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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', ['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.
$canedit = has_capability('mod/quiz:manageoverrides', $context);
if (!$canedit) {
require_capability('mod/quiz:viewoverrides', $context);
}
$quizgroupmode = groups_get_activity_groupmode($cm);
$showallgroups = ($quizgroupmode == NOGROUPS) || has_capability('moodle/site:accessallgroups', $context);
// Get the course groups that the current user can access.
$groups = $showallgroups ? groups_get_all_groups($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', ['cmid' => $cm->id, 'mode' => $mode]);
$title = get_string('overridesforquiz', 'quiz',
format_string($quiz->name, true, ['context' => $context]));
$PAGE->set_url($url);
$PAGE->set_pagelayout('admin');
$PAGE->add_body_class('limitedwidth');
$PAGE->set_title($title);
$PAGE->set_heading($course->fullname);
$PAGE->activityheader->disable();
// Activate the secondary nav tab.
$PAGE->set_secondary_active_tab("mod_quiz_useroverrides");
// 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 = ?';
$params = [$quiz->id];
$orphaned = $DB->get_records_sql($sql, $params);
if (!empty($orphaned)) {
$DB->delete_records_list('quiz_overrides', 'id', array_keys($orphaned));
}
$overrides = [];
$colclasses = [];
$headers = [];
// Fetch all overrides.
if ($groupmode) {
$headers[] = get_string('group');
// To filter the result by the list of groups that the current user has access to.
if ($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 {
// User overrides.
$colclasses[] = 'colname';
$headers[] = get_string('user');
$userfieldsapi = \core_user\fields::for_identity($context)->with_name()->with_userpic();
$extrauserfields = $userfieldsapi->get_required_fields([\core_user\fields::PURPOSE_IDENTITY]);
$userfieldssql = $userfieldsapi->get_sql('u', true, '', 'userid', false);
foreach ($extrauserfields as $field) {
$colclasses[] = 'col' . $field;
$headers[] = \core_user\fields::get_display_name($field);
}
list($sort, $params) = users_order_by_sql('u', null, $context, $extrauserfields);
$params['quizid'] = $quiz->id;
if ($showallgroups) {
$groupsjoin = '';
$groupswhere = '';
} else if ($groups) {
list($insql, $inparams) = $DB->get_in_or_equal(array_keys($groups), SQL_PARAMS_NAMED);
$groupsjoin = 'JOIN {groups_members} gm ON u.id = gm.userid';
$groupswhere = ' AND gm.groupid ' . $insql;
$params += $inparams;
} else {
// User cannot see any data.
$groupsjoin = '';
$groupswhere = ' AND 1 = 2';
}
$overrides = $DB->get_records_sql("
SELECT o.*, {$userfieldssql->selects}
FROM {quiz_overrides} o
JOIN {user} u ON o.userid = u.id
{$userfieldssql->joins}
$groupsjoin
WHERE o.quiz = :quizid
$groupswhere
ORDER BY $sort
", array_merge($params, $userfieldssql->params));
}
// Initialise table.
$table = new html_table();
$table->head = $headers;
$table->colclasses = $colclasses;
$table->headspan = array_fill(0, count($headers), 1);
$table->head[] = get_string('overrides', 'quiz');
$table->colclasses[] = 'colsetting';
$table->colclasses[] = 'colvalue';
$table->headspan[] = 2;
if ($canedit) {
$table->head[] = get_string('action');
$table->colclasses[] = 'colaction';
$table->headspan[] = 1;
}
$userurl = new moodle_url('/user/view.php', []);
$groupurl = new moodle_url('/group/overview.php', ['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) {
// Check if this override is active.
$active = true;
if (!$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.
$active = false;
}
}
if (!$active) {
$hasinactive = true;
}
// Prepare the information about which settings are overridden.
$fields = [];
$values = [];
// Format timeopen.
if (isset($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');
}
// Prepare the information about who this override applies to.
$extranamebit = $active ? '' : '*';
$usercells = [];
if ($groupmode) {
$groupcell = new html_table_cell();
$groupcell->rowspan = count($fields);
$groupcell->text = html_writer::link(new moodle_url($groupurl, ['group' => $override->groupid]),
$override->name . $extranamebit);
$usercells[] = $groupcell;
} else {
$usercell = new html_table_cell();
$usercell->rowspan = count($fields);
$usercell->text = html_writer::link(new moodle_url($userurl, ['id' => $override->userid]),
fullname($override) . $extranamebit);
$usercells[] = $usercell;
foreach ($extrauserfields as $field) {
$usercell = new html_table_cell();
$usercell->rowspan = count($fields);
$usercell->text = s($override->$field);
$usercells[] = $usercell;
}
}
// Prepare the actions.
if ($canedit) {
// Icons.
$iconstr = '';
// Edit.
$editurlstr = $overrideediturl->out(true, ['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,
['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,
['id' => $override->id, 'sesskey' => sesskey()]);
$iconstr .= '<a title="' . get_string('delete') . '" href="' . $deleteurlstr . '">' .
$OUTPUT->pix_icon('t/delete', get_string('delete')) . '</a> ';
$actioncell = new html_table_cell();
$actioncell->rowspan = count($fields);
$actioncell->text = $iconstr;
}
// Add the data to the table.
for ($i = 0; $i < count($fields); ++$i) {
$row = new html_table_row();
if (!$active) {
$row->attributes['class'] = 'dimmed_text';
}
if ($i == 0) {
$row->cells = $usercells;
}
$labelcell = new html_table_cell();
$labelcell->text = $fields[$i];
$row->cells[] = $labelcell;
$valuecell = new html_table_cell();
$valuecell->text = $values[$i];
$row->cells[] = $valuecell;
if ($canedit && $i == 0) {
$row->cells[] = $actioncell;
}
$table->data[] = $row;
}
}
// Work out what else needs to be displayed.
$addenabled = true;
$warningmessage = '';
if ($canedit) {
if ($groupmode) {
if (empty($groups)) {
// There are no groups.
$warningmessage = get_string('groupsnone', 'quiz');
$addenabled = false;
}
} else {
// See if there are any students in the quiz.
if ($showallgroups) {
$users = get_users_by_capability($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 {
$users = [];
$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.
$warningmessage = $nousermessage;
$addenabled = false;
}
}
}
// Tertiary navigation.
echo $OUTPUT->header();
$renderer = $PAGE->get_renderer('mod_quiz');
$tertiarynav = new \mod_quiz\output\overrides_actions($cmid, $mode, $canedit, $addenabled);
echo $renderer->render($tertiarynav);
if ($mode === 'user') {
echo $OUTPUT->heading(get_string('useroverrides', 'quiz'));
} else {
echo $OUTPUT->heading(get_string('groupoverrides', 'quiz'));
}
// Output the table and button.
echo html_writer::start_tag('div', ['id' => 'quizoverrides']);
if (count($table->data)) {
echo html_writer::table($table);
} else {
if ($groupmode) {
echo $OUTPUT->notification(get_string('overridesnoneforgroups', 'quiz'), 'info', false);
} else {
echo $OUTPUT->notification(get_string('overridesnoneforusers', 'quiz'), 'info', false);
}
}
if ($hasinactive) {
echo $OUTPUT->notification(get_string('inactiveoverridehelp', 'quiz'), 'info', false);
}
if ($warningmessage) {
echo $OUTPUT->notification($warningmessage, 'error');
}
echo html_writer::end_tag('div');
// Finish the page.
echo $OUTPUT->footer();