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<?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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namespace tool_brickfield\local\areas\mod_book;
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use tool_brickfield\area_base;
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/**
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* Book chapter content observer.
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*
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* @package tool_brickfield
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* @copyright 2020 onward: Brickfield Education Labs, www.brickfield.ie
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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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class chaptercontent extends area_base {
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/**
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* Get table name.
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* @return string
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*/
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public function get_tablename(): string {
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return 'book_chapters';
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}
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/**
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* Get field name.
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* @return string
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*/
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public function get_fieldname(): string {
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return 'content';
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}
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/**
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* Get table name reference.
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* @return string
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*/
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public function get_ref_tablename(): string {
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return 'book';
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}
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/**
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* Find recordset of the relevant areas.
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* @param \core\event\base $event
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* @return \moodle_recordset|null
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* @throws \coding_exception
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* @throws \dml_exception
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*/
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public function find_relevant_areas(\core\event\base $event): ?\moodle_recordset {
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if ($event->eventname == '\mod_book\event\chapter_updated' || $event->eventname == '\mod_book\event\chapter_created') {
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return $this->find_areas(['contextid' => $event->contextid, 'objectid' => $event->objectid]);
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}
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return null;
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}
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/**
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* Find recordset of the course areas.
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* @param int $courseid
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* @return \moodle_recordset
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* @throws \coding_exception
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* @throws \dml_exception
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*/
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public function find_course_areas(int $courseid): ?\moodle_recordset {
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return $this->find_areas(['courseid' => $courseid]);
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}
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/**
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* Find recordset of areas.
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* @param array $params
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* @return \moodle_recordset
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* @throws \coding_exception
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* @throws \dml_exception
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*/
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protected function find_areas(array $params = []): \moodle_recordset {
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global $DB;
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$where = [];
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if (!empty($params['contextid'])) {
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$where[] = 'ctx.id = :contextid';
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$where[] = 'co.id = :objectid';
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}
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if (!empty($params['courseid'])) {
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$where[] = 'cm.course = :courseid';
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}
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// Filter against approved / non-approved course category listings.
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$this->filterfieldname = 'cm.course';
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$this->get_courseid_filtering();
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if ($this->filter != '') {
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$params = $params + $this->filterparams;
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}
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$rs = $DB->get_recordset_sql('SELECT
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' . $this->get_type() . ' AS type,
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ctx.id AS contextid,
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' . $this->get_standard_area_fields_sql() . '
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co.id AS itemid,
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' . $this->get_reftable_field_sql() . '
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t.id AS refid,
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cm.id AS cmid,
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cm.course AS courseid,
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co.'.$this->get_fieldname().' AS content
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FROM {book} t
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JOIN {course_modules} cm ON cm.instance = t.id
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JOIN {modules} m ON m.id = cm.module AND m.name = :preftablename2
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JOIN {context} ctx ON ctx.instanceid = cm.id AND ctx.contextlevel = :pctxlevelmodule
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JOIN {'.$this->get_tablename().'} co ON co.bookid = t.id ' .
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($where ? 'WHERE ' . join(' AND ', $where) : '') . $this->filter . '
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ORDER BY t.id, co.id',
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['pctxlevelmodule' => CONTEXT_MODULE,
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'preftablename2' => $this->get_ref_tablename(),
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] + $params);
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return $rs;
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}
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}
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