question/bank/deletequestion/delete.php

   1 <?php
   2 // This file is part of Moodle - http://moodle.org/
   3 //
   4 // Moodle is free software: you can redistribute it and/or modify
   5 // it under the terms of the GNU General Public License as published by
   6 // the Free Software Foundation, either version 3 of the License, or
   7 // (at your option) any later version.
   8 //
   9 // Moodle is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU General Public License
  15 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 /**
  18  * Delete question page.
  19  *
  20  * This code is based on question/classes/bank/view.php
  21  *
  22  * @package    qbank_deletequestion
  23  * @copyright  2021 Catalyst IT Australia Pty Ltd
  24  * @author     Safat Shahin <safatshahin@catalyst-au.net>
  25  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  26  */
  27
  28 require_once(__DIR__ . '/../../../config.php');
  29 require_once(__DIR__ . '/../../editlib.php');
  30 global $DB, $OUTPUT, $PAGE, $COURSE;
  31
  32 $deleteselected = optional_param('deleteselected', false, PARAM_BOOL);
  33 $returnurl = optional_param('returnurl', 0, PARAM_LOCALURL);
  34 $cmid = optional_param('cmid', 0, PARAM_INT);
  35 $courseid = optional_param('courseid', 0, PARAM_INT);
  36 $deleteall = optional_param('deleteall', false, PARAM_BOOL);
  37
  38 if ($returnurl) {
  39     $returnurl = new moodle_url($returnurl);
  40 }
  41
  42 \core_question\local\bank\helper::require_plugin_enabled('qbank_deletequestion');
  43
  44 if ($cmid) {
  45     list($module, $cm) = get_module_from_cmid($cmid);
  46     require_login($cm->course, false, $cm);
  47     $thiscontext = context_module::instance($cmid);
  48 } else if ($courseid) {
  49     require_login($courseid, false);
  50     $thiscontext = context_course::instance($courseid);
  51 } else {
  52     throw new moodle_exception('missingcourseorcmid', 'question');
  53 }
  54
  55 $contexts = new core_question\local\bank\question_edit_contexts($thiscontext);
  56 $url = new moodle_url('/question/bank/deletequestion/delete.php');
  57
  58 $PAGE->set_url($url);
  59 $streditingquestions = get_string('deletequestion', 'qbank_deletequestion');
  60 $PAGE->set_title($streditingquestions);
  61 $PAGE->set_heading($COURSE->fullname);
  62 $PAGE->activityheader->disable();
  63 $PAGE->set_secondary_active_tab("questionbank");
  64
  65 // Unhide a question.
  66 if (($unhide = optional_param('unhide', '', PARAM_INT)) and confirm_sesskey()) {
  67     question_require_capability_on($unhide, 'edit');
  68     $DB->set_field('question_versions', 'status',
  69         \core_question\local\bank\question_version_status::QUESTION_STATUS_READY, ['questionid' => $unhide]);
  70
  71     // Purge these questions from the cache.
  72     \question_bank::notify_question_edited($unhide);
  73
  74     redirect($returnurl);
  75 }
  76
  77 // If user has already confirmed the action.
  78 if ($deleteselected && ($confirm = optional_param('confirm', '', PARAM_ALPHANUM))
  79         && confirm_sesskey()) {
  80     $deleteselected = required_param('deleteselected', PARAM_RAW);
  81     if ($confirm == md5($deleteselected)) {
  82         if ($questionlist = explode(',', $deleteselected)) {
  83             \qbank_deletequestion\helper::delete_questions($questionlist, $deleteall);
  84         }
  85         redirect($returnurl);
  86     } else {
  87         throw new \moodle_exception('invalidconfirm', 'question');
  88     }
  89 }
  90
  91 echo $OUTPUT->header();
  92
  93 if ($deleteselected) {
  94     // Make a list of all the questions that are selected.
  95     $rawquestions = $_REQUEST; // This code is called by both POST forms and GET links, so cannot use data_submitted.
  96     $questionlist = '';  // Comma separated list of ids of questions to be deleted.
  97     foreach ($rawquestions as $key => $value) {    // Parse input for question ids.
  98         if (preg_match('!^q([0-9]+)$!', $key, $matches)) {
  99             $key = $matches[1];
 100             $questionlist .= $key.',';
 101             question_require_capability_on((int)$key, 'edit');
 102         }
 103     }
 104     if (!$questionlist) { // No questions were selected.
 105         redirect($returnurl);
 106     }
 107     $questionlist = rtrim($questionlist, ',');
 108
 109     $deleteurl = new \moodle_url(
 110         '/question/bank/deletequestion/delete.php',
 111         [
 112             'deleteselected' => $questionlist,
 113             'deleteall' => $deleteall,
 114             'confirm' => md5($questionlist),
 115             'sesskey' => sesskey(),
 116             'returnurl' => $returnurl->out_as_local_url(false),
 117             'cmid' => $cmid,
 118             'courseid' => $courseid,
 119         ],
 120     );
 121     $continue = new \single_button($deleteurl, get_string('delete'), 'post');
 122
 123     $questionids = explode(',', $questionlist);
 124     [$displayoptions, $message] = qbank_deletequestion\helper::get_delete_confirmation_message($questionids,
 125         $deleteall);
 126
 127     echo $OUTPUT->confirm($message, $continue, $returnurl, $displayoptions);
 128 }
 129
 130 echo $OUTPUT->footer();