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