Eloy Lafuente
125 lines
4.3 KiB
PHP
125 lines
4.3 KiB
PHP
<?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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* @package moodlecore
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* @subpackage backup-dbops
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* @copyright 2010 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}
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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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/**
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* Non instantiable helper class providing DB support to the @backup_plan class
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*
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* This class contains various static methods available for all the DB operations
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* performed by the @backup_plan (and builder) classes
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*
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* TODO: Finish phpdocs
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*/
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abstract class backup_plan_dbops extends backup_dbops {
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/**
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* Given one course module id, return one array with all the block intances that belong to it
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*/
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public static function get_blockids_from_moduleid($moduleid) {
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global $DB;
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// Get the context of the module
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$contextid = get_context_instance(CONTEXT_MODULE, $moduleid)->id;
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// Get all the block instances which parentcontextid is the module contextid
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$blockids = array();
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$instances = $DB->get_records('block_instances', array('parentcontextid' => $contextid), '', 'id');
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foreach ($instances as $instance) {
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$blockids[] = $instance->id;
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}
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return $blockids;
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}
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/**
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* Given one course id, return one array with all the block intances that belong to it
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*/
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public static function get_blockids_from_courseid($courseid) {
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global $DB;
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// Get the context of the course
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$contextid = get_context_instance(CONTEXT_COURSE, $courseid)->id;
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// Get all the block instances which parentcontextid is the course contextid
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$blockids = array();
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$instances = $DB->get_records('block_instances', array('parentcontextid' => $contextid), '', 'id');
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foreach ($instances as $instance) {
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$blockids[] = $instance->id;
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}
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return $blockids;
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}
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/**
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* Given one section id, return one array with all the course modules that belong to it
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*/
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public static function get_modules_from_sectionid($sectionid) {
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global $DB;
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// Get the course of the section
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$courseid = $DB->get_field('course_sections', 'course', array('id' => $sectionid));
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// Get all course modules belonging to requested section
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$modulesarr = array();
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$modules = $DB->get_records_sql("
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SELECT cm.id, m.name AS modname
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FROM {course_modules} cm
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JOIN {modules} m ON m.id = cm.module
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WHERE cm.course = ?
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AND cm.section = ?", array($courseid, $sectionid));
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foreach ($modules as $module) {
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$module = array('id' => $module->id, 'modname' => $module->modname);
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$modulesarr[] = (object)$module;
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}
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return $modulesarr;
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}
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/**
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* Given one course id, return one array with all the course_sections belonging to it
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*/
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public static function get_sections_from_courseid($courseid) {
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global $DB;
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// Get all sections belonging to requested course
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$sectionsarr = array();
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$sections = $DB->get_records('course_sections', array('course' => $courseid));
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foreach ($sections as $section) {
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$sectionsarr[] = $section->id;
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}
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return $sectionsarr;
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}
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/**
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* Return the wwwroot of the $CFG->mnet_localhost_id host
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* caching it along the request
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*/
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public static function get_mnet_localhost_wwwroot() {
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global $CFG, $DB;
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static $wwwroot = null;
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if (is_null($wwwroot)) {
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$wwwroot = $DB->get_field('mnet_host', 'wwwroot', array('id' => $CFG->mnet_localhost_id));
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}
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return $wwwroot;
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}
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}
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