mod/quiz/overrideedit.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  * This page handles editing and creation of quiz overrides
  19  *
  20  * @package   mod_quiz
  21  * @copyright 2010 Matt Petro
  22  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23  */
  24
  25
  26 require_once(dirname(__FILE__) . '/../../config.php');
  27 require_once($CFG->dirroot.'/mod/quiz/lib.php');
  28 require_once($CFG->dirroot.'/mod/quiz/locallib.php');
  29 require_once($CFG->dirroot.'/mod/quiz/override_form.php');
  30
  31
  32 $cmid = optional_param('cmid', 0, PARAM_INT);
  33 $overrideid = optional_param('id', 0, PARAM_INT);
  34 $action = optional_param('action', null, PARAM_ALPHA);
  35 $reset = optional_param('reset', false, PARAM_BOOL);
  36
  37 $override = null;
  38 if ($overrideid) {
  39
  40     if (! $override = $DB->get_record('quiz_overrides', array('id' => $overrideid))) {
  41         print_error('invalidoverrideid', 'quiz');
  42     }
  43     if (! $quiz = $DB->get_record('quiz', array('id' => $override->quiz))) {
  44         print_error('invalidcoursemodule');
  45     }
  46     if (! $cm = get_coursemodule_from_instance("quiz", $quiz->id, $quiz->course)) {
  47         print_error('invalidcoursemodule');
  48     }
  49 } else if ($cmid) {
  50
  51     if (! $cm = get_coursemodule_from_id('quiz', $cmid)) {
  52         print_error('invalidcoursemodule');
  53     }
  54     if (! $quiz = $DB->get_record('quiz', array('id' => $cm->instance))) {
  55         print_error('invalidcoursemodule');
  56     }
  57 } else {
  58     print_error('invalidcoursemodule');
  59 }
  60 $course = $DB->get_record('course', array('id'=>$cm->course), '*', MUST_EXIST);
  61
  62 $url = new moodle_url('/mod/quiz/overrideedit.php');
  63 if ($action) {
  64     $url->param('action', $action);
  65 }
  66 if ($overrideid) {
  67     $url->param('id', $overrideid);
  68 } else {
  69     $url->param('cmid', $cmid);
  70 }
  71
  72 $PAGE->set_url($url);
  73
  74 require_login($course, false, $cm);
  75
  76 $context = context_module::instance($cm->id);
  77
  78 // Add or edit an override.
  79 require_capability('mod/quiz:manageoverrides', $context);
  80
  81 if ($overrideid) {
  82     // Editing an override.
  83     $data = clone $override;
  84 } else {
  85     // Creating a new override.
  86     $data = new stdClass();
  87 }
  88
  89 // Merge quiz defaults with data.
  90 $keys = array('timeopen', 'timeclose', 'timelimit', 'attempts', 'password');
  91 foreach ($keys as $key) {
  92     if (!isset($data->{$key}) || $reset) {
  93         $data->{$key} = $quiz->{$key};
  94     }
  95 }
  96
  97 // If we are duplicating an override, then clear the user/group and override id
  98 // since they will change.
  99 if ($action === 'duplicate') {
 100     $override->id = null;
 101     $override->userid = null;
 102     $override->groupid = null;
 103 }
 104
 105 // True if group-based override.
 106 $groupmode = !empty($data->groupid) || ($action === 'addgroup' && empty($overrideid));
 107
 108 $overridelisturl = new moodle_url('/mod/quiz/overrides.php', array('cmid'=>$cm->id));
 109 if (!$groupmode) {
 110     $overridelisturl->param('mode', 'user');
 111 }
 112
 113 // Setup the form.
 114 $mform = new quiz_override_form($url, $cm, $quiz, $context, $groupmode, $override);
 115 $mform->set_data($data);
 116
 117 if ($mform->is_cancelled()) {
 118     redirect($overridelisturl);
 119
 120 } else if (optional_param('resetbutton', 0, PARAM_ALPHA)) {
 121     $url->param('reset', true);
 122     redirect($url);
 123
 124 } else if ($fromform = $mform->get_data()) {
 125     // Process the data.
 126     $fromform->quiz = $quiz->id;
 127
 128     // Replace unchanged values with null.
 129     foreach ($keys as $key) {
 130         if ($fromform->{$key} == $quiz->{$key}) {
 131             $fromform->{$key} = null;
 132         }
 133     }
 134
 135     // See if we are replacing an existing override.
 136     $userorgroupchanged = false;
 137     if (empty($override->id)) {
 138         $userorgroupchanged = true;
 139     } else if (!empty($fromform->userid)) {
 140         $userorgroupchanged = $fromform->userid !== $override->userid;
 141     } else {
 142         $userorgroupchanged = $fromform->groupid !== $override->groupid;
 143     }
 144
 145     if ($userorgroupchanged) {
 146         $conditions = array(
 147                 'quiz' => $quiz->id,
 148                 'userid' => empty($fromform->userid)? null : $fromform->userid,
 149                 'groupid' => empty($fromform->groupid)? null : $fromform->groupid);
 150         if ($oldoverride = $DB->get_record('quiz_overrides', $conditions)) {
 151             // There is an old override, so we merge any new settings on top of
 152             // the older override.
 153             foreach ($keys as $key) {
 154                 if (is_null($fromform->{$key})) {
 155                     $fromform->{$key} = $oldoverride->{$key};
 156                 }
 157             }
 158             // Set the course module id before calling quiz_delete_override().
 159             $quiz->cmid = $cm->id;
 160             quiz_delete_override($quiz, $oldoverride->id);
 161         }
 162     }
 163
 164     // Set the common parameters for one of the events we may be triggering.
 165     $params = array(
 166         'context' => $context,
 167         'other' => array(
 168             'quizid' => $quiz->id
 169         )
 170     );
 171     if (!empty($override->id)) {
 172         $fromform->id = $override->id;
 173         $DB->update_record('quiz_overrides', $fromform);
 174
 175         // Determine which override updated event to fire.
 176         $params['objectid'] = $override->id;
 177         if (!$groupmode) {
 178             $params['relateduserid'] = $fromform->userid;
 179             $event = \mod_quiz\event\user_override_updated::create($params);
 180         } else {
 181             $params['other']['groupid'] = $fromform->groupid;
 182             $event = \mod_quiz\event\group_override_updated::create($params);
 183         }
 184
 185         // Trigger the override updated event.
 186         $event->trigger();
 187     } else {
 188         unset($fromform->id);
 189         $fromform->id = $DB->insert_record('quiz_overrides', $fromform);
 190
 191         // Determine which override created event to fire.
 192         $params['objectid'] = $fromform->id;
 193         if (!$groupmode) {
 194             $params['relateduserid'] = $fromform->userid;
 195             $event = \mod_quiz\event\user_override_created::create($params);
 196         } else {
 197             $params['other']['groupid'] = $fromform->groupid;
 198             $event = \mod_quiz\event\group_override_created::create($params);
 199         }
 200
 201         // Trigger the override created event.
 202         $event->trigger();
 203     }
 204
 205     quiz_update_open_attempts(array('quizid'=>$quiz->id));
 206     quiz_update_events($quiz, $fromform);
 207
 208     if (!empty($fromform->submitbutton)) {
 209         redirect($overridelisturl);
 210     }
 211
 212     // The user pressed the 'again' button, so redirect back to this page.
 213     $url->remove_params('cmid');
 214     $url->param('action', 'duplicate');
 215     $url->param('id', $fromform->id);
 216     redirect($url);
 217
 218 }
 219
 220 // Print the form.
 221 $pagetitle = get_string('editoverride', 'quiz');
 222 $PAGE->navbar->add($pagetitle);
 223 $PAGE->set_pagelayout('admin');
 224 $PAGE->set_title($pagetitle);
 225 $PAGE->set_heading($course->fullname);
 226 echo $OUTPUT->header();
 227 echo $OUTPUT->heading(format_string($quiz->name, true, array('context' => $context)));
 228
 229 $mform->display();
 230
 231 echo $OUTPUT->footer();