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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* This page handles listing of quiz overrides
*
* @package mod_quiz
* @copyright 2010 Matt Petro
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
require_once(__DIR__ . '/../../config.php');
require_once($CFG->dirroot.'/mod/quiz/lib.php');
require_once($CFG->dirroot.'/mod/quiz/locallib.php');
require_once($CFG->dirroot.'/mod/quiz/override_form.php');
$cmid = required_param('cmid', PARAM_INT);
$mode = optional_param('mode', '', PARAM_ALPHA); // One of 'user' or 'group', default is 'group'.
list($course, $cm) = get_course_and_cm_from_cmid($cmid, 'quiz');
$quiz = $DB->get_record('quiz', array('id' => $cm->instance), '*', MUST_EXIST);
require_login($course, false, $cm);
$context = context_module::instance($cm->id);
// Check the user has the required capabilities to list overrides.
require_capability('mod/quiz:manageoverrides', $context);
$quizgroupmode = groups_get_activity_groupmode($cm);
$accessallgroups = ($quizgroupmode == NOGROUPS) || has_capability('moodle/site:accessallgroups', $context);
// Get the course groups that the current user can access.
$groups = $accessallgroups ? groups_get_all_groups($cm->course) : groups_get_activity_allowed_groups($cm);
// Default mode is "group", unless there are no groups.
if ($mode != "user" and $mode != "group") {
if (!empty($groups)) {
$mode = "group";
} else {
$mode = "user";
}
}
$groupmode = ($mode == "group");
$url = new moodle_url('/mod/quiz/overrides.php', array('cmid'=>$cm->id, 'mode'=>$mode));
$PAGE->set_url($url);
// Display a list of overrides.
$PAGE->set_pagelayout('admin');
$PAGE->set_title(get_string('overrides', 'quiz'));
$PAGE->set_heading($course->fullname);
echo $OUTPUT->header();
echo $OUTPUT->heading(format_string($quiz->name, true, array('context' => $context)));
// Delete orphaned group overrides.
$sql = 'SELECT o.id
FROM {quiz_overrides} o
LEFT JOIN {groups} g ON o.groupid = g.id
WHERE o.groupid IS NOT NULL
AND g.id IS NULL
AND o.quiz = ?';
$params = array($quiz->id);
$orphaned = $DB->get_records_sql($sql, $params);
if (!empty($orphaned)) {
$DB->delete_records_list('quiz_overrides', 'id', array_keys($orphaned));
}
$overrides = [];
// Fetch all overrides.
if ($groupmode) {
$colname = get_string('group');
// To filter the result by the list of groups that the current user has access to.
if ($groups) {
$params = ['quizid' => $quiz->id];
list($insql, $inparams) = $DB->get_in_or_equal(array_keys($groups), SQL_PARAMS_NAMED);
$params += $inparams;
$sql = "SELECT o.*, g.name
FROM {quiz_overrides} o
JOIN {groups} g ON o.groupid = g.id
WHERE o.quiz = :quizid AND g.id $insql
ORDER BY g.name";
$overrides = $DB->get_records_sql($sql, $params);
}
} else {
$colname = get_string('user');
list($sort, $params) = users_order_by_sql('u');
$params['quizid'] = $quiz->id;
if ($accessallgroups) {
$sql = 'SELECT o.*, ' . get_all_user_name_fields(true, 'u') . '
FROM {quiz_overrides} o
JOIN {user} u ON o.userid = u.id
WHERE o.quiz = :quizid
ORDER BY ' . $sort;
$overrides = $DB->get_records_sql($sql, $params);
} else if ($groups) {
list($insql, $inparams) = $DB->get_in_or_equal(array_keys($groups), SQL_PARAMS_NAMED);
$params += $inparams;
$sql = 'SELECT o.*, ' . get_all_user_name_fields(true, 'u') . '
FROM {quiz_overrides} o
JOIN {user} u ON o.userid = u.id
JOIN {groups_members} gm ON u.id = gm.userid
WHERE o.quiz = :quizid AND gm.groupid ' . $insql . '
ORDER BY ' . $sort;
$overrides = $DB->get_records_sql($sql, $params);
}
}
// Initialise table.
$table = new html_table();
$table->headspan = array(1, 2, 1);
$table->colclasses = array('colname', 'colsetting', 'colvalue', 'colaction');
$table->head = array(
$colname,
get_string('overrides', 'quiz'),
get_string('action'),
);
$userurl = new moodle_url('/user/view.php', array());
$groupurl = new moodle_url('/group/overview.php', array('id' => $cm->course));
$overridedeleteurl = new moodle_url('/mod/quiz/overridedelete.php');
$overrideediturl = new moodle_url('/mod/quiz/overrideedit.php');
$hasinactive = false; // Whether there are any inactive overrides.
foreach ($overrides as $override) {
$fields = array();
$values = array();
$active = true;
// Check for inactive overrides.
if (!$groupmode) {
if (!has_capability('mod/quiz:attempt', $context, $override->userid)) {
// User not allowed to take the quiz.
$active = false;
} else if (!\core_availability\info_module::is_user_visible($cm, $override->userid)) {
// User cannot access the module.
$active = false;
}
}
// Format timeopen.
if (isset($override->timeopen)) {
$fields[] = get_string('quizopens', 'quiz');
$values[] = $override->timeopen > 0 ?
userdate($override->timeopen) : get_string('noopen', 'quiz');
}
// Format timeclose.
if (isset($override->timeclose)) {
$fields[] = get_string('quizcloses', 'quiz');
$values[] = $override->timeclose > 0 ?
userdate($override->timeclose) : get_string('noclose', 'quiz');
}
// Format timelimit.
if (isset($override->timelimit)) {
$fields[] = get_string('timelimit', 'quiz');
$values[] = $override->timelimit > 0 ?
format_time($override->timelimit) : get_string('none', 'quiz');
}
// Format number of attempts.
if (isset($override->attempts)) {
$fields[] = get_string('attempts', 'quiz');
$values[] = $override->attempts > 0 ?
$override->attempts : get_string('unlimited');
}
// Format password.
if (isset($override->password)) {
$fields[] = get_string('requirepassword', 'quiz');
$values[] = $override->password !== '' ?
get_string('enabled', 'quiz') : get_string('none', 'quiz');
}
// Icons.
$iconstr = '';
// Edit.
$editurlstr = $overrideediturl->out(true, array('id' => $override->id));
$iconstr = '<a title="' . get_string('edit') . '" href="'. $editurlstr . '">' .
$OUTPUT->pix_icon('t/edit', get_string('edit')) . '</a> ';
// Duplicate.
$copyurlstr = $overrideediturl->out(true,
array('id' => $override->id, 'action' => 'duplicate'));
$iconstr .= '<a title="' . get_string('copy') . '" href="' . $copyurlstr . '">' .
$OUTPUT->pix_icon('t/copy', get_string('copy')) . '</a> ';
// Delete.
$deleteurlstr = $overridedeleteurl->out(true,
array('id' => $override->id, 'sesskey' => sesskey()));
$iconstr .= '<a title="' . get_string('delete') . '" href="' . $deleteurlstr . '">' .
$OUTPUT->pix_icon('t/delete', get_string('delete')) . '</a> ';
if ($groupmode) {
$usergroupstr = '<a href="' . $groupurl->out(true,
array('group' => $override->groupid)) . '" >' . $override->name . '</a>';
} else {
$usergroupstr = '<a href="' . $userurl->out(true,
array('id' => $override->userid)) . '" >' . fullname($override) . '</a>';
}
$class = '';
if (!$active) {
$class = "dimmed_text";
$usergroupstr .= '*';
$hasinactive = true;
}
$usergroupcell = new html_table_cell();
$usergroupcell->rowspan = count($fields);
$usergroupcell->text = $usergroupstr;
$actioncell = new html_table_cell();
$actioncell->rowspan = count($fields);
$actioncell->text = $iconstr;
for ($i = 0; $i < count($fields); ++$i) {
$row = new html_table_row();
$row->attributes['class'] = $class;
if ($i == 0) {
$row->cells[] = $usergroupcell;
}
$cell1 = new html_table_cell();
$cell1->text = $fields[$i];
$row->cells[] = $cell1;
$cell2 = new html_table_cell();
$cell2->text = $values[$i];
$row->cells[] = $cell2;
if ($i == 0) {
$row->cells[] = $actioncell;
}
$table->data[] = $row;
}
}
// Output the table and button.
echo html_writer::start_tag('div', array('id' => 'quizoverrides'));
if (count($table->data)) {
echo html_writer::table($table);
}
if ($hasinactive) {
echo $OUTPUT->notification(get_string('inactiveoverridehelp', 'quiz'), 'dimmed_text');
}
echo html_writer::start_tag('div', array('class' => 'buttons'));
$options = array();
if ($groupmode) {
if (empty($groups)) {
// There are no groups.
echo $OUTPUT->notification(get_string('groupsnone', 'quiz'), 'error');
$options['disabled'] = true;
}
echo $OUTPUT->single_button($overrideediturl->out(true,
array('action' => 'addgroup', 'cmid' => $cm->id)),
get_string('addnewgroupoverride', 'quiz'), 'post', $options);
} else {
$users = array();
// See if there are any students in the quiz.
if ($accessallgroups) {
$users = get_users_by_capability($context, 'mod/quiz:attempt', 'u.id');
$nousermessage = get_string('usersnone', 'quiz');
} else if ($groups) {
$users = get_users_by_capability($context, 'mod/quiz:attempt', 'u.id', '', '', '', array_keys($groups));
$nousermessage = get_string('usersnone', 'quiz');
} else {
$nousermessage = get_string('groupsnone', 'quiz');
}
$info = new \core_availability\info_module($cm);
$users = $info->filter_user_list($users);
if (empty($users)) {
// There are no students.
echo $OUTPUT->notification($nousermessage, 'error');
$options['disabled'] = true;
}
echo $OUTPUT->single_button($overrideediturl->out(true,
array('action' => 'adduser', 'cmid' => $cm->id)),
get_string('addnewuseroverride', 'quiz'), 'get', $options);
}
echo html_writer::end_tag('div');
echo html_writer::end_tag('div');
// Finish the page.
echo $OUTPUT->footer();