2 // This file is part of Moodle - http://moodle.org/
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.
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.
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/>.
18 * This file contains the definition for the grading table which subclassses easy_table
21 * @copyright 2012 NetSpot {@link http://www.netspot.com.au}
22 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
25 defined('MOODLE_INTERNAL') ||
die();
27 require_once($CFG->libdir
.'/tablelib.php');
28 require_once($CFG->libdir
.'/gradelib.php');
29 require_once($CFG->dirroot
.'/mod/assign/locallib.php');
32 * Extends table_sql to provide a table of assignment submissions
35 * @copyright 2012 NetSpot {@link http://www.netspot.com.au}
36 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
38 class assign_grading_table
extends table_sql
implements renderable
{
39 /** @var assign $assignment */
40 private $assignment = null;
41 /** @var int $perpage */
42 private $perpage = 10;
43 /** @var int $rownum (global index of current row in table) */
45 /** @var renderer_base for getting output */
46 private $output = null;
47 /** @var stdClass gradinginfo */
48 private $gradinginfo = null;
49 /** @var int $tablemaxrows */
50 private $tablemaxrows = 10000;
51 /** @var boolean $quickgrading */
52 private $quickgrading = false;
53 /** @var boolean $hasgrantextension - Only do the capability check once for the entire table */
54 private $hasgrantextension = false;
55 /** @var boolean $hasgrade - Only do the capability check once for the entire table */
56 private $hasgrade = false;
57 /** @var array $groupsubmissions - A static cache of group submissions */
58 private $groupsubmissions = array();
59 /** @var array $submissiongroups - A static cache of submission groups */
60 private $submissiongroups = array();
61 /** @var string $plugingradingbatchoperations - List of plugin supported batch operations */
62 public $plugingradingbatchoperations = array();
63 /** @var array $plugincache - A cache of plugin lookups to match a column name to a plugin efficiently */
64 private $plugincache = array();
65 /** @var array $scale - A list of the keys and descriptions for the custom scale */
66 private $scale = null;
69 * overridden constructor keeps a reference to the assignment class that is displaying this table
71 * @param assign $assignment The assignment class
72 * @param int $perpage how many per page
73 * @param string $filter The current filter
74 * @param int $rowoffset For showing a subsequent page of results
75 * @param bool $quickgrading Is this table wrapped in a quickgrading form?
76 * @param string $downloadfilename
78 public function __construct(assign
$assignment,
83 $downloadfilename = null) {
84 global $CFG, $PAGE, $DB, $USER;
85 parent
::__construct('mod_assign_grading');
86 $this->is_persistent(true);
87 $this->assignment
= $assignment;
89 // Check permissions up front.
90 $this->hasgrantextension
= has_capability('mod/assign:grantextension',
91 $this->assignment
->get_context());
92 $this->hasgrade
= $this->assignment
->can_grade();
94 // Check if we have the elevated view capablities to see the blind details.
95 $this->hasviewblind
= has_capability('mod/assign:viewblinddetails',
96 $this->assignment
->get_context());
98 foreach ($assignment->get_feedback_plugins() as $plugin) {
99 if ($plugin->is_visible() && $plugin->is_enabled()) {
100 foreach ($plugin->get_grading_batch_operations() as $action => $description) {
101 if (empty($this->plugingradingbatchoperations
)) {
102 $this->plugingradingbatchoperations
[$plugin->get_type()] = array();
104 $this->plugingradingbatchoperations
[$plugin->get_type()][$action] = $description;
108 $this->perpage
= $perpage;
109 $this->quickgrading
= $quickgrading && $this->hasgrade
;
110 $this->output
= $PAGE->get_renderer('mod_assign');
112 $urlparams = array('action'=>'grading', 'id'=>$assignment->get_course_module()->id
);
113 $url = new moodle_url($CFG->wwwroot
. '/mod/assign/view.php', $urlparams);
114 $this->define_baseurl($url);
116 // Do some business - then set the sql.
117 $currentgroup = groups_get_activity_group($assignment->get_course_module(), true);
120 $this->rownum
= $rowoffset - 1;
123 $users = array_keys( $assignment->list_participants($currentgroup, true));
124 if (count($users) == 0) {
125 // Insert a record that will never match to the sql is still valid.
130 $params['assignmentid1'] = (int)$this->assignment
->get_instance()->id
;
131 $params['assignmentid2'] = (int)$this->assignment
->get_instance()->id
;
132 $params['assignmentid3'] = (int)$this->assignment
->get_instance()->id
;
133 $params['newstatus'] = ASSIGN_SUBMISSION_STATUS_NEW
;
135 $extrauserfields = get_extra_user_fields($this->assignment
->get_context());
137 $fields = user_picture
::fields('u', $extrauserfields) . ', ';
138 $fields .= 'u.id as userid, ';
139 $fields .= 's.status as status, ';
140 $fields .= 's.id as submissionid, ';
141 $fields .= 's.timecreated as firstsubmission, ';
142 $fields .= "CASE WHEN status <> :newstatus THEN s.timemodified ELSE NULL END as timesubmitted, ";
143 $fields .= 's.attemptnumber as attemptnumber, ';
144 $fields .= 'g.id as gradeid, ';
145 $fields .= 'g.grade as grade, ';
146 $fields .= 'g.timemodified as timemarked, ';
147 $fields .= 'g.timecreated as firstmarked, ';
148 $fields .= 'uf.mailed as mailed, ';
149 $fields .= 'uf.locked as locked, ';
150 $fields .= 'uf.extensionduedate as extensionduedate, ';
151 $fields .= 'uf.workflowstate as workflowstate, ';
152 $fields .= 'uf.allocatedmarker as allocatedmarker';
155 LEFT JOIN {assign_submission} s
157 AND s.assignment = :assignmentid1
159 LEFT JOIN {assign_grades} g
161 AND g.assignment = :assignmentid2 ';
163 // For group submissions we don't immediately create an entry in the assign_submission table for each user,
164 // instead the userid is set to 0. In this case we use a different query to retrieve the grade for the user.
165 if ($this->assignment
->get_instance()->teamsubmission
) {
166 $params['assignmentid4'] = (int) $this->assignment
->get_instance()->id
;
167 $grademaxattempt = 'SELECT mxg.userid, MAX(mxg.attemptnumber) AS maxattempt
168 FROM {assign_grades} mxg
169 WHERE mxg.assignment = :assignmentid4
170 GROUP BY mxg.userid';
171 $from .= 'LEFT JOIN (' . $grademaxattempt . ') gmx
173 AND g.attemptnumber = gmx.maxattempt ';
175 $from .= 'AND g.attemptnumber = s.attemptnumber ';
178 $from .= 'LEFT JOIN {assign_user_flags} uf
180 AND uf.assignment = :assignmentid3 ';
182 $hasoverrides = $this->assignment
->has_overrides();
185 $params['assignmentid5'] = (int)$this->assignment
->get_instance()->id
;
186 $params['assignmentid6'] = (int)$this->assignment
->get_instance()->id
;
187 $params['assignmentid7'] = (int)$this->assignment
->get_instance()->id
;
188 $params['assignmentid8'] = (int)$this->assignment
->get_instance()->id
;
189 $params['assignmentid9'] = (int)$this->assignment
->get_instance()->id
;
191 $fields .= ', priority.priority, ';
192 $fields .= 'effective.allowsubmissionsfromdate, ';
193 $fields .= 'effective.duedate, ';
194 $fields .= 'effective.cutoffdate ';
196 $from .= ' LEFT JOIN (
197 SELECT merged.userid, min(merged.priority) priority FROM (
198 ( SELECT u.id as userid, 9999999 AS priority
202 ( SELECT uo.userid, 0 AS priority
203 FROM {assign_overrides} uo
204 WHERE uo.assignid = :assignmentid5
207 ( SELECT gm.userid, go.sortorder AS priority
208 FROM {assign_overrides} go
209 JOIN {groups} g ON g.id = go.groupid
210 JOIN {groups_members} gm ON gm.groupid = g.id
211 WHERE go.assignid = :assignmentid6
214 GROUP BY merged.userid
215 ) priority ON priority.userid = u.id
218 (SELECT 9999999 AS priority,
220 a.allowsubmissionsfromdate,
224 JOIN {assign} a ON a.id = :assignmentid7
227 (SELECT 0 AS priority,
229 uo.allowsubmissionsfromdate,
232 FROM {assign_overrides} uo
233 WHERE uo.assignid = :assignmentid8
236 (SELECT go.sortorder AS priority,
238 go.allowsubmissionsfromdate,
241 FROM {assign_overrides} go
242 JOIN {groups} g ON g.id = go.groupid
243 JOIN {groups_members} gm ON gm.groupid = g.id
244 WHERE go.assignid = :assignmentid9
247 ) effective ON effective.priority = priority.priority AND effective.userid = priority.userid ';
250 if (!empty($this->assignment
->get_instance()->blindmarking
)) {
251 $from .= 'LEFT JOIN {assign_user_mapping} um
253 AND um.assignment = :assignmentidblind ';
254 $params['assignmentidblind'] = (int)$this->assignment
->get_instance()->id
;
255 $fields .= ', um.id as recordid ';
258 $userparams = array();
261 list($userwhere, $userparams) = $DB->get_in_or_equal($users, SQL_PARAMS_NAMED
, 'user');
262 $where = 'u.id ' . $userwhere;
263 $params = array_merge($params, $userparams);
265 // The filters do not make sense when there are no submissions, so do not apply them.
266 if ($this->assignment
->is_any_submission_plugin_enabled()) {
267 if ($filter == ASSIGN_FILTER_SUBMITTED
) {
268 $where .= ' AND (s.timemodified IS NOT NULL AND
269 s.status = :submitted) ';
270 $params['submitted'] = ASSIGN_SUBMISSION_STATUS_SUBMITTED
;
272 } else if ($filter == ASSIGN_FILTER_NOT_SUBMITTED
) {
273 $where .= ' AND (s.timemodified IS NULL OR s.status <> :submitted) ';
274 $params['submitted'] = ASSIGN_SUBMISSION_STATUS_SUBMITTED
;
275 } else if ($filter == ASSIGN_FILTER_REQUIRE_GRADING
) {
276 $where .= ' AND (s.timemodified IS NOT NULL AND
277 s.status = :submitted AND
278 (s.timemodified >= g.timemodified OR g.timemodified IS NULL OR g.grade IS NULL';
280 // Assignment grade is set to the negative grade scale id when scales are used.
281 if ($this->assignment
->get_instance()->grade
< 0) {
282 // Scale grades are set to -1 when not graded.
283 $where .= ' OR g.grade = -1';
287 $params['submitted'] = ASSIGN_SUBMISSION_STATUS_SUBMITTED
;
289 } else if ($filter == ASSIGN_FILTER_GRANTED_EXTENSION
) {
290 $where .= ' AND uf.extensionduedate > 0 ';
292 } else if (strpos($filter, ASSIGN_FILTER_SINGLE_USER
) === 0) {
293 $userfilter = (int) array_pop(explode('=', $filter));
294 $where .= ' AND (u.id = :userid)';
295 $params['userid'] = $userfilter;
299 if ($this->assignment
->get_instance()->markingworkflow
&&
300 $this->assignment
->get_instance()->markingallocation
) {
301 if (has_capability('mod/assign:manageallocations', $this->assignment
->get_context())) {
302 // Check to see if marker filter is set.
303 $markerfilter = (int)get_user_preferences('assign_markerfilter', '');
304 if (!empty($markerfilter)) {
305 if ($markerfilter == ASSIGN_MARKER_FILTER_NO_MARKER
) {
306 $where .= ' AND (uf.allocatedmarker IS NULL OR uf.allocatedmarker = 0)';
308 $where .= ' AND uf.allocatedmarker = :markerid';
309 $params['markerid'] = $markerfilter;
315 if ($this->assignment
->get_instance()->markingworkflow
) {
316 $workflowstates = $this->assignment
->get_marking_workflow_states_for_current_user();
317 if (!empty($workflowstates)) {
318 $workflowfilter = get_user_preferences('assign_workflowfilter', '');
319 if ($workflowfilter == ASSIGN_MARKING_WORKFLOW_STATE_NOTMARKED
) {
320 $where .= ' AND (uf.workflowstate = :workflowstate OR uf.workflowstate IS NULL OR '.
321 $DB->sql_isempty('assign_user_flags', 'workflowstate', true, true).')';
322 $params['workflowstate'] = $workflowfilter;
323 } else if (array_key_exists($workflowfilter, $workflowstates)) {
324 $where .= ' AND uf.workflowstate = :workflowstate';
325 $params['workflowstate'] = $workflowfilter;
330 $this->set_sql($fields, $from, $where, $params);
332 if ($downloadfilename) {
333 $this->is_downloading('csv', $downloadfilename);
340 if (!$this->is_downloading() && $this->hasgrade
) {
341 $columns[] = 'select';
342 $headers[] = get_string('select') .
343 '<div class="selectall"><label class="accesshide" for="selectall">' . get_string('selectall') . '</label>
344 <input type="checkbox" id="selectall" name="selectall" title="' . get_string('selectall') . '"/></div>';
348 if ($this->hasviewblind ||
!$this->assignment
->is_blind_marking()) {
349 if (!$this->is_downloading()) {
350 $columns[] = 'picture';
351 $headers[] = get_string('pictureofuser');
353 $columns[] = 'recordid';
354 $headers[] = get_string('recordid', 'assign');
358 $columns[] = 'fullname';
359 $headers[] = get_string('fullname');
361 // Participant # details if can view real identities.
362 if ($this->assignment
->is_blind_marking()) {
363 if (!$this->is_downloading()) {
364 $columns[] = 'recordid';
365 $headers[] = get_string('recordid', 'assign');
369 foreach ($extrauserfields as $extrafield) {
370 $columns[] = $extrafield;
371 $headers[] = get_user_field_name($extrafield);
375 $columns[] = 'recordid';
376 $headers[] = get_string('recordid', 'assign');
379 // Submission status.
380 $columns[] = 'status';
381 $headers[] = get_string('status', 'assign');
384 // Allowsubmissionsfromdate.
385 $columns[] = 'allowsubmissionsfromdate';
386 $headers[] = get_string('allowsubmissionsfromdate', 'assign');
389 $columns[] = 'duedate';
390 $headers[] = get_string('duedate', 'assign');
393 $columns[] = 'cutoffdate';
394 $headers[] = get_string('cutoffdate', 'assign');
397 // Team submission columns.
398 if ($assignment->get_instance()->teamsubmission
) {
400 $headers[] = get_string('submissionteam', 'assign');
403 if ($this->assignment
->get_instance()->markingworkflow
&&
404 $this->assignment
->get_instance()->markingallocation
&&
405 has_capability('mod/assign:manageallocations', $this->assignment
->get_context())) {
406 // Add a column for the allocated marker.
407 $columns[] = 'allocatedmarker';
408 $headers[] = get_string('marker', 'assign');
411 $columns[] = 'grade';
412 $headers[] = get_string('grade');
413 if ($this->is_downloading()) {
414 if ($this->assignment
->get_instance()->grade
>= 0) {
415 $columns[] = 'grademax';
416 $headers[] = get_string('maxgrade', 'assign');
418 // This is a custom scale.
419 $columns[] = 'scale';
420 $headers[] = get_string('scale', 'assign');
423 if ($this->assignment
->get_instance()->markingworkflow
) {
424 // Add a column for the marking workflow state.
425 $columns[] = 'workflowstate';
426 $headers[] = get_string('markingworkflowstate', 'assign');
428 // Add a column for the list of valid marking workflow states.
429 $columns[] = 'gradecanbechanged';
430 $headers[] = get_string('gradecanbechanged', 'assign');
432 if (!$this->is_downloading() && $this->hasgrade
) {
433 // We have to call this column userid so we can use userid as a default sortable column.
434 $columns[] = 'userid';
435 $headers[] = get_string('edit');
438 // Submission plugins.
439 if ($assignment->is_any_submission_plugin_enabled()) {
440 $columns[] = 'timesubmitted';
441 $headers[] = get_string('lastmodifiedsubmission', 'assign');
443 foreach ($this->assignment
->get_submission_plugins() as $plugin) {
444 if ($this->is_downloading()) {
445 if ($plugin->is_visible() && $plugin->is_enabled()) {
446 foreach ($plugin->get_editor_fields() as $field => $description) {
447 $index = 'plugin' . count($this->plugincache
);
448 $this->plugincache
[$index] = array($plugin, $field);
450 $headers[] = $plugin->get_name();
454 if ($plugin->is_visible() && $plugin->is_enabled() && $plugin->has_user_summary()) {
455 $index = 'plugin' . count($this->plugincache
);
456 $this->plugincache
[$index] = array($plugin);
458 $headers[] = $plugin->get_name();
465 $columns[] = 'timemarked';
466 $headers[] = get_string('lastmodifiedgrade', 'assign');
469 foreach ($this->assignment
->get_feedback_plugins() as $plugin) {
470 if ($this->is_downloading()) {
471 if ($plugin->is_visible() && $plugin->is_enabled()) {
472 foreach ($plugin->get_editor_fields() as $field => $description) {
473 $index = 'plugin' . count($this->plugincache
);
474 $this->plugincache
[$index] = array($plugin, $field);
476 $headers[] = $description;
479 } else if ($plugin->is_visible() && $plugin->is_enabled() && $plugin->has_user_summary()) {
480 $index = 'plugin' . count($this->plugincache
);
481 $this->plugincache
[$index] = array($plugin);
483 $headers[] = $plugin->get_name();
487 // Exclude 'Final grade' column in downloaded grading worksheets.
488 if (!$this->is_downloading()) {
490 $columns[] = 'finalgrade';
491 $headers[] = get_string('finalgrade', 'grades');
494 // Load the grading info for all users.
495 $this->gradinginfo
= grade_get_grades($this->assignment
->get_course()->id
,
498 $this->assignment
->get_instance()->id
,
501 if (!empty($CFG->enableoutcomes
) && !empty($this->gradinginfo
->outcomes
)) {
502 $columns[] = 'outcomes';
503 $headers[] = get_string('outcomes', 'grades');
507 $this->define_columns($columns);
508 $this->define_headers($headers);
509 foreach ($extrauserfields as $extrafield) {
510 $this->column_class($extrafield, $extrafield);
512 $this->no_sorting('recordid');
513 $this->no_sorting('finalgrade');
514 $this->no_sorting('userid');
515 $this->no_sorting('select');
516 $this->no_sorting('outcomes');
518 if ($assignment->get_instance()->teamsubmission
) {
519 $this->no_sorting('team');
522 $plugincolumnindex = 0;
523 foreach ($this->assignment
->get_submission_plugins() as $plugin) {
524 if ($plugin->is_visible() && $plugin->is_enabled() && $plugin->has_user_summary()) {
525 $submissionpluginindex = 'plugin' . $plugincolumnindex++
;
526 $this->no_sorting($submissionpluginindex);
529 foreach ($this->assignment
->get_feedback_plugins() as $plugin) {
530 if ($plugin->is_visible() && $plugin->is_enabled() && $plugin->has_user_summary()) {
531 $feedbackpluginindex = 'plugin' . $plugincolumnindex++
;
532 $this->no_sorting($feedbackpluginindex);
536 // When there is no data we still want the column headers printed in the csv file.
537 if ($this->is_downloading()) {
538 $this->start_output();
543 * Before adding each row to the table make sure rownum is incremented.
545 * @param array $row row of data from db used to make one row of the table.
546 * @return array one row for the table
548 public function format_row($row) {
549 if ($this->rownum
< 0) {
550 $this->rownum
= $this->currpage
* $this->pagesize
;
555 return parent
::format_row($row);
559 * Add a column with an ID that uniquely identifies this user in this assignment.
561 * @param stdClass $row
564 public function col_recordid(stdClass
$row) {
565 if (empty($row->recordid
)) {
566 $row->recordid
= $this->assignment
->get_uniqueid_for_user($row->userid
);
568 return get_string('hiddenuser', 'assign') . $row->recordid
;
573 * Add the userid to the row class so it can be updated via ajax.
575 * @param stdClass $row The row of data
576 * @return string The row class
578 public function get_row_class($row) {
579 return 'user' . $row->userid
;
583 * Return the number of rows to display on a single page.
585 * @return int The number of rows per page
587 public function get_rows_per_page() {
588 return $this->perpage
;
592 * list current marking workflow state
594 * @param stdClass $row
597 public function col_workflowstatus(stdClass
$row) {
600 $gradingdisabled = $this->assignment
->grading_disabled($row->id
);
601 // The function in the assignment keeps a static cache of this list of states.
602 $workflowstates = $this->assignment
->get_marking_workflow_states_for_current_user();
603 $workflowstate = $row->workflowstate
;
604 if (empty($workflowstate)) {
605 $workflowstate = ASSIGN_MARKING_WORKFLOW_STATE_NOTMARKED
;
607 if ($this->quickgrading
&& !$gradingdisabled) {
608 $notmarked = get_string('markingworkflowstatenotmarked', 'assign');
609 $name = 'quickgrade_' . $row->id
. '_workflowstate';
610 $o .= html_writer
::select($workflowstates, $name, $workflowstate, array('' => $notmarked));
611 // Check if this user is a marker that can't manage allocations and doesn't have the marker column added.
612 if ($this->assignment
->get_instance()->markingworkflow
&&
613 $this->assignment
->get_instance()->markingallocation
&&
614 !has_capability('mod/assign:manageallocations', $this->assignment
->get_context())) {
616 $name = 'quickgrade_' . $row->id
. '_allocatedmarker';
617 $o .= html_writer
::empty_tag('input', array('type' => 'hidden', 'name' => $name,
618 'value' => $row->allocatedmarker
));
621 $o .= $this->output
->container(get_string('markingworkflowstate' . $workflowstate, 'assign'), $workflowstate);
627 * For download only - list current marking workflow state
629 * @param stdClass $row - The row of data
630 * @return string The current marking workflow state
632 public function col_workflowstate($row) {
633 $state = $row->workflowstate
;
635 $state = ASSIGN_MARKING_WORKFLOW_STATE_NOTMARKED
;
638 return get_string('markingworkflowstate' . $state, 'assign');
642 * list current marker
644 * @param stdClass $row - The row of data
645 * @return id the user->id of the marker.
647 public function col_allocatedmarker(stdClass
$row) {
648 static $markers = null;
649 static $markerlist = array();
650 if ($markers === null) {
651 list($sort, $params) = users_order_by_sql('u');
652 // Only enrolled users could be assigned as potential markers.
653 $markers = get_enrolled_users($this->assignment
->get_context(), 'mod/assign:grade', 0, 'u.*', $sort);
654 $markerlist[0] = get_string('choosemarker', 'assign');
655 $viewfullnames = has_capability('moodle/site:viewfullnames', $this->assignment
->get_context());
656 foreach ($markers as $marker) {
657 $markerlist[$marker->id
] = fullname($marker, $viewfullnames);
660 if (empty($markerlist)) {
661 // TODO: add some form of notification here that no markers are available.
664 if ($this->is_downloading()) {
665 if (isset($markers[$row->allocatedmarker
])) {
666 return fullname($markers[$row->allocatedmarker
],
667 has_capability('moodle/site:viewfullnames', $this->assignment
->get_context()));
673 if ($this->quickgrading
&& has_capability('mod/assign:manageallocations', $this->assignment
->get_context()) &&
674 (empty($row->workflowstate
) ||
675 $row->workflowstate
== ASSIGN_MARKING_WORKFLOW_STATE_INMARKING ||
676 $row->workflowstate
== ASSIGN_MARKING_WORKFLOW_STATE_NOTMARKED
)) {
678 $name = 'quickgrade_' . $row->id
. '_allocatedmarker';
679 return html_writer
::select($markerlist, $name, $row->allocatedmarker
, false);
680 } else if (!empty($row->allocatedmarker
)) {
682 if ($this->quickgrading
) { // Add hidden field for quickgrading page.
683 $name = 'quickgrade_' . $row->id
. '_allocatedmarker';
684 $output .= html_writer
::empty_tag('input', array('type'=>'hidden', 'name'=>$name, 'value'=>$row->allocatedmarker
));
686 $output .= $markerlist[$row->allocatedmarker
];
691 * For download only - list all the valid options for this custom scale.
693 * @param stdClass $row - The row of data
694 * @return string A list of valid options for the current scale
696 public function col_scale($row) {
699 if (empty($this->scale
)) {
700 $dbparams = array('id'=>-($this->assignment
->get_instance()->grade
));
701 $this->scale
= $DB->get_record('scale', $dbparams);
704 if (!empty($this->scale
->scale
)) {
705 return implode("\n", explode(',', $this->scale
->scale
));
711 * Display a grade with scales etc.
713 * @param string $grade
714 * @param boolean $editable
715 * @param int $userid The user id of the user this grade belongs to
716 * @param int $modified Timestamp showing when the grade was last modified
717 * @return string The formatted grade
719 public function display_grade($grade, $editable, $userid, $modified) {
720 if ($this->is_downloading()) {
721 if ($this->assignment
->get_instance()->grade
>= 0) {
722 if ($grade == -1 ||
$grade === null) {
725 $gradeitem = $this->assignment
->get_grade_item();
726 return format_float($grade, $gradeitem->get_decimals());
728 // This is a custom scale.
729 $scale = $this->assignment
->display_grade($grade, false);
736 return $this->assignment
->display_grade($grade, $editable, $userid, $modified);
740 * Get the team info for this user.
742 * @param stdClass $row
743 * @return string The team name
745 public function col_team(stdClass
$row) {
748 $this->get_group_and_submission($row->id
, $group, $submission, -1);
751 } else if ($this->assignment
->get_instance()->preventsubmissionnotingroup
) {
752 $usergroups = $this->assignment
->get_all_groups($row->id
);
753 if (count($usergroups) > 1) {
754 return get_string('multipleteamsgrader', 'assign');
756 return get_string('noteamgrader', 'assign');
759 return get_string('defaultteam', 'assign');
763 * Use a static cache to try and reduce DB calls.
765 * @param int $userid The user id for this submission
766 * @param int $group The groupid (returned)
767 * @param stdClass|false $submission The stdClass submission or false (returned)
768 * @param int $attemptnumber Return a specific attempt number (-1 for latest)
770 protected function get_group_and_submission($userid, &$group, &$submission, $attemptnumber) {
772 if (isset($this->submissiongroups
[$userid])) {
773 $group = $this->submissiongroups
[$userid];
775 $group = $this->assignment
->get_submission_group($userid, false);
776 $this->submissiongroups
[$userid] = $group;
781 $groupid = $group->id
;
784 // Static cache is keyed by groupid and attemptnumber.
785 // We may need both the latest and previous attempt in the same page.
786 if (isset($this->groupsubmissions
[$groupid . ':' . $attemptnumber])) {
787 $submission = $this->groupsubmissions
[$groupid . ':' . $attemptnumber];
789 $submission = $this->assignment
->get_group_submission($userid, $groupid, false, $attemptnumber);
790 $this->groupsubmissions
[$groupid . ':' . $attemptnumber] = $submission;
795 * Format a list of outcomes.
797 * @param stdClass $row
800 public function col_outcomes(stdClass
$row) {
802 foreach ($this->gradinginfo
->outcomes
as $index => $outcome) {
803 $options = make_grades_menu(-$outcome->scaleid
);
805 $options[0] = get_string('nooutcome', 'grades');
806 if ($this->quickgrading
&& !($outcome->grades
[$row->userid
]->locked
)) {
807 $select = '<select name="outcome_' . $index . '_' . $row->userid
. '" class="quickgrade">';
808 foreach ($options as $optionindex => $optionvalue) {
810 if ($outcome->grades
[$row->userid
]->grade
== $optionindex) {
811 $selected = 'selected="selected"';
813 $select .= '<option value="' . $optionindex . '"' . $selected . '>' . $optionvalue . '</option>';
815 $select .= '</select>';
816 $outcomes .= $this->output
->container($outcome->name
. ': ' . $select, 'outcome');
818 $name = $outcome->name
. ': ' . $options[$outcome->grades
[$row->userid
]->grade
];
819 if ($this->is_downloading()) {
822 $outcomes .= $this->output
->container($name, 'outcome');
832 * Format a user picture for display.
834 * @param stdClass $row
837 public function col_picture(stdClass
$row) {
838 return $this->output
->user_picture($row);
842 * Format a user record for display (link to profile).
844 * @param stdClass $row
847 public function col_fullname($row) {
848 if (!$this->is_downloading()) {
849 $courseid = $this->assignment
->get_course()->id
;
850 $link= new moodle_url('/user/view.php', array('id' =>$row->id
, 'course'=>$courseid));
851 $fullname = $this->output
->action_link($link, $this->assignment
->fullname($row));
853 $fullname = $this->assignment
->fullname($row);
856 if (!$this->assignment
->is_active_user($row->id
)) {
857 $suspendedstring = get_string('userenrolmentsuspended', 'grades');
858 $fullname .= ' ' . $this->output
->pix_icon('i/enrolmentsuspended', $suspendedstring);
859 $fullname = html_writer
::tag('span', $fullname, array('class' => 'usersuspended'));
865 * Insert a checkbox for selecting the current row for batch operations.
867 * @param stdClass $row
870 public function col_select(stdClass
$row) {
871 $selectcol = '<label class="accesshide" for="selectuser_' . $row->userid
. '">';
872 $selectcol .= get_string('selectuser', 'assign', $this->assignment
->fullname($row));
873 $selectcol .= '</label>';
874 $selectcol .= '<input type="checkbox"
875 id="selectuser_' . $row->userid
. '"
877 value="' . $row->userid
. '"/>';
878 $selectcol .= '<input type="hidden"
879 name="grademodified_' . $row->userid
. '"
880 value="' . $row->timemarked
. '"/>';
881 $selectcol .= '<input type="hidden"
882 name="gradeattempt_' . $row->userid
. '"
883 value="' . $row->attemptnumber
. '"/>';
888 * Return a users grades from the listing of all grade data for this assignment.
891 * @return mixed stdClass or false
893 private function get_gradebook_data_for_user($userid) {
894 if (isset($this->gradinginfo
->items
[0]) && $this->gradinginfo
->items
[0]->grades
[$userid]) {
895 return $this->gradinginfo
->items
[0]->grades
[$userid];
901 * Format a column of data for display.
903 * @param stdClass $row
906 public function col_gradecanbechanged(stdClass
$row) {
907 $gradingdisabled = $this->assignment
->grading_disabled($row->id
);
908 if ($gradingdisabled) {
909 return get_string('no');
911 return get_string('yes');
916 * Format a column of data for display
918 * @param stdClass $row
921 public function col_grademax(stdClass
$row) {
922 $gradeitem = $this->assignment
->get_grade_item();
923 return format_float($this->assignment
->get_instance()->grade
, $gradeitem->get_decimals());
927 * Format a column of data for display.
929 * @param stdClass $row
932 public function col_grade(stdClass
$row) {
936 $separator = $this->output
->spacer(array(), true);
938 $gradingdisabled = $this->assignment
->grading_disabled($row->id
);
940 if (!$this->is_downloading() && $this->hasgrade
) {
941 $urlparams = array('id' => $this->assignment
->get_course_module()->id
,
943 'action' => 'grader');
945 if ($this->assignment
->is_blind_marking()) {
946 if (empty($row->recordid
)) {
947 $row->recordid
= $this->assignment
->get_uniqueid_for_user($row->userid
);
949 $urlparams['blindid'] = $row->recordid
;
951 $urlparams['userid'] = $row->userid
;
954 $url = new moodle_url('/mod/assign/view.php', $urlparams);
955 $link = '<a href="' . $url . '" class="btn btn-primary">' . get_string('grade') . '</a>';
956 $grade .= $link . $separator;
959 $grade .= $this->display_grade($row->grade
,
960 $this->quickgrading
&& !$gradingdisabled,
968 * Format a column of data for display.
970 * @param stdClass $row
973 public function col_finalgrade(stdClass
$row) {
976 $grade = $this->get_gradebook_data_for_user($row->userid
);
978 $o = $this->display_grade($grade->grade
, false, $row->userid
, $row->timemarked
);
985 * Format a column of data for display.
987 * @param stdClass $row
990 public function col_timemarked(stdClass
$row) {
993 if ($row->timemarked
&& $row->grade
!== null && $row->grade
>= 0) {
994 $o = userdate($row->timemarked
);
996 if ($row->timemarked
&& $this->is_downloading()) {
997 // Force it for downloads as it affects import.
998 $o = userdate($row->timemarked
);
1005 * Format a column of data for display.
1007 * @param stdClass $row
1010 public function col_timesubmitted(stdClass
$row) {
1014 $submission = false;
1015 $this->get_group_and_submission($row->id
, $group, $submission, -1);
1016 if ($submission && $submission->timemodified
&& $submission->status
!= ASSIGN_SUBMISSION_STATUS_NEW
) {
1017 $o = userdate($submission->timemodified
);
1018 } else if ($row->timesubmitted
&& $row->status
!= ASSIGN_SUBMISSION_STATUS_NEW
) {
1019 $o = userdate($row->timesubmitted
);
1026 * Format a column of data for display
1028 * @param stdClass $row
1031 public function col_status(stdClass
$row) {
1034 $instance = $this->assignment
->get_instance();
1036 $due = $instance->duedate
;
1037 if ($row->extensionduedate
) {
1038 $due = $row->extensionduedate
;
1039 } else if (!empty($row->duedate
)) {
1040 // The override due date.
1041 $due = $row->duedate
;
1045 $submission = false;
1047 if ($instance->teamsubmission
) {
1048 $this->get_group_and_submission($row->id
, $group, $submission, -1);
1051 if ($instance->teamsubmission
&& !$group && !$instance->preventsubmissionnotingroup
) {
1055 if ($group && $submission) {
1056 $timesubmitted = $submission->timemodified
;
1057 $status = $submission->status
;
1059 $timesubmitted = $row->timesubmitted
;
1060 $status = $row->status
;
1063 $displaystatus = $status;
1064 if ($displaystatus == 'new') {
1065 $displaystatus = '';
1068 if ($this->assignment
->is_any_submission_plugin_enabled()) {
1070 $o .= $this->output
->container(get_string('submissionstatus_' . $displaystatus, 'assign'),
1071 array('class'=>'submissionstatus' .$displaystatus));
1072 if ($due && $timesubmitted > $due && $status != ASSIGN_SUBMISSION_STATUS_NEW
) {
1073 $usertime = format_time($timesubmitted - $due);
1074 $latemessage = get_string('submittedlateshort',
1077 $o .= $this->output
->container($latemessage, 'latesubmission');
1080 $lockedstr = get_string('submissionslockedshort', 'assign');
1081 $o .= $this->output
->container($lockedstr, 'lockedsubmission');
1084 // Add status of "grading" if markflow is not enabled.
1085 if (!$instance->markingworkflow
) {
1086 if ($row->grade
!== null && $row->grade
>= 0) {
1087 if ($row->timemarked
< $row->timesubmitted
) {
1088 $o .= $this->output
->container(get_string('gradedfollowupsubmit', 'assign'), 'gradingreminder');
1090 $o .= $this->output
->container(get_string('graded', 'assign'), 'submissiongraded');
1092 } else if (!$timesubmitted ||
$status == ASSIGN_SUBMISSION_STATUS_NEW
) {
1094 if ($due && ($now > $due)) {
1095 $overduestr = get_string('overdue', 'assign', format_time($now - $due));
1096 $o .= $this->output
->container($overduestr, 'overduesubmission');
1102 if ($instance->markingworkflow
) {
1103 $o .= $this->col_workflowstatus($row);
1105 if ($row->extensionduedate
) {
1106 $userdate = userdate($row->extensionduedate
);
1107 $extensionstr = get_string('userextensiondate', 'assign', $userdate);
1108 $o .= $this->output
->container($extensionstr, 'extensiondate');
1111 if ($this->is_downloading()) {
1112 $o = strip_tags(rtrim(str_replace('</div>', ' - ', $o), '- '));
1119 * Format a column of data for display.
1121 * @param stdClass $row
1124 public function col_allowsubmissionsfromdate(stdClass
$row) {
1127 if ($row->allowsubmissionsfromdate
) {
1128 $userdate = userdate($row->allowsubmissionsfromdate
);
1129 $o = ($this->is_downloading()) ?
$userdate : $this->output
->container($userdate, 'allowsubmissionsfromdate');
1136 * Format a column of data for display.
1138 * @param stdClass $row
1141 public function col_duedate(stdClass
$row) {
1144 if ($row->duedate
) {
1145 $userdate = userdate($row->duedate
);
1146 $o = ($this->is_downloading()) ?
$userdate : $this->output
->container($userdate, 'duedate');
1153 * Format a column of data for display.
1155 * @param stdClass $row
1158 public function col_cutoffdate(stdClass
$row) {
1161 if ($row->cutoffdate
) {
1162 $userdate = userdate($row->cutoffdate
);
1163 $o = ($this->is_downloading()) ?
$userdate : $this->output
->container($userdate, 'cutoffdate');
1170 * Format a column of data for display.
1172 * @param stdClass $row
1175 public function col_userid(stdClass
$row) {
1182 $urlparams = array('id' => $this->assignment
->get_course_module()->id
,
1184 'action' => 'grader');
1186 if ($this->assignment
->is_blind_marking()) {
1187 if (empty($row->recordid
)) {
1188 $row->recordid
= $this->assignment
->get_uniqueid_for_user($row->userid
);
1190 $urlparams['blindid'] = $row->recordid
;
1192 $urlparams['userid'] = $row->userid
;
1194 $url = new moodle_url('/mod/assign/view.php', $urlparams);
1198 $description = get_string('grade');
1200 $description = get_string('updategrade', 'assign');
1202 $actions['grade'] = new action_menu_link_secondary(
1208 // Everything we need is in the row.
1211 if ($this->assignment
->get_instance()->teamsubmission
) {
1212 // Use the cache for this.
1213 $submission = false;
1215 $this->get_group_and_submission($row->id
, $group, $submission, -1);
1218 $submissionsopen = $this->assignment
->submissions_open($row->id
,
1222 $this->gradinginfo
);
1223 $caneditsubmission = $this->assignment
->can_edit_submission($row->id
, $USER->id
);
1225 // Hide for offline assignments.
1226 if ($this->assignment
->is_any_submission_plugin_enabled()) {
1227 if (!$row->status ||
1228 $row->status
== ASSIGN_SUBMISSION_STATUS_DRAFT ||
1229 !$this->assignment
->get_instance()->submissiondrafts
) {
1231 if (!$row->locked
) {
1232 $urlparams = array('id' => $this->assignment
->get_course_module()->id
,
1235 'sesskey'=>sesskey(),
1236 'page'=>$this->currpage
);
1237 $url = new moodle_url('/mod/assign/view.php', $urlparams);
1239 $description = get_string('preventsubmissionsshort', 'assign');
1240 $actions['lock'] = new action_menu_link_secondary(
1246 $urlparams = array('id' => $this->assignment
->get_course_module()->id
,
1249 'sesskey'=>sesskey(),
1250 'page'=>$this->currpage
);
1251 $url = new moodle_url('/mod/assign/view.php', $urlparams);
1252 $description = get_string('allowsubmissionsshort', 'assign');
1253 $actions['unlock'] = new action_menu_link_secondary(
1261 if ($submissionsopen &&
1262 $USER->id
!= $row->id
&&
1263 $caneditsubmission) {
1264 $urlparams = array('id' => $this->assignment
->get_course_module()->id
,
1266 'action'=>'editsubmission',
1267 'sesskey'=>sesskey(),
1268 'page'=>$this->currpage
);
1269 $url = new moodle_url('/mod/assign/view.php', $urlparams);
1270 $description = get_string('editsubmission', 'assign');
1271 $actions['editsubmission'] = new action_menu_link_secondary(
1278 if (($this->assignment
->get_instance()->duedate ||
1279 $this->assignment
->get_instance()->cutoffdate
) &&
1280 $this->hasgrantextension
) {
1281 $urlparams = array('id' => $this->assignment
->get_course_module()->id
,
1282 'userid' => $row->id
,
1283 'action' => 'grantextension',
1284 'sesskey' => sesskey(),
1285 'page' => $this->currpage
);
1286 $url = new moodle_url('/mod/assign/view.php', $urlparams);
1287 $description = get_string('grantextension', 'assign');
1288 $actions['grantextension'] = new action_menu_link_secondary(
1294 if ($row->status
== ASSIGN_SUBMISSION_STATUS_SUBMITTED
&&
1295 $this->assignment
->get_instance()->submissiondrafts
) {
1296 $urlparams = array('id' => $this->assignment
->get_course_module()->id
,
1298 'action'=>'reverttodraft',
1299 'sesskey'=>sesskey(),
1300 'page'=>$this->currpage
);
1301 $url = new moodle_url('/mod/assign/view.php', $urlparams);
1302 $description = get_string('reverttodraftshort', 'assign');
1303 $actions['reverttodraft'] = new action_menu_link_secondary(
1309 if ($row->status
== ASSIGN_SUBMISSION_STATUS_DRAFT
&&
1310 $this->assignment
->get_instance()->submissiondrafts
&&
1311 $caneditsubmission &&
1313 $row->id
!= $USER->id
) {
1314 $urlparams = array('id' => $this->assignment
->get_course_module()->id
,
1316 'action'=>'submitotherforgrading',
1317 'sesskey'=>sesskey(),
1318 'page'=>$this->currpage
);
1319 $url = new moodle_url('/mod/assign/view.php', $urlparams);
1320 $description = get_string('submitforgrading', 'assign');
1321 $actions['submitforgrading'] = new action_menu_link_secondary(
1328 $ismanual = $this->assignment
->get_instance()->attemptreopenmethod
== ASSIGN_ATTEMPT_REOPEN_METHOD_MANUAL
;
1329 $hassubmission = !empty($row->status
);
1330 $notreopened = $hassubmission && $row->status
!= ASSIGN_SUBMISSION_STATUS_REOPENED
;
1331 $isunlimited = $this->assignment
->get_instance()->maxattempts
== ASSIGN_UNLIMITED_ATTEMPTS
;
1332 $hasattempts = $isunlimited ||
$row->attemptnumber
< $this->assignment
->get_instance()->maxattempts
- 1;
1334 if ($ismanual && $hassubmission && $notreopened && $hasattempts) {
1335 $urlparams = array('id' => $this->assignment
->get_course_module()->id
,
1337 'action'=>'addattempt',
1338 'sesskey'=>sesskey(),
1339 'page'=>$this->currpage
);
1340 $url = new moodle_url('/mod/assign/view.php', $urlparams);
1341 $description = get_string('addattempt', 'assign');
1342 $actions['addattempt'] = new action_menu_link_secondary(
1349 $menu = new action_menu();
1350 $menu->set_owner_selector('.gradingtable-actionmenu');
1351 $menu->set_alignment(action_menu
::TL
, action_menu
::BL
);
1352 $menu->set_constraint('.gradingtable > .no-overflow');
1353 $menu->set_menu_trigger(get_string('edit'));
1354 foreach ($actions as $action) {
1355 $menu->add($action);
1358 // Prioritise the menu ahead of all other actions.
1359 $menu->prioritise
= true;
1361 $edit .= $this->output
->render($menu);
1367 * Write the plugin summary with an optional link to view the full feedback/submission.
1369 * @param assign_plugin $plugin Submission plugin or feedback plugin
1370 * @param stdClass $item Submission or grade
1371 * @param string $returnaction The return action to pass to the
1372 * view_submission page (the current page)
1373 * @param string $returnparams The return params to pass to the view_submission
1374 * page (the current page)
1375 * @return string The summary with an optional link
1377 private function format_plugin_summary_with_link(assign_plugin
$plugin,
1382 $showviewlink = false;
1384 $summary = $plugin->view_summary($item, $showviewlink);
1386 if ($showviewlink) {
1387 $viewstr = get_string('view' . substr($plugin->get_subtype(), strlen('assign')), 'assign');
1388 $icon = $this->output
->pix_icon('t/preview', $viewstr);
1389 $urlparams = array('id' => $this->assignment
->get_course_module()->id
,
1392 'plugin'=>$plugin->get_type(),
1393 'action'=>'viewplugin' . $plugin->get_subtype(),
1394 'returnaction'=>$returnaction,
1395 'returnparams'=>http_build_query($returnparams));
1396 $url = new moodle_url('/mod/assign/view.php', $urlparams);
1397 $link = $this->output
->action_link($url, $icon);
1398 $separator = $this->output
->spacer(array(), true);
1401 return $link . $separator . $summary;
1406 * Format the submission and feedback columns.
1408 * @param string $colname The column name
1409 * @param stdClass $row The submission row
1410 * @return mixed string or NULL
1412 public function other_cols($colname, $row) {
1413 // For extra user fields the result is already in $row.
1414 if (empty($this->plugincache
[$colname])) {
1415 return $row->$colname;
1418 // This must be a plugin field.
1419 $plugincache = $this->plugincache
[$colname];
1421 $plugin = $plugincache[0];
1424 if (isset($plugincache[1])) {
1425 $field = $plugincache[1];
1428 if ($plugin->is_visible() && $plugin->is_enabled()) {
1429 if ($plugin->get_subtype() == 'assignsubmission') {
1430 if ($this->assignment
->get_instance()->teamsubmission
) {
1432 $submission = false;
1434 $this->get_group_and_submission($row->id
, $group, $submission, -1);
1436 if ($submission->status
== ASSIGN_SUBMISSION_STATUS_REOPENED
) {
1437 // For a newly reopened submission - we want to show the previous submission in the table.
1438 $this->get_group_and_submission($row->id
, $group, $submission, $submission->attemptnumber
-1);
1440 if (isset($field)) {
1441 return $plugin->get_editor_text($field, $submission->id
);
1443 return $this->format_plugin_summary_with_link($plugin,
1448 } else if ($row->submissionid
) {
1449 if ($row->status
== ASSIGN_SUBMISSION_STATUS_REOPENED
) {
1450 // For a newly reopened submission - we want to show the previous submission in the table.
1451 $submission = $this->assignment
->get_user_submission($row->userid
, false, $row->attemptnumber
- 1);
1453 $submission = new stdClass();
1454 $submission->id
= $row->submissionid
;
1455 $submission->timecreated
= $row->firstsubmission
;
1456 $submission->timemodified
= $row->timesubmitted
;
1457 $submission->assignment
= $this->assignment
->get_instance()->id
;
1458 $submission->userid
= $row->userid
;
1459 $submission->attemptnumber
= $row->attemptnumber
;
1461 // Field is used for only for import/export and refers the the fieldname for the text editor.
1462 if (isset($field)) {
1463 return $plugin->get_editor_text($field, $submission->id
);
1465 return $this->format_plugin_summary_with_link($plugin,
1472 if (isset($field)) {
1473 return $plugin->get_editor_text($field, $row->gradeid
);
1476 if ($row->gradeid
) {
1477 $grade = new stdClass();
1478 $grade->id
= $row->gradeid
;
1479 $grade->timecreated
= $row->firstmarked
;
1480 $grade->timemodified
= $row->timemarked
;
1481 $grade->assignment
= $this->assignment
->get_instance()->id
;
1482 $grade->userid
= $row->userid
;
1483 $grade->grade
= $row->grade
;
1484 $grade->mailed
= $row->mailed
;
1485 $grade->attemptnumber
= $row->attemptnumber
;
1487 if ($this->quickgrading
&& $plugin->supports_quickgrading()) {
1488 return $plugin->get_quickgrading_html($row->userid
, $grade);
1489 } else if ($grade) {
1490 return $this->format_plugin_summary_with_link($plugin,
1501 * Using the current filtering and sorting - load all rows and return a single column from them.
1503 * @param string $columnname The name of the raw column data
1504 * @return array of data
1506 public function get_column_data($columnname) {
1508 $this->currpage
= 0;
1509 $this->query_db($this->tablemaxrows
);
1511 foreach ($this->rawdata
as $row) {
1512 $result[] = $row->$columnname;
1518 * Return things to the renderer.
1520 * @return string the assignment name
1522 public function get_assignment_name() {
1523 return $this->assignment
->get_instance()->name
;
1527 * Return things to the renderer.
1529 * @return int the course module id
1531 public function get_course_module_id() {
1532 return $this->assignment
->get_course_module()->id
;
1536 * Return things to the renderer.
1538 * @return int the course id
1540 public function get_course_id() {
1541 return $this->assignment
->get_course()->id
;
1545 * Return things to the renderer.
1547 * @return stdClass The course context
1549 public function get_course_context() {
1550 return $this->assignment
->get_course_context();
1554 * Return things to the renderer.
1556 * @return bool Does this assignment accept submissions
1558 public function submissions_enabled() {
1559 return $this->assignment
->is_any_submission_plugin_enabled();
1563 * Return things to the renderer.
1565 * @return bool Can this user view all grades (the gradebook)
1567 public function can_view_all_grades() {
1568 $context = $this->assignment
->get_course_context();
1569 return has_capability('gradereport/grader:view', $context) &&
1570 has_capability('moodle/grade:viewall', $context);
1574 * Always return a valid sort - even if the userid column is missing.
1575 * @return array column name => SORT_... constant.
1577 public function get_sort_columns() {
1578 $result = parent
::get_sort_columns();
1580 $assignment = $this->assignment
->get_instance();
1581 if (empty($assignment->blindmarking
)) {
1582 $result = array_merge($result, array('userid' => SORT_ASC
));
1584 $result = array_merge($result, [
1585 'COALESCE(s.timecreated, ' . time() . ')' => SORT_ASC
,
1586 'COALESCE(s.id, ' . PHP_INT_MAX
. ')' => SORT_ASC
,
1587 'um.id' => SORT_ASC
,
1594 * Override the table show_hide_link to not show for select column.
1596 * @param string $column the column name, index into various names.
1597 * @param int $index numerical index of the column.
1598 * @return string HTML fragment.
1600 protected function show_hide_link($column, $index) {
1601 if ($index > 0 ||
!$this->hasgrade
) {
1602 return parent
::show_hide_link($column, $index);
1608 * Overides setup to ensure it will only run a single time.
1610 public function setup() {
1611 // Check if the setup function has been called before, we should not run it twice.
1612 // If we do the sortorder of the table will be broken.
1613 if (!empty($this->setup
)) {