mirrored from git://git.moodle.org/moodle.git
/
lib.php
764 lines (655 loc) · 29.5 KB
/
lib.php
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
<?php // $Id$
$COLUMN_HEIGHT = 300;
define('CHOICE_PUBLISH_ANONYMOUS', '0');
define('CHOICE_PUBLISH_NAMES', '1');
define('CHOICE_SHOWRESULTS_NOT', '0');
define('CHOICE_SHOWRESULTS_AFTER_ANSWER', '1');
define('CHOICE_SHOWRESULTS_AFTER_CLOSE', '2');
define('CHOICE_SHOWRESULTS_ALWAYS', '3');
define('CHOICE_DISPLAY_HORIZONTAL', '0');
define('CHOICE_DISPLAY_VERTICAL', '1');
$CHOICE_PUBLISH = array (CHOICE_PUBLISH_ANONYMOUS => get_string('publishanonymous', 'choice'),
CHOICE_PUBLISH_NAMES => get_string('publishnames', 'choice'));
$CHOICE_SHOWRESULTS = array (CHOICE_SHOWRESULTS_NOT => get_string('publishnot', 'choice'),
CHOICE_SHOWRESULTS_AFTER_ANSWER => get_string('publishafteranswer', 'choice'),
CHOICE_SHOWRESULTS_AFTER_CLOSE => get_string('publishafterclose', 'choice'),
CHOICE_SHOWRESULTS_ALWAYS => get_string('publishalways', 'choice'));
$CHOICE_DISPLAY = array (CHOICE_DISPLAY_HORIZONTAL => get_string('displayhorizontal', 'choice'),
CHOICE_DISPLAY_VERTICAL => get_string('displayvertical','choice'));
/// Standard functions /////////////////////////////////////////////////////////
function choice_user_outline($course, $user, $mod, $choice) {
global $DB;
if ($answer = $DB->get_record('choice_answers', array('choiceid' => $choice->id, 'userid' => $user->id))) {
$result->info = "'".format_string(choice_get_option_text($choice, $answer->optionid))."'";
$result->time = $answer->timemodified;
return $result;
}
return NULL;
}
function choice_user_complete($course, $user, $mod, $choice) {
global $DB;
if ($answer = $DB->get_record('choice_answers', array("choiceid" => $choice->id, "userid" => $user->id))) {
$result->info = "'".format_string(choice_get_option_text($choice, $answer->optionid))."'";
$result->time = $answer->timemodified;
echo get_string("answered", "choice").": $result->info. ".get_string("updated", '', userdate($result->time));
} else {
print_string("notanswered", "choice");
}
}
function choice_add_instance($choice) {
global $DB;
// Given an object containing all the necessary data,
// (defined by the form in mod_form.php) this function
// will create a new instance and return the id number
// of the new instance.
$choice->timemodified = time();
if (empty($choice->timerestrict)) {
$choice->timeopen = 0;
$choice->timeclose = 0;
}
//insert answers
if ($choice->id = $DB->insert_record("choice", $choice)) {
foreach ($choice->option as $key => $value) {
$value = trim($value);
if (isset($value) && $value <> '') {
$option = new object();
$option->text = $value;
$option->choiceid = $choice->id;
if (isset($choice->limit[$key])) {
$option->maxanswers = $choice->limit[$key];
}
$option->timemodified = time();
$DB->insert_record("choice_options", $option);
}
}
}
return $choice->id;
}
function choice_update_instance($choice) {
global $DB;
// Given an object containing all the necessary data,
// (defined by the form in mod_form.php) this function
// will update an existing instance with new data.
$choice->id = $choice->instance;
$choice->timemodified = time();
if (empty($choice->timerestrict)) {
$choice->timeopen = 0;
$choice->timeclose = 0;
}
//update, delete or insert answers
foreach ($choice->option as $key => $value) {
$value = trim($value);
$option = new object();
$option->text = $value;
$option->choiceid = $choice->id;
if (isset($choice->limit[$key])) {
$option->maxanswers = $choice->limit[$key];
}
$option->timemodified = time();
if (isset($choice->optionid[$key]) && !empty($choice->optionid[$key])){//existing choice record
$option->id=$choice->optionid[$key];
if (isset($value) && $value <> '') {
$DB->update_record("choice_options", $option);
} else { //empty old option - needs to be deleted.
$DB->delete_records("choice_options", array("id"=>$option->id));
}
} else {
if (isset($value) && $value <> '') {
$DB->insert_record("choice_options", $option);
}
}
}
return $DB->update_record('choice', $choice);
}
function choice_show_form($choice, $user, $cm, $allresponses) {
global $DB;
//$cdisplay is an array of the display info for a choice $cdisplay[$optionid]->text - text name of option.
// ->maxanswers -maxanswers for this option
// ->full - whether this option is full or not. 0=not full, 1=full
$cdisplay = array();
$aid = 0;
$choicefull = false;
$cdisplay = array();
if ($choice->limitanswers) { //set choicefull to true by default if limitanswers.
$choicefull = true;
}
$context = get_context_instance(CONTEXT_MODULE, $cm->id);
foreach ($choice->option as $optionid => $text) {
if (isset($text)) { //make sure there are no dud entries in the db with blank text values.
$cdisplay[$aid]->optionid = $optionid;
$cdisplay[$aid]->text = $text;
$cdisplay[$aid]->maxanswers = $choice->maxanswers[$optionid];
if (isset($allresponses[$optionid])) {
$cdisplay[$aid]->countanswers = count($allresponses[$optionid]);
} else {
$cdisplay[$aid]->countanswers = 0;
}
if ($current = $DB->get_record('choice_answers', array('choiceid' => $choice->id, 'userid' => $user->id, 'optionid' => $optionid))) {
$cdisplay[$aid]->checked = ' checked="checked" ';
} else {
$cdisplay[$aid]->checked = '';
}
if ( $choice->limitanswers &&
($cdisplay[$aid]->countanswers >= $cdisplay[$aid]->maxanswers) &&
(empty($cdisplay[$aid]->checked)) ) {
$cdisplay[$aid]->disabled = ' disabled="disabled" ';
} else {
$cdisplay[$aid]->disabled = '';
if ($choice->limitanswers && ($cdisplay[$aid]->countanswers < $cdisplay[$aid]->maxanswers)) {
$choicefull = false; //set $choicefull to false - as the above condition hasn't been set.
}
}
$aid++;
}
}
switch ($choice->display) {
case CHOICE_DISPLAY_HORIZONTAL:
echo "<table cellpadding=\"20\" cellspacing=\"20\" class=\"boxaligncenter\"><tr>";
foreach ($cdisplay as $cd) {
echo "<td align=\"center\" valign=\"top\">";
echo "<input type=\"radio\" name=\"answer\" value=\"".$cd->optionid."\" alt=\"".strip_tags(format_text($cd->text))."\"". $cd->checked.$cd->disabled." />";
if (!empty($cd->disabled)) {
echo format_text($cd->text."<br /><strong>".get_string('full', 'choice')."</strong>");
} else {
echo format_text($cd->text);
}
echo "</td>";
}
echo "</tr>";
echo "</table>";
break;
case CHOICE_DISPLAY_VERTICAL:
$displayoptions->para = false;
echo "<table cellpadding=\"10\" cellspacing=\"10\" class=\"boxaligncenter\">";
foreach ($cdisplay as $cd) {
echo "<tr><td align=\"left\">";
echo "<input type=\"radio\" name=\"answer\" value=\"".$cd->optionid."\" alt=\"".strip_tags(format_text($cd->text))."\"". $cd->checked.$cd->disabled." />";
echo format_text($cd->text. ' ', FORMAT_MOODLE, $displayoptions); //display text for option.
if ($choice->limitanswers && ($choice->showresults==CHOICE_SHOWRESULTS_ALWAYS) ){ //if limit is enabled, and show results always has been selected, display info beside each choice.
echo "</td><td>";
if (!empty($cd->disabled)) {
echo get_string('full', 'choice');
} elseif(!empty($cd->checked)) {
//currently do nothing - maybe some text could be added here to signfy that the choice has been 'selected'
} elseif ($cd->maxanswers-$cd->countanswers==1) {
echo ($cd->maxanswers - $cd->countanswers);
echo " ".get_string('spaceleft', 'choice');
} else {
echo ($cd->maxanswers - $cd->countanswers);
echo " ".get_string('spacesleft', 'choice');
}
echo "</td>";
} else if ($choice->limitanswers && ($cd->countanswers >= $cd->maxanswers)) { //if limitanswers and answers exceeded, display "full" beside the choice.
echo " <strong>".get_string('full', 'choice')."</strong>";
}
echo "</td>";
echo "</tr>";
}
echo "</table>";
break;
}
//show save choice button
echo '<div class="button">';
echo "<input type=\"hidden\" name=\"id\" value=\"$cm->id\" />";
if (has_capability('mod/choice:choose', $context, $user->id, false)) { //don't show save button if the logged in user is the guest user.
if ($choicefull) {
print_string('choicefull', 'choice');
echo "</br>";
} else {
echo "<input type=\"submit\" value=\"".get_string("savemychoice","choice")."\" />";
}
if ($choice->allowupdate && $aaa = $DB->get_record('choice_answers', 'choiceid', $choice->id, 'userid', $user->id)) {
echo "<br /><a href='view.php?id=".$cm->id."&action=delchoice'>".get_string("removemychoice","choice")."</a>";
}
} else {
print_string('havetologin', 'choice');
}
echo "</div>";
}
function choice_user_submit_response($formanswer, $choice, $userid, $courseid, $cm) {
global $DB;
$current = $DB->get_record('choice_answers', array('choiceid' => $choice->id, 'userid' => $userid));
$context = get_context_instance(CONTEXT_MODULE, $cm->id);
$countanswers=0;
if($choice->limitanswers) {
// Find out whether groups are being used and enabled
if (groups_get_activity_groupmode($cm) > 0) {
$currentgroup = groups_get_activity_group($cm);
} else {
$currentgroup = 0;
}
if($currentgroup) {
// If groups are being used, retrieve responses only for users in
// current group
global $CFG;
$answers = $DB->get_records_sql("
SELECT
ca.*
FROM
{choice_answers} ca
INNER JOIN {groups_members} gm ON ca.userid=gm.userid
WHERE
optionid=?
AND gm.groupid=?", array($formanswer, $currentgroup));
} else {
// Groups are not used, retrieve all answers for this option ID
$answers = $DB->get_records("choice_answers", array("optionid" => $formanswer));
}
if ($answers) {
foreach ($answers as $a) { //only return enrolled users.
if (has_capability('mod/choice:choose', $context, $a->userid, false)) {
$countanswers++;
}
}
}
$maxans = $choice->maxanswers[$formanswer];
}
if (!($choice->limitanswers && ($countanswers >= $maxans) )) {
if ($current) {
$newanswer = $current;
$newanswer->optionid = $formanswer;
$newanswer->timemodified = time();
if (! $DB->update_record("choice_answers", $newanswer)) {
print_error('cannotupdatechoice', 'choice');
}
add_to_log($courseid, "choice", "choose again", "view.php?id=$cm->id", $choice->id, $cm->id);
} else {
$newanswer = NULL;
$newanswer->choiceid = $choice->id;
$newanswer->userid = $userid;
$newanswer->optionid = $formanswer;
$newanswer->timemodified = time();
if (! $DB->insert_record("choice_answers", $newanswer)) {
print_error('cannotsavechoice', 'choice');
}
add_to_log($courseid, "choice", "choose", "view.php?id=$cm->id", $choice->id, $cm->id);
}
} else {
if (!($current->optionid==$formanswer)) { //check to see if current choice already selected - if not display error
print_error('choicefull', 'choice');
}
}
}
function choice_show_reportlink($user, $cm) {
$responsecount =0;
foreach($user as $optionid => $userlist) {
if ($optionid) {
$responsecount += count($userlist);
}
}
echo '<div class="reportlink">';
echo "<a href=\"report.php?id=$cm->id\">".get_string("viewallresponses", "choice", $responsecount)."</a>";
echo '</div>';
}
function choice_show_results($choice, $course, $cm, $allresponses, $forcepublish='') {
global $CFG, $COLUMN_HEIGHT;
print_heading(get_string("responses", "choice"));
if (empty($forcepublish)) { //alow the publish setting to be overridden
$forcepublish = $choice->publish;
}
if (!$allresponses) {
print_heading(get_string("nousersyet"));
}
$totalresponsecount = 0;
foreach ($allresponses as $optionid => $userlist) {
if ($choice->showunanswered || $optionid) {
$totalresponsecount += count($userlist);
}
}
$context = get_context_instance(CONTEXT_MODULE, $cm->id);
$hascapfullnames = has_capability('moodle/site:viewfullnames', $context);
$viewresponses = has_capability('mod/choice:readresponses', $context);
switch ($forcepublish) {
case CHOICE_PUBLISH_NAMES:
echo '<div id="tablecontainer">';
if ($viewresponses) {
echo '<form id="attemptsform" method="post" action="'.$_SERVER['PHP_SELF'].'" onsubmit="var menu = document.getElementById(\'menuaction\'); return (menu.options[menu.selectedIndex].value == \'delete\' ? \''.addslashes(get_string('deleteattemptcheck','quiz')).'\' : true);">';
echo '<div>';
echo '<input type="hidden" name="id" value="'.$cm->id.'" />';
echo '<input type="hidden" name="mode" value="overview" />';
}
echo "<table cellpadding=\"5\" cellspacing=\"10\" class=\"results names\">";
echo "<tr>";
$columncount = array(); // number of votes in each column
if ($choice->showunanswered) {
$columncount[0] = 0;
echo "<th class=\"col0 header\" scope=\"col\">";
print_string('notanswered', 'choice');
echo "</th>";
}
$count = 1;
foreach ($choice->option as $optionid => $optiontext) {
$columncount[$optionid] = 0; // init counters
echo "<th class=\"col$count header\" scope=\"col\">";
echo format_string($optiontext);
echo "</th>";
$count++;
}
echo "</tr><tr>";
if ($choice->showunanswered) {
echo "<td class=\"col$count data\" >";
// added empty row so that when the next iteration is empty,
// we do not get <table></table> erro from w3c validator
// MDL-7861
echo "<table class=\"choiceresponse\"><tr><td></td></tr>";
foreach ($allresponses[0] as $user) {
echo "<tr>";
echo "<td class=\"picture\">";
print_user_picture($user->id, $course->id, $user->picture);
echo "</td><td class=\"fullname\">";
echo "<a href=\"$CFG->wwwroot/user/view.php?id=$user->id&course=$course->id\">";
echo fullname($user, $hascapfullnames);
echo "</a>";
echo "</td></tr>";
}
echo "</table></td>";
}
$count = 0;
foreach ($choice->option as $optionid => $optiontext) {
echo '<td class="col'.$count.' data" >';
// added empty row so that when the next iteration is empty,
// we do not get <table></table> erro from w3c validator
// MDL-7861
echo '<table class="choiceresponse"><tr><td></td></tr>';
if (isset($allresponses[$optionid])) {
foreach ($allresponses[$optionid] as $user) {
$columncount[$optionid] += 1;
echo '<tr><td class="attemptcell">';
if ($viewresponses and has_capability('mod/choice:deleteresponses',$context)) {
echo '<input type="checkbox" name="attemptid[]" value="'. $user->id. '" />';
}
echo '</td><td class="picture">';
print_user_picture($user->id, $course->id, $user->picture);
echo '</td><td class="fullname">';
echo "<a href=\"$CFG->wwwroot/user/view.php?id=$user->id&course=$course->id\">";
echo fullname($user, $hascapfullnames);
echo '</a>';
echo '</td></tr>';
}
}
$count++;
echo '</table></td>';
}
echo "</tr><tr>";
$count = 0;
if ($choice->showunanswered) {
echo "<td></td>";
}
foreach ($choice->option as $optionid => $optiontext) {
echo "<td align=\"center\" class=\"count\">";
if ($choice->limitanswers) {
echo get_string("taken", "choice").":";
echo $columncount[$optionid];
echo "<br/>";
echo get_string("limit", "choice").":";
$choice_option = $DB->get_record("choice_options", array("id" => $optionid));
echo $choice_option->maxanswers;
} else {
if (isset($columncount[$optionid])) {
echo $columncount[$optionid];
}
}
echo "</td>";
$count++;
}
echo "</tr>";
/// Print "Select all" etc.
if ($viewresponses and has_capability('mod/choice:deleteresponses',$context)) {
echo '<tr><td></td><td>';
echo '<a href="javascript:select_all_in(\'DIV\',null,\'tablecontainer\');">'.get_string('selectall', 'quiz').'</a> / ';
echo '<a href="javascript:deselect_all_in(\'DIV\',null,\'tablecontainer\');">'.get_string('selectnone', 'quiz').'</a> ';
echo ' ';
$options = array('delete' => get_string('delete'));
echo choose_from_menu($options, 'action', '', get_string('withselected', 'quiz'), 'if(this.selectedIndex > 0) submitFormById(\'attemptsform\');', '', true);
echo '<noscript id="noscriptmenuaction" style="display: inline;">';
echo '<div>';
echo '<input type="submit" value="'.get_string('go').'" /></div></noscript>';
echo '<script type="text/javascript">'."\n<!--\n".'document.getElementById("noscriptmenuaction").style.display = "none";'."\n-->\n".'</script>';
echo '</td><td></td></tr>';
}
echo "</table></div>";
if ($viewresponses) {
echo "</form></div>";
}
break;
case CHOICE_PUBLISH_ANONYMOUS:
echo "<table cellpadding=\"5\" cellspacing=\"0\" class=\"results anonymous\">";
echo "<tr>";
$maxcolumn = 0;
if ($choice->showunanswered) {
echo "<th class=\"col0 header\" scope=\"col\">";
print_string('notanswered', 'choice');
echo "</th>";
$column[0] = 0;
foreach ($allresponses[0] as $user) {
$column[0]++;
}
$maxcolumn = $column[0];
}
$count = 1;
foreach ($choice->option as $optionid => $optiontext) {
echo "<th class=\"col$count header\" scope=\"col\">";
echo format_string($optiontext);
echo "</th>";
$column[$optionid] = 0;
if (isset($allresponses[$optionid])) {
$column[$optionid] = count($allresponses[$optionid]);
if ($column[$optionid] > $maxcolumn) {
$maxcolumn = $column[$optionid];
}
} else {
$column[$optionid] = 0;
}
}
echo "</tr><tr>";
$height = 0;
if ($choice->showunanswered) {
if ($maxcolumn) {
$height = $COLUMN_HEIGHT * ((float)$column[0] / (float)$maxcolumn);
}
echo "<td style=\"vertical-align:bottom\" align=\"center\" class=\"col0 data\">";
echo "<img src=\"column.png\" height=\"$height\" width=\"49\" alt=\"\" />";
echo "</td>";
}
$count = 1;
foreach ($choice->option as $optionid => $optiontext) {
if ($maxcolumn) {
$height = $COLUMN_HEIGHT * ((float)$column[$optionid] / (float)$maxcolumn);
}
echo "<td style=\"vertical-align:bottom\" align=\"center\" class=\"col$count data\">";
echo "<img src=\"column.png\" height=\"$height\" width=\"49\" alt=\"\" />";
echo "</td>";
$count++;
}
echo "</tr><tr>";
if ($choice->showunanswered) {
echo '<td align="center" class="col0 count">';
if (!$choice->limitanswers) {
echo $column[0];
echo '<br />('.format_float(((float)$column[0]/(float)$totalresponsecount)*100.0,1).'%)';
}
echo '</td>';
}
$count = 1;
foreach ($choice->option as $optionid => $optiontext) {
echo "<td align=\"center\" class=\"col$count count\">";
if ($choice->limitanswers) {
echo get_string("taken", "choice").":";
echo $column[$optionid].'<br />';
echo get_string("limit", "choice").":";
$choice_option = $DB->get_record("choice_options", array("id" => $optionid));
echo $choice_option->maxanswers;
} else {
echo $column[$optionid];
echo '<br />('.format_float(((float)$column[$optionid]/(float)$totalresponsecount)*100.0,1).'%)';
}
echo "</td>";
$count++;
}
echo "</tr></table>";
break;
}
}
function choice_delete_responses($attemptids, $choiceid) {
global $DB;
if(!is_array($attemptids) || empty($attemptids)) {
return false;
}
foreach($attemptids as $num => $attemptid) {
if(empty($attemptid)) {
unset($attemptids[$num]);
}
}
foreach($attemptids as $attemptid) {
if ($todelete = $DB->get_record('choice_answers', array('choiceid' => $choiceid, 'userid' => $attemptid))) {
$DB->delete_records('choice_answers', array('choiceid' => $choiceid, 'userid' => $attemptid));
}
}
return true;
}
function choice_delete_instance($id) {
global $DB;
// Given an ID of an instance of this module,
// this function will permanently delete the instance
// and any data that depends on it.
if (! $choice = $DB->get_record("choice", array("id"=>"$id"))) {
return false;
}
$result = true;
if (! $DB->delete_records("choice_answers", array("choiceid"=>"$choice->id"))) {
$result = false;
}
if (! $DB->delete_records("choice_options", array("choiceid"=>"$choice->id"))) {
$result = false;
}
if (! $DB->delete_records("choice", array("id"=>"$choice->id"))) {
$result = false;
}
return $result;
}
function choice_get_participants($choiceid) {
//Returns the users with data in one choice
//(users with records in choice_responses, students)
global $DB;
//Get students
$students = $DB->get_records_sql("SELECT DISTINCT u.id, u.id
FROM {user} u,
{choice_answers} a
WHERE a.choiceid = ? AND
u.id = a.userid", array($choiceid));
//Return students array (it contains an array of unique users)
return ($students);
}
function choice_get_option_text($choice, $id) {
global $DB;
// Returns text string which is the answer that matches the id
if ($result = $DB->get_record("choice_options", array("id" => $id))) {
return $result->text;
} else {
return get_string("notanswered", "choice");
}
}
function choice_get_choice($choiceid) {
global $DB;
// Gets a full choice record
if ($choice = $DB->get_record("choice", array("id" => $choiceid))) {
if ($options = $DB->get_records("choice_options", array("choiceid" => $choiceid), "id")) {
foreach ($options as $option) {
$choice->option[$option->id] = $option->text;
$choice->maxanswers[$option->id] = $option->maxanswers;
}
return $choice;
}
}
return false;
}
function choice_get_view_actions() {
return array('view','view all','report');
}
function choice_get_post_actions() {
return array('choose','choose again');
}
/**
* Implementation of the function for printing the form elements that control
* whether the course reset functionality affects the choice.
* @param $mform form passed by reference
*/
function choice_reset_course_form_definition(&$mform) {
$mform->addElement('header', 'choiceheader', get_string('modulenameplural', 'choice'));
$mform->addElement('advcheckbox', 'reset_choice', get_string('removeresponses','choice'));
}
/**
* Course reset form defaults.
*/
function choice_reset_course_form_defaults($course) {
return array('reset_choice'=>1);
}
/**
* Actual implementation of the rest coures functionality, delete all the
* choice responses for course $data->courseid.
* @param $data the data submitted from the reset course.
* @return array status array
*/
function choice_reset_userdata($data) {
global $CFG, $DB;
$componentstr = get_string('modulenameplural', 'choice');
$status = array();
if (!empty($data->reset_choice)) {
$choicessql = "SELECT ch.id
FROM {choice} ch
WHERE ch.course=?";
$DB->delete_records_select('choice_answers', "choiceid IN ($choicessql)", array($data->courseid));
$status[] = array('component'=>$componentstr, 'item'=>get_string('removeresponses', 'choice'), 'error'=>false);
}
/// updating dates - shift may be negative too
if ($data->timeshift) {
shift_course_mod_dates('choice', array('timeopen', 'timeclose'), $data->timeshift, $data->courseid);
$status[] = array('component'=>$componentstr, 'item'=>get_string('datechanged'), 'error'=>false);
}
return $status;
}
function choice_get_response_data($choice, $cm, $groupmode) {
global $CFG, $USER, $DB;
$context = get_context_instance(CONTEXT_MODULE, $cm->id);
/// Get the current group
if ($groupmode > 0) {
$currentgroup = groups_get_activity_group($cm);
} else {
$currentgroup = 0;
}
/// Initialise the returned array, which is a matrix: $allresponses[responseid][userid] = responseobject
$allresponses = array();
/// First get all the users who have access here
/// To start with we assume they are all "unanswered" then move them later
$allresponses[0] = get_users_by_capability($context, 'mod/choice:choose', 'u.id, u.picture, u.firstname, u.lastname, u.idnumber', 'u.firstname ASC', '', '', $currentgroup, '', false, true);
/// Get all the recorded responses for this choice
$rawresponses = $DB->get_records('choice_answers', array('choiceid' => $choice->id));
/// Use the responses to move users into the correct column
if ($rawresponses) {
foreach ($rawresponses as $response) {
if (isset($allresponses[0][$response->userid])) { // This person is enrolled and in correct group
$allresponses[0][$response->userid]->timemodified = $response->timemodified;
$allresponses[$response->optionid][$response->userid] = clone($allresponses[0][$response->userid]);
unset($allresponses[0][$response->userid]); // Remove from unanswered column
}
}
}
return $allresponses;
}
/**
* Returns all other caps used in module
*/
function choice_get_extra_capabilities() {
return array('moodle/site:accessallgroups');
}
/**
* @param string $feature FEATURE_xx constant for requested feature
* @return mixed True if module supports feature, null if doesn't know
*/
function choice_supports($feature) {
switch($feature) {
case FEATURE_COMPLETION_TRACKS_VIEWS: return true;
default: return null;
}
}
?>