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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 editing and creation of assign overrides
*
* @package mod_assign
* @copyright 2016 Ilya Tregubov
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
require_once(dirname(__FILE__) . '/../../config.php');
require_once($CFG->dirroot.'/mod/assign/lib.php');
require_once($CFG->dirroot.'/mod/assign/locallib.php');
require_once($CFG->dirroot.'/mod/assign/override_form.php');
$cmid = optional_param('cmid', 0, PARAM_INT);
$overrideid = optional_param('id', 0, PARAM_INT);
$action = optional_param('action', null, PARAM_ALPHA);
$reset = optional_param('reset', false, PARAM_BOOL);
$userid = optional_param('userid', null, PARAM_INT);
$userchange = optional_param('userchange', false, PARAM_BOOL);
$pagetitle = get_string('editoverride', 'assign');
$override = null;
if ($overrideid) {
if (! $override = $DB->get_record('assign_overrides', array('id' => $overrideid))) {
print_error('invalidoverrideid', 'assign');
}
list($course, $cm) = get_course_and_cm_from_instance($override->assignid, 'assign');
} else if ($cmid) {
list($course, $cm) = get_course_and_cm_from_cmid($cmid, 'assign');
} else {
print_error('invalidcoursemodule');
}
$url = new moodle_url('/mod/assign/overrideedit.php');
if ($action) {
$url->param('action', $action);
}
if ($overrideid) {
$url->param('id', $overrideid);
} else {
$url->param('cmid', $cmid);
}
$PAGE->set_url($url);
require_login($course, false, $cm);
$context = context_module::instance($cm->id);
$assign = new assign($context, $cm, $course);
$assigninstance = $assign->get_instance($userid);
$shouldadduserid = $userid && !empty($course->relativedatesmode);
$shouldresetform = optional_param('resetbutton', 0, PARAM_ALPHA) || ($userchange && $action !== 'duplicate');
// Add or edit an override.
require_capability('mod/assign:manageoverrides', $context);
if ($overrideid) {
// Editing an override.
$data = clone $override;
if ($override->groupid) {
if (!groups_group_visible($override->groupid, $course, $cm)) {
print_error('invalidoverrideid', 'assign');
}
} else {
if (!groups_user_groups_visible($course, $override->userid, $cm)) {
print_error('invalidoverrideid', 'assign');
}
}
} else {
// Creating a new override.
$data = new stdClass();
}
// Merge assign defaults with data.
$keys = array('duedate', 'cutoffdate', 'allowsubmissionsfromdate');
foreach ($keys as $key) {
if (!isset($data->{$key}) || $reset) {
$data->{$key} = $assigninstance->{$key};
}
}
// True if group-based override.
$groupmode = !empty($data->groupid) || ($action === 'addgroup' && empty($overrideid));
// If we are duplicating an override, then clear the user/group and override id
// since they will change.
if ($action === 'duplicate') {
$override->id = $data->id = null;
$override->userid = $data->userid = null;
$override->groupid = $data->groupid = null;
$pagetitle = get_string('duplicateoverride', 'assign');
}
if ($shouldadduserid) {
$data->userid = $userid;
}
$overridelisturl = new moodle_url('/mod/assign/overrides.php', array('cmid' => $cm->id));
if (!$groupmode) {
$overridelisturl->param('mode', 'user');
}
// Setup the form.
$mform = new assign_override_form($url, $cm, $assign, $context, $groupmode, $override, $userid);
$mform->set_data($data);
if ($mform->is_cancelled()) {
redirect($overridelisturl);
} else if ($shouldresetform) {
$url->param('reset', true);
if ($shouldadduserid) {
$url->param('userid', $userid);
}
redirect($url);
} else if (!$userchange && $fromform = $mform->get_data()) {
// Process the data.
$fromform->assignid = $assigninstance->id;
// Replace unchanged values with null.
foreach ($keys as $key) {
if (($fromform->{$key} == $assigninstance->{$key})) {
$fromform->{$key} = null;
}
}
// See if we are replacing an existing override.
$userorgroupchanged = false;
if (empty($override->id)) {
$userorgroupchanged = true;
} else if (!empty($fromform->userid)) {
$userorgroupchanged = $fromform->userid !== $override->userid;
} else {
$userorgroupchanged = $fromform->groupid !== $override->groupid;
}
if ($userorgroupchanged) {
$conditions = array(
'assignid' => $assigninstance->id,
'userid' => empty($fromform->userid) ? null : $fromform->userid,
'groupid' => empty($fromform->groupid) ? null : $fromform->groupid);
if ($oldoverride = $DB->get_record('assign_overrides', $conditions)) {
// There is an old override, so we merge any new settings on top of
// the older override.
foreach ($keys as $key) {
if (is_null($fromform->{$key})) {
$fromform->{$key} = $oldoverride->{$key};
}
}
$assign->delete_override($oldoverride->id);
}
}
// Set the common parameters for one of the events we may be triggering.
$params = array(
'context' => $context,
'other' => array(
'assignid' => $assigninstance->id
)
);
if (!empty($override->id)) {
$fromform->id = $override->id;
$DB->update_record('assign_overrides', $fromform);
// Determine which override updated event to fire.
$params['objectid'] = $override->id;
if (!$groupmode) {
$params['relateduserid'] = $fromform->userid;
$event = \mod_assign\event\user_override_updated::create($params);
} else {
$params['other']['groupid'] = $fromform->groupid;
$event = \mod_assign\event\group_override_updated::create($params);
}
// Trigger the override updated event.
$event->trigger();
} else {
unset($fromform->id);
$fromform->id = $DB->insert_record('assign_overrides', $fromform);
if ($groupmode) {
$fromform->sortorder = 1;
$overridecountgroup = $DB->count_records('assign_overrides',
array('userid' => null, 'assignid' => $assigninstance->id));
$overridecountall = $DB->count_records('assign_overrides', array('assignid' => $assigninstance->id));
if ((!$overridecountgroup) && ($overridecountall)) { // No group overrides and there are user overrides.
$fromform->sortorder = 1;
} else {
$fromform->sortorder = $overridecountgroup;
}
$DB->update_record('assign_overrides', $fromform);
reorder_group_overrides($assigninstance->id);
}
// Determine which override created event to fire.
$params['objectid'] = $fromform->id;
if (!$groupmode) {
$params['relateduserid'] = $fromform->userid;
$event = \mod_assign\event\user_override_created::create($params);
} else {
$params['other']['groupid'] = $fromform->groupid;
$event = \mod_assign\event\group_override_created::create($params);
}
// Trigger the override created event.
$event->trigger();
}
assign_update_events($assign, $fromform);
if (!empty($fromform->submitbutton)) {
redirect($overridelisturl);
}
// The user pressed the 'again' button, so redirect back to this page.
$url->remove_params('cmid');
$url->param('action', 'duplicate');
$url->param('id', $fromform->id);
redirect($url);
}
// Print the form.
$PAGE->navbar->add($pagetitle);
$PAGE->set_pagelayout('admin');
$PAGE->set_title($pagetitle);
$PAGE->set_heading($course->fullname);
echo $OUTPUT->header();
echo $OUTPUT->heading(format_string($assigninstance->name, true, array('context' => $context)));
$mform->display();
echo $OUTPUT->footer();