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 prints a review of a particular quiz attempt
19 *
20 * It is used either by the student whose attempts this is, after the attempt,
21 * or by a teacher reviewing another's attempt during or afterwards.
22 *
23 * @package   mod_quiz
24 * @copyright 1999 onwards Martin Dougiamas  {@link http://moodle.com}
25 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
26 */
27
28
29require_once(__DIR__ . '/../../config.php');
30require_once($CFG->dirroot . '/mod/quiz/locallib.php');
31require_once($CFG->dirroot . '/mod/quiz/report/reportlib.php');
32
33$attemptid = required_param('attempt', PARAM_INT);
34$page      = optional_param('page', 0, PARAM_INT);
35$showall   = optional_param('showall', null, PARAM_BOOL);
36$cmid      = optional_param('cmid', null, PARAM_INT);
37
38$url = new moodle_url('/mod/quiz/review.php', array('attempt'=>$attemptid));
39if ($page !== 0) {
40    $url->param('page', $page);
41} else if ($showall) {
42    $url->param('showall', $showall);
43}
44$PAGE->set_url($url);
45
46$attemptobj = quiz_create_attempt_handling_errors($attemptid, $cmid);
47$page = $attemptobj->force_page_number_into_range($page);
48
49// Now we can validate the params better, re-genrate the page URL.
50if ($showall === null) {
51    $showall = $page == 0 && $attemptobj->get_default_show_all('review');
52}
53$PAGE->set_url($attemptobj->review_url(null, $page, $showall));
54
55// Check login.
56require_login($attemptobj->get_course(), false, $attemptobj->get_cm());
57$attemptobj->check_review_capability();
58
59// Create an object to manage all the other (non-roles) access rules.
60$accessmanager = $attemptobj->get_access_manager(time());
61$accessmanager->setup_attempt_page($PAGE);
62
63$options = $attemptobj->get_display_options(true);
64
65// Check permissions - warning there is similar code in reviewquestion.php and
66// quiz_attempt::check_file_access. If you change on, change them all.
67if ($attemptobj->is_own_attempt()) {
68    if (!$attemptobj->is_finished()) {
69        redirect($attemptobj->attempt_url(null, $page));
70
71    } else if (!$options->attempt) {
72        $accessmanager->back_to_view_page($PAGE->get_renderer('mod_quiz'),
73                $attemptobj->cannot_review_message());
74    }
75
76} else if (!$attemptobj->is_review_allowed()) {
77    throw new moodle_quiz_exception($attemptobj->get_quizobj(), 'noreviewattempt');
78}
79
80// Load the questions and states needed by this page.
81if ($showall) {
82    $questionids = $attemptobj->get_slots();
83} else {
84    $questionids = $attemptobj->get_slots($page);
85}
86
87// Save the flag states, if they are being changed.
88if ($options->flags == question_display_options::EDITABLE && optional_param('savingflags', false,
89        PARAM_BOOL)) {
90    require_sesskey();
91    $attemptobj->save_question_flags();
92    redirect($attemptobj->review_url(null, $page, $showall));
93}
94
95// Work out appropriate title and whether blocks should be shown.
96if ($attemptobj->is_own_preview()) {
97    navigation_node::override_active_url($attemptobj->start_attempt_url());
98
99} else {
100    if (empty($attemptobj->get_quiz()->showblocks) && !$attemptobj->is_preview_user()) {
101        $PAGE->blocks->show_only_fake_blocks();
102    }
103}
104
105// Set up the page header.
106$headtags = $attemptobj->get_html_head_contributions($page, $showall);
107$PAGE->set_title($attemptobj->review_page_title($page, $showall));
108$PAGE->set_heading($attemptobj->get_course()->fullname);
109
110// Summary table start. ============================================================================
111
112// Work out some time-related things.
113$attempt = $attemptobj->get_attempt();
114$quiz = $attemptobj->get_quiz();
115$overtime = 0;
116
117if ($attempt->state == quiz_attempt::FINISHED) {
118    if ($timetaken = ($attempt->timefinish - $attempt->timestart)) {
119        if ($quiz->timelimit && $timetaken > ($quiz->timelimit + 60)) {
120            $overtime = $timetaken - $quiz->timelimit;
121            $overtime = format_time($overtime);
122        }
123        $timetaken = format_time($timetaken);
124    } else {
125        $timetaken = "-";
126    }
127} else {
128    $timetaken = get_string('unfinished', 'quiz');
129}
130
131// Prepare summary informat about the whole attempt.
132$summarydata = array();
133if (!$attemptobj->get_quiz()->showuserpicture && $attemptobj->get_userid() != $USER->id) {
134    // If showuserpicture is true, the picture is shown elsewhere, so don't repeat it.
135    $student = $DB->get_record('user', array('id' => $attemptobj->get_userid()));
136    $userpicture = new user_picture($student);
137    $userpicture->courseid = $attemptobj->get_courseid();
138    $summarydata['user'] = array(
139        'title'   => $userpicture,
140        'content' => new action_link(new moodle_url('/user/view.php', array(
141                                'id' => $student->id, 'course' => $attemptobj->get_courseid())),
142                          fullname($student, true)),
143    );
144}
145
146if ($attemptobj->has_capability('mod/quiz:viewreports')) {
147    $attemptlist = $attemptobj->links_to_other_attempts($attemptobj->review_url(null, $page,
148            $showall));
149    if ($attemptlist) {
150        $summarydata['attemptlist'] = array(
151            'title'   => get_string('attempts', 'quiz'),
152            'content' => $attemptlist,
153        );
154    }
155}
156
157// Timing information.
158$summarydata['startedon'] = array(
159    'title'   => get_string('startedon', 'quiz'),
160    'content' => userdate($attempt->timestart),
161);
162
163$summarydata['state'] = array(
164    'title'   => get_string('attemptstate', 'quiz'),
165    'content' => quiz_attempt::state_name($attempt->state),
166);
167
168if ($attempt->state == quiz_attempt::FINISHED) {
169    $summarydata['completedon'] = array(
170        'title'   => get_string('completedon', 'quiz'),
171        'content' => userdate($attempt->timefinish),
172    );
173    $summarydata['timetaken'] = array(
174        'title'   => get_string('timetaken', 'quiz'),
175        'content' => $timetaken,
176    );
177}
178
179if (!empty($overtime)) {
180    $summarydata['overdue'] = array(
181        'title'   => get_string('overdue', 'quiz'),
182        'content' => $overtime,
183    );
184}
185
186// Show marks (if the user is allowed to see marks at the moment).
187$grade = quiz_rescale_grade($attempt->sumgrades, $quiz, false);
188if ($options->marks >= question_display_options::MARK_AND_MAX && quiz_has_grades($quiz)) {
189
190    if ($attempt->state != quiz_attempt::FINISHED) {
191        // Cannot display grade.
192
193    } else if (is_null($grade)) {
194        $summarydata['grade'] = array(
195            'title'   => get_string('grade', 'quiz'),
196            'content' => quiz_format_grade($quiz, $grade),
197        );
198
199    } else {
200        // Show raw marks only if they are different from the grade (like on the view page).
201        if ($quiz->grade != $quiz->sumgrades) {
202            $a = new stdClass();
203            $a->grade = quiz_format_grade($quiz, $attempt->sumgrades);
204            $a->maxgrade = quiz_format_grade($quiz, $quiz->sumgrades);
205            $summarydata['marks'] = array(
206                'title'   => get_string('marks', 'quiz'),
207                'content' => get_string('outofshort', 'quiz', $a),
208            );
209        }
210
211        // Now the scaled grade.
212        $a = new stdClass();
213        $a->grade = html_writer::tag('b', quiz_format_grade($quiz, $grade));
214        $a->maxgrade = quiz_format_grade($quiz, $quiz->grade);
215        if ($quiz->grade != 100) {
216            $a->percent = html_writer::tag('b', format_float(
217                    $attempt->sumgrades * 100 / $quiz->sumgrades, 0));
218            $formattedgrade = get_string('outofpercent', 'quiz', $a);
219        } else {
220            $formattedgrade = get_string('outof', 'quiz', $a);
221        }
222        $summarydata['grade'] = array(
223            'title'   => get_string('grade', 'quiz'),
224            'content' => $formattedgrade,
225        );
226    }
227}
228
229// Any additional summary data from the behaviour.
230$summarydata = array_merge($summarydata, $attemptobj->get_additional_summary_data($options));
231
232// Feedback if there is any, and the user is allowed to see it now.
233$feedback = $attemptobj->get_overall_feedback($grade);
234if ($options->overallfeedback && $feedback) {
235    $summarydata['feedback'] = array(
236        'title'   => get_string('feedback', 'quiz'),
237        'content' => $feedback,
238    );
239}
240
241// Summary table end. ==============================================================================
242
243if ($showall) {
244    $slots = $attemptobj->get_slots();
245    $lastpage = true;
246} else {
247    $slots = $attemptobj->get_slots($page);
248    $lastpage = $attemptobj->is_last_page($page);
249}
250
251$output = $PAGE->get_renderer('mod_quiz');
252
253// Arrange for the navigation to be displayed.
254$navbc = $attemptobj->get_navigation_panel($output, 'quiz_review_nav_panel', $page, $showall);
255$regions = $PAGE->blocks->get_regions();
256$PAGE->blocks->add_fake_block($navbc, reset($regions));
257
258echo $output->review_page($attemptobj, $slots, $page, $showall, $lastpage, $options, $summarydata);
259
260// Trigger an event for this review.
261$attemptobj->fire_attempt_reviewed_event();
262