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109 lines
4.1 KiB
109 lines
4.1 KiB
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Delete book chapter
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*
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* @package mod_book
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* @copyright 2004-2011 Petr Skoda {@link http://skodak.org}
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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require(__DIR__.'/../../config.php');
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require_once(__DIR__.'/locallib.php');
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// Course Module ID.
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$id = required_param('id', PARAM_INT);
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// Chapter ID.
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$chapterid = required_param('chapterid', PARAM_INT);
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$confirm = optional_param('confirm', 0, PARAM_BOOL);
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$cm = get_coursemodule_from_id('book', $id, 0, false, MUST_EXIST);
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$course = $DB->get_record('course', ['id' => $cm->course], '*', MUST_EXIST);
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$book = $DB->get_record('book', ['id' => $cm->instance], '*', MUST_EXIST);
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$chapter = $DB->get_record('book_chapters', ['id' => $chapterid, 'bookid' => $book->id], '*', MUST_EXIST);
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require_login($course, false, $cm);
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require_sesskey();
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$context = context_module::instance($cm->id);
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require_capability('mod/book:edit', $context);
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$PAGE->set_url('/mod/book/delete.php', ['id' => $id, 'chapterid' => $chapterid]);
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if ($confirm) {
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// The operation was confirmed.
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$fs = get_file_storage();
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$subchaptercount = 0;
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if (!$chapter->subchapter) {
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// This is a top-level chapter.
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// Make sure to remove any sub-chapters if there are any.
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$chapters = $DB->get_recordset_select('book_chapters', 'bookid = :bookid AND pagenum > :pagenum', [
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'bookid' => $book->id,
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'pagenum' => $chapter->pagenum,
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], 'pagenum');
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foreach ($chapters as $ch) {
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if (!$ch->subchapter) {
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// This is a new chapter. Any subsequent subchapters will be part of a different chapter.
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break;
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} else {
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// This is subchapter of the chapter being removed.
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core_tag_tag::remove_all_item_tags('mod_book', 'book_chapters', $ch->id);
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$fs->delete_area_files($context->id, 'mod_book', 'chapter', $ch->id);
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$DB->delete_records('book_chapters', ['id' => $ch->id]);
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\mod_book\event\chapter_deleted::create_from_chapter($book, $context, $ch)->trigger();
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$subchaptercount++;
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}
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}
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$chapters->close();
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}
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// Now delete the actual chapter.
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core_tag_tag::remove_all_item_tags('mod_book', 'book_chapters', $chapter->id);
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$fs->delete_area_files($context->id, 'mod_book', 'chapter', $chapter->id);
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$DB->delete_records('book_chapters', ['id' => $chapter->id]);
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\mod_book\event\chapter_deleted::create_from_chapter($book, $context, $chapter)->trigger();
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// Ensure that the book structure is correct.
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// book_preload_chapters will fix parts including the pagenum.
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$chapters = book_preload_chapters($book);
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book_add_fake_block($chapters, $chapter, $book, $cm);
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// Bump the book revision.
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$DB->set_field('book', 'revision', $book->revision + 1, ['id' => $book->id]);
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if ($subchaptercount) {
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$message = get_string('chapterandsubchaptersdeleted', 'mod_book', (object) [
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'title' => format_string($chapter->title),
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'subchapters' => $subchaptercount,
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]);
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} else {
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$message = get_string('chapterdeleted', 'mod_book', (object) [
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'title' => format_string($chapter->title),
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]);
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}
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redirect(new moodle_url('/mod/book/view.php', ['id' => $cm->id]), $message);
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}
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redirect(new moodle_url('/mod/book/view.php', ['id' => $cm->id]));
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