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/**
* @package tool_xmldb
* @copyright 2003 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
/**
* This class provides the interface for all the edit table actions
*
* Main page of edit table actions, from here fields/indexes/keys edition
* can be invoked, plus links to PHP code generator, view SQL, rearrange
* elements and so on.
*
* @package tool_xmldb
* @copyright 2003 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class edit_table extends XMLDBAction {
/**
* Init method, every subclass will have its own
*/
function init() {
parent::init();
// Set own custom attributes
$this->sesskey_protected = false; // This action doesn't need sesskey protection
// Get needed strings
$this->loadStrings(array(
'change' => 'tool_xmldb',
'vieworiginal' => 'tool_xmldb',
'viewedited' => 'tool_xmldb',
'viewsqlcode' => 'tool_xmldb',
'viewphpcode' => 'tool_xmldb',
'newfield' => 'tool_xmldb',
'newkey' => 'tool_xmldb',
'newindex' => 'tool_xmldb',
'fields' => 'tool_xmldb',
'keys' => 'tool_xmldb',
'indexes' => 'tool_xmldb',
'edit' => 'tool_xmldb',
'up' => 'tool_xmldb',
'down' => 'tool_xmldb',
'delete' => 'tool_xmldb',
'reserved' => 'tool_xmldb',
'back' => 'tool_xmldb',
'viewxml' => 'tool_xmldb',
'pendingchanges' => 'tool_xmldb',
'pendingchangescannotbesaved' => 'tool_xmldb',
'save' => 'tool_xmldb'
));
}
/**
* Invoke method, every class will have its own
* returns true/false on completion, setting both
* errormsg and output as necessary
*/
function invoke() {
parent::invoke();
$result = true;
// Set own core attributes
$this->does_generate = ACTION_GENERATE_HTML;
// These are always here
global $CFG, $XMLDB;
// Do the job, setting result as needed
// Get the dir containing the file
$dirpath = required_param('dir', PARAM_PATH);
$dirpath = $CFG->dirroot . $dirpath;
// Get the correct dirs
if (!empty($XMLDB->dbdirs)) {
$dbdir = $XMLDB->dbdirs[$dirpath];
} else {
return false;
}
// Check if the dir exists and copy it from dbdirs
// (because we need straight load in case of saving from here)
if (!isset($XMLDB->editeddirs[$dirpath])) {
$XMLDB->editeddirs[$dirpath] = unserialize(serialize($dbdir));
}
if (!empty($XMLDB->editeddirs)) {
$editeddir = $XMLDB->editeddirs[$dirpath];
$structure = $editeddir->xml_file->getStructure();
}
$tableparam = required_param('table', PARAM_CLEAN);
if (!$table = $structure->getTable($tableparam)) {
// Arriving here from a name change, looking for the new table name
$tableparam = required_param('name', PARAM_CLEAN);
$table = $structure->getTable($tableparam);
}
$dbdir = $XMLDB->dbdirs[$dirpath];
$origstructure = $dbdir->xml_file->getStructure();
// Add the main form
$o = '';
// Calculate the pending changes / save message
$e = '';
$cansavenow = false;
if ($structure->hasChanged()) {
if (!is_writeable($dirpath . '/install.xml') || !is_writeable($dirpath)) {
$e .= '' . $this->str['pendingchangescannotbesaved'] . '
';
} else {
$e .= '' . $this->str['pendingchanges'] . '
';
$cansavenow = true;
}
}
// Calculate the buttons
$b = ' ';
// The view original XML button
if ($origstructure->getTable($tableparam)) {
$b .= ' [' . $this->str['vieworiginal'] . ']';
} else {
$b .= ' [' . $this->str['vieworiginal'] . ']';
}
// The view edited XML button
if ($table->hasChanged()) {
$b .= ' [' . $this->str['viewedited'] . ']';
} else {
$b .= ' [' . $this->str['viewedited'] . ']';
}
// The new field button
$b .= ' [' . $this->str['newfield'] . ']';
// The new key button
$b .= ' [' . $this->str['newkey'] . ']';
// The new index button
$b .= ' [' . $this->str['newindex'] . ']';
$b .= '
';
$b .= ' ';
// The view sql code button
$b .= '[' .$this->str['viewsqlcode'] . ']';
// The view php code button
$b .= ' [' . $this->str['viewphpcode'] . ']';
// The save button (if possible)
if ($cansavenow) {
$b .= ' [' . $this->str['save'] . ']';
}
// The back to edit xml file button
$b .= ' [' . $this->str['back'] . ']';
$b .= '
';
$o .= $e . $b;
require_once("$CFG->libdir/ddl/sql_generator.php");
$reserved_words = sql_generator::getAllReservedWords();
// Delete any 'changeme' field/key/index
$table->deleteField('changeme');
$table->deleteKey('changeme');
$table->deleteIndex('changeme');
// Add the fields list
$fields = $table->getFields();
if (!empty($fields)) {
$o .= '' . $this->str['fields'] . '
';
$o .= '';
$row = 0;
foreach ($fields as $field) {
// The field name (link to edit - if the field has no uses)
if (!$structure->getFieldUses($table->getName(), $field->getName())) {
$f = '' . $field->getName() . '';
} else {
$f = $field->getName();
}
// Calculate buttons
$b = '| ';
// The edit button (if the field has no uses)
if (!$structure->getFieldUses($table->getName(), $field->getName())) {
$b .= '[' . $this->str['edit'] . ']';
} else {
$b .= '[' . $this->str['edit'] . ']';
}
$b .= ' | ';
// The up button
if ($field->getPrevious()) {
$b .= '[' . $this->str['up'] . ']';
} else {
$b .= '[' . $this->str['up'] . ']';
}
$b .= ' | ';
// The down button
if ($field->getNext()) {
$b .= '[' . $this->str['down'] . ']';
} else {
$b .= '[' . $this->str['down'] . ']';
}
$b .= ' | ';
// The delete button (if we have more than one and it isn't used
if (count($fields) > 1 &&
!$structure->getFieldUses($table->getName(), $field->getName())) {
$b .= '[' . $this->str['delete'] . ']';
} else {
$b .= '[' . $this->str['delete'] . ']';
}
$b .= ' | ';
// The view xml button
$b .= '[' . $this->str['viewxml'] . ']';
// Detect if the table name is a reserved word
if (array_key_exists($field->getName(), $reserved_words)) {
$b .= ' ' . $this->str['reserved'] . '';
}
// The readable info
$r = ' | ' . $field->readableInfo() . ' | ';
// Print table row
$o .= '| ' . $f . $b . $r . ' |
';
$row = ($row + 1) % 2;
}
$o .= '
';
}
// Add the keys list
$keys = $table->getKeys();
if (!empty($keys)) {
$o .= '' . $this->str['keys'] . '
';
$o .= '';
$row = 0;
foreach ($keys as $key) {
// The key name (link to edit - if the key has no uses)
if (!$structure->getKeyUses($table->getName(), $key->getName())) {
$k = '' . $key->getName() . '';
} else {
$k = $key->getName();
}
// Calculate buttons
$b = '| ';
// The edit button (if the key hasn't uses)
if (!$structure->getKeyUses($table->getName(), $key->getName())) {
$b .= '[' . $this->str['edit'] . ']';
} else {
$b .= '[' . $this->str['edit'] . ']';
}
$b .= ' | ';
// The up button
if ($key->getPrevious()) {
$b .= '[' . $this->str['up'] . ']';
} else {
$b .= '[' . $this->str['up'] . ']';
}
$b .= ' | ';
// The down button
if ($key->getNext()) {
$b .= '[' . $this->str['down'] . ']';
} else {
$b .= '[' . $this->str['down'] . ']';
}
$b .= ' | ';
// The delete button (if the key hasn't uses)
if (!$structure->getKeyUses($table->getName(), $key->getName())) {
$b .= '[' . $this->str['delete'] . ']';
} else {
$b .= '[' . $this->str['delete'] . ']';
}
$b .= ' | ';
// The view xml button
$b .= '[' . $this->str['viewxml'] . ']';
// The readable info
$r = ' | ' . $key->readableInfo() . ' | ';
// Print table row
$o .= '| ' . $k . $b . $r .' |
';
$row = ($row + 1) % 2;
}
$o .= '
';
}
// Add the indexes list
$indexes = $table->getIndexes();
if (!empty($indexes)) {
$o .= '' . $this->str['indexes'] . '
';
$o .= '';
}
$this->output = $o;
// Launch postaction if exists (leave this here!)
if ($this->getPostAction() && $result) {
return $this->launch($this->getPostAction());
}
// Return ok if arrived here
return $result;
}
}