cm;
} else {
$this->cm = get_coursemodule_from_instance('data', $this->data->id);
}
if (empty($this->field)) { // We need to define some default values
$this->define_default_field();
}
$this->context = context_module::instance($this->cm->id);
}
/**
* This field just sets up a default field object
*
* @return bool
*/
function define_default_field() {
global $OUTPUT;
if (empty($this->data->id)) {
echo $OUTPUT->notification('Programmer error: dataid not defined in field class');
}
$this->field = new stdClass();
$this->field->id = 0;
$this->field->dataid = $this->data->id;
$this->field->type = $this->type;
$this->field->param1 = '';
$this->field->param2 = '';
$this->field->param3 = '';
$this->field->name = '';
$this->field->description = '';
return true;
}
/**
* Set up the field object according to data in an object. Now is the time to clean it!
*
* @return bool
*/
function define_field($data) {
$this->field->type = $this->type;
$this->field->dataid = $this->data->id;
$this->field->name = trim($data->name);
$this->field->description = trim($data->description);
if (isset($data->param1)) {
$this->field->param1 = trim($data->param1);
}
if (isset($data->param2)) {
$this->field->param2 = trim($data->param2);
}
if (isset($data->param3)) {
$this->field->param3 = trim($data->param3);
}
if (isset($data->param4)) {
$this->field->param4 = trim($data->param4);
}
if (isset($data->param5)) {
$this->field->param5 = trim($data->param5);
}
return true;
}
/**
* Insert a new field in the database
* We assume the field object is already defined as $this->field
*
* @global object
* @return bool
*/
function insert_field() {
global $DB, $OUTPUT;
if (empty($this->field)) {
echo $OUTPUT->notification('Programmer error: Field has not been defined yet! See define_field()');
return false;
}
$this->field->id = $DB->insert_record('data_fields',$this->field);
// Trigger an event for creating this field.
$event = \mod_data\event\field_created::create(array(
'objectid' => $this->field->id,
'context' => $this->context,
'other' => array(
'fieldname' => $this->field->name,
'dataid' => $this->data->id
)
));
$event->trigger();
return true;
}
/**
* Update a field in the database
*
* @global object
* @return bool
*/
function update_field() {
global $DB;
$DB->update_record('data_fields', $this->field);
// Trigger an event for updating this field.
$event = \mod_data\event\field_updated::create(array(
'objectid' => $this->field->id,
'context' => $this->context,
'other' => array(
'fieldname' => $this->field->name,
'dataid' => $this->data->id
)
));
$event->trigger();
return true;
}
/**
* Delete a field completely
*
* @global object
* @return bool
*/
function delete_field() {
global $DB;
if (!empty($this->field->id)) {
// Get the field before we delete it.
$field = $DB->get_record('data_fields', array('id' => $this->field->id));
$this->delete_content();
$DB->delete_records('data_fields', array('id'=>$this->field->id));
// Trigger an event for deleting this field.
$event = \mod_data\event\field_deleted::create(array(
'objectid' => $this->field->id,
'context' => $this->context,
'other' => array(
'fieldname' => $this->field->name,
'dataid' => $this->data->id
)
));
$event->add_record_snapshot('data_fields', $field);
$event->trigger();
}
return true;
}
/**
* Print the relevant form element in the ADD template for this field
*
* @global object
* @param int $recordid
* @return string
*/
function display_add_field($recordid=0){
global $DB;
if ($recordid){
$content = $DB->get_field('data_content', 'content', array('fieldid'=>$this->field->id, 'recordid'=>$recordid));
} else {
$content = '';
}
// beware get_field returns false for new, empty records MDL-18567
if ($content===false) {
$content='';
}
$str = '
';
$str .= '';
$str .= '';
$str .= '
';
return $str;
}
/**
* Print the relevant form element to define the attributes for this field
* viewable by teachers only.
*
* @global object
* @global object
* @return void Output is echo'd
*/
function display_edit_field() {
global $CFG, $DB, $OUTPUT;
if (empty($this->field)) { // No field has been defined yet, try and make one
$this->define_default_field();
}
echo $OUTPUT->box_start('generalbox boxaligncenter boxwidthwide');
echo '';
echo $OUTPUT->box_end();
}
/**
* Display the content of the field in browse mode
*
* @global object
* @param int $recordid
* @param object $template
* @return bool|string
*/
function display_browse_field($recordid, $template) {
global $DB;
if ($content = $DB->get_record('data_content', array('fieldid'=>$this->field->id, 'recordid'=>$recordid))) {
if (isset($content->content)) {
$options = new stdClass();
if ($this->field->param1 == '1') { // We are autolinking this field, so disable linking within us
//$content->content = ''.$content->content.'';
//$content->content1 = FORMAT_HTML;
$options->filter=false;
}
$options->para = false;
$str = format_text($content->content, $content->content1, $options);
} else {
$str = '';
}
return $str;
}
return false;
}
/**
* Update the content of one data field in the data_content table
* @global object
* @param int $recordid
* @param mixed $value
* @param string $name
* @return bool
*/
function update_content($recordid, $value, $name=''){
global $DB;
$content = new stdClass();
$content->fieldid = $this->field->id;
$content->recordid = $recordid;
$content->content = clean_param($value, PARAM_NOTAGS);
if ($oldcontent = $DB->get_record('data_content', array('fieldid'=>$this->field->id, 'recordid'=>$recordid))) {
$content->id = $oldcontent->id;
return $DB->update_record('data_content', $content);
} else {
return $DB->insert_record('data_content', $content);
}
}
/**
* Delete all content associated with the field
*
* @global object
* @param int $recordid
* @return bool
*/
function delete_content($recordid=0) {
global $DB;
if ($recordid) {
$conditions = array('fieldid'=>$this->field->id, 'recordid'=>$recordid);
} else {
$conditions = array('fieldid'=>$this->field->id);
}
$rs = $DB->get_recordset('data_content', $conditions);
if ($rs->valid()) {
$fs = get_file_storage();
foreach ($rs as $content) {
$fs->delete_area_files($this->context->id, 'mod_data', 'content', $content->id);
}
}
$rs->close();
return $DB->delete_records('data_content', $conditions);
}
/**
* Check if a field from an add form is empty
*
* @param mixed $value
* @param mixed $name
* @return bool
*/
function notemptyfield($value, $name) {
return !empty($value);
}
/**
* Just in case a field needs to print something before the whole form
*/
function print_before_form() {
}
/**
* Just in case a field needs to print something after the whole form
*/
function print_after_form() {
}
/**
* Returns the sortable field for the content. By default, it's just content
* but for some plugins, it could be content 1 - content4
*
* @return string
*/
function get_sort_field() {
return 'content';
}
/**
* Returns the SQL needed to refer to the column. Some fields may need to CAST() etc.
*
* @param string $fieldname
* @return string $fieldname
*/
function get_sort_sql($fieldname) {
return $fieldname;
}
/**
* Returns the name/type of the field
*
* @return string
*/
function name() {
return get_string('name'.$this->type, 'data');
}
/**
* Prints the respective type icon
*
* @global object
* @return string
*/
function image() {
global $OUTPUT;
$params = array('d'=>$this->data->id, 'fid'=>$this->field->id, 'mode'=>'display', 'sesskey'=>sesskey());
$link = new moodle_url('/mod/data/field.php', $params);
$str = '';
$str .= 'iconheight.'" width="'.$this->iconwidth.'" alt="'.$this->type.'" title="'.$this->type.'" />';
return $str;
}
/**
* Per default, it is assumed that fields support text exporting.
* Override this (return false) on fields not supporting text exporting.
*
* @return bool true
*/
function text_export_supported() {
return true;
}
/**
* Per default, return the record's text value only from the "content" field.
* Override this in fields class if necesarry.
*
* @param string $record
* @return string
*/
function export_text_value($record) {
if ($this->text_export_supported()) {
return $record->content;
}
}
/**
* @param string $relativepath
* @return bool false
*/
function file_ok($relativepath) {
return false;
}
}
/**
* Given a template and a dataid, generate a default case template
*
* @global object
* @param object $data
* @param string template [addtemplate, singletemplate, listtempalte, rsstemplate]
* @param int $recordid
* @param bool $form
* @param bool $update
* @return bool|string
*/
function data_generate_default_template(&$data, $template, $recordid=0, $form=false, $update=true) {
global $DB;
if (!$data && !$template) {
return false;
}
if ($template == 'csstemplate' or $template == 'jstemplate' ) {
return '';
}
// get all the fields for that database
if ($fields = $DB->get_records('data_fields', array('dataid'=>$data->id), 'id')) {
$table = new html_table();
$table->attributes['class'] = 'mod-data-default-template';
$table->colclasses = array('template-field', 'template-token');
$table->data = array();
foreach ($fields as $field) {
if ($form) { // Print forms instead of data
$fieldobj = data_get_field($field, $data);
$token = $fieldobj->display_add_field($recordid);
} else { // Just print the tag
$token = '[['.$field->name.']]';
}
$table->data[] = array(
$field->name.': ',
$token
);
}
if ($template == 'listtemplate') {
$cell = new html_table_cell('##edit## ##more## ##delete## ##approve## ##disapprove## ##export##');
$cell->colspan = 2;
$cell->attributes['class'] = 'controls';
$table->data[] = new html_table_row(array($cell));
} else if ($template == 'singletemplate') {
$cell = new html_table_cell('##edit## ##delete## ##approve## ##disapprove## ##export##');
$cell->colspan = 2;
$cell->attributes['class'] = 'controls';
$table->data[] = new html_table_row(array($cell));
} else if ($template == 'asearchtemplate') {
$row = new html_table_row(array(get_string('authorfirstname', 'data').': ', '##firstname##'));
$row->attributes['class'] = 'searchcontrols';
$table->data[] = $row;
$row = new html_table_row(array(get_string('authorlastname', 'data').': ', '##lastname##'));
$row->attributes['class'] = 'searchcontrols';
$table->data[] = $row;
}
$str = '';
if ($template == 'listtemplate'){
$str .= '##delcheck##';
$str .= html_writer::empty_tag('br');
}
$str .= html_writer::start_tag('div', array('class' => 'defaulttemplate'));
$str .= html_writer::table($table);
$str .= html_writer::end_tag('div');
if ($template == 'listtemplate'){
$str .= html_writer::empty_tag('hr');
}
if ($update) {
$newdata = new stdClass();
$newdata->id = $data->id;
$newdata->{$template} = $str;
$DB->update_record('data', $newdata);
$data->{$template} = $str;
}
return $str;
}
}
/**
* Search for a field name and replaces it with another one in all the
* form templates. Set $newfieldname as '' if you want to delete the
* field from the form.
*
* @global object
* @param object $data
* @param string $searchfieldname
* @param string $newfieldname
* @return bool
*/
function data_replace_field_in_templates($data, $searchfieldname, $newfieldname) {
global $DB;
if (!empty($newfieldname)) {
$prestring = '[[';
$poststring = ']]';
$idpart = '#id';
} else {
$prestring = '';
$poststring = '';
$idpart = '';
}
$newdata = new stdClass();
$newdata->id = $data->id;
$newdata->singletemplate = str_ireplace('[['.$searchfieldname.']]',
$prestring.$newfieldname.$poststring, $data->singletemplate);
$newdata->listtemplate = str_ireplace('[['.$searchfieldname.']]',
$prestring.$newfieldname.$poststring, $data->listtemplate);
$newdata->addtemplate = str_ireplace('[['.$searchfieldname.']]',
$prestring.$newfieldname.$poststring, $data->addtemplate);
$newdata->addtemplate = str_ireplace('[['.$searchfieldname.'#id]]',
$prestring.$newfieldname.$idpart.$poststring, $data->addtemplate);
$newdata->rsstemplate = str_ireplace('[['.$searchfieldname.']]',
$prestring.$newfieldname.$poststring, $data->rsstemplate);
return $DB->update_record('data', $newdata);
}
/**
* Appends a new field at the end of the form template.
*
* @global object
* @param object $data
* @param string $newfieldname
*/
function data_append_new_field_to_templates($data, $newfieldname) {
global $DB;
$newdata = new stdClass();
$newdata->id = $data->id;
$change = false;
if (!empty($data->singletemplate)) {
$newdata->singletemplate = $data->singletemplate.' [[' . $newfieldname .']]';
$change = true;
}
if (!empty($data->addtemplate)) {
$newdata->addtemplate = $data->addtemplate.' [[' . $newfieldname . ']]';
$change = true;
}
if (!empty($data->rsstemplate)) {
$newdata->rsstemplate = $data->singletemplate.' [[' . $newfieldname . ']]';
$change = true;
}
if ($change) {
$DB->update_record('data', $newdata);
}
}
/**
* given a field name
* this function creates an instance of the particular subfield class
*
* @global object
* @param string $name
* @param object $data
* @return object|bool
*/
function data_get_field_from_name($name, $data){
global $DB;
$field = $DB->get_record('data_fields', array('name'=>$name, 'dataid'=>$data->id));
if ($field) {
return data_get_field($field, $data);
} else {
return false;
}
}
/**
* given a field id
* this function creates an instance of the particular subfield class
*
* @global object
* @param int $fieldid
* @param object $data
* @return bool|object
*/
function data_get_field_from_id($fieldid, $data){
global $DB;
$field = $DB->get_record('data_fields', array('id'=>$fieldid, 'dataid'=>$data->id));
if ($field) {
return data_get_field($field, $data);
} else {
return false;
}
}
/**
* given a field id
* this function creates an instance of the particular subfield class
*
* @global object
* @param string $type
* @param object $data
* @return object
*/
function data_get_field_new($type, $data) {
global $CFG;
require_once($CFG->dirroot.'/mod/data/field/'.$type.'/field.class.php');
$newfield = 'data_field_'.$type;
$newfield = new $newfield(0, $data);
return $newfield;
}
/**
* returns a subclass field object given a record of the field, used to
* invoke plugin methods
* input: $param $field - record from db
*
* @global object
* @param object $field
* @param object $data
* @param object $cm
* @return object
*/
function data_get_field($field, $data, $cm=null) {
global $CFG;
if ($field) {
require_once('field/'.$field->type.'/field.class.php');
$newfield = 'data_field_'.$field->type;
$newfield = new $newfield($field, $data, $cm);
return $newfield;
}
}
/**
* Given record object (or id), returns true if the record belongs to the current user
*
* @global object
* @global object
* @param mixed $record record object or id
* @return bool
*/
function data_isowner($record) {
global $USER, $DB;
if (!isloggedin()) { // perf shortcut
return false;
}
if (!is_object($record)) {
if (!$record = $DB->get_record('data_records', array('id'=>$record))) {
return false;
}
}
return ($record->userid == $USER->id);
}
/**
* has a user reached the max number of entries?
*
* @param object $data
* @return bool
*/
function data_atmaxentries($data){
if (!$data->maxentries){
return false;
} else {
return (data_numentries($data) >= $data->maxentries);
}
}
/**
* returns the number of entries already made by this user
*
* @global object
* @global object
* @param object $data
* @return int
*/
function data_numentries($data){
global $USER, $DB;
$sql = 'SELECT COUNT(*) FROM {data_records} WHERE dataid=? AND userid=?';
return $DB->count_records_sql($sql, array($data->id, $USER->id));
}
/**
* function that takes in a dataid and adds a record
* this is used everytime an add template is submitted
*
* @global object
* @global object
* @param object $data
* @param int $groupid
* @return bool
*/
function data_add_record($data, $groupid=0){
global $USER, $DB;
$cm = get_coursemodule_from_instance('data', $data->id);
$context = context_module::instance($cm->id);
$record = new stdClass();
$record->userid = $USER->id;
$record->dataid = $data->id;
$record->groupid = $groupid;
$record->timecreated = $record->timemodified = time();
if (has_capability('mod/data:approve', $context)) {
$record->approved = 1;
} else {
$record->approved = 0;
}
$record->id = $DB->insert_record('data_records', $record);
// Trigger an event for creating this record.
$event = \mod_data\event\record_created::create(array(
'objectid' => $record->id,
'context' => $context,
'other' => array(
'dataid' => $data->id
)
));
$event->trigger();
return $record->id;
}
/**
* check the multple existence any tag in a template
*
* check to see if there are 2 or more of the same tag being used.
*
* @global object
* @param int $dataid,
* @param string $template
* @return bool
*/
function data_tags_check($dataid, $template) {
global $DB, $OUTPUT;
// first get all the possible tags
$fields = $DB->get_records('data_fields', array('dataid'=>$dataid));
// then we generate strings to replace
$tagsok = true; // let's be optimistic
foreach ($fields as $field){
$pattern="/\[\[".$field->name."\]\]/i";
if (preg_match_all($pattern, $template, $dummy)>1){
$tagsok = false;
echo $OUTPUT->notification('[['.$field->name.']] - '.get_string('multipletags','data'));
}
}
// else return true
return $tagsok;
}
/**
* Adds an instance of a data
*
* @param stdClass $data
* @param mod_data_mod_form $mform
* @return int intance id
*/
function data_add_instance($data, $mform = null) {
global $DB;
if (empty($data->assessed)) {
$data->assessed = 0;
}
$data->timemodified = time();
$data->id = $DB->insert_record('data', $data);
data_grade_item_update($data);
return $data->id;
}
/**
* updates an instance of a data
*
* @global object
* @param object $data
* @return bool
*/
function data_update_instance($data) {
global $DB, $OUTPUT;
$data->timemodified = time();
$data->id = $data->instance;
if (empty($data->assessed)) {
$data->assessed = 0;
}
if (empty($data->ratingtime) or empty($data->assessed)) {
$data->assesstimestart = 0;
$data->assesstimefinish = 0;
}
if (empty($data->notification)) {
$data->notification = 0;
}
$DB->update_record('data', $data);
data_grade_item_update($data);
return true;
}
/**
* deletes an instance of a data
*
* @global object
* @param int $id
* @return bool
*/
function data_delete_instance($id) { // takes the dataid
global $DB, $CFG;
if (!$data = $DB->get_record('data', array('id'=>$id))) {
return false;
}
$cm = get_coursemodule_from_instance('data', $data->id);
$context = context_module::instance($cm->id);
/// Delete all the associated information
// files
$fs = get_file_storage();
$fs->delete_area_files($context->id, 'mod_data');
// get all the records in this data
$sql = "SELECT r.id
FROM {data_records} r
WHERE r.dataid = ?";
$DB->delete_records_select('data_content', "recordid IN ($sql)", array($id));
// delete all the records and fields
$DB->delete_records('data_records', array('dataid'=>$id));
$DB->delete_records('data_fields', array('dataid'=>$id));
// Delete the instance itself
$result = $DB->delete_records('data', array('id'=>$id));
// cleanup gradebook
data_grade_item_delete($data);
return $result;
}
/**
* returns a summary of data activity of this user
*
* @global object
* @param object $course
* @param object $user
* @param object $mod
* @param object $data
* @return object|null
*/
function data_user_outline($course, $user, $mod, $data) {
global $DB, $CFG;
require_once("$CFG->libdir/gradelib.php");
$grades = grade_get_grades($course->id, 'mod', 'data', $data->id, $user->id);
if (empty($grades->items[0]->grades)) {
$grade = false;
} else {
$grade = reset($grades->items[0]->grades);
}
if ($countrecords = $DB->count_records('data_records', array('dataid'=>$data->id, 'userid'=>$user->id))) {
$result = new stdClass();
$result->info = get_string('numrecords', 'data', $countrecords);
$lastrecord = $DB->get_record_sql('SELECT id,timemodified FROM {data_records}
WHERE dataid = ? AND userid = ?
ORDER BY timemodified DESC', array($data->id, $user->id), true);
$result->time = $lastrecord->timemodified;
if ($grade) {
$result->info .= ', ' . get_string('grade') . ': ' . $grade->str_long_grade;
}
return $result;
} else if ($grade) {
$result = new stdClass();
$result->info = get_string('grade') . ': ' . $grade->str_long_grade;
//datesubmitted == time created. dategraded == time modified or time overridden
//if grade was last modified by the user themselves use date graded. Otherwise use date submitted
//TODO: move this copied & pasted code somewhere in the grades API. See MDL-26704
if ($grade->usermodified == $user->id || empty($grade->datesubmitted)) {
$result->time = $grade->dategraded;
} else {
$result->time = $grade->datesubmitted;
}
return $result;
}
return NULL;
}
/**
* Prints all the records uploaded by this user
*
* @global object
* @param object $course
* @param object $user
* @param object $mod
* @param object $data
*/
function data_user_complete($course, $user, $mod, $data) {
global $DB, $CFG, $OUTPUT;
require_once("$CFG->libdir/gradelib.php");
$grades = grade_get_grades($course->id, 'mod', 'data', $data->id, $user->id);
if (!empty($grades->items[0]->grades)) {
$grade = reset($grades->items[0]->grades);
echo $OUTPUT->container(get_string('grade').': '.$grade->str_long_grade);
if ($grade->str_feedback) {
echo $OUTPUT->container(get_string('feedback').': '.$grade->str_feedback);
}
}
if ($records = $DB->get_records('data_records', array('dataid'=>$data->id,'userid'=>$user->id), 'timemodified DESC')) {
data_print_template('singletemplate', $records, $data);
}
}
/**
* Return grade for given user or all users.
*
* @global object
* @param object $data
* @param int $userid optional user id, 0 means all users
* @return array array of grades, false if none
*/
function data_get_user_grades($data, $userid=0) {
global $CFG;
require_once($CFG->dirroot.'/rating/lib.php');
$ratingoptions = new stdClass;
$ratingoptions->component = 'mod_data';
$ratingoptions->ratingarea = 'entry';
$ratingoptions->modulename = 'data';
$ratingoptions->moduleid = $data->id;
$ratingoptions->userid = $userid;
$ratingoptions->aggregationmethod = $data->assessed;
$ratingoptions->scaleid = $data->scale;
$ratingoptions->itemtable = 'data_records';
$ratingoptions->itemtableusercolumn = 'userid';
$rm = new rating_manager();
return $rm->get_user_grades($ratingoptions);
}
/**
* Update activity grades
*
* @category grade
* @param object $data
* @param int $userid specific user only, 0 means all
* @param bool $nullifnone
*/
function data_update_grades($data, $userid=0, $nullifnone=true) {
global $CFG, $DB;
require_once($CFG->libdir.'/gradelib.php');
if (!$data->assessed) {
data_grade_item_update($data);
} else if ($grades = data_get_user_grades($data, $userid)) {
data_grade_item_update($data, $grades);
} else if ($userid and $nullifnone) {
$grade = new stdClass();
$grade->userid = $userid;
$grade->rawgrade = NULL;
data_grade_item_update($data, $grade);
} else {
data_grade_item_update($data);
}
}
/**
* Update/create grade item for given data
*
* @category grade
* @param stdClass $data A database instance with extra cmidnumber property
* @param mixed $grades Optional array/object of grade(s); 'reset' means reset grades in gradebook
* @return object grade_item
*/
function data_grade_item_update($data, $grades=NULL) {
global $CFG;
require_once($CFG->libdir.'/gradelib.php');
$params = array('itemname'=>$data->name, 'idnumber'=>$data->cmidnumber);
if (!$data->assessed or $data->scale == 0) {
$params['gradetype'] = GRADE_TYPE_NONE;
} else if ($data->scale > 0) {
$params['gradetype'] = GRADE_TYPE_VALUE;
$params['grademax'] = $data->scale;
$params['grademin'] = 0;
} else if ($data->scale < 0) {
$params['gradetype'] = GRADE_TYPE_SCALE;
$params['scaleid'] = -$data->scale;
}
if ($grades === 'reset') {
$params['reset'] = true;
$grades = NULL;
}
return grade_update('mod/data', $data->course, 'mod', 'data', $data->id, 0, $grades, $params);
}
/**
* Delete grade item for given data
*
* @category grade
* @param object $data object
* @return object grade_item
*/
function data_grade_item_delete($data) {
global $CFG;
require_once($CFG->libdir.'/gradelib.php');
return grade_update('mod/data', $data->course, 'mod', 'data', $data->id, 0, NULL, array('deleted'=>1));
}
// junk functions
/**
* takes a list of records, the current data, a search string,
* and mode to display prints the translated template
*
* @global object
* @global object
* @param string $template
* @param array $records
* @param object $data
* @param string $search
* @param int $page
* @param bool $return
* @param object $jumpurl a moodle_url by which to jump back to the record list (can be null)
* @return mixed
*/
function data_print_template($template, $records, $data, $search='', $page=0, $return=false, moodle_url $jumpurl=null) {
global $CFG, $DB, $OUTPUT;
$cm = get_coursemodule_from_instance('data', $data->id);
$context = context_module::instance($cm->id);
static $fields = NULL;
static $isteacher;
static $dataid = NULL;
if (empty($dataid)) {
$dataid = $data->id;
} else if ($dataid != $data->id) {
$fields = NULL;
}
if (empty($fields)) {
$fieldrecords = $DB->get_records('data_fields', array('dataid'=>$data->id));
foreach ($fieldrecords as $fieldrecord) {
$fields[]= data_get_field($fieldrecord, $data);
}
$isteacher = has_capability('mod/data:managetemplates', $context);
}
if (empty($records)) {
return;
}
if (!$jumpurl) {
$jumpurl = new moodle_url('/mod/data/view.php', array('d' => $data->id));
}
$jumpurl = new moodle_url($jumpurl, array('page' => $page, 'sesskey' => sesskey()));
// Check whether this activity is read-only at present
$readonly = data_in_readonly_period($data);
foreach ($records as $record) { // Might be just one for the single template
// Replacing tags
$patterns = array();
$replacement = array();
// Then we generate strings to replace for normal tags
foreach ($fields as $field) {
$patterns[]='[['.$field->field->name.']]';
$replacement[] = highlight($search, $field->display_browse_field($record->id, $template));
}
$canmanageentries = has_capability('mod/data:manageentries', $context);
// Replacing special tags (##Edit##, ##Delete##, ##More##)
$patterns[]='##edit##';
$patterns[]='##delete##';
if ($canmanageentries || (!$readonly && data_isowner($record->id))) {
$replacement[] = '';
$replacement[] = '';
} else {
$replacement[] = '';
$replacement[] = '';
}
$moreurl = $CFG->wwwroot . '/mod/data/view.php?d=' . $data->id . '&rid=' . $record->id;
if ($search) {
$moreurl .= '&filter=1';
}
$patterns[]='##more##';
$replacement[] = '';
$patterns[]='##moreurl##';
$replacement[] = $moreurl;
$patterns[]='##delcheck##';
if ($canmanageentries) {
$replacement[] = html_writer::checkbox('delcheck[]', $record->id, false, '', array('class' => 'recordcheckbox'));
} else {
$replacement[] = '';
}
$patterns[]='##user##';
$replacement[] = ''.fullname($record).'';
$patterns[]='##export##';
if (!empty($CFG->enableportfolios) && ($template == 'singletemplate' || $template == 'listtemplate')
&& ((has_capability('mod/data:exportentry', $context)
|| (data_isowner($record->id) && has_capability('mod/data:exportownentry', $context))))) {
require_once($CFG->libdir . '/portfoliolib.php');
$button = new portfolio_add_button();
$button->set_callback_options('data_portfolio_caller', array('id' => $cm->id, 'recordid' => $record->id), 'mod_data');
list($formats, $files) = data_portfolio_caller::formats($fields, $record);
$button->set_formats($formats);
$replacement[] = $button->to_html(PORTFOLIO_ADD_ICON_LINK);
} else {
$replacement[] = '';
}
$patterns[] = '##timeadded##';
$replacement[] = userdate($record->timecreated);
$patterns[] = '##timemodified##';
$replacement [] = userdate($record->timemodified);
$patterns[]='##approve##';
if (has_capability('mod/data:approve', $context) && ($data->approval) && (!$record->approved)) {
$approveurl = new moodle_url($jumpurl, array('approve' => $record->id));
$approveicon = new pix_icon('t/approve', get_string('approve', 'data'), '', array('class' => 'iconsmall'));
$replacement[] = html_writer::tag('span', $OUTPUT->action_icon($approveurl, $approveicon),
array('class' => 'approve'));
} else {
$replacement[] = '';
}
$patterns[]='##disapprove##';
if (has_capability('mod/data:approve', $context) && ($data->approval) && ($record->approved)) {
$disapproveurl = new moodle_url($jumpurl, array('disapprove' => $record->id));
$disapproveicon = new pix_icon('t/block', get_string('disapprove', 'data'), '', array('class' => 'iconsmall'));
$replacement[] = html_writer::tag('span', $OUTPUT->action_icon($disapproveurl, $disapproveicon),
array('class' => 'disapprove'));
} else {
$replacement[] = '';
}
$patterns[]='##comments##';
if (($template == 'listtemplate') && ($data->comments)) {
if (!empty($CFG->usecomments)) {
require_once($CFG->dirroot . '/comment/lib.php');
list($context, $course, $cm) = get_context_info_array($context->id);
$cmt = new stdClass();
$cmt->context = $context;
$cmt->course = $course;
$cmt->cm = $cm;
$cmt->area = 'database_entry';
$cmt->itemid = $record->id;
$cmt->showcount = true;
$cmt->component = 'mod_data';
$comment = new comment($cmt);
$replacement[] = $comment->output(true);
}
} else {
$replacement[] = '';
}
// actual replacement of the tags
$newtext = str_ireplace($patterns, $replacement, $data->{$template});
// no more html formatting and filtering - see MDL-6635
if ($return) {
return $newtext;
} else {
echo $newtext;
// hack alert - return is always false in singletemplate anyway ;-)
/**********************************
* Printing Ratings Form *
*********************************/
if ($template == 'singletemplate') { //prints ratings options
data_print_ratings($data, $record);
}
/**********************************
* Printing Comments Form *
*********************************/
if (($template == 'singletemplate') && ($data->comments)) {
if (!empty($CFG->usecomments)) {
require_once($CFG->dirroot . '/comment/lib.php');
list($context, $course, $cm) = get_context_info_array($context->id);
$cmt = new stdClass();
$cmt->context = $context;
$cmt->course = $course;
$cmt->cm = $cm;
$cmt->area = 'database_entry';
$cmt->itemid = $record->id;
$cmt->showcount = true;
$cmt->component = 'mod_data';
$comment = new comment($cmt);
$comment->output(false);
}
}
}
}
}
/**
* Return rating related permissions
*
* @param string $contextid the context id
* @param string $component the component to get rating permissions for
* @param string $ratingarea the rating area to get permissions for
* @return array an associative array of the user's rating permissions
*/
function data_rating_permissions($contextid, $component, $ratingarea) {
$context = context::instance_by_id($contextid, MUST_EXIST);
if ($component != 'mod_data' || $ratingarea != 'entry') {
return null;
}
return array(
'view' => has_capability('mod/data:viewrating',$context),
'viewany' => has_capability('mod/data:viewanyrating',$context),
'viewall' => has_capability('mod/data:viewallratings',$context),
'rate' => has_capability('mod/data:rate',$context)
);
}
/**
* Validates a submitted rating
* @param array $params submitted data
* context => object the context in which the rated items exists [required]
* itemid => int the ID of the object being rated
* scaleid => int the scale from which the user can select a rating. Used for bounds checking. [required]
* rating => int the submitted rating
* rateduserid => int the id of the user whose items have been rated. NOT the user who submitted the ratings. 0 to update all. [required]
* aggregation => int the aggregation method to apply when calculating grades ie RATING_AGGREGATE_AVERAGE [required]
* @return boolean true if the rating is valid. Will throw rating_exception if not
*/
function data_rating_validate($params) {
global $DB, $USER;
// Check the component is mod_data
if ($params['component'] != 'mod_data') {
throw new rating_exception('invalidcomponent');
}
// Check the ratingarea is entry (the only rating area in data module)
if ($params['ratingarea'] != 'entry') {
throw new rating_exception('invalidratingarea');
}
// Check the rateduserid is not the current user .. you can't rate your own entries
if ($params['rateduserid'] == $USER->id) {
throw new rating_exception('nopermissiontorate');
}
$datasql = "SELECT d.id as dataid, d.scale, d.course, r.userid as userid, d.approval, r.approved, r.timecreated, d.assesstimestart, d.assesstimefinish, r.groupid
FROM {data_records} r
JOIN {data} d ON r.dataid = d.id
WHERE r.id = :itemid";
$dataparams = array('itemid'=>$params['itemid']);
if (!$info = $DB->get_record_sql($datasql, $dataparams)) {
//item doesn't exist
throw new rating_exception('invaliditemid');
}
if ($info->scale != $params['scaleid']) {
//the scale being submitted doesnt match the one in the database
throw new rating_exception('invalidscaleid');
}
//check that the submitted rating is valid for the scale
// lower limit
if ($params['rating'] < 0 && $params['rating'] != RATING_UNSET_RATING) {
throw new rating_exception('invalidnum');
}
// upper limit
if ($info->scale < 0) {
//its a custom scale
$scalerecord = $DB->get_record('scale', array('id' => -$info->scale));
if ($scalerecord) {
$scalearray = explode(',', $scalerecord->scale);
if ($params['rating'] > count($scalearray)) {
throw new rating_exception('invalidnum');
}
} else {
throw new rating_exception('invalidscaleid');
}
} else if ($params['rating'] > $info->scale) {
//if its numeric and submitted rating is above maximum
throw new rating_exception('invalidnum');
}
if ($info->approval && !$info->approved) {
//database requires approval but this item isnt approved
throw new rating_exception('nopermissiontorate');
}
// check the item we're rating was created in the assessable time window
if (!empty($info->assesstimestart) && !empty($info->assesstimefinish)) {
if ($info->timecreated < $info->assesstimestart || $info->timecreated > $info->assesstimefinish) {
throw new rating_exception('notavailable');
}
}
$course = $DB->get_record('course', array('id'=>$info->course), '*', MUST_EXIST);
$cm = get_coursemodule_from_instance('data', $info->dataid, $course->id, false, MUST_EXIST);
$context = context_module::instance($cm->id);
// if the supplied context doesnt match the item's context
if ($context->id != $params['context']->id) {
throw new rating_exception('invalidcontext');
}
// Make sure groups allow this user to see the item they're rating
$groupid = $info->groupid;
if ($groupid > 0 and $groupmode = groups_get_activity_groupmode($cm, $course)) { // Groups are being used
if (!groups_group_exists($groupid)) { // Can't find group
throw new rating_exception('cannotfindgroup');//something is wrong
}
if (!groups_is_member($groupid) and !has_capability('moodle/site:accessallgroups', $context)) {
// do not allow rating of posts from other groups when in SEPARATEGROUPS or VISIBLEGROUPS
throw new rating_exception('notmemberofgroup');
}
}
return true;
}
/**
* function that takes in the current data, number of items per page,
* a search string and prints a preference box in view.php
*
* This preference box prints a searchable advanced search template if
* a) A template is defined
* b) The advanced search checkbox is checked.
*
* @global object
* @global object
* @param object $data
* @param int $perpage
* @param string $search
* @param string $sort
* @param string $order
* @param array $search_array
* @param int $advanced
* @param string $mode
* @return void
*/
function data_print_preference_form($data, $perpage, $search, $sort='', $order='ASC', $search_array = '', $advanced = 0, $mode= ''){
global $CFG, $DB, $PAGE, $OUTPUT;
$cm = get_coursemodule_from_instance('data', $data->id);
$context = context_module::instance($cm->id);
echo '
';
echo '';
echo '
';
}
/**
* @global object
* @global object
* @param object $data
* @param object $record
* @return void Output echo'd
*/
function data_print_ratings($data, $record) {
global $OUTPUT;
if (!empty($record->rating)){
echo $OUTPUT->render($record->rating);
}
}
/**
* List the actions that correspond to a view of this module.
* This is used by the participation report.
*
* Note: This is not used by new logging system. Event with
* crud = 'r' and edulevel = LEVEL_PARTICIPATING will
* be considered as view action.
*
* @return array
*/
function data_get_view_actions() {
return array('view');
}
/**
* List the actions that correspond to a post of this module.
* This is used by the participation report.
*
* Note: This is not used by new logging system. Event with
* crud = ('c' || 'u' || 'd') and edulevel = LEVEL_PARTICIPATING
* will be considered as post action.
*
* @return array
*/
function data_get_post_actions() {
return array('add','update','record delete');
}
/**
* @param string $name
* @param int $dataid
* @param int $fieldid
* @return bool
*/
function data_fieldname_exists($name, $dataid, $fieldid = 0) {
global $DB;
if (!is_numeric($name)) {
$like = $DB->sql_like('df.name', ':name', false);
} else {
$like = "df.name = :name";
}
$params = array('name'=>$name);
if ($fieldid) {
$params['dataid'] = $dataid;
$params['fieldid1'] = $fieldid;
$params['fieldid2'] = $fieldid;
return $DB->record_exists_sql("SELECT * FROM {data_fields} df
WHERE $like AND df.dataid = :dataid
AND ((df.id < :fieldid1) OR (df.id > :fieldid2))", $params);
} else {
$params['dataid'] = $dataid;
return $DB->record_exists_sql("SELECT * FROM {data_fields} df
WHERE $like AND df.dataid = :dataid", $params);
}
}
/**
* @param array $fieldinput
*/
function data_convert_arrays_to_strings(&$fieldinput) {
foreach ($fieldinput as $key => $val) {
if (is_array($val)) {
$str = '';
foreach ($val as $inner) {
$str .= $inner . ',';
}
$str = substr($str, 0, -1);
$fieldinput->$key = $str;
}
}
}
/**
* Converts a database (module instance) to use the Roles System
*
* @global object
* @global object
* @uses CONTEXT_MODULE
* @uses CAP_PREVENT
* @uses CAP_ALLOW
* @param object $data a data object with the same attributes as a record
* from the data database table
* @param int $datamodid the id of the data module, from the modules table
* @param array $teacherroles array of roles that have archetype teacher
* @param array $studentroles array of roles that have archetype student
* @param array $guestroles array of roles that have archetype guest
* @param int $cmid the course_module id for this data instance
* @return boolean data module was converted or not
*/
function data_convert_to_roles($data, $teacherroles=array(), $studentroles=array(), $cmid=NULL) {
global $CFG, $DB, $OUTPUT;
if (!isset($data->participants) && !isset($data->assesspublic)
&& !isset($data->groupmode)) {
// We assume that this database has already been converted to use the
// Roles System. above fields get dropped the data module has been
// upgraded to use Roles.
return false;
}
if (empty($cmid)) {
// We were not given the course_module id. Try to find it.
if (!$cm = get_coursemodule_from_instance('data', $data->id)) {
echo $OUTPUT->notification('Could not get the course module for the data');
return false;
} else {
$cmid = $cm->id;
}
}
$context = context_module::instance($cmid);
// $data->participants:
// 1 - Only teachers can add entries
// 3 - Teachers and students can add entries
switch ($data->participants) {
case 1:
foreach ($studentroles as $studentrole) {
assign_capability('mod/data:writeentry', CAP_PREVENT, $studentrole->id, $context->id);
}
foreach ($teacherroles as $teacherrole) {
assign_capability('mod/data:writeentry', CAP_ALLOW, $teacherrole->id, $context->id);
}
break;
case 3:
foreach ($studentroles as $studentrole) {
assign_capability('mod/data:writeentry', CAP_ALLOW, $studentrole->id, $context->id);
}
foreach ($teacherroles as $teacherrole) {
assign_capability('mod/data:writeentry', CAP_ALLOW, $teacherrole->id, $context->id);
}
break;
}
// $data->assessed:
// 2 - Only teachers can rate posts
// 1 - Everyone can rate posts
// 0 - No one can rate posts
switch ($data->assessed) {
case 0:
foreach ($studentroles as $studentrole) {
assign_capability('mod/data:rate', CAP_PREVENT, $studentrole->id, $context->id);
}
foreach ($teacherroles as $teacherrole) {
assign_capability('mod/data:rate', CAP_PREVENT, $teacherrole->id, $context->id);
}
break;
case 1:
foreach ($studentroles as $studentrole) {
assign_capability('mod/data:rate', CAP_ALLOW, $studentrole->id, $context->id);
}
foreach ($teacherroles as $teacherrole) {
assign_capability('mod/data:rate', CAP_ALLOW, $teacherrole->id, $context->id);
}
break;
case 2:
foreach ($studentroles as $studentrole) {
assign_capability('mod/data:rate', CAP_PREVENT, $studentrole->id, $context->id);
}
foreach ($teacherroles as $teacherrole) {
assign_capability('mod/data:rate', CAP_ALLOW, $teacherrole->id, $context->id);
}
break;
}
// $data->assesspublic:
// 0 - Students can only see their own ratings
// 1 - Students can see everyone's ratings
switch ($data->assesspublic) {
case 0:
foreach ($studentroles as $studentrole) {
assign_capability('mod/data:viewrating', CAP_PREVENT, $studentrole->id, $context->id);
}
foreach ($teacherroles as $teacherrole) {
assign_capability('mod/data:viewrating', CAP_ALLOW, $teacherrole->id, $context->id);
}
break;
case 1:
foreach ($studentroles as $studentrole) {
assign_capability('mod/data:viewrating', CAP_ALLOW, $studentrole->id, $context->id);
}
foreach ($teacherroles as $teacherrole) {
assign_capability('mod/data:viewrating', CAP_ALLOW, $teacherrole->id, $context->id);
}
break;
}
if (empty($cm)) {
$cm = $DB->get_record('course_modules', array('id'=>$cmid));
}
switch ($cm->groupmode) {
case NOGROUPS:
break;
case SEPARATEGROUPS:
foreach ($studentroles as $studentrole) {
assign_capability('moodle/site:accessallgroups', CAP_PREVENT, $studentrole->id, $context->id);
}
foreach ($teacherroles as $teacherrole) {
assign_capability('moodle/site:accessallgroups', CAP_ALLOW, $teacherrole->id, $context->id);
}
break;
case VISIBLEGROUPS:
foreach ($studentroles as $studentrole) {
assign_capability('moodle/site:accessallgroups', CAP_ALLOW, $studentrole->id, $context->id);
}
foreach ($teacherroles as $teacherrole) {
assign_capability('moodle/site:accessallgroups', CAP_ALLOW, $teacherrole->id, $context->id);
}
break;
}
return true;
}
/**
* Returns the best name to show for a preset
*
* @param string $shortname
* @param string $path
* @return string
*/
function data_preset_name($shortname, $path) {
// We are looking inside the preset itself as a first choice, but also in normal data directory
$string = get_string('modulename', 'datapreset_'.$shortname);
if (substr($string, 0, 1) == '[') {
return $shortname;
} else {
return $string;
}
}
/**
* Returns an array of all the available presets.
*
* @return array
*/
function data_get_available_presets($context) {
global $CFG, $USER;
$presets = array();
// First load the ratings sub plugins that exist within the modules preset dir
if ($dirs = core_component::get_plugin_list('datapreset')) {
foreach ($dirs as $dir=>$fulldir) {
if (is_directory_a_preset($fulldir)) {
$preset = new stdClass();
$preset->path = $fulldir;
$preset->userid = 0;
$preset->shortname = $dir;
$preset->name = data_preset_name($dir, $fulldir);
if (file_exists($fulldir.'/screenshot.jpg')) {
$preset->screenshot = $CFG->wwwroot.'/mod/data/preset/'.$dir.'/screenshot.jpg';
} else if (file_exists($fulldir.'/screenshot.png')) {
$preset->screenshot = $CFG->wwwroot.'/mod/data/preset/'.$dir.'/screenshot.png';
} else if (file_exists($fulldir.'/screenshot.gif')) {
$preset->screenshot = $CFG->wwwroot.'/mod/data/preset/'.$dir.'/screenshot.gif';
}
$presets[] = $preset;
}
}
}
// Now add to that the site presets that people have saved
$presets = data_get_available_site_presets($context, $presets);
return $presets;
}
/**
* Gets an array of all of the presets that users have saved to the site.
*
* @param stdClass $context The context that we are looking from.
* @param array $presets
* @return array An array of presets
*/
function data_get_available_site_presets($context, array $presets=array()) {
global $USER;
$fs = get_file_storage();
$files = $fs->get_area_files(DATA_PRESET_CONTEXT, DATA_PRESET_COMPONENT, DATA_PRESET_FILEAREA);
$canviewall = has_capability('mod/data:viewalluserpresets', $context);
if (empty($files)) {
return $presets;
}
foreach ($files as $file) {
if (($file->is_directory() && $file->get_filepath()=='/') || !$file->is_directory() || (!$canviewall && $file->get_userid() != $USER->id)) {
continue;
}
$preset = new stdClass;
$preset->path = $file->get_filepath();
$preset->name = trim($preset->path, '/');
$preset->shortname = $preset->name;
$preset->userid = $file->get_userid();
$preset->id = $file->get_id();
$preset->storedfile = $file;
$presets[] = $preset;
}
return $presets;
}
/**
* Deletes a saved preset.
*
* @param string $name
* @return bool
*/
function data_delete_site_preset($name) {
$fs = get_file_storage();
$files = $fs->get_directory_files(DATA_PRESET_CONTEXT, DATA_PRESET_COMPONENT, DATA_PRESET_FILEAREA, 0, '/'.$name.'/');
if (!empty($files)) {
foreach ($files as $file) {
$file->delete();
}
}
$dir = $fs->get_file(DATA_PRESET_CONTEXT, DATA_PRESET_COMPONENT, DATA_PRESET_FILEAREA, 0, '/'.$name.'/', '.');
if (!empty($dir)) {
$dir->delete();
}
return true;
}
/**
* Prints the heads for a page
*
* @param stdClass $course
* @param stdClass $cm
* @param stdClass $data
* @param string $currenttab
*/
function data_print_header($course, $cm, $data, $currenttab='') {
global $CFG, $displaynoticegood, $displaynoticebad, $OUTPUT, $PAGE;
$PAGE->set_title($data->name);
echo $OUTPUT->header();
echo $OUTPUT->heading(format_string($data->name), 2);
echo $OUTPUT->box(format_module_intro('data', $data, $cm->id), 'generalbox', 'intro');
// Groups needed for Add entry tab
$currentgroup = groups_get_activity_group($cm);
$groupmode = groups_get_activity_groupmode($cm);
// Print the tabs
if ($currenttab) {
include('tabs.php');
}
// Print any notices
if (!empty($displaynoticegood)) {
echo $OUTPUT->notification($displaynoticegood, 'notifysuccess'); // good (usually green)
} else if (!empty($displaynoticebad)) {
echo $OUTPUT->notification($displaynoticebad); // bad (usuually red)
}
}
/**
* Can user add more entries?
*
* @param object $data
* @param mixed $currentgroup
* @param int $groupmode
* @param stdClass $context
* @return bool
*/
function data_user_can_add_entry($data, $currentgroup, $groupmode, $context = null) {
global $USER;
if (empty($context)) {
$cm = get_coursemodule_from_instance('data', $data->id, 0, false, MUST_EXIST);
$context = context_module::instance($cm->id);
}
if (has_capability('mod/data:manageentries', $context)) {
// no entry limits apply if user can manage
} else if (!has_capability('mod/data:writeentry', $context)) {
return false;
} else if (data_atmaxentries($data)) {
return false;
} else if (data_in_readonly_period($data)) {
// Check whether we're in a read-only period
return false;
}
if (!$groupmode or has_capability('moodle/site:accessallgroups', $context)) {
return true;
}
if ($currentgroup) {
return groups_is_member($currentgroup);
} else {
//else it might be group 0 in visible mode
if ($groupmode == VISIBLEGROUPS){
return true;
} else {
return false;
}
}
}
/**
* Check whether the specified database activity is currently in a read-only period
*
* @param object $data
* @return bool returns true if the time fields in $data indicate a read-only period; false otherwise
*/
function data_in_readonly_period($data) {
$now = time();
if (!$data->timeviewfrom && !$data->timeviewto) {
return false;
} else if (($data->timeviewfrom && $now < $data->timeviewfrom) || ($data->timeviewto && $now > $data->timeviewto)) {
return false;
}
return true;
}
/**
* @return bool
*/
function is_directory_a_preset($directory) {
$directory = rtrim($directory, '/\\') . '/';
$status = file_exists($directory.'singletemplate.html') &&
file_exists($directory.'listtemplate.html') &&
file_exists($directory.'listtemplateheader.html') &&
file_exists($directory.'listtemplatefooter.html') &&
file_exists($directory.'addtemplate.html') &&
file_exists($directory.'rsstemplate.html') &&
file_exists($directory.'rsstitletemplate.html') &&
file_exists($directory.'csstemplate.css') &&
file_exists($directory.'jstemplate.js') &&
file_exists($directory.'preset.xml');
return $status;
}
/**
* Abstract class used for data preset importers
*/
abstract class data_preset_importer {
protected $course;
protected $cm;
protected $module;
protected $directory;
/**
* Constructor
*
* @param stdClass $course
* @param stdClass $cm
* @param stdClass $module
* @param string $directory
*/
public function __construct($course, $cm, $module, $directory) {
$this->course = $course;
$this->cm = $cm;
$this->module = $module;
$this->directory = $directory;
}
/**
* Returns the name of the directory the preset is located in
* @return string
*/
public function get_directory() {
return basename($this->directory);
}
/**
* Retreive the contents of a file. That file may either be in a conventional directory of the Moodle file storage
* @param file_storage $filestorage. should be null if using a conventional directory
* @param stored_file $fileobj the directory to look in. null if using a conventional directory
* @param string $dir the directory to look in. null if using the Moodle file storage
* @param string $filename the name of the file we want
* @return string the contents of the file or null if the file doesn't exist.
*/
public function data_preset_get_file_contents(&$filestorage, &$fileobj, $dir, $filename) {
if(empty($filestorage) || empty($fileobj)) {
if (substr($dir, -1)!='/') {
$dir .= '/';
}
if (file_exists($dir.$filename)) {
return file_get_contents($dir.$filename);
} else {
return null;
}
} else {
if ($filestorage->file_exists(DATA_PRESET_CONTEXT, DATA_PRESET_COMPONENT, DATA_PRESET_FILEAREA, 0, $fileobj->get_filepath(), $filename)) {
$file = $filestorage->get_file(DATA_PRESET_CONTEXT, DATA_PRESET_COMPONENT, DATA_PRESET_FILEAREA, 0, $fileobj->get_filepath(), $filename);
return $file->get_content();
} else {
return null;
}
}
}
/**
* Gets the preset settings
* @global moodle_database $DB
* @return stdClass
*/
public function get_preset_settings() {
global $DB;
$fs = $fileobj = null;
if (!is_directory_a_preset($this->directory)) {
//maybe the user requested a preset stored in the Moodle file storage
$fs = get_file_storage();
$files = $fs->get_area_files(DATA_PRESET_CONTEXT, DATA_PRESET_COMPONENT, DATA_PRESET_FILEAREA);
//preset name to find will be the final element of the directory
$explodeddirectory = explode('/', $this->directory);
$presettofind = end($explodeddirectory);
//now go through the available files available and see if we can find it
foreach ($files as $file) {
if (($file->is_directory() && $file->get_filepath()=='/') || !$file->is_directory()) {
continue;
}
$presetname = trim($file->get_filepath(), '/');
if ($presetname==$presettofind) {
$this->directory = $presetname;
$fileobj = $file;
}
}
if (empty($fileobj)) {
print_error('invalidpreset', 'data', '', $this->directory);
}
}
$allowed_settings = array(
'intro',
'comments',
'requiredentries',
'requiredentriestoview',
'maxentries',
'rssarticles',
'approval',
'defaultsortdir',
'defaultsort');
$result = new stdClass;
$result->settings = new stdClass;
$result->importfields = array();
$result->currentfields = $DB->get_records('data_fields', array('dataid'=>$this->module->id));
if (!$result->currentfields) {
$result->currentfields = array();
}
/* Grab XML */
$presetxml = $this->data_preset_get_file_contents($fs, $fileobj, $this->directory,'preset.xml');
$parsedxml = xmlize($presetxml, 0);
/* First, do settings. Put in user friendly array. */
$settingsarray = $parsedxml['preset']['#']['settings'][0]['#'];
$result->settings = new StdClass();
foreach ($settingsarray as $setting => $value) {
if (!is_array($value) || !in_array($setting, $allowed_settings)) {
// unsupported setting
continue;
}
$result->settings->$setting = $value[0]['#'];
}
/* Now work out fields to user friendly array */
$fieldsarray = $parsedxml['preset']['#']['field'];
foreach ($fieldsarray as $field) {
if (!is_array($field)) {
continue;
}
$f = new StdClass();
foreach ($field['#'] as $param => $value) {
if (!is_array($value)) {
continue;
}
$f->$param = $value[0]['#'];
}
$f->dataid = $this->module->id;
$f->type = clean_param($f->type, PARAM_ALPHA);
$result->importfields[] = $f;
}
/* Now add the HTML templates to the settings array so we can update d */
$result->settings->singletemplate = $this->data_preset_get_file_contents($fs, $fileobj,$this->directory,"singletemplate.html");
$result->settings->listtemplate = $this->data_preset_get_file_contents($fs, $fileobj,$this->directory,"listtemplate.html");
$result->settings->listtemplateheader = $this->data_preset_get_file_contents($fs, $fileobj,$this->directory,"listtemplateheader.html");
$result->settings->listtemplatefooter = $this->data_preset_get_file_contents($fs, $fileobj,$this->directory,"listtemplatefooter.html");
$result->settings->addtemplate = $this->data_preset_get_file_contents($fs, $fileobj,$this->directory,"addtemplate.html");
$result->settings->rsstemplate = $this->data_preset_get_file_contents($fs, $fileobj,$this->directory,"rsstemplate.html");
$result->settings->rsstitletemplate = $this->data_preset_get_file_contents($fs, $fileobj,$this->directory,"rsstitletemplate.html");
$result->settings->csstemplate = $this->data_preset_get_file_contents($fs, $fileobj,$this->directory,"csstemplate.css");
$result->settings->jstemplate = $this->data_preset_get_file_contents($fs, $fileobj,$this->directory,"jstemplate.js");
$result->settings->asearchtemplate = $this->data_preset_get_file_contents($fs, $fileobj,$this->directory,"asearchtemplate.html");
$result->settings->instance = $this->module->id;
return $result;
}
/**
* Import the preset into the given database module
* @return bool
*/
function import($overwritesettings) {
global $DB, $CFG;
$params = $this->get_preset_settings();
$settings = $params->settings;
$newfields = $params->importfields;
$currentfields = $params->currentfields;
$preservedfields = array();
/* Maps fields and makes new ones */
if (!empty($newfields)) {
/* We require an injective mapping, and need to know what to protect */
foreach ($newfields as $nid => $newfield) {
$cid = optional_param("field_$nid", -1, PARAM_INT);
if ($cid == -1) {
continue;
}
if (array_key_exists($cid, $preservedfields)){
print_error('notinjectivemap', 'data');
}
else $preservedfields[$cid] = true;
}
foreach ($newfields as $nid => $newfield) {
$cid = optional_param("field_$nid", -1, PARAM_INT);
/* A mapping. Just need to change field params. Data kept. */
if ($cid != -1 and isset($currentfields[$cid])) {
$fieldobject = data_get_field_from_id($currentfields[$cid]->id, $this->module);
foreach ($newfield as $param => $value) {
if ($param != "id") {
$fieldobject->field->$param = $value;
}
}
unset($fieldobject->field->similarfield);
$fieldobject->update_field();
unset($fieldobject);
} else {
/* Make a new field */
include_once("field/$newfield->type/field.class.php");
if (!isset($newfield->description)) {
$newfield->description = '';
}
$classname = 'data_field_'.$newfield->type;
$fieldclass = new $classname($newfield, $this->module);
$fieldclass->insert_field();
unset($fieldclass);
}
}
}
/* Get rid of all old unused data */
if (!empty($preservedfields)) {
foreach ($currentfields as $cid => $currentfield) {
if (!array_key_exists($cid, $preservedfields)) {
/* Data not used anymore so wipe! */
print "Deleting field $currentfield->name ";
$id = $currentfield->id;
//Why delete existing data records and related comments/ratings??
$DB->delete_records('data_content', array('fieldid'=>$id));
$DB->delete_records('data_fields', array('id'=>$id));
}
}
}
// handle special settings here
if (!empty($settings->defaultsort)) {
if (is_numeric($settings->defaultsort)) {
// old broken value
$settings->defaultsort = 0;
} else {
$settings->defaultsort = (int)$DB->get_field('data_fields', 'id', array('dataid'=>$this->module->id, 'name'=>$settings->defaultsort));
}
} else {
$settings->defaultsort = 0;
}
// do we want to overwrite all current database settings?
if ($overwritesettings) {
// all supported settings
$overwrite = array_keys((array)$settings);
} else {
// only templates and sorting
$overwrite = array('singletemplate', 'listtemplate', 'listtemplateheader', 'listtemplatefooter',
'addtemplate', 'rsstemplate', 'rsstitletemplate', 'csstemplate', 'jstemplate',
'asearchtemplate', 'defaultsortdir', 'defaultsort');
}
// now overwrite current data settings
foreach ($this->module as $prop=>$unused) {
if (in_array($prop, $overwrite)) {
$this->module->$prop = $settings->$prop;
}
}
data_update_instance($this->module);
return $this->cleanup();
}
/**
* Any clean up routines should go here
* @return bool
*/
public function cleanup() {
return true;
}
}
/**
* Data preset importer for uploaded presets
*/
class data_preset_upload_importer extends data_preset_importer {
public function __construct($course, $cm, $module, $filepath) {
global $USER;
if (is_file($filepath)) {
$fp = get_file_packer();
if ($fp->extract_to_pathname($filepath, $filepath.'_extracted')) {
fulldelete($filepath);
}
$filepath .= '_extracted';
}
parent::__construct($course, $cm, $module, $filepath);
}
public function cleanup() {
return fulldelete($this->directory);
}
}
/**
* Data preset importer for existing presets
*/
class data_preset_existing_importer extends data_preset_importer {
protected $userid;
public function __construct($course, $cm, $module, $fullname) {
global $USER;
list($userid, $shortname) = explode('/', $fullname, 2);
$context = context_module::instance($cm->id);
if ($userid && ($userid != $USER->id) && !has_capability('mod/data:manageuserpresets', $context) && !has_capability('mod/data:viewalluserpresets', $context)) {
throw new coding_exception('Invalid preset provided');
}
$this->userid = $userid;
$filepath = data_preset_path($course, $userid, $shortname);
parent::__construct($course, $cm, $module, $filepath);
}
public function get_userid() {
return $this->userid;
}
}
/**
* @global object
* @global object
* @param object $course
* @param int $userid
* @param string $shortname
* @return string
*/
function data_preset_path($course, $userid, $shortname) {
global $USER, $CFG;
$context = context_course::instance($course->id);
$userid = (int)$userid;
$path = null;
if ($userid > 0 && ($userid == $USER->id || has_capability('mod/data:viewalluserpresets', $context))) {
$path = $CFG->dataroot.'/data/preset/'.$userid.'/'.$shortname;
} else if ($userid == 0) {
$path = $CFG->dirroot.'/mod/data/preset/'.$shortname;
} else if ($userid < 0) {
$path = $CFG->tempdir.'/data/'.-$userid.'/'.$shortname;
}
return $path;
}
/**
* Implementation of the function for printing the form elements that control
* whether the course reset functionality affects the data.
*
* @param $mform form passed by reference
*/
function data_reset_course_form_definition(&$mform) {
$mform->addElement('header', 'dataheader', get_string('modulenameplural', 'data'));
$mform->addElement('checkbox', 'reset_data', get_string('deleteallentries','data'));
$mform->addElement('checkbox', 'reset_data_notenrolled', get_string('deletenotenrolled', 'data'));
$mform->disabledIf('reset_data_notenrolled', 'reset_data', 'checked');
$mform->addElement('checkbox', 'reset_data_ratings', get_string('deleteallratings'));
$mform->disabledIf('reset_data_ratings', 'reset_data', 'checked');
$mform->addElement('checkbox', 'reset_data_comments', get_string('deleteallcomments'));
$mform->disabledIf('reset_data_comments', 'reset_data', 'checked');
}
/**
* Course reset form defaults.
* @return array
*/
function data_reset_course_form_defaults($course) {
return array('reset_data'=>0, 'reset_data_ratings'=>1, 'reset_data_comments'=>1, 'reset_data_notenrolled'=>0);
}
/**
* Removes all grades from gradebook
*
* @global object
* @global object
* @param int $courseid
* @param string $type optional type
*/
function data_reset_gradebook($courseid, $type='') {
global $CFG, $DB;
$sql = "SELECT d.*, cm.idnumber as cmidnumber, d.course as courseid
FROM {data} d, {course_modules} cm, {modules} m
WHERE m.name='data' AND m.id=cm.module AND cm.instance=d.id AND d.course=?";
if ($datas = $DB->get_records_sql($sql, array($courseid))) {
foreach ($datas as $data) {
data_grade_item_update($data, 'reset');
}
}
}
/**
* Actual implementation of the reset course functionality, delete all the
* data responses for course $data->courseid.
*
* @global object
* @global object
* @param object $data the data submitted from the reset course.
* @return array status array
*/
function data_reset_userdata($data) {
global $CFG, $DB;
require_once($CFG->libdir.'/filelib.php');
require_once($CFG->dirroot.'/rating/lib.php');
$componentstr = get_string('modulenameplural', 'data');
$status = array();
$allrecordssql = "SELECT r.id
FROM {data_records} r
INNER JOIN {data} d ON r.dataid = d.id
WHERE d.course = ?";
$alldatassql = "SELECT d.id
FROM {data} d
WHERE d.course=?";
$rm = new rating_manager();
$ratingdeloptions = new stdClass;
$ratingdeloptions->component = 'mod_data';
$ratingdeloptions->ratingarea = 'entry';
// Set the file storage - may need it to remove files later.
$fs = get_file_storage();
// delete entries if requested
if (!empty($data->reset_data)) {
$DB->delete_records_select('comments', "itemid IN ($allrecordssql) AND commentarea='database_entry'", array($data->courseid));
$DB->delete_records_select('data_content', "recordid IN ($allrecordssql)", array($data->courseid));
$DB->delete_records_select('data_records', "dataid IN ($alldatassql)", array($data->courseid));
if ($datas = $DB->get_records_sql($alldatassql, array($data->courseid))) {
foreach ($datas as $dataid=>$unused) {
if (!$cm = get_coursemodule_from_instance('data', $dataid)) {
continue;
}
$datacontext = context_module::instance($cm->id);
// Delete any files that may exist.
$fs->delete_area_files($datacontext->id, 'mod_data', 'content');
$ratingdeloptions->contextid = $datacontext->id;
$rm->delete_ratings($ratingdeloptions);
}
}
if (empty($data->reset_gradebook_grades)) {
// remove all grades from gradebook
data_reset_gradebook($data->courseid);
}
$status[] = array('component'=>$componentstr, 'item'=>get_string('deleteallentries', 'data'), 'error'=>false);
}
// remove entries by users not enrolled into course
if (!empty($data->reset_data_notenrolled)) {
$recordssql = "SELECT r.id, r.userid, r.dataid, u.id AS userexists, u.deleted AS userdeleted
FROM {data_records} r
JOIN {data} d ON r.dataid = d.id
LEFT JOIN {user} u ON r.userid = u.id
WHERE d.course = ? AND r.userid > 0";
$course_context = context_course::instance($data->courseid);
$notenrolled = array();
$fields = array();
$rs = $DB->get_recordset_sql($recordssql, array($data->courseid));
foreach ($rs as $record) {
if (array_key_exists($record->userid, $notenrolled) or !$record->userexists or $record->userdeleted
or !is_enrolled($course_context, $record->userid)) {
//delete ratings
if (!$cm = get_coursemodule_from_instance('data', $record->dataid)) {
continue;
}
$datacontext = context_module::instance($cm->id);
$ratingdeloptions->contextid = $datacontext->id;
$ratingdeloptions->itemid = $record->id;
$rm->delete_ratings($ratingdeloptions);
// Delete any files that may exist.
if ($contents = $DB->get_records('data_content', array('recordid' => $record->id), '', 'id')) {
foreach ($contents as $content) {
$fs->delete_area_files($datacontext->id, 'mod_data', 'content', $content->id);
}
}
$notenrolled[$record->userid] = true;
$DB->delete_records('comments', array('itemid' => $record->id, 'commentarea' => 'database_entry'));
$DB->delete_records('data_content', array('recordid' => $record->id));
$DB->delete_records('data_records', array('id' => $record->id));
}
}
$rs->close();
$status[] = array('component'=>$componentstr, 'item'=>get_string('deletenotenrolled', 'data'), 'error'=>false);
}
// remove all ratings
if (!empty($data->reset_data_ratings)) {
if ($datas = $DB->get_records_sql($alldatassql, array($data->courseid))) {
foreach ($datas as $dataid=>$unused) {
if (!$cm = get_coursemodule_from_instance('data', $dataid)) {
continue;
}
$datacontext = context_module::instance($cm->id);
$ratingdeloptions->contextid = $datacontext->id;
$rm->delete_ratings($ratingdeloptions);
}
}
if (empty($data->reset_gradebook_grades)) {
// remove all grades from gradebook
data_reset_gradebook($data->courseid);
}
$status[] = array('component'=>$componentstr, 'item'=>get_string('deleteallratings'), 'error'=>false);
}
// remove all comments
if (!empty($data->reset_data_comments)) {
$DB->delete_records_select('comments', "itemid IN ($allrecordssql) AND commentarea='database_entry'", array($data->courseid));
$status[] = array('component'=>$componentstr, 'item'=>get_string('deleteallcomments'), 'error'=>false);
}
// updating dates - shift may be negative too
if ($data->timeshift) {
shift_course_mod_dates('data', array('timeavailablefrom', 'timeavailableto', 'timeviewfrom', 'timeviewto'), $data->timeshift, $data->courseid);
$status[] = array('component'=>$componentstr, 'item'=>get_string('datechanged'), 'error'=>false);
}
return $status;
}
/**
* Returns all other caps used in module
*
* @return array
*/
function data_get_extra_capabilities() {
return array('moodle/site:accessallgroups', 'moodle/site:viewfullnames', 'moodle/rating:view', 'moodle/rating:viewany', 'moodle/rating:viewall', 'moodle/rating:rate', 'moodle/comment:view', 'moodle/comment:post', 'moodle/comment:delete');
}
/**
* @param string $feature FEATURE_xx constant for requested feature
* @return mixed True if module supports feature, null if doesn't know
*/
function data_supports($feature) {
switch($feature) {
case FEATURE_GROUPS: return true;
case FEATURE_GROUPINGS: return true;
case FEATURE_MOD_INTRO: return true;
case FEATURE_COMPLETION_TRACKS_VIEWS: return true;
case FEATURE_GRADE_HAS_GRADE: return true;
case FEATURE_GRADE_OUTCOMES: return true;
case FEATURE_RATE: return true;
case FEATURE_BACKUP_MOODLE2: return true;
case FEATURE_SHOW_DESCRIPTION: return true;
default: return null;
}
}
/**
* @global object
* @param array $export
* @param string $delimiter_name
* @param object $database
* @param int $count
* @param bool $return
* @return string|void
*/
function data_export_csv($export, $delimiter_name, $database, $count, $return=false) {
global $CFG;
require_once($CFG->libdir . '/csvlib.class.php');
$filename = $database . '-' . $count . '-record';
if ($count > 1) {
$filename .= 's';
}
if ($return) {
return csv_export_writer::print_array($export, $delimiter_name, '"', true);
} else {
csv_export_writer::download_array($filename, $export, $delimiter_name);
}
}
/**
* @global object
* @param array $export
* @param string $dataname
* @param int $count
* @return string
*/
function data_export_xls($export, $dataname, $count) {
global $CFG;
require_once("$CFG->libdir/excellib.class.php");
$filename = clean_filename("{$dataname}-{$count}_record");
if ($count > 1) {
$filename .= 's';
}
$filename .= clean_filename('-' . gmdate("Ymd_Hi"));
$filename .= '.xls';
$filearg = '-';
$workbook = new MoodleExcelWorkbook($filearg);
$workbook->send($filename);
$worksheet = array();
$worksheet[0] = $workbook->add_worksheet('');
$rowno = 0;
foreach ($export as $row) {
$colno = 0;
foreach($row as $col) {
$worksheet[0]->write($rowno, $colno, $col);
$colno++;
}
$rowno++;
}
$workbook->close();
return $filename;
}
/**
* @global object
* @param array $export
* @param string $dataname
* @param int $count
* @param string
*/
function data_export_ods($export, $dataname, $count) {
global $CFG;
require_once("$CFG->libdir/odslib.class.php");
$filename = clean_filename("{$dataname}-{$count}_record");
if ($count > 1) {
$filename .= 's';
}
$filename .= clean_filename('-' . gmdate("Ymd_Hi"));
$filename .= '.ods';
$filearg = '-';
$workbook = new MoodleODSWorkbook($filearg);
$workbook->send($filename);
$worksheet = array();
$worksheet[0] = $workbook->add_worksheet('');
$rowno = 0;
foreach ($export as $row) {
$colno = 0;
foreach($row as $col) {
$worksheet[0]->write($rowno, $colno, $col);
$colno++;
}
$rowno++;
}
$workbook->close();
return $filename;
}
/**
* @global object
* @param int $dataid
* @param array $fields
* @param array $selectedfields
* @param int $currentgroup group ID of the current group. This is used for
* exporting data while maintaining group divisions.
* @param object $context the context in which the operation is performed (for capability checks)
* @param bool $userdetails whether to include the details of the record author
* @param bool $time whether to include time created/modified
* @param bool $approval whether to include approval status
* @return array
*/
function data_get_exportdata($dataid, $fields, $selectedfields, $currentgroup=0, $context=null,
$userdetails=false, $time=false, $approval=false) {
global $DB;
if (is_null($context)) {
$context = context_system::instance();
}
// exporting user data needs special permission
$userdetails = $userdetails && has_capability('mod/data:exportuserinfo', $context);
$exportdata = array();
// populate the header in first row of export
foreach($fields as $key => $field) {
if (!in_array($field->field->id, $selectedfields)) {
// ignore values we aren't exporting
unset($fields[$key]);
} else {
$exportdata[0][] = $field->field->name;
}
}
if ($userdetails) {
$exportdata[0][] = get_string('user');
$exportdata[0][] = get_string('username');
$exportdata[0][] = get_string('email');
}
if ($time) {
$exportdata[0][] = get_string('timeadded', 'data');
$exportdata[0][] = get_string('timemodified', 'data');
}
if ($approval) {
$exportdata[0][] = get_string('approved', 'data');
}
$datarecords = $DB->get_records('data_records', array('dataid'=>$dataid));
ksort($datarecords);
$line = 1;
foreach($datarecords as $record) {
// get content indexed by fieldid
if ($currentgroup) {
$select = 'SELECT c.fieldid, c.content, c.content1, c.content2, c.content3, c.content4 FROM {data_content} c, {data_records} r WHERE c.recordid = ? AND r.id = c.recordid AND r.groupid = ?';
$where = array($record->id, $currentgroup);
} else {
$select = 'SELECT fieldid, content, content1, content2, content3, content4 FROM {data_content} WHERE recordid = ?';
$where = array($record->id);
}
if( $content = $DB->get_records_sql($select, $where) ) {
foreach($fields as $field) {
$contents = '';
if(isset($content[$field->field->id])) {
$contents = $field->export_text_value($content[$field->field->id]);
}
$exportdata[$line][] = $contents;
}
if ($userdetails) { // Add user details to the export data
$userdata = get_complete_user_data('id', $record->userid);
$exportdata[$line][] = fullname($userdata);
$exportdata[$line][] = $userdata->username;
$exportdata[$line][] = $userdata->email;
}
if ($time) { // Add time added / modified
$exportdata[$line][] = userdate($record->timecreated);
$exportdata[$line][] = userdate($record->timemodified);
}
if ($approval) { // Add approval status
$exportdata[$line][] = (int) $record->approved;
}
}
$line++;
}
$line--;
return $exportdata;
}
////////////////////////////////////////////////////////////////////////////////
// File API //
////////////////////////////////////////////////////////////////////////////////
/**
* Lists all browsable file areas
*
* @package mod_data
* @category files
* @param stdClass $course course object
* @param stdClass $cm course module object
* @param stdClass $context context object
* @return array
*/
function data_get_file_areas($course, $cm, $context) {
return array('content' => get_string('areacontent', 'mod_data'));
}
/**
* File browsing support for data module.
*
* @param file_browser $browser
* @param array $areas
* @param stdClass $course
* @param cm_info $cm
* @param context $context
* @param string $filearea
* @param int $itemid
* @param string $filepath
* @param string $filename
* @return file_info_stored file_info_stored instance or null if not found
*/
function data_get_file_info($browser, $areas, $course, $cm, $context, $filearea, $itemid, $filepath, $filename) {
global $CFG, $DB, $USER;
if ($context->contextlevel != CONTEXT_MODULE) {
return null;
}
if (!isset($areas[$filearea])) {
return null;
}
if (is_null($itemid)) {
require_once($CFG->dirroot.'/mod/data/locallib.php');
return new data_file_info_container($browser, $course, $cm, $context, $areas, $filearea);
}
if (!$content = $DB->get_record('data_content', array('id'=>$itemid))) {
return null;
}
if (!$field = $DB->get_record('data_fields', array('id'=>$content->fieldid))) {
return null;
}
if (!$record = $DB->get_record('data_records', array('id'=>$content->recordid))) {
return null;
}
if (!$data = $DB->get_record('data', array('id'=>$field->dataid))) {
return null;
}
//check if approved
if ($data->approval and !$record->approved and !data_isowner($record) and !has_capability('mod/data:approve', $context)) {
return null;
}
// group access
if ($record->groupid) {
$groupmode = groups_get_activity_groupmode($cm, $course);
if ($groupmode == SEPARATEGROUPS and !has_capability('moodle/site:accessallgroups', $context)) {
if (!groups_is_member($record->groupid)) {
return null;
}
}
}
$fieldobj = data_get_field($field, $data, $cm);
$filepath = is_null($filepath) ? '/' : $filepath;
$filename = is_null($filename) ? '.' : $filename;
if (!$fieldobj->file_ok($filepath.$filename)) {
return null;
}
$fs = get_file_storage();
if (!($storedfile = $fs->get_file($context->id, 'mod_data', $filearea, $itemid, $filepath, $filename))) {
return null;
}
// Checks to see if the user can manage files or is the owner.
// TODO MDL-33805 - Do not use userid here and move the capability check above.
if (!has_capability('moodle/course:managefiles', $context) && $storedfile->get_userid() != $USER->id) {
return null;
}
$urlbase = $CFG->wwwroot.'/pluginfile.php';
return new file_info_stored($browser, $context, $storedfile, $urlbase, $itemid, true, true, false, false);
}
/**
* Serves the data attachments. Implements needed access control ;-)
*
* @package mod_data
* @category files
* @param stdClass $course course object
* @param stdClass $cm course module object
* @param stdClass $context context object
* @param string $filearea file area
* @param array $args extra arguments
* @param bool $forcedownload whether or not force download
* @param array $options additional options affecting the file serving
* @return bool false if file not found, does not return if found - justsend the file
*/
function data_pluginfile($course, $cm, $context, $filearea, $args, $forcedownload, array $options=array()) {
global $CFG, $DB;
if ($context->contextlevel != CONTEXT_MODULE) {
return false;
}
require_course_login($course, true, $cm);
if ($filearea === 'content') {
$contentid = (int)array_shift($args);
if (!$content = $DB->get_record('data_content', array('id'=>$contentid))) {
return false;
}
if (!$field = $DB->get_record('data_fields', array('id'=>$content->fieldid))) {
return false;
}
if (!$record = $DB->get_record('data_records', array('id'=>$content->recordid))) {
return false;
}
if (!$data = $DB->get_record('data', array('id'=>$field->dataid))) {
return false;
}
if ($data->id != $cm->instance) {
// hacker attempt - context does not match the contentid
return false;
}
//check if approved
if ($data->approval and !$record->approved and !data_isowner($record) and !has_capability('mod/data:approve', $context)) {
return false;
}
// group access
if ($record->groupid) {
$groupmode = groups_get_activity_groupmode($cm, $course);
if ($groupmode == SEPARATEGROUPS and !has_capability('moodle/site:accessallgroups', $context)) {
if (!groups_is_member($record->groupid)) {
return false;
}
}
}
$fieldobj = data_get_field($field, $data, $cm);
$relativepath = implode('/', $args);
$fullpath = "/$context->id/mod_data/content/$content->id/$relativepath";
if (!$fieldobj->file_ok($relativepath)) {
return false;
}
$fs = get_file_storage();
if (!$file = $fs->get_file_by_hash(sha1($fullpath)) or $file->is_directory()) {
return false;
}
// finally send the file
send_stored_file($file, 0, 0, true, $options); // download MUST be forced - security!
}
return false;
}
function data_extend_navigation($navigation, $course, $module, $cm) {
global $CFG, $OUTPUT, $USER, $DB;
$rid = optional_param('rid', 0, PARAM_INT);
$data = $DB->get_record('data', array('id'=>$cm->instance));
$currentgroup = groups_get_activity_group($cm);
$groupmode = groups_get_activity_groupmode($cm);
$numentries = data_numentries($data);
/// Check the number of entries required against the number of entries already made (doesn't apply to teachers)
if ($data->requiredentries > 0 && $numentries < $data->requiredentries && !has_capability('mod/data:manageentries', context_module::instance($cm->id))) {
$data->entriesleft = $data->requiredentries - $numentries;
$entriesnode = $navigation->add(get_string('entrieslefttoadd', 'data', $data));
$entriesnode->add_class('note');
}
$navigation->add(get_string('list', 'data'), new moodle_url('/mod/data/view.php', array('d'=>$cm->instance)));
if (!empty($rid)) {
$navigation->add(get_string('single', 'data'), new moodle_url('/mod/data/view.php', array('d'=>$cm->instance, 'rid'=>$rid)));
} else {
$navigation->add(get_string('single', 'data'), new moodle_url('/mod/data/view.php', array('d'=>$cm->instance, 'mode'=>'single')));
}
$navigation->add(get_string('search', 'data'), new moodle_url('/mod/data/view.php', array('d'=>$cm->instance, 'mode'=>'asearch')));
}
/**
* Adds module specific settings to the settings block
*
* @param settings_navigation $settings The settings navigation object
* @param navigation_node $datanode The node to add module settings to
*/
function data_extend_settings_navigation(settings_navigation $settings, navigation_node $datanode) {
global $PAGE, $DB, $CFG, $USER;
$data = $DB->get_record('data', array("id" => $PAGE->cm->instance));
$currentgroup = groups_get_activity_group($PAGE->cm);
$groupmode = groups_get_activity_groupmode($PAGE->cm);
if (data_user_can_add_entry($data, $currentgroup, $groupmode, $PAGE->cm->context)) { // took out participation list here!
if (empty($editentry)) { //TODO: undefined
$addstring = get_string('add', 'data');
} else {
$addstring = get_string('editentry', 'data');
}
$datanode->add($addstring, new moodle_url('/mod/data/edit.php', array('d'=>$PAGE->cm->instance)));
}
if (has_capability(DATA_CAP_EXPORT, $PAGE->cm->context)) {
// The capability required to Export database records is centrally defined in 'lib.php'
// and should be weaker than those required to edit Templates, Fields and Presets.
$datanode->add(get_string('exportentries', 'data'), new moodle_url('/mod/data/export.php', array('d'=>$data->id)));
}
if (has_capability('mod/data:manageentries', $PAGE->cm->context)) {
$datanode->add(get_string('importentries', 'data'), new moodle_url('/mod/data/import.php', array('d'=>$data->id)));
}
if (has_capability('mod/data:managetemplates', $PAGE->cm->context)) {
$currenttab = '';
if ($currenttab == 'list') {
$defaultemplate = 'listtemplate';
} else if ($currenttab == 'add') {
$defaultemplate = 'addtemplate';
} else if ($currenttab == 'asearch') {
$defaultemplate = 'asearchtemplate';
} else {
$defaultemplate = 'singletemplate';
}
$templates = $datanode->add(get_string('templates', 'data'));
$templatelist = array ('listtemplate', 'singletemplate', 'asearchtemplate', 'addtemplate', 'rsstemplate', 'csstemplate', 'jstemplate');
foreach ($templatelist as $template) {
$templates->add(get_string($template, 'data'), new moodle_url('/mod/data/templates.php', array('d'=>$data->id,'mode'=>$template)));
}
$datanode->add(get_string('fields', 'data'), new moodle_url('/mod/data/field.php', array('d'=>$data->id)));
$datanode->add(get_string('presets', 'data'), new moodle_url('/mod/data/preset.php', array('d'=>$data->id)));
}
if (!empty($CFG->enablerssfeeds) && !empty($CFG->data_enablerssfeeds) && $data->rssarticles > 0) {
require_once("$CFG->libdir/rsslib.php");
$string = get_string('rsstype','forum');
$url = new moodle_url(rss_get_url($PAGE->cm->context->id, $USER->id, 'mod_data', $data->id));
$datanode->add($string, $url, settings_navigation::TYPE_SETTING, null, null, new pix_icon('i/rss', ''));
}
}
/**
* Save the database configuration as a preset.
*
* @param stdClass $course The course the database module belongs to.
* @param stdClass $cm The course module record
* @param stdClass $data The database record
* @param string $path
* @return bool
*/
function data_presets_save($course, $cm, $data, $path) {
global $USER;
$fs = get_file_storage();
$filerecord = new stdClass;
$filerecord->contextid = DATA_PRESET_CONTEXT;
$filerecord->component = DATA_PRESET_COMPONENT;
$filerecord->filearea = DATA_PRESET_FILEAREA;
$filerecord->itemid = 0;
$filerecord->filepath = '/'.$path.'/';
$filerecord->userid = $USER->id;
$filerecord->filename = 'preset.xml';
$fs->create_file_from_string($filerecord, data_presets_generate_xml($course, $cm, $data));
$filerecord->filename = 'singletemplate.html';
$fs->create_file_from_string($filerecord, $data->singletemplate);
$filerecord->filename = 'listtemplateheader.html';
$fs->create_file_from_string($filerecord, $data->listtemplateheader);
$filerecord->filename = 'listtemplate.html';
$fs->create_file_from_string($filerecord, $data->listtemplate);
$filerecord->filename = 'listtemplatefooter.html';
$fs->create_file_from_string($filerecord, $data->listtemplatefooter);
$filerecord->filename = 'addtemplate.html';
$fs->create_file_from_string($filerecord, $data->addtemplate);
$filerecord->filename = 'rsstemplate.html';
$fs->create_file_from_string($filerecord, $data->rsstemplate);
$filerecord->filename = 'rsstitletemplate.html';
$fs->create_file_from_string($filerecord, $data->rsstitletemplate);
$filerecord->filename = 'csstemplate.css';
$fs->create_file_from_string($filerecord, $data->csstemplate);
$filerecord->filename = 'jstemplate.js';
$fs->create_file_from_string($filerecord, $data->jstemplate);
$filerecord->filename = 'asearchtemplate.html';
$fs->create_file_from_string($filerecord, $data->asearchtemplate);
return true;
}
/**
* Generates the XML for the database module provided
*
* @global moodle_database $DB
* @param stdClass $course The course the database module belongs to.
* @param stdClass $cm The course module record
* @param stdClass $data The database record
* @return string The XML for the preset
*/
function data_presets_generate_xml($course, $cm, $data) {
global $DB;
// Assemble "preset.xml":
$presetxmldata = "\n\n";
// Raw settings are not preprocessed during saving of presets
$raw_settings = array(
'intro',
'comments',
'requiredentries',
'requiredentriestoview',
'maxentries',
'rssarticles',
'approval',
'defaultsortdir'
);
$presetxmldata .= "\n";
// First, settings that do not require any conversion
foreach ($raw_settings as $setting) {
$presetxmldata .= "<$setting>" . htmlspecialchars($data->$setting) . "\n";
}
// Now specific settings
if ($data->defaultsort > 0 && $sortfield = data_get_field_from_id($data->defaultsort, $data)) {
$presetxmldata .= '' . htmlspecialchars($sortfield->field->name) . "\n";
} else {
$presetxmldata .= "0\n";
}
$presetxmldata .= "\n\n";
// Now for the fields. Grab all that are non-empty
$fields = $DB->get_records('data_fields', array('dataid'=>$data->id));
ksort($fields);
if (!empty($fields)) {
foreach ($fields as $field) {
$presetxmldata .= "\n";
foreach ($field as $key => $value) {
if ($value != '' && $key != 'id' && $key != 'dataid') {
$presetxmldata .= "<$key>" . htmlspecialchars($value) . "\n";
}
}
$presetxmldata .= "\n\n";
}
}
$presetxmldata .= '';
return $presetxmldata;
}
function data_presets_export($course, $cm, $data, $tostorage=false) {
global $CFG, $DB;
$presetname = clean_filename($data->name) . '-preset-' . gmdate("Ymd_Hi");
$exportsubdir = "mod_data/presetexport/$presetname";
make_temp_directory($exportsubdir);
$exportdir = "$CFG->tempdir/$exportsubdir";
// Assemble "preset.xml":
$presetxmldata = data_presets_generate_xml($course, $cm, $data);
// After opening a file in write mode, close it asap
$presetxmlfile = fopen($exportdir . '/preset.xml', 'w');
fwrite($presetxmlfile, $presetxmldata);
fclose($presetxmlfile);
// Now write the template files
$singletemplate = fopen($exportdir . '/singletemplate.html', 'w');
fwrite($singletemplate, $data->singletemplate);
fclose($singletemplate);
$listtemplateheader = fopen($exportdir . '/listtemplateheader.html', 'w');
fwrite($listtemplateheader, $data->listtemplateheader);
fclose($listtemplateheader);
$listtemplate = fopen($exportdir . '/listtemplate.html', 'w');
fwrite($listtemplate, $data->listtemplate);
fclose($listtemplate);
$listtemplatefooter = fopen($exportdir . '/listtemplatefooter.html', 'w');
fwrite($listtemplatefooter, $data->listtemplatefooter);
fclose($listtemplatefooter);
$addtemplate = fopen($exportdir . '/addtemplate.html', 'w');
fwrite($addtemplate, $data->addtemplate);
fclose($addtemplate);
$rsstemplate = fopen($exportdir . '/rsstemplate.html', 'w');
fwrite($rsstemplate, $data->rsstemplate);
fclose($rsstemplate);
$rsstitletemplate = fopen($exportdir . '/rsstitletemplate.html', 'w');
fwrite($rsstitletemplate, $data->rsstitletemplate);
fclose($rsstitletemplate);
$csstemplate = fopen($exportdir . '/csstemplate.css', 'w');
fwrite($csstemplate, $data->csstemplate);
fclose($csstemplate);
$jstemplate = fopen($exportdir . '/jstemplate.js', 'w');
fwrite($jstemplate, $data->jstemplate);
fclose($jstemplate);
$asearchtemplate = fopen($exportdir . '/asearchtemplate.html', 'w');
fwrite($asearchtemplate, $data->asearchtemplate);
fclose($asearchtemplate);
// Check if all files have been generated
if (! is_directory_a_preset($exportdir)) {
print_error('generateerror', 'data');
}
$filenames = array(
'preset.xml',
'singletemplate.html',
'listtemplateheader.html',
'listtemplate.html',
'listtemplatefooter.html',
'addtemplate.html',
'rsstemplate.html',
'rsstitletemplate.html',
'csstemplate.css',
'jstemplate.js',
'asearchtemplate.html'
);
$filelist = array();
foreach ($filenames as $filename) {
$filelist[$filename] = $exportdir . '/' . $filename;
}
$exportfile = $exportdir.'.zip';
file_exists($exportfile) && unlink($exportfile);
$fp = get_file_packer('application/zip');
$fp->archive_to_pathname($filelist, $exportfile);
foreach ($filelist as $file) {
unlink($file);
}
rmdir($exportdir);
// Return the full path to the exported preset file:
return $exportfile;
}
/**
* Running addtional permission check on plugin, for example, plugins
* may have switch to turn on/off comments option, this callback will
* affect UI display, not like pluginname_comment_validate only throw
* exceptions.
* Capability check has been done in comment->check_permissions(), we
* don't need to do it again here.
*
* @package mod_data
* @category comment
*
* @param stdClass $comment_param {
* context => context the context object
* courseid => int course id
* cm => stdClass course module object
* commentarea => string comment area
* itemid => int itemid
* }
* @return array
*/
function data_comment_permissions($comment_param) {
global $CFG, $DB;
if (!$record = $DB->get_record('data_records', array('id'=>$comment_param->itemid))) {
throw new comment_exception('invalidcommentitemid');
}
if (!$data = $DB->get_record('data', array('id'=>$record->dataid))) {
throw new comment_exception('invalidid', 'data');
}
if ($data->comments) {
return array('post'=>true, 'view'=>true);
} else {
return array('post'=>false, 'view'=>false);
}
}
/**
* Validate comment parameter before perform other comments actions
*
* @package mod_data
* @category comment
*
* @param stdClass $comment_param {
* context => context the context object
* courseid => int course id
* cm => stdClass course module object
* commentarea => string comment area
* itemid => int itemid
* }
* @return boolean
*/
function data_comment_validate($comment_param) {
global $DB;
// validate comment area
if ($comment_param->commentarea != 'database_entry') {
throw new comment_exception('invalidcommentarea');
}
// validate itemid
if (!$record = $DB->get_record('data_records', array('id'=>$comment_param->itemid))) {
throw new comment_exception('invalidcommentitemid');
}
if (!$data = $DB->get_record('data', array('id'=>$record->dataid))) {
throw new comment_exception('invalidid', 'data');
}
if (!$course = $DB->get_record('course', array('id'=>$data->course))) {
throw new comment_exception('coursemisconf');
}
if (!$cm = get_coursemodule_from_instance('data', $data->id, $course->id)) {
throw new comment_exception('invalidcoursemodule');
}
if (!$data->comments) {
throw new comment_exception('commentsoff', 'data');
}
$context = context_module::instance($cm->id);
//check if approved
if ($data->approval and !$record->approved and !data_isowner($record) and !has_capability('mod/data:approve', $context)) {
throw new comment_exception('notapproved', 'data');
}
// group access
if ($record->groupid) {
$groupmode = groups_get_activity_groupmode($cm, $course);
if ($groupmode == SEPARATEGROUPS and !has_capability('moodle/site:accessallgroups', $context)) {
if (!groups_is_member($record->groupid)) {
throw new comment_exception('notmemberofgroup');
}
}
}
// validate context id
if ($context->id != $comment_param->context->id) {
throw new comment_exception('invalidcontext');
}
// validation for comment deletion
if (!empty($comment_param->commentid)) {
if ($comment = $DB->get_record('comments', array('id'=>$comment_param->commentid))) {
if ($comment->commentarea != 'database_entry') {
throw new comment_exception('invalidcommentarea');
}
if ($comment->contextid != $comment_param->context->id) {
throw new comment_exception('invalidcontext');
}
if ($comment->itemid != $comment_param->itemid) {
throw new comment_exception('invalidcommentitemid');
}
} else {
throw new comment_exception('invalidcommentid');
}
}
return true;
}
/**
* Return a list of page types
* @param string $pagetype current page type
* @param stdClass $parentcontext Block's parent context
* @param stdClass $currentcontext Current context of block
*/
function data_page_type_list($pagetype, $parentcontext, $currentcontext) {
$module_pagetype = array('mod-data-*'=>get_string('page-mod-data-x', 'data'));
return $module_pagetype;
}
/**
* Get all of the record ids from a database activity.
*
* @param int $dataid The dataid of the database module.
* @param object $selectdata Contains an additional sql statement for the
* where clause for group and approval fields.
* @param array $params Parameters that coincide with the sql statement.
* @return array $idarray An array of record ids
*/
function data_get_all_recordids($dataid, $selectdata = '', $params = null) {
global $DB;
$initsql = 'SELECT r.id
FROM {data_records} r
WHERE r.dataid = :dataid';
if ($selectdata != '') {
$initsql .= $selectdata;
$params = array_merge(array('dataid' => $dataid), $params);
} else {
$params = array('dataid' => $dataid);
}
$initsql .= ' GROUP BY r.id';
$initrecord = $DB->get_recordset_sql($initsql, $params);
$idarray = array();
foreach ($initrecord as $data) {
$idarray[] = $data->id;
}
// Close the record set and free up resources.
$initrecord->close();
return $idarray;
}
/**
* Get the ids of all the records that match that advanced search criteria
* This goes and loops through each criterion one at a time until it either
* runs out of records or returns a subset of records.
*
* @param array $recordids An array of record ids.
* @param array $searcharray Contains information for the advanced search criteria
* @param int $dataid The data id of the database.
* @return array $recordids An array of record ids.
*/
function data_get_advance_search_ids($recordids, $searcharray, $dataid) {
$searchcriteria = array_keys($searcharray);
// Loop through and reduce the IDs one search criteria at a time.
foreach ($searchcriteria as $key) {
$recordids = data_get_recordids($key, $searcharray, $dataid, $recordids);
// If we don't have anymore IDs then stop.
if (!$recordids) {
break;
}
}
return $recordids;
}
/**
* Gets the record IDs given the search criteria
*
* @param string $alias Record alias.
* @param array $searcharray Criteria for the search.
* @param int $dataid Data ID for the database
* @param array $recordids An array of record IDs.
* @return array $nestarray An arry of record IDs
*/
function data_get_recordids($alias, $searcharray, $dataid, $recordids) {
global $DB;
$nestsearch = $searcharray[$alias];
// searching for content outside of mdl_data_content
if ($alias < 0) {
$alias = '';
}
list($insql, $params) = $DB->get_in_or_equal($recordids, SQL_PARAMS_NAMED);
$nestselect = 'SELECT c' . $alias . '.recordid
FROM {data_content} c' . $alias . ',
{data_fields} f,
{data_records} r,
{user} u ';
$nestwhere = 'WHERE u.id = r.userid
AND f.id = c' . $alias . '.fieldid
AND r.id = c' . $alias . '.recordid
AND r.dataid = :dataid
AND c' . $alias .'.recordid ' . $insql . '
AND ';
$params['dataid'] = $dataid;
if (count($nestsearch->params) != 0) {
$params = array_merge($params, $nestsearch->params);
$nestsql = $nestselect . $nestwhere . $nestsearch->sql;
} else {
$thing = $DB->sql_like($nestsearch->field, ':search1', false);
$nestsql = $nestselect . $nestwhere . $thing . ' GROUP BY c' . $alias . '.recordid';
$params['search1'] = "%$nestsearch->data%";
}
$nestrecords = $DB->get_recordset_sql($nestsql, $params);
$nestarray = array();
foreach ($nestrecords as $data) {
$nestarray[] = $data->recordid;
}
// Close the record set and free up resources.
$nestrecords->close();
return $nestarray;
}
/**
* Returns an array with an sql string for advanced searches and the parameters that go with them.
*
* @param int $sort DATA_*
* @param stdClass $data Data module object
* @param array $recordids An array of record IDs.
* @param string $selectdata Information for the where and select part of the sql statement.
* @param string $sortorder Additional sort parameters
* @return array sqlselect sqlselect['sql'] has the sql string, sqlselect['params'] contains an array of parameters.
*/
function data_get_advanced_search_sql($sort, $data, $recordids, $selectdata, $sortorder) {
global $DB;
$namefields = get_all_user_name_fields(true, 'u');
if ($sort == 0) {
$nestselectsql = 'SELECT r.id, r.approved, r.timecreated, r.timemodified, r.userid, ' . $namefields . '
FROM {data_content} c,
{data_records} r,
{user} u ';
$groupsql = ' GROUP BY r.id, r.approved, r.timecreated, r.timemodified, r.userid, u.firstname, u.lastname, ' . $namefields;
} else {
// Sorting through 'Other' criteria
if ($sort <= 0) {
switch ($sort) {
case DATA_LASTNAME:
$sortcontentfull = "u.lastname";
break;
case DATA_FIRSTNAME:
$sortcontentfull = "u.firstname";
break;
case DATA_APPROVED:
$sortcontentfull = "r.approved";
break;
case DATA_TIMEMODIFIED:
$sortcontentfull = "r.timemodified";
break;
case DATA_TIMEADDED:
default:
$sortcontentfull = "r.timecreated";
}
} else {
$sortfield = data_get_field_from_id($sort, $data);
$sortcontent = $DB->sql_compare_text('c.' . $sortfield->get_sort_field());
$sortcontentfull = $sortfield->get_sort_sql($sortcontent);
}
$nestselectsql = 'SELECT r.id, r.approved, r.timecreated, r.timemodified, r.userid, ' . $namefields . ',
' . $sortcontentfull . '
AS sortorder
FROM {data_content} c,
{data_records} r,
{user} u ';
$groupsql = ' GROUP BY r.id, r.approved, r.timecreated, r.timemodified, r.userid, ' . $namefields . ', ' .$sortcontentfull;
}
// Default to a standard Where statement if $selectdata is empty.
if ($selectdata == '') {
$selectdata = 'WHERE c.recordid = r.id
AND r.dataid = :dataid
AND r.userid = u.id ';
}
// Find the field we are sorting on
if ($sort > 0 or data_get_field_from_id($sort, $data)) {
$selectdata .= ' AND c.fieldid = :sort';
}
// If there are no record IDs then return an sql statment that will return no rows.
if (count($recordids) != 0) {
list($insql, $inparam) = $DB->get_in_or_equal($recordids, SQL_PARAMS_NAMED);
} else {
list($insql, $inparam) = $DB->get_in_or_equal(array('-1'), SQL_PARAMS_NAMED);
}
$nestfromsql = $selectdata . ' AND c.recordid ' . $insql . $groupsql;
$sqlselect['sql'] = "$nestselectsql $nestfromsql $sortorder";
$sqlselect['params'] = $inparam;
return $sqlselect;
}
/**
* Checks to see if the user has permission to delete the preset.
* @param stdClass $context Context object.
* @param stdClass $preset The preset object that we are checking for deletion.
* @return bool Returns true if the user can delete, otherwise false.
*/
function data_user_can_delete_preset($context, $preset) {
global $USER;
if (has_capability('mod/data:manageuserpresets', $context)) {
return true;
} else {
$candelete = false;
if ($preset->userid == $USER->id) {
$candelete = true;
}
return $candelete;
}
}
/**
* Delete a record entry.
*
* @param int $recordid The ID for the record to be deleted.
* @param object $data The data object for this activity.
* @param int $courseid ID for the current course (for logging).
* @param int $cmid The course module ID.
* @return bool True if the record deleted, false if not.
*/
function data_delete_record($recordid, $data, $courseid, $cmid) {
global $DB, $CFG;
if ($deleterecord = $DB->get_record('data_records', array('id' => $recordid))) {
if ($deleterecord->dataid == $data->id) {
if ($contents = $DB->get_records('data_content', array('recordid' => $deleterecord->id))) {
foreach ($contents as $content) {
if ($field = data_get_field_from_id($content->fieldid, $data)) {
$field->delete_content($content->recordid);
}
}
$DB->delete_records('data_content', array('recordid'=>$deleterecord->id));
$DB->delete_records('data_records', array('id'=>$deleterecord->id));
// Delete cached RSS feeds.
if (!empty($CFG->enablerssfeeds)) {
require_once($CFG->dirroot.'/mod/data/rsslib.php');
data_rss_delete_file($data);
}
// Trigger an event for deleting this record.
$event = \mod_data\event\record_deleted::create(array(
'objectid' => $deleterecord->id,
'context' => context_module::instance($cmid),
'courseid' => $courseid,
'other' => array(
'dataid' => $deleterecord->dataid
)
));
$event->add_record_snapshot('data_records', $deleterecord);
$event->trigger();
return true;
}
}
}
return false;
}