ILIAS  release_5-1 Revision 5.0.0-5477-g43f3e3fab5f
Public Member Functions | Protected Member Functions | Protected Attributes
ilExPeerReview Class Reference
Modules/Exercise

Exercise peer review. More...

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Public Member Functions

 __construct (ilExAssignment $a_assignment)
 
 hasPeerReviewGroups ()
 
 resetPeerReviews ()
 
 validatePeerReviewGroups ()
 
 getPeerReviewValues ($a_giver_id, $a_peer_id)
 
 getPeerReviewsByGiver ($a_user_id)
 
 getPeerMaskedId ($a_giver_id, $a_peer_id)
 
 getPeerReviewsByPeerId ($a_user_id, $a_only_valid=false)
 
 getAllPeerReviews ($a_only_valid=true)
 
 hasPeerReviewAccess ($a_peer_id)
 
 updatePeerReviewTimestamp ($a_peer_id)
 
 updatePeerReview ($a_peer_id, array $a_values)
 
 countGivenFeedback ($a_validate=true, $a_user_id=null)
 
 getNumberOfMissingFeedbacksForReceived ()
 
 isFeedbackValidForPassed ($a_user_id)
 

Protected Member Functions

 getValidPeerReviewUsers ()
 
 initPeerReviews ()
 
 validatePeerReview (array $a_data)
 
 getMaxPossibleFeedbacks ()
 

Protected Attributes

 $assignment
 
 $assignment_id
 

Detailed Description

Exercise peer review.

Author
Jörg Lützenkirchen luetz.nosp@m.enki.nosp@m.rchen.nosp@m.@lei.nosp@m.fos.c.nosp@m.om

Definition at line 10 of file class.ilExPeerReview.php.

Constructor & Destructor Documentation

◆ __construct()

ilExPeerReview::__construct ( ilExAssignment  $a_assignment)

Definition at line 15 of file class.ilExPeerReview.php.

References ilExAssignment\getId().

16  {
17  $this->assignment = $a_assignment;
18  $this->assignment_id = $a_assignment->getId();
19  }
ilExAssignment\getId
getId()
Get assignment id.
Definition: class.ilExAssignment.php:115
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Member Function Documentation

◆ countGivenFeedback()

ilExPeerReview::countGivenFeedback (   $a_validate = true,
  $a_user_id = null 
)

Definition at line 428 of file class.ilExPeerReview.php.

References $ilDB, $ilUser, $row, and validatePeerReview().

Referenced by getNumberOfMissingFeedbacksForReceived(), and isFeedbackValidForPassed().

429  {
430  global $ilDB, $ilUser;
431 
432  if(!$a_user_id)
433  {
434  $a_user_id = $ilUser->getId();
435  }
436 
437  $cnt = 0;
438 
439  include_once './Services/Rating/classes/class.ilRating.php';
440 
441  $set = $ilDB->query("SELECT *".
442  " FROM exc_assignment_peer".
443  " WHERE ass_id = ".$ilDB->quote($this->assignment_id, "integer").
444  " AND giver_id = ".$ilDB->quote($a_user_id, "integer"));
445  while($row = $ilDB->fetchAssoc($set))
446  {
447  if(!(bool)$a_validate ||
448  $this->validatePeerReview($row))
449  {
450  $cnt++;
451  }
452  }
453 
454  return $cnt;
455  }
ilExPeerReview\validatePeerReview
validatePeerReview(array $a_data)
Definition: class.ilExPeerReview.php:293
$ilUser
global $ilUser
Definition: imgupload.php:15
$ilDB
global $ilDB
Definition: storeScorm2004.php:16
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◆ getAllPeerReviews()

ilExPeerReview::getAllPeerReviews (   $a_only_valid = true)

Definition at line 367 of file class.ilExPeerReview.php.

References $ilDB, $res, $row, $valid, and validatePeerReview().

Referenced by resetPeerReviews(), and validatePeerReviewGroups().

368  {
369  global $ilDB;
370 
371  $res = array();
372 
373  $set = $ilDB->query("SELECT *".
374  " FROM exc_assignment_peer".
375  " WHERE ass_id = ".$ilDB->quote($this->assignment_id, "integer").
376  " ORDER BY peer_id");
377  while($row = $ilDB->fetchAssoc($set))
378  {
379  $valid = $this->validatePeerReview($row);
380  if(!$a_only_valid ||
381  $valid)
382  {
383  $res[$row["peer_id"]][$row["giver_id"]] = $valid;
384  }
385  }
386 
387  return $res;
388  }
$valid
$valid
Definition: dummy_client.php:53
ilExPeerReview\validatePeerReview
validatePeerReview(array $a_data)
Definition: class.ilExPeerReview.php:293
$ilDB
global $ilDB
Definition: storeScorm2004.php:16
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◆ getMaxPossibleFeedbacks()

ilExPeerReview::getMaxPossibleFeedbacks ( )
protected

Definition at line 457 of file class.ilExPeerReview.php.

References $ilDB.

Referenced by getNumberOfMissingFeedbacksForReceived(), and isFeedbackValidForPassed().

458  {
459  global $ilDB;
460 
461  // check if number of returned assignments is lower than assignment peer min
462  $set = $ilDB->query("SELECT COUNT(DISTINCT(user_id)) cnt".
463  " FROM exc_returned".
464  " WHERE ass_id = ".$ilDB->quote($this->assignment_id, "integer"));
465  $cnt = $ilDB->fetchAssoc($set);
466  $cnt = (int)$cnt["cnt"];
467  return $cnt-1;
468  }
$ilDB
global $ilDB
Definition: storeScorm2004.php:16
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◆ getNumberOfMissingFeedbacksForReceived()

ilExPeerReview::getNumberOfMissingFeedbacksForReceived ( )

Definition at line 470 of file class.ilExPeerReview.php.

References countGivenFeedback(), and getMaxPossibleFeedbacks().

471  {
472  $max = $this->getMaxPossibleFeedbacks();
473 
474  // #16160 - forever alone
475  if(!$max)
476  {
477  return;
478  }
479 
480  // are all required or just 1?
481  if(!$this->assignment->getPeerReviewSimpleUnlock())
482  {
483  $needed = $this->assignment->getPeerReviewMin();
484  }
485  else
486  {
487  $needed = 1;
488  }
489 
490  // there could be less participants than stated in the min required setting
491  $min = min($max, $needed);
492 
493  return max(0, $min-$this->countGivenFeedback());
494  }
ilExPeerReview\countGivenFeedback
countGivenFeedback($a_validate=true, $a_user_id=null)
Definition: class.ilExPeerReview.php:428
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◆ getPeerMaskedId()

ilExPeerReview::getPeerMaskedId (   $a_giver_id,
  $a_peer_id 
)

Definition at line 282 of file class.ilExPeerReview.php.

References getPeerReviewsByGiver().

283  {
284  foreach($this->getPeerReviewsByGiver($a_giver_id) as $idx => $peer)
285  {
286  if($peer["peer_id"] == $a_peer_id)
287  {
288  return $peer["seq"];
289  }
290  }
291  }
ilExPeerReview\getPeerReviewsByGiver
getPeerReviewsByGiver($a_user_id)
Definition: class.ilExPeerReview.php:258
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◆ getPeerReviewsByGiver()

ilExPeerReview::getPeerReviewsByGiver (   $a_user_id)

Definition at line 258 of file class.ilExPeerReview.php.

References $ilDB, $res, $row, and initPeerReviews().

Referenced by getPeerMaskedId(), and getPeerReviewValues().

259  {
260  global $ilDB;
261 
262  $res = array();
263 
264  if($this->initPeerReviews())
265  {
266  $idx = 0;
267  $set = $ilDB->query("SELECT *".
268  " FROM exc_assignment_peer".
269  " WHERE giver_id = ".$ilDB->quote($a_user_id, "integer").
270  " AND ass_id = ".$ilDB->quote($this->assignment_id, "integer").
271  " ORDER BY peer_id");
272  while($row = $ilDB->fetchAssoc($set))
273  {
274  $row["seq"] = ++$idx;
275  $res[] = $row;
276  }
277  }
278 
279  return $res;
280  }
$ilDB
global $ilDB
Definition: storeScorm2004.php:16
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◆ getPeerReviewsByPeerId()

ilExPeerReview::getPeerReviewsByPeerId (   $a_user_id,
  $a_only_valid = false 
)

Definition at line 340 of file class.ilExPeerReview.php.

References $ilDB, $res, $row, and validatePeerReview().

341  {
342  global $ilDB;
343 
344  $res = array();
345 
346  $idx = 0;
347  $set = $ilDB->query("SELECT *".
348  " FROM exc_assignment_peer".
349  " WHERE peer_id = ".$ilDB->quote($a_user_id, "integer").
350  " AND ass_id = ".$ilDB->quote($this->assignment_id, "integer").
351  " ORDER BY peer_id");
352  while($row = $ilDB->fetchAssoc($set))
353  {
354  if(!$a_only_valid ||
355  $this->validatePeerReview($row))
356  {
357  // this would be correct but rather senseless
358  // $row["seq"] = $this->getPeerMaskedId($row["giver_id"], $a_user_id);
359  $row["seq"] = ++$idx;
360  $res[] = $row;
361  }
362  }
363 
364  return $res;
365  }
ilExPeerReview\validatePeerReview
validatePeerReview(array $a_data)
Definition: class.ilExPeerReview.php:293
$ilDB
global $ilDB
Definition: storeScorm2004.php:16
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◆ getPeerReviewValues()

ilExPeerReview::getPeerReviewValues (   $a_giver_id,
  $a_peer_id 
)

Definition at line 231 of file class.ilExPeerReview.php.

References $data, and getPeerReviewsByGiver().

232  {
233  $peer = null;
234  foreach($this->getPeerReviewsByGiver($a_giver_id) as $item)
235  {
236  if($item["peer_id"] == $a_peer_id)
237  {
238  $peer = $item;
239  }
240  }
241  if(!$peer)
242  {
243  return;
244  }
245  $data = $peer["pcomment"];
246  if($data)
247  {
248  $items = @unserialize($data);
249  if(!is_array($items))
250  {
251  // v1 - pcomment == text
252  $items = array("text"=>$data);
253  }
254  return $items;
255  }
256  }
$data
$data
Definition: example_011.php:126
ilExPeerReview\getPeerReviewsByGiver
getPeerReviewsByGiver($a_user_id)
Definition: class.ilExPeerReview.php:258
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◆ getValidPeerReviewUsers()

ilExPeerReview::getValidPeerReviewUsers ( )
protected

Definition at line 32 of file class.ilExPeerReview.php.

References $ilDB, and $row.

Referenced by initPeerReviews(), and validatePeerReviewGroups().

33  {
34  global $ilDB;
35 
36  $user_ids = array();
37 
38  // returned / assigned ?!
39  $set = $ilDB->query("SELECT DISTINCT(user_id)".
40  " FROM exc_returned".
41  " WHERE ass_id = ".$ilDB->quote($this->assignment_id, "integer").
42  " AND (filename IS NOT NULL OR atext IS NOT NULL)");
43  while($row = $ilDB->fetchAssoc($set))
44  {
45  $user_ids[] = $row["user_id"];
46  }
47 
48  return $user_ids;
49  }
$ilDB
global $ilDB
Definition: storeScorm2004.php:16
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◆ hasPeerReviewAccess()

ilExPeerReview::hasPeerReviewAccess (   $a_peer_id)

Definition at line 390 of file class.ilExPeerReview.php.

References $ilDB, $ilUser, and $row.

391  {
392  global $ilDB, $ilUser;
393 
394  $set = $ilDB->query("SELECT ass_id".
395  " FROM exc_assignment_peer".
396  " WHERE giver_id = ".$ilDB->quote($ilUser->getId(), "integer").
397  " AND peer_id = ".$ilDB->quote($a_peer_id, "integer").
398  " AND ass_id = ".$ilDB->quote($this->assignment_id, "integer"));
399  $row = $ilDB->fetchAssoc($set);
400  return (bool)$row["ass_id"];
401  }
$ilUser
global $ilUser
Definition: imgupload.php:15
$ilDB
global $ilDB
Definition: storeScorm2004.php:16

◆ hasPeerReviewGroups()

ilExPeerReview::hasPeerReviewGroups ( )

Definition at line 21 of file class.ilExPeerReview.php.

References $ilDB.

Referenced by initPeerReviews(), resetPeerReviews(), and validatePeerReviewGroups().

22  {
23  global $ilDB;
24 
25  $set = $ilDB->query("SELECT count(*) cnt".
26  " FROM exc_assignment_peer".
27  " WHERE ass_id = ".$ilDB->quote($this->assignment_id, "integer"));
28  $cnt = $ilDB->fetchAssoc($set);
29  return (bool)$cnt["cnt"];
30  }
$ilDB
global $ilDB
Definition: storeScorm2004.php:16
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◆ initPeerReviews()

ilExPeerReview::initPeerReviews ( )
protected

Definition at line 51 of file class.ilExPeerReview.php.

References $ilDB, getValidPeerReviewUsers(), and hasPeerReviewGroups().

Referenced by getPeerReviewsByGiver().

52  {
53  global $ilDB;
54 
55  if(!$this->hasPeerReviewGroups())
56  {
57  $user_ids = $this->getValidPeerReviewUsers();
58 
59  // forever alone
60  if(sizeof($user_ids) < 2)
61  {
62  return false;
63  }
64 
65  $rater_ids = $user_ids;
66  $matrix = array();
67 
68  $max = min(sizeof($user_ids)-1, $this->assignment->getPeerReviewMin());
69  for($loop = 0; $loop < $max; $loop++)
70  {
71  $run_ids = array_combine($user_ids, $user_ids);
72 
73  foreach($rater_ids as $rater_id)
74  {
75  $possible_peer_ids = $run_ids;
76 
77  // may not rate himself
78  unset($possible_peer_ids[$rater_id]);
79 
80  // already has linked peers
81  if(array_key_exists($rater_id, $matrix))
82  {
83  $possible_peer_ids = array_diff($possible_peer_ids, $matrix[$rater_id]);
84  }
85 
86  // #15665 / #15883
87  if(!sizeof($possible_peer_ids))
88  {
89  // no more possible peers left? start over with all valid users
90  $run_ids = array_combine($user_ids, $user_ids);
91 
92  // see above
93  $possible_peer_ids = $run_ids;
94 
95  // may not rate himself
96  unset($possible_peer_ids[$rater_id]);
97 
98  // already has linked peers
99  if(array_key_exists($rater_id, $matrix))
100  {
101  $possible_peer_ids = array_diff($possible_peer_ids, $matrix[$rater_id]);
102  }
103  }
104 
105  // #14947
106  if(sizeof($possible_peer_ids))
107  {
108  $peer_id = array_rand($possible_peer_ids);
109  if(!array_key_exists($rater_id, $matrix))
110  {
111  $matrix[$rater_id] = array();
112  }
113  $matrix[$rater_id][] = $peer_id;
114  }
115 
116  // remove peer_id from possible ids in this run
117  unset($run_ids[$peer_id]);
118  }
119  }
120 
121  foreach($matrix as $rater_id => $peer_ids)
122  {
123  foreach($peer_ids as $peer_id)
124  {
125  $ilDB->manipulate("INSERT INTO exc_assignment_peer".
126  " (ass_id, giver_id, peer_id)".
127  " VALUES (".$ilDB->quote($this->assignment_id, "integer").
128  ", ".$ilDB->quote($rater_id, "integer").
129  ", ".$ilDB->quote($peer_id, "integer").")");
130  }
131  }
132 
133  }
134  return true;
135  }
$ilDB
global $ilDB
Definition: storeScorm2004.php:16
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◆ isFeedbackValidForPassed()

ilExPeerReview::isFeedbackValidForPassed (   $a_user_id)

Definition at line 496 of file class.ilExPeerReview.php.

References countGivenFeedback(), getMaxPossibleFeedbacks(), ilExAssignment\PEER_REVIEW_VALID_ALL, ilExAssignment\PEER_REVIEW_VALID_NONE, and ilExAssignment\PEER_REVIEW_VALID_ONE.

497  {
498  // peer feedback is not required for passing
499  if($this->assignment->getPeerReviewValid() == ilExAssignment::PEER_REVIEW_VALID_NONE)
500  {
501  return true;
502  }
503 
504  // #16227 - no processing before reaching the peer review period
505  if(!$this->assignment->afterDeadlineStrict())
506  {
507  return false;
508  }
509 
510  // forever alone - should be valid
511  $max = $this->getMaxPossibleFeedbacks();
512  if(!$max)
513  {
514  return true;
515  }
516 
517  $no_of_feedbacks = $this->countGivenFeedback(true, $a_user_id);
518 
519  switch($this->assignment->getPeerReviewValid())
520  {
521  case ilExAssignment::PEER_REVIEW_VALID_ONE:
522  return (bool)$no_of_feedbacks;
523 
524  case ilExAssignment::PEER_REVIEW_VALID_ALL:
525  // there could be less participants than stated in the min required setting
526  $min = min($max, $this->assignment->getPeerReviewMin());
527 
528  return (($min-$no_of_feedbacks) < 1);
529  }
530  }
ilExPeerReview\countGivenFeedback
countGivenFeedback($a_validate=true, $a_user_id=null)
Definition: class.ilExPeerReview.php:428
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◆ resetPeerReviews()

ilExPeerReview::resetPeerReviews ( )

Definition at line 137 of file class.ilExPeerReview.php.

References $ilDB, getAllPeerReviews(), and hasPeerReviewGroups().

138  {
139  global $ilDB;
140 
141  $all = array();
142 
143  if($this->hasPeerReviewGroups())
144  {
145  foreach($this->getAllPeerReviews(false) as $peer_id => $reviews)
146  {
147  foreach(array_keys($reviews) as $giver_id)
148  {
149  $all[] = $giver_id;
150 
151  foreach($this->assignment->getPeerReviewCriteriaCatalogueItems() as $crit)
152  {
153  $crit->setPeerReviewContext($this->assignment, $giver_id, $peer_id);
154  $crit->resetReview();
155  }
156  }
157  }
158 
159  // peer groups
160  $ilDB->manipulate("DELETE FROM exc_assignment_peer".
161  " WHERE ass_id = ".$ilDB->quote($this->assignment_id, "integer"));
162  }
163 
164  return $all;
165  }
ilExPeerReview\getAllPeerReviews
getAllPeerReviews($a_only_valid=true)
Definition: class.ilExPeerReview.php:367
$ilDB
global $ilDB
Definition: storeScorm2004.php:16
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◆ updatePeerReview()

ilExPeerReview::updatePeerReview (   $a_peer_id,
array  $a_values 
)

Definition at line 414 of file class.ilExPeerReview.php.

References $ilDB, $ilUser, and ilUtil\now().

415  {
416  global $ilDB, $ilUser;
417 
418  $sql = "UPDATE exc_assignment_peer".
419  " SET tstamp = ".$ilDB->quote(ilUtil::now(), "timestamp").
420  ",pcomment = ".$ilDB->quote(serialize($a_values), "text").
421  " WHERE giver_id = ".$ilDB->quote($ilUser->getId(), "integer").
422  " AND peer_id = ".$ilDB->quote($a_peer_id, "integer").
423  " AND ass_id = ".$ilDB->quote($this->assignment_id, "integer");
424 
425  $ilDB->manipulate($sql);
426  }
ilUtil\now
static now()
Return current timestamp in Y-m-d H:i:s format.
Definition: class.ilUtil.php:4239
$ilUser
global $ilUser
Definition: imgupload.php:15
$ilDB
global $ilDB
Definition: storeScorm2004.php:16
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◆ updatePeerReviewTimestamp()

ilExPeerReview::updatePeerReviewTimestamp (   $a_peer_id)

Definition at line 403 of file class.ilExPeerReview.php.

References $ilDB, $ilUser, and ilUtil\now().

404  {
405  global $ilDB, $ilUser;
406 
407  $ilDB->manipulate("UPDATE exc_assignment_peer".
408  " SET tstamp = ".$ilDB->quote(ilUtil::now(), "timestamp").
409  " WHERE giver_id = ".$ilDB->quote($ilUser->getId(), "integer").
410  " AND peer_id = ".$ilDB->quote($a_peer_id, "integer").
411  " AND ass_id = ".$ilDB->quote($this->assignment_id, "integer"));
412  }
ilUtil\now
static now()
Return current timestamp in Y-m-d H:i:s format.
Definition: class.ilUtil.php:4239
$ilUser
global $ilUser
Definition: imgupload.php:15
$ilDB
global $ilDB
Definition: storeScorm2004.php:16
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◆ validatePeerReview()

ilExPeerReview::validatePeerReview ( array  $a_data)
protected

Definition at line 293 of file class.ilExPeerReview.php.

References $data.

Referenced by countGivenFeedback(), getAllPeerReviews(), and getPeerReviewsByPeerId().

294  {
295  $all_empty = true;
296 
297  // see getPeerReviewValues()
298  $values = null;
299  $data = $a_data["pcomment"];
300  if($data)
301  {
302  $values = @unserialize($data);
303  if(!is_array($values))
304  {
305  // v1 - pcomment == text
306  $values = array("text"=>$data);
307  }
308  }
309 
310  /* #18491 - values can be empty, text is optional (rating/file values are handled internally in criteria)
311  if(!$values)
312  {
313  return false;
314  }
315  */
316 
317  foreach($this->assignment->getPeerReviewCriteriaCatalogueItems() as $crit)
318  {
319  $crit_id = $crit->getId()
320  ? $crit->getId()
321  : $crit->getType();
322  $crit->setPeerReviewContext(
323  $this->assignment,
324  $a_data["giver_id"],
325  $a_data["peer_id"]
326  );
327  if(!$crit->validate($values[$crit_id]))
328  {
329  return false;
330  }
331  if($crit->hasValue($values[$crit_id]))
332  {
333  $all_empty = false;
334  }
335  }
336 
337  return !$all_empty;
338  }
$data
$data
Definition: example_011.php:126
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◆ validatePeerReviewGroups()

ilExPeerReview::validatePeerReviewGroups ( )

Definition at line 167 of file class.ilExPeerReview.php.

References $valid, ilExerciseMembers\_getMembers(), getAllPeerReviews(), getValidPeerReviewUsers(), and hasPeerReviewGroups().

168  {
169  if($this->hasPeerReviewGroups())
170  {
171  include_once "./Modules/Exercise/classes/class.ilExerciseMembers.php";
172  $all_exc = ilExerciseMembers::_getMembers($this->assignment->getExerciseId());
173  $all_valid = $this->getValidPeerReviewUsers(); // only returned
174 
175  $peer_ids = $invalid_peer_ids = $invalid_giver_ids = $all_reviews = array();
176  foreach($this->getAllPeerReviews(false) as $peer_id => $reviews)
177  {
178  $peer_ids[] = $peer_id;
179 
180  if(!in_array($peer_id, $all_valid) ||
181  !in_array($peer_id, $all_exc))
182  {
183  $invalid_peer_ids[] = $peer_id;
184  }
185  foreach($reviews as $giver_id => $valid)
186  {
187  if(!in_array($giver_id, $all_valid) ||
188  !in_array($peer_id, $all_exc))
189  {
190  $invalid_giver_ids[] = $giver_id;
191  }
192  else
193  {
194  $all_reviews[$peer_id][$giver_id] = $valid;
195  }
196  }
197  }
198  $invalid_giver_ids = array_unique($invalid_giver_ids);
199 
200  $missing_user_ids = array();
201  foreach($all_valid as $user_id)
202  {
203  // a missing peer is also a missing giver
204  if(!in_array($user_id, $peer_ids))
205  {
206  $missing_user_ids[] = $user_id;
207  }
208  }
209 
210  $not_returned_ids = array();
211  foreach($all_exc as $user_id)
212  {
213  if(!in_array($user_id, $all_valid))
214  {
215  $not_returned_ids[] = $user_id;
216  }
217  }
218 
219  return array(
220  "invalid" => (sizeof($missing_user_ids) ||
221  sizeof($invalid_peer_ids) ||
222  sizeof($invalid_giver_ids)),
223  "missing_user_ids" => $missing_user_ids,
224  "not_returned_ids" => $not_returned_ids,
225  "invalid_peer_ids" => $invalid_peer_ids,
226  "invalid_giver_ids" => $invalid_giver_ids,
227  "reviews" => $all_reviews);
228  }
229  }
$valid
$valid
Definition: dummy_client.php:53
ilExPeerReview\getAllPeerReviews
getAllPeerReviews($a_only_valid=true)
Definition: class.ilExPeerReview.php:367
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Field Documentation

◆ $assignment

ilExPeerReview::$assignment
protected

Definition at line 12 of file class.ilExPeerReview.php.

◆ $assignment_id

ilExPeerReview::$assignment_id
protected

Definition at line 13 of file class.ilExPeerReview.php.

The documentation for this class was generated from the following file: