mod/quiz/overrides.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 listing 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 = required_param('cmid', PARAM_INT);
  33 $mode = optional_param('mode', '', PARAM_ALPHA); // One of 'user' or 'group', default is 'group'.
  34
  35 list($course, $cm) = get_course_and_cm_from_cmid($cmid, 'quiz');
  36 $quiz = $DB->get_record('quiz', array('id' => $cm->instance), '*', MUST_EXIST);
  37
  38 // Get the course groups.
  39 $groups = groups_get_all_groups($cm->course);
  40 if ($groups === false) {
  41     $groups = array();
  42 }
  43
  44 // Default mode is "group", unless there are no groups.
  45 if ($mode != "user" and $mode != "group") {
  46     if (!empty($groups)) {
  47         $mode = "group";
  48     } else {
  49         $mode = "user";
  50     }
  51 }
  52 $groupmode = ($mode == "group");
  53
  54 $url = new moodle_url('/mod/quiz/overrides.php', array('cmid'=>$cm->id, 'mode'=>$mode));
  55
  56 $PAGE->set_url($url);
  57
  58 require_login($course, false, $cm);
  59
  60 $context = context_module::instance($cm->id);
  61
  62 // Check the user has the required capabilities to list overrides.
  63 require_capability('mod/quiz:manageoverrides', $context);
  64
  65 // Display a list of overrides.
  66 $PAGE->set_pagelayout('admin');
  67 $PAGE->set_title(get_string('overrides', 'quiz'));
  68 $PAGE->set_heading($course->fullname);
  69 echo $OUTPUT->header();
  70 echo $OUTPUT->heading(format_string($quiz->name, true, array('context' => $context)));
  71
  72 // Delete orphaned group overrides.
  73 $sql = 'SELECT o.id
  74             FROM {quiz_overrides} o LEFT JOIN {groups} g
  75             ON o.groupid = g.id
  76             WHERE o.groupid IS NOT NULL
  77               AND g.id IS NULL
  78               AND o.quiz = ?';
  79 $params = array($quiz->id);
  80 $orphaned = $DB->get_records_sql($sql, $params);
  81 if (!empty($orphaned)) {
  82     $DB->delete_records_list('quiz_overrides', 'id', array_keys($orphaned));
  83 }
  84
  85 // Fetch all overrides.
  86 if ($groupmode) {
  87     $colname = get_string('group');
  88     $sql = 'SELECT o.*, g.name
  89                 FROM {quiz_overrides} o
  90                 JOIN {groups} g ON o.groupid = g.id
  91                 WHERE o.quiz = :quizid
  92                 ORDER BY g.name';
  93     $params = array('quizid' => $quiz->id);
  94 } else {
  95     $colname = get_string('user');
  96     list($sort, $params) = users_order_by_sql('u');
  97     $sql = 'SELECT o.*, ' . get_all_user_name_fields(true, 'u') . '
  98             FROM {quiz_overrides} o
  99             JOIN {user} u ON o.userid = u.id
 100             WHERE o.quiz = :quizid
 101             ORDER BY ' . $sort;
 102     $params['quizid'] = $quiz->id;
 103 }
 104
 105 $overrides = $DB->get_records_sql($sql, $params);
 106
 107 // Initialise table.
 108 $table = new html_table();
 109 $table->headspan = array(1, 2, 1);
 110 $table->colclasses = array('colname', 'colsetting', 'colvalue', 'colaction');
 111 $table->head = array(
 112         $colname,
 113         get_string('overrides', 'quiz'),
 114         get_string('action'),
 115 );
 116
 117 $userurl = new moodle_url('/user/view.php', array());
 118 $groupurl = new moodle_url('/group/overview.php', array('id' => $cm->course));
 119
 120 $overridedeleteurl = new moodle_url('/mod/quiz/overridedelete.php');
 121 $overrideediturl = new moodle_url('/mod/quiz/overrideedit.php');
 122
 123 $hasinactive = false; // Whether there are any inactive overrides.
 124
 125 foreach ($overrides as $override) {
 126
 127     $fields = array();
 128     $values = array();
 129     $active = true;
 130
 131     // Check for inactive overrides.
 132     if (!$groupmode) {
 133         if (!has_capability('mod/quiz:attempt', $context, $override->userid)) {
 134             // User not allowed to take the quiz.
 135             $active = false;
 136         } else if (!\core_availability\info_module::is_user_visible($cm, $override->userid)) {
 137             // User cannot access the module.
 138             $active = false;
 139         }
 140     }
 141
 142     // Format timeopen.
 143     if (isset($override->timeopen)) {
 144         $fields[] = get_string('quizopens', 'quiz');
 145         $values[] = $override->timeopen > 0 ?
 146                 userdate($override->timeopen) : get_string('noopen', 'quiz');
 147     }
 148
 149     // Format timeclose.
 150     if (isset($override->timeclose)) {
 151         $fields[] = get_string('quizcloses', 'quiz');
 152         $values[] = $override->timeclose > 0 ?
 153                 userdate($override->timeclose) : get_string('noclose', 'quiz');
 154     }
 155
 156     // Format timelimit.
 157     if (isset($override->timelimit)) {
 158         $fields[] = get_string('timelimit', 'quiz');
 159         $values[] = $override->timelimit > 0 ?
 160                 format_time($override->timelimit) : get_string('none', 'quiz');
 161     }
 162
 163     // Format number of attempts.
 164     if (isset($override->attempts)) {
 165         $fields[] = get_string('attempts', 'quiz');
 166         $values[] = $override->attempts > 0 ?
 167                 $override->attempts : get_string('unlimited');
 168     }
 169
 170     // Format password.
 171     if (isset($override->password)) {
 172         $fields[] = get_string('requirepassword', 'quiz');
 173         $values[] = $override->password !== '' ?
 174                 get_string('enabled', 'quiz') : get_string('none', 'quiz');
 175     }
 176
 177     // Icons.
 178     $iconstr = '';
 179
 180     if ($active) {
 181         // Edit.
 182         $editurlstr = $overrideediturl->out(true, array('id' => $override->id));
 183         $iconstr = '<a title="' . get_string('edit') . '" href="'. $editurlstr . '">' .
 184                 '<img src="' . $OUTPUT->pix_url('t/edit') . '" class="iconsmall" alt="' .
 185                 get_string('edit') . '" /></a> ';
 186         // Duplicate.
 187         $copyurlstr = $overrideediturl->out(true,
 188                 array('id' => $override->id, 'action' => 'duplicate'));
 189         $iconstr .= '<a title="' . get_string('copy') . '" href="' . $copyurlstr . '">' .
 190                 '<img src="' . $OUTPUT->pix_url('t/copy') . '" class="iconsmall" alt="' .
 191                 get_string('copy') . '" /></a> ';
 192     }
 193     // Delete.
 194     $deleteurlstr = $overridedeleteurl->out(true,
 195             array('id' => $override->id, 'sesskey' => sesskey()));
 196     $iconstr .= '<a title="' . get_string('delete') . '" href="' . $deleteurlstr . '">' .
 197             '<img src="' . $OUTPUT->pix_url('t/delete') . '" class="iconsmall" alt="' .
 198             get_string('delete') . '" /></a> ';
 199
 200     if ($groupmode) {
 201         $usergroupstr = '<a href="' . $groupurl->out(true,
 202                 array('group' => $override->groupid)) . '" >' . $override->name . '</a>';
 203     } else {
 204         $usergroupstr = '<a href="' . $userurl->out(true,
 205                 array('id' => $override->userid)) . '" >' . fullname($override) . '</a>';
 206     }
 207
 208     $class = '';
 209     if (!$active) {
 210         $class = "dimmed_text";
 211         $usergroupstr .= '*';
 212         $hasinactive = true;
 213     }
 214
 215     $usergroupcell = new html_table_cell();
 216     $usergroupcell->rowspan = count($fields);
 217     $usergroupcell->text = $usergroupstr;
 218     $actioncell = new html_table_cell();
 219     $actioncell->rowspan = count($fields);
 220     $actioncell->text = $iconstr;
 221
 222     for ($i = 0; $i < count($fields); ++$i) {
 223         $row = new html_table_row();
 224         $row->attributes['class'] = $class;
 225         if ($i == 0) {
 226             $row->cells[] = $usergroupcell;
 227         }
 228         $cell1 = new html_table_cell();
 229         $cell1->text = $fields[$i];
 230         $row->cells[] = $cell1;
 231         $cell2 = new html_table_cell();
 232         $cell2->text = $values[$i];
 233         $row->cells[] = $cell2;
 234         if ($i == 0) {
 235             $row->cells[] = $actioncell;
 236         }
 237         $table->data[] = $row;
 238     }
 239 }
 240
 241 // Output the table and button.
 242 echo html_writer::start_tag('div', array('id' => 'quizoverrides'));
 243 if (count($table->data)) {
 244     echo html_writer::table($table);
 245 }
 246 if ($hasinactive) {
 247     echo $OUTPUT->notification(get_string('inactiveoverridehelp', 'quiz'), 'dimmed_text');
 248 }
 249
 250 echo html_writer::start_tag('div', array('class' => 'buttons'));
 251 $options = array();
 252 if ($groupmode) {
 253     if (empty($groups)) {
 254         // There are no groups.
 255         echo $OUTPUT->notification(get_string('groupsnone', 'quiz'), 'error');
 256         $options['disabled'] = true;
 257     }
 258     echo $OUTPUT->single_button($overrideediturl->out(true,
 259             array('action' => 'addgroup', 'cmid' => $cm->id)),
 260             get_string('addnewgroupoverride', 'quiz'), 'post', $options);
 261 } else {
 262     $users = array();
 263     // See if there are any students in the quiz.
 264     $users = get_users_by_capability($context, 'mod/quiz:attempt', 'u.id');
 265     $info = new \core_availability\info_module($cm);
 266     $users = $info->filter_user_list($users);
 267
 268     if (empty($users)) {
 269         // There are no students.
 270         echo $OUTPUT->notification(get_string('usersnone', 'quiz'), 'error');
 271         $options['disabled'] = true;
 272     }
 273     echo $OUTPUT->single_button($overrideediturl->out(true,
 274             array('action' => 'adduser', 'cmid' => $cm->id)),
 275             get_string('addnewuseroverride', 'quiz'), 'get', $options);
 276 }
 277 echo html_writer::end_tag('div');
 278 echo html_writer::end_tag('div');
 279
 280 // Finish the page.
 281 echo $OUTPUT->footer();