weekly release 3.3dev
[moodle.git] / mod / assign / overrideedit.php
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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 assign overrides
19 *
20 * @package mod_assign
21 * @copyright 2016 Ilya Tregubov
22 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
23 */
24
25
26require_once(dirname(__FILE__) . '/../../config.php');
27require_once($CFG->dirroot.'/mod/assign/lib.php');
28require_once($CFG->dirroot.'/mod/assign/locallib.php');
29require_once($CFG->dirroot.'/mod/assign/override_form.php');
30
31
32$cmid = optional_param('cmid', 0, PARAM_INT);
33$overrideid = optional_param('id', 0, PARAM_INT);
34$action = optional_param('action', null, PARAM_ALPHA);
35$reset = optional_param('reset', false, PARAM_BOOL);
36
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37$pagetitle = get_string('editoverride', 'assign');
38
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39$override = null;
40if ($overrideid) {
41
42 if (! $override = $DB->get_record('assign_overrides', array('id' => $overrideid))) {
43 print_error('invalidoverrideid', 'assign');
44 }
45
46 $assign = new assign($DB->get_record('assign', array('id' => $override->assignid), '*', MUST_EXIST), null, null);
47
48 list($course, $cm) = get_course_and_cm_from_instance($assign->get_context(), 'assign');
49
50} else if ($cmid) {
51 list($course, $cm) = get_course_and_cm_from_cmid($cmid, 'assign');
52 $assign = new assign($DB->get_record('assign', array('id' => $cm->instance), '*', MUST_EXIST), null, null);
53
54} else {
55 print_error('invalidcoursemodule');
56}
57$course = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
58
59$url = new moodle_url('/mod/assign/overrideedit.php');
60if ($action) {
61 $url->param('action', $action);
62}
63if ($overrideid) {
64 $url->param('id', $overrideid);
65} else {
66 $url->param('cmid', $cmid);
67}
68
69$PAGE->set_url($url);
70
71require_login($course, false, $cm);
72
73$context = context_module::instance($cm->id);
74
75// Add or edit an override.
76require_capability('mod/assign:manageoverrides', $context);
77
78if ($overrideid) {
79 // Editing an override.
80 $data = clone $override;
81} else {
82 // Creating a new override.
83 $data = new stdClass();
84}
85
86// Merge assign defaults with data.
87$keys = array('duedate', 'cutoffdate', 'allowsubmissionsfromdate');
88foreach ($keys as $key) {
89 if (!isset($data->{$key}) || $reset) {
90 $data->{$key} = $assign->get_context()->{$key};
91 }
92}
93
94// True if group-based override.
95$groupmode = !empty($data->groupid) || ($action === 'addgroup' && empty($overrideid));
96
97// If we are duplicating an override, then clear the user/group and override id
98// since they will change.
99if ($action === 'duplicate') {
100 $override->id = $data->id = null;
101 $override->userid = $data->userid = null;
102 $override->groupid = $data->groupid = null;
eeaefbb8 103 $pagetitle = get_string('duplicateoverride', 'assign');
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104}
105
106$overridelisturl = new moodle_url('/mod/assign/overrides.php', array('cmid' => $cm->id));
107if (!$groupmode) {
108 $overridelisturl->param('mode', 'user');
109}
110
111// Setup the form.
112$mform = new assign_override_form($url, $cm, $assign, $context, $groupmode, $override);
113$mform->set_data($data);
114
115if ($mform->is_cancelled()) {
116 redirect($overridelisturl);
117
118} else if (optional_param('resetbutton', 0, PARAM_ALPHA)) {
119 $url->param('reset', true);
120 redirect($url);
121
122} else if ($fromform = $mform->get_data()) {
123 // Process the data.
124 $fromform->assignid = $assign->get_context()->id;
125
126 // Replace unchanged values with null.
127 foreach ($keys as $key) {
128 if (($fromform->{$key} == $assign->get_context()->{$key})) {
129 $fromform->{$key} = null;
130 }
131 }
132
133 // See if we are replacing an existing override.
134 $userorgroupchanged = false;
135 if (empty($override->id)) {
136 $userorgroupchanged = true;
137 } else if (!empty($fromform->userid)) {
138 $userorgroupchanged = $fromform->userid !== $override->userid;
139 } else {
140 $userorgroupchanged = $fromform->groupid !== $override->groupid;
141 }
142
143 if ($userorgroupchanged) {
144 $conditions = array(
145 'assignid' => $assign->get_context()->id,
146 'userid' => empty($fromform->userid) ? null : $fromform->userid,
147 'groupid' => empty($fromform->groupid) ? null : $fromform->groupid);
148 if ($oldoverride = $DB->get_record('assign_overrides', $conditions)) {
149 // There is an old override, so we merge any new settings on top of
150 // the older override.
151 foreach ($keys as $key) {
152 if (is_null($fromform->{$key})) {
153 $fromform->{$key} = $oldoverride->{$key};
154 }
155 }
156
157 $assign->delete_override($oldoverride->id);
158 }
159 }
160
161 // Set the common parameters for one of the events we may be triggering.
162 $params = array(
163 'context' => $context,
164 'other' => array(
165 'assignid' => $assign->get_context()->id
166 )
167 );
168 if (!empty($override->id)) {
169 $fromform->id = $override->id;
170 $DB->update_record('assign_overrides', $fromform);
171
172 // Determine which override updated event to fire.
173 $params['objectid'] = $override->id;
174 if (!$groupmode) {
175 $params['relateduserid'] = $fromform->userid;
176 $event = \mod_assign\event\user_override_updated::create($params);
177 } else {
178 $params['other']['groupid'] = $fromform->groupid;
179 $event = \mod_assign\event\group_override_updated::create($params);
180 }
181
182 // Trigger the override updated event.
183 $event->trigger();
184 } else {
185 unset($fromform->id);
186 $fromform->id = $DB->insert_record('assign_overrides', $fromform);
187 if ($groupmode) {
188 $fromform->sortorder = $fromform->id;
189
190 $overridecountgroup = $DB->count_records('assign_overrides',
191 array('userid' => null, 'assignid' => $assign->get_context()->id));
192 $overridecountall = $DB->count_records('assign_overrides', array('assignid' => $assign->get_context()->id));
193 if ((!$overridecountgroup) && ($overridecountall)) { // No group overrides and there are user overrides.
194 $fromform->sortorder = 1;
195 } else {
196 $fromform->sortorder = $overridecountgroup;
197
198 }
199
200 $DB->update_record('assign_overrides', $fromform);
201
202 }
203
204 // Determine which override created event to fire.
205 $params['objectid'] = $fromform->id;
206 if (!$groupmode) {
207 $params['relateduserid'] = $fromform->userid;
208 $event = \mod_assign\event\user_override_created::create($params);
209 } else {
210 $params['other']['groupid'] = $fromform->groupid;
211 $event = \mod_assign\event\group_override_created::create($params);
212 }
213
214 // Trigger the override created event.
215 $event->trigger();
216 }
217
218 assign_update_events($assign, $fromform);
219
220 if (!empty($fromform->submitbutton)) {
221 redirect($overridelisturl);
222 }
223
224 // The user pressed the 'again' button, so redirect back to this page.
225 $url->remove_params('cmid');
226 $url->param('action', 'duplicate');
227 $url->param('id', $fromform->id);
228 redirect($url);
229
230}
231
232// Print the form.
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233$PAGE->navbar->add($pagetitle);
234$PAGE->set_pagelayout('admin');
235$PAGE->set_title($pagetitle);
236$PAGE->set_heading($course->fullname);
237echo $OUTPUT->header();
238echo $OUTPUT->heading(format_string($assign->get_context()->name, true, array('context' => $context)));
239
240$mform->display();
241
242echo $OUTPUT->footer();