.
/**
* Delete book chapter
*
* @package mod_book
* @copyright 2004-2011 Petr Skoda {@link http://skodak.org}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
require(dirname(__FILE__).'/../../config.php');
require_once(dirname(__FILE__).'/locallib.php');
$id = required_param('id', PARAM_INT); // Course Module ID
$chapterid = required_param('chapterid', PARAM_INT); // Chapter ID
$confirm = optional_param('confirm', 0, PARAM_BOOL);
$cm = get_coursemodule_from_id('book', $id, 0, false, MUST_EXIST);
$course = $DB->get_record('course', array('id'=>$cm->course), '*', MUST_EXIST);
$book = $DB->get_record('book', array('id'=>$cm->instance), '*', MUST_EXIST);
require_login($course, false, $cm);
require_sesskey();
$context = context_module::instance($cm->id);
require_capability('mod/book:edit', $context);
$PAGE->set_url('/mod/book/delete.php', array('id'=>$id, 'chapterid'=>$chapterid));
$chapter = $DB->get_record('book_chapters', array('id'=>$chapterid, 'bookid'=>$book->id), '*', MUST_EXIST);
// Header and strings.
$PAGE->set_title($book->name);
$PAGE->set_heading($course->fullname);
// Form processing.
if ($confirm) { // the operation was confirmed.
$fs = get_file_storage();
if (!$chapter->subchapter) { // Delete all its sub-chapters if any
$chapters = $DB->get_recordset('book_chapters', array('bookid'=>$book->id), 'pagenum');
$found = false;
foreach ($chapters as $ch) {
if ($ch->id == $chapter->id) {
$found = true;
} else if ($found and $ch->subchapter) {
$fs->delete_area_files($context->id, 'mod_book', 'chapter', $ch->id);
$DB->delete_records('book_chapters', array('id'=>$ch->id));
\mod_book\event\chapter_deleted::create_from_chapter($book, $context, $ch)->trigger();
} else if ($found) {
break;
}
}
$chapters->close();
}
$fs->delete_area_files($context->id, 'mod_book', 'chapter', $chapter->id);
$DB->delete_records('book_chapters', array('id'=>$chapter->id));
\mod_book\event\chapter_deleted::create_from_chapter($book, $context, $chapter)->trigger();
book_preload_chapters($book); // Fix structure.
$DB->set_field('book', 'revision', $book->revision+1, array('id'=>$book->id));
redirect('view.php?id='.$cm->id);
}
echo $OUTPUT->header();
echo $OUTPUT->heading($book->name);
// The operation has not been confirmed yet so ask the user to do so.
if ($chapter->subchapter) {
$strconfirm = get_string('confchapterdelete', 'mod_book');
} else {
$strconfirm = get_string('confchapterdeleteall', 'mod_book');
}
echo '
';
$continue = new moodle_url('/mod/book/delete.php', array('id'=>$cm->id, 'chapterid'=>$chapter->id, 'confirm'=>1));
$cancel = new moodle_url('/mod/book/view.php', array('id'=>$cm->id, 'chapterid'=>$chapter->id));
$title = format_string($chapter->title);
echo $OUTPUT->confirm("$title$strconfirm
", $continue, $cancel);
echo $OUTPUT->footer();