MDL-44894 question editing: fix validation with odd permissions
[moodle.git] / question / type / edit_question_form.php
CommitLineData
aeb15530 1<?php
fe6ce234
DC
2// This file is part of Moodle - http://moodle.org/
3//
4// Moodle is free software: you can redistribute it and/or modify
5// it under the terms of the GNU General Public License as published by
6// the Free Software Foundation, either version 3 of the License, or
7// (at your option) any later version.
8//
9// Moodle is distributed in the hope that it will be useful,
10// but WITHOUT ANY WARRANTY; without even the implied warranty of
11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12// GNU General Public License for more details.
13//
14// You should have received a copy of the GNU General Public License
15// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
16
36703ed7 17/**
18 * A base class for question editing forms.
19 *
7764183a 20 * @package moodlecore
2b7da645 21 * @subpackage questiontypes
b04a4319
TH
22 * @copyright 2006 The Open University
23 * @license http://www.gnu.org/copyleft/gpl.html GNU Public License
fe6ce234 24 */
36703ed7 25
2b7da645 26
a17b297d
TH
27defined('MOODLE_INTERNAL') || die();
28
603bd001
PS
29global $CFG;
30require_once($CFG->libdir.'/formslib.php');
31
a17b297d 32
72553162
TH
33abstract class question_wizard_form extends moodleform {
34 /**
35 * Add all the hidden form fields used by question/question.php.
36 */
37 protected function add_hidden_fields() {
38 $mform = $this->_form;
39
40 $mform->addElement('hidden', 'id');
41 $mform->setType('id', PARAM_INT);
42
43 $mform->addElement('hidden', 'inpopup');
44 $mform->setType('inpopup', PARAM_INT);
45
46 $mform->addElement('hidden', 'cmid');
47 $mform->setType('cmid', PARAM_INT);
48
49 $mform->addElement('hidden', 'courseid');
50 $mform->setType('courseid', PARAM_INT);
51
52 $mform->addElement('hidden', 'returnurl');
53 $mform->setType('returnurl', PARAM_LOCALURL);
54
55 $mform->addElement('hidden', 'scrollpos');
56 $mform->setType('scrollpos', PARAM_INT);
57
58 $mform->addElement('hidden', 'appendqnumstring');
59 $mform->setType('appendqnumstring', PARAM_ALPHA);
60 }
61}
62
36703ed7 63/**
64 * Form definition base class. This defines the common fields that
65 * all question types need. Question types should define their own
66 * class that inherits from this one, and implements the definition_inner()
67 * method.
271e6dec 68 *
7764183a
TH
69 * @copyright 2006 The Open University
70 * @license http://www.gnu.org/copyleft/gpl.html GNU Public License
36703ed7 71 */
72553162 72abstract class question_edit_form extends question_wizard_form {
2b7da645
TH
73 const DEFAULT_NUM_HINTS = 2;
74
271ffe3f 75 /**
76 * Question object with options and answers already loaded by get_question_options
77 * Be careful how you use this it is needed sometimes to set up the structure of the
32db0d42 78 * form in definition_inner but data is always loaded into the form with set_data.
271ffe3f 79 * @var object
80 */
2b7da645
TH
81 protected $question;
82
83 protected $contexts;
84 protected $category;
85 protected $categorycontext;
271e6dec 86
fe6ce234
DC
87 /** @var object current context */
88 public $context;
89 /** @var array html editor options */
90 public $editoroptions;
91 /** @var array options to preapre draft area */
92 public $fileoptions;
93 /** @var object instance of question type */
94 public $instance;
95
2b7da645 96 public function __construct($submiturl, $question, $category, $contexts, $formeditable = true) {
fe6ce234 97 global $DB;
271e6dec 98
271ffe3f 99 $this->question = $question;
271e6dec 100 $this->contexts = $contexts;
101
eaeb6b51
TH
102 $record = $DB->get_record('question_categories',
103 array('id' => $question->category), 'contextid');
d197ea43 104 $this->context = context::instance_by_id($record->contextid);
fe6ce234 105
eaeb6b51 106 $this->editoroptions = array('subdirs' => 1, 'maxfiles' => EDITOR_UNLIMITED_FILES,
0c0dfa8f 107 'context' => $this->context);
41dcc2a5 108 $this->fileoptions = array('subdirs' => 1, 'maxfiles' => -1, 'maxbytes' => -1);
fe6ce234 109
271e6dec 110 $this->category = $category;
d197ea43 111 $this->categorycontext = context::instance_by_id($category->contextid);
271e6dec 112
2b7da645 113 parent::__construct($submiturl, null, 'post', '', null, $formeditable);
271ffe3f 114 }
8e652f02 115
36703ed7 116 /**
117 * Build the form definition.
1d284fbd 118 *
295043c2 119 * This adds all the form fields that the default question type supports.
36703ed7 120 * If your question type does not support all these fields, then you can
121 * override this method and remove the ones you don't want with $mform->removeElement().
122 */
c7df5006 123 protected function definition() {
8011be18 124 global $COURSE, $CFG, $DB, $PAGE;
1d284fbd 125
36703ed7 126 $qtype = $this->qtype();
f4fe3968 127 $langfile = "qtype_{$qtype}";
1d284fbd 128
f9b0500f 129 $mform = $this->_form;
36703ed7 130
131 // Standard fields at the start of the form.
271ffe3f 132 $mform->addElement('header', 'generalheader', get_string("general", 'form'));
1d284fbd 133
2b7da645 134 if (!isset($this->question->id)) {
76cf77e4
TH
135 if (!empty($this->question->formoptions->mustbeusable)) {
136 $contexts = $this->contexts->having_add_and_use();
137 } else {
138 $contexts = $this->contexts->having_cap('moodle/question:add');
139 }
140
c7218aef 141 // Adding question.
2b7da645 142 $mform->addElement('questioncategory', 'category', get_string('category', 'question'),
76cf77e4 143 array('contexts' => $contexts));
eaeb6b51
TH
144 } else if (!($this->question->formoptions->canmove ||
145 $this->question->formoptions->cansaveasnew)) {
5d548d3e 146 // Editing question with no permission to move from category.
2b7da645 147 $mform->addElement('questioncategory', 'category', get_string('category', 'question'),
271e6dec 148 array('contexts' => array($this->categorycontext)));
f276267d
TH
149 $mform->addElement('hidden', 'usecurrentcat', 1);
150 $mform->setType('usecurrentcat', PARAM_BOOL);
151 $mform->setConstant('usecurrentcat', 1);
271e6dec 152 } else {
c7218aef 153 // Editing question with permission to move from category or save as new q.
271e6dec 154 $currentgrp = array();
eaeb6b51
TH
155 $currentgrp[0] = $mform->createElement('questioncategory', 'category',
156 get_string('categorycurrent', 'question'),
271e6dec 157 array('contexts' => array($this->categorycontext)));
eaeb6b51
TH
158 if ($this->question->formoptions->canedit ||
159 $this->question->formoptions->cansaveasnew) {
c7218aef 160 // Not move only form.
eaeb6b51
TH
161 $currentgrp[1] = $mform->createElement('checkbox', 'usecurrentcat', '',
162 get_string('categorycurrentuse', 'question'));
271e6dec 163 $mform->setDefault('usecurrentcat', 1);
164 }
165 $currentgrp[0]->freeze();
166 $currentgrp[0]->setPersistantFreeze(false);
eaeb6b51
TH
167 $mform->addGroup($currentgrp, 'currentgrp',
168 get_string('categorycurrent', 'question'), null, false);
271e6dec 169
eaeb6b51
TH
170 $mform->addElement('questioncategory', 'categorymoveto',
171 get_string('categorymoveto', 'question'),
271e6dec 172 array('contexts' => array($this->categorycontext)));
eaeb6b51
TH
173 if ($this->question->formoptions->canedit ||
174 $this->question->formoptions->cansaveasnew) {
c7218aef 175 // Not move only form.
271e6dec 176 $mform->disabledIf('categorymoveto', 'usecurrentcat', 'checked');
177 }
178 }
375ed78a 179
eaeb6b51 180 $mform->addElement('text', 'name', get_string('questionname', 'question'),
b9b38ea7 181 array('size' => 50, 'maxlength' => 255));
271ffe3f 182 $mform->setType('name', PARAM_TEXT);
36703ed7 183 $mform->addRule('name', null, 'required', null, 'client');
1d284fbd 184
2b7da645 185 $mform->addElement('editor', 'questiontext', get_string('questiontext', 'question'),
0c0dfa8f 186 array('rows' => 15), $this->editoroptions);
36703ed7 187 $mform->setType('questiontext', PARAM_RAW);
363f8224 188 $mform->addRule('questiontext', null, 'required', null, 'client');
1d284fbd 189
2b7da645 190 $mform->addElement('text', 'defaultmark', get_string('defaultmark', 'question'),
d2acbd1a 191 array('size' => 7));
7664182d 192 $mform->setType('defaultmark', PARAM_FLOAT);
2b7da645
TH
193 $mform->setDefault('defaultmark', 1);
194 $mform->addRule('defaultmark', null, 'required', null, 'client');
36703ed7 195
2b7da645 196 $mform->addElement('editor', 'generalfeedback', get_string('generalfeedback', 'question'),
0c0dfa8f 197 array('rows' => 10), $this->editoroptions);
36703ed7 198 $mform->setType('generalfeedback', PARAM_RAW);
2b7da645 199 $mform->addHelpButton('generalfeedback', 'generalfeedback', 'question');
1d284fbd 200
36703ed7 201 // Any questiontype specific fields.
202 $this->definition_inner($mform);
203
c599a682 204 if (!empty($CFG->usetags)) {
205 $mform->addElement('header', 'tagsheader', get_string('tags'));
206 $mform->addElement('tags', 'tags', get_string('tags'));
207 }
208
2b7da645 209 if (!empty($this->question->id)) {
eaeb6b51
TH
210 $mform->addElement('header', 'createdmodifiedheader',
211 get_string('createdmodifiedheader', 'question'));
7f389342 212 $a = new stdClass();
2b7da645 213 if (!empty($this->question->createdby)) {
271e6dec 214 $a->time = userdate($this->question->timecreated);
eaeb6b51
TH
215 $a->user = fullname($DB->get_record(
216 'user', array('id' => $this->question->createdby)));
271e6dec 217 } else {
218 $a->time = get_string('unknown', 'question');
219 $a->user = get_string('unknown', 'question');
220 }
eaeb6b51
TH
221 $mform->addElement('static', 'created', get_string('created', 'question'),
222 get_string('byandon', 'question', $a));
2b7da645 223 if (!empty($this->question->modifiedby)) {
7f389342 224 $a = new stdClass();
271e6dec 225 $a->time = userdate($this->question->timemodified);
eaeb6b51
TH
226 $a->user = fullname($DB->get_record(
227 'user', array('id' => $this->question->modifiedby)));
228 $mform->addElement('static', 'modified', get_string('modified', 'question'),
229 get_string('byandon', 'question', $a));
271e6dec 230 }
231 }
232
72553162 233 $this->add_hidden_fields();
36703ed7 234
72553162
TH
235 $mform->addElement('hidden', 'qtype');
236 $mform->setType('qtype', PARAM_ALPHA);
fa583f5f 237
e0c41591
K
238 $mform->addElement('hidden', 'makecopy');
239 $mform->setType('makecopy', PARAM_INT);
240
375ed78a 241 $buttonarray = array();
8011be18 242 $buttonarray[] = $mform->createElement('submit', 'updatebutton',
7756e2bc 243 get_string('savechangesandcontinueediting', 'question'));
8011be18
TH
244 if ($this->can_preview()) {
245 $previewlink = $PAGE->get_renderer('core_question')->question_preview_link(
246 $this->question->id, $this->context, true);
7756e2bc 247 $buttonarray[] = $mform->createElement('static', 'previewlink', '', $previewlink);
375ed78a 248 }
7756e2bc 249
8011be18
TH
250 $mform->addGroup($buttonarray, 'updatebuttonar', '', array(' '), false);
251 $mform->closeHeaderBefore('updatebuttonar');
7756e2bc
K
252
253 $this->add_action_buttons(true, get_string('savechanges'));
271e6dec 254
435d3279 255 if ((!empty($this->question->id)) && (!($this->question->formoptions->canedit ||
eaeb6b51 256 $this->question->formoptions->cansaveasnew))) {
271e6dec 257 $mform->hardFreezeAllVisibleExcept(array('categorymoveto', 'buttonar', 'currentgrp'));
258 }
36703ed7 259 }
fa583f5f 260
36703ed7 261 /**
262 * Add any question-type specific form fields.
1d284fbd 263 *
264 * @param object $mform the form being built.
36703ed7 265 */
2b7da645 266 protected function definition_inner($mform) {
36703ed7 267 // By default, do nothing.
268 }
1d284fbd 269
8011be18
TH
270 /**
271 * Is the question being edited in a state where it can be previewed?
272 * @return bool whether to show the preview link.
273 */
274 protected function can_preview() {
275 return empty($this->question->beingcopied) && !empty($this->question->id) &&
276 $this->question->formoptions->canedit;
277 }
278
2aef1fe5 279 /**
280 * Get the list of form elements to repeat, one for each answer.
281 * @param object $mform the form being built.
282 * @param $label the label to use for each option.
283 * @param $gradeoptions the possible grades for each answer.
284 * @param $repeatedoptions reference to array of repeated options to fill
eaeb6b51
TH
285 * @param $answersoption reference to return the name of $question->options
286 * field holding an array of answers
2aef1fe5 287 * @return array of form fields.
288 */
2a6c5c52 289 protected function get_per_answer_fields($mform, $label, $gradeoptions,
eaeb6b51 290 &$repeatedoptions, &$answersoption) {
2aef1fe5 291 $repeated = array();
c7218aef
CC
292 $answeroptions = array();
293 $answeroptions[] = $mform->createElement('text', 'answer',
294 $label, array('size' => 40));
295 $answeroptions[] = $mform->createElement('select', 'fraction',
eaeb6b51 296 get_string('grade'), $gradeoptions);
c7218aef
CC
297 $repeated[] = $mform->createElement('group', 'answeroptions',
298 $label, $answeroptions, null, false);
eaeb6b51
TH
299 $repeated[] = $mform->createElement('editor', 'feedback',
300 get_string('feedback', 'question'), array('rows' => 5), $this->editoroptions);
2aef1fe5 301 $repeatedoptions['answer']['type'] = PARAM_RAW;
302 $repeatedoptions['fraction']['default'] = 0;
303 $answersoption = 'answers';
304 return $repeated;
305 }
306
307 /**
308 * Add a set of form fields, obtained from get_per_answer_fields, to the form,
309 * one for each existing answer, with some blanks for some new ones.
310 * @param object $mform the form being built.
311 * @param $label the label to use for each option.
312 * @param $gradeoptions the possible grades for each answer.
eaeb6b51
TH
313 * @param $minoptions the minimum number of answer blanks to display.
314 * Default QUESTION_NUMANS_START.
2aef1fe5 315 * @param $addoptions the number of answer blanks to add. Default QUESTION_NUMANS_ADD.
316 */
eaeb6b51
TH
317 protected function add_per_answer_fields(&$mform, $label, $gradeoptions,
318 $minoptions = QUESTION_NUMANS_START, $addoptions = QUESTION_NUMANS_ADD) {
c7218aef
CC
319 $mform->addElement('header', 'answerhdr',
320 get_string('answers', 'question'), '');
321 $mform->setExpanded('answerhdr', 1);
2aef1fe5 322 $answersoption = '';
323 $repeatedoptions = array();
eaeb6b51
TH
324 $repeated = $this->get_per_answer_fields($mform, $label, $gradeoptions,
325 $repeatedoptions, $answersoption);
2aef1fe5 326
2b7da645 327 if (isset($this->question->options)) {
c3c65f41 328 $repeatsatstart = count($this->question->options->$answersoption);
2aef1fe5 329 } else {
c3c65f41 330 $repeatsatstart = $minoptions;
2aef1fe5 331 }
332
eaeb6b51
TH
333 $this->repeat_elements($repeated, $repeatsatstart, $repeatedoptions,
334 'noanswers', 'addanswers', $addoptions,
c7218aef 335 $this->get_more_choices_string(), true);
55748620
TH
336 }
337
338 /**
339 * Language string to use for 'Add {no} more {whatever we call answers}'.
340 */
341 protected function get_more_choices_string() {
342 return get_string('addmorechoiceblanks', 'question');
2aef1fe5 343 }
344
2b7da645
TH
345 protected function add_combined_feedback_fields($withshownumpartscorrect = false) {
346 $mform = $this->_form;
347
eaeb6b51
TH
348 $mform->addElement('header', 'combinedfeedbackhdr',
349 get_string('combinedfeedback', 'question'));
2b7da645 350
eaeb6b51
TH
351 $fields = array('correctfeedback', 'partiallycorrectfeedback', 'incorrectfeedback');
352 foreach ($fields as $feedbackname) {
086cced7
CC
353 $element = $mform->addElement('editor', $feedbackname,
354 get_string($feedbackname, 'question'),
2b7da645
TH
355 array('rows' => 5), $this->editoroptions);
356 $mform->setType($feedbackname, PARAM_RAW);
086cced7 357 // Using setValue() as setDefault() does not work for the editor class.
e0c41591 358 $element->setValue(array('text' => get_string($feedbackname.'default', 'question')));
2b7da645
TH
359
360 if ($withshownumpartscorrect && $feedbackname == 'partiallycorrectfeedback') {
f7094147 361 $mform->addElement('advcheckbox', 'shownumcorrect',
eaeb6b51 362 get_string('options', 'question'),
d5ffb789 363 get_string('shownumpartscorrectwhenfinished', 'question'));
f0a64f01 364 $mform->setDefault('shownumcorrect', true);
2b7da645
TH
365 }
366 }
367 }
368
6dbc3460
CC
369 /**
370 * Create the form elements required by one hint.
371 * @param string $withclearwrong whether this quesiton type uses the 'Clear wrong' option on hints.
372 * @param string $withshownumpartscorrect whether this quesiton type uses the 'Show num parts correct' option on hints.
373 * @return array form field elements for one hint.
374 */
2b7da645
TH
375 protected function get_hint_fields($withclearwrong = false, $withshownumpartscorrect = false) {
376 $mform = $this->_form;
377
6dbc3460 378 $repeatedoptions = array();
2b7da645 379 $repeated = array();
6dbc3460 380 $repeated[] = $mform->createElement('editor', 'hint', get_string('hintn', 'question'),
7a719748 381 array('rows' => 5), $this->editoroptions);
2b7da645
TH
382 $repeatedoptions['hint']['type'] = PARAM_RAW;
383
6dbc3460 384 $optionelements = array();
2b7da645 385 if ($withclearwrong) {
6dbc3460 386 $optionelements[] = $mform->createElement('advcheckbox', 'hintclearwrong',
eaeb6b51 387 get_string('options', 'question'), get_string('clearwrongparts', 'question'));
2b7da645
TH
388 }
389 if ($withshownumpartscorrect) {
6dbc3460 390 $optionelements[] = $mform->createElement('advcheckbox', 'hintshownumcorrect', '',
eaeb6b51 391 get_string('shownumpartscorrect', 'question'));
2b7da645
TH
392 }
393
6dbc3460
CC
394 if (count($optionelements)) {
395 $repeated[] = $mform->createElement('group', 'hintoptions',
396 get_string('hintnoptions', 'question'), $optionelements, null, false);
397 }
398
2b7da645
TH
399 return array($repeated, $repeatedoptions);
400 }
401
eaeb6b51
TH
402 protected function add_interactive_settings($withclearwrong = false,
403 $withshownumpartscorrect = false) {
2b7da645
TH
404 $mform = $this->_form;
405
eaeb6b51
TH
406 $mform->addElement('header', 'multitriesheader',
407 get_string('settingsformultipletries', 'question'));
2b7da645
TH
408
409 $penalties = array(
410 1.0000000,
411 0.5000000,
412 0.3333333,
413 0.2500000,
414 0.2000000,
415 0.1000000,
416 0.0000000
417 );
418 if (!empty($this->question->penalty) && !in_array($this->question->penalty, $penalties)) {
419 $penalties[] = $this->question->penalty;
420 sort($penalties);
421 }
422 $penaltyoptions = array();
423 foreach ($penalties as $penalty) {
f4fe3968 424 $penaltyoptions["{$penalty}"] = (100 * $penalty) . '%';
2b7da645 425 }
eaeb6b51
TH
426 $mform->addElement('select', 'penalty',
427 get_string('penaltyforeachincorrecttry', 'question'), $penaltyoptions);
068b4594 428 $mform->addHelpButton('penalty', 'penaltyforeachincorrecttry', 'question');
2b7da645
TH
429 $mform->setDefault('penalty', 0.3333333);
430
431 if (isset($this->question->hints)) {
432 $counthints = count($this->question->hints);
433 } else {
434 $counthints = 0;
435 }
436
437 if ($this->question->formoptions->repeatelements) {
438 $repeatsatstart = max(self::DEFAULT_NUM_HINTS, $counthints);
439 } else {
440 $repeatsatstart = $counthints;
441 }
442
443 list($repeated, $repeatedoptions) = $this->get_hint_fields(
444 $withclearwrong, $withshownumpartscorrect);
445 $this->repeat_elements($repeated, $repeatsatstart, $repeatedoptions,
6dbc3460 446 'numhints', 'addhint', 1, get_string('addanotherhint', 'question'), true);
2b7da645
TH
447 }
448
449 public function set_data($question) {
f9b0500f 450 question_bank::get_qtype($question->qtype)->set_default_options($question);
2b7da645 451
c7218aef 452 // Prepare question text.
fe6ce234
DC
453 $draftid = file_get_submitted_draft_itemid('questiontext');
454
455 if (!empty($question->questiontext)) {
456 $questiontext = $question->questiontext;
457 } else {
1a2de1c7
TH
458 $questiontext = $this->_form->getElement('questiontext')->getValue();
459 $questiontext = $questiontext['text'];
271ffe3f 460 }
eaeb6b51
TH
461 $questiontext = file_prepare_draft_area($draftid, $this->context->id,
462 'question', 'questiontext', empty($question->id) ? null : (int) $question->id,
463 $this->fileoptions, $questiontext);
fe6ce234
DC
464
465 $question->questiontext = array();
466 $question->questiontext['text'] = $questiontext;
eaeb6b51
TH
467 $question->questiontext['format'] = empty($question->questiontextformat) ?
468 editors_get_preferred_format() : $question->questiontextformat;
fe6ce234
DC
469 $question->questiontext['itemid'] = $draftid;
470
c7218aef 471 // Prepare general feedback.
fe6ce234
DC
472 $draftid = file_get_submitted_draft_itemid('generalfeedback');
473
474 if (empty($question->generalfeedback)) {
1a2de1c7
TH
475 $generalfeedback = $this->_form->getElement('generalfeedback')->getValue();
476 $question->generalfeedback = $generalfeedback['text'];
fe6ce234
DC
477 }
478
eaeb6b51
TH
479 $feedback = file_prepare_draft_area($draftid, $this->context->id,
480 'question', 'generalfeedback', empty($question->id) ? null : (int) $question->id,
481 $this->fileoptions, $question->generalfeedback);
fe6ce234
DC
482 $question->generalfeedback = array();
483 $question->generalfeedback['text'] = $feedback;
eaeb6b51
TH
484 $question->generalfeedback['format'] = empty($question->generalfeedbackformat) ?
485 editors_get_preferred_format() : $question->generalfeedbackformat;
fe6ce234 486 $question->generalfeedback['itemid'] = $draftid;
295043c2 487
9152f6a5 488 // Remove unnecessary trailing 0s form grade fields.
cfd24d98 489 if (isset($question->defaultgrade)) {
490 $question->defaultgrade = 0 + $question->defaultgrade;
491 }
492 if (isset($question->penalty)) {
493 $question->penalty = 0 + $question->penalty;
494 }
9152f6a5 495
295043c2 496 // Set any options.
eaeb6b51
TH
497 $extraquestionfields = question_bank::get_qtype($question->qtype)->extra_question_fields();
498 if (is_array($extraquestionfields) && !empty($question->options)) {
499 array_shift($extraquestionfields);
500 foreach ($extraquestionfields as $field) {
a8e577de 501 if (property_exists($question->options, $field)) {
8e652f02 502 $question->$field = $question->options->$field;
503 }
295043c2 504 }
505 }
c9c989a0 506
c7218aef 507 // Subclass adds data_preprocessing code here.
fe6ce234 508 $question = $this->data_preprocessing($question);
2b7da645 509
32db0d42 510 parent::set_data($question);
36703ed7 511 }
1d284fbd 512
fe6ce234 513 /**
fdd015b7
TH
514 * Perform an preprocessing needed on the data passed to {@link set_data()}
515 * before it is used to initialise the form.
516 * @param object $question the data being passed to the form.
517 * @return object $question the modified data.
fe6ce234 518 */
c7df5006 519 protected function data_preprocessing($question) {
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520 return $question;
521 }
522
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523 /**
524 * Perform the necessary preprocessing for the fields added by
525 * {@link add_per_answer_fields()}.
526 * @param object $question the data being passed to the form.
527 * @return object $question the modified data.
528 */
2a6c5c52 529 protected function data_preprocessing_answers($question, $withanswerfiles = false) {
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530 if (empty($question->options->answers)) {
531 return $question;
532 }
533
534 $key = 0;
eaeb6b51 535 foreach ($question->options->answers as $answer) {
2a6c5c52 536 if ($withanswerfiles) {
c7218aef 537 // Prepare the feedback editor to display files in draft area.
2a6c5c52 538 $draftitemid = file_get_submitted_draft_itemid('answer['.$key.']');
539 $question->answer[$key]['text'] = file_prepare_draft_area(
3d9645ae 540 $draftitemid, // Draftid
2a6c5c52 541 $this->context->id, // context
542 'question', // component
543 'answer', // filarea
544 !empty($answer->id) ? (int) $answer->id : null, // itemid
545 $this->fileoptions, // options
3d9645ae 546 $answer->answer // text.
2a6c5c52 547 );
548 $question->answer[$key]['itemid'] = $draftitemid;
549 $question->answer[$key]['format'] = $answer->answerformat;
550 } else {
551 $question->answer[$key] = $answer->answer;
552 }
553
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554 $question->fraction[$key] = 0 + $answer->fraction;
555 $question->feedback[$key] = array();
556
557 // Evil hack alert. Formslib can store defaults in two ways for
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558 // repeat elements:
559 // ->_defaultValues['fraction[0]'] and
560 // ->_defaultValues['fraction'][0].
561 // The $repeatedoptions['fraction']['default'] = 0 bit above means
562 // that ->_defaultValues['fraction[0]'] has already been set, but we
563 // are using object notation here, so we will be setting
564 // ->_defaultValues['fraction'][0]. That does not work, so we have
c7218aef 565 // to unset ->_defaultValues['fraction[0]'].
f4fe3968 566 unset($this->_form->_defaultValues["fraction[{$key}]"]);
7a719748 567
c7218aef 568 // Prepare the feedback editor to display files in draft area.
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569 $draftitemid = file_get_submitted_draft_itemid('feedback['.$key.']');
570 $question->feedback[$key]['text'] = file_prepare_draft_area(
3d9645ae 571 $draftitemid, // Draftid
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572 $this->context->id, // context
573 'question', // component
574 'answerfeedback', // filarea
575 !empty($answer->id) ? (int) $answer->id : null, // itemid
576 $this->fileoptions, // options
3d9645ae 577 $answer->feedback // text.
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578 );
579 $question->feedback[$key]['itemid'] = $draftitemid;
580 $question->feedback[$key]['format'] = $answer->feedbackformat;
581 $key++;
582 }
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583
584 // Now process extra answer fields.
585 $extraanswerfields = question_bank::get_qtype($question->qtype)->extra_answer_fields();
586 if (is_array($extraanswerfields)) {
587 // Omit table name.
588 array_shift($extraanswerfields);
589 $question = $this->data_preprocessing_extra_answer_fields($question, $extraanswerfields);
590 }
591
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592 return $question;
593 }
594
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595 /**
596 * Perform the necessary preprocessing for the extra answer fields.
597 *
598 * Questions that do something not trivial when editing extra answer fields
599 * will want to override this.
600 * @param object $question the data being passed to the form.
601 * @param array $extraanswerfields extra answer fields (without table name).
602 * @return object $question the modified data.
603 */
604 protected function data_preprocessing_extra_answer_fields($question, $extraanswerfields) {
605 // Setting $question->$field[$key] won't work in PHP, so we need set an array of answer values to $question->$field.
606 // As we may have several extra fields with data for several answers in each, we use an array of arrays.
607 // Index in $extrafieldsdata is an extra answer field name, value - array of it's data for each answer.
608 $extrafieldsdata = array();
609 // First, prepare an array if empty arrays for each extra answer fields data.
610 foreach ($extraanswerfields as $field) {
611 $extrafieldsdata[$field] = array();
612 }
613
614 // Fill arrays with data from $question->options->answers.
615 $key = 0;
616 foreach ($question->options->answers as $answer) {
617 foreach ($extraanswerfields as $field) {
618 // See hack comment in {@link data_preprocessing_answers()}.
0e30442c 619 unset($this->_form->_defaultValues["{$field}[{$key}]"]);
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620 $extrafieldsdata[$field][$key] = $this->data_preprocessing_extra_answer_field($answer, $field);
621 }
622 $key++;
623 }
624
625 // Set this data in the $question object.
626 foreach ($extraanswerfields as $field) {
627 $question->$field = $extrafieldsdata[$field];
628 }
629 return $question;
630 }
631
632 /**
633 * Perfmorm preprocessing for particular extra answer field.
634 *
635 * Questions with non-trivial DB - form element relationship will
636 * want to override this.
637 * @param object $answer an answer object to get extra field from.
638 * @param string $field extra answer field name.
639 * @return field value to be set to the form.
640 */
641 protected function data_preprocessing_extra_answer_field($answer, $field) {
642 return $answer->$field;
643 }
644
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645 /**
646 * Perform the necessary preprocessing for the fields added by
647 * {@link add_combined_feedback_fields()}.
648 * @param object $question the data being passed to the form.
649 * @return object $question the modified data.
650 */
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651 protected function data_preprocessing_combined_feedback($question,
652 $withshownumcorrect = false) {
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653 if (empty($question->options)) {
654 return $question;
655 }
656
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657 $fields = array('correctfeedback', 'partiallycorrectfeedback', 'incorrectfeedback');
658 foreach ($fields as $feedbackname) {
c9c989a0 659 $draftid = file_get_submitted_draft_itemid($feedbackname);
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660 $feedback = array();
661 $feedback['text'] = file_prepare_draft_area(
3d9645ae 662 $draftid, // Draftid
c9c989a0 663 $this->context->id, // context
93cadb1e 664 'question', // component
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665 $feedbackname, // filarea
666 !empty($question->id) ? (int) $question->id : null, // itemid
667 $this->fileoptions, // options
3d9645ae 668 $question->options->$feedbackname // text.
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669 );
670 $feedbackformat = $feedbackname . 'format';
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671 $feedback['format'] = $question->options->$feedbackformat;
672 $feedback['itemid'] = $draftid;
673
674 $question->$feedbackname = $feedback;
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675 }
676
677 if ($withshownumcorrect) {
678 $question->shownumcorrect = $question->options->shownumcorrect;
679 }
680
681 return $question;
682 }
683
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684 /**
685 * Perform the necessary preprocessing for the hint fields.
686 * @param object $question the data being passed to the form.
687 * @return object $question the modified data.
688 */
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689 protected function data_preprocessing_hints($question, $withclearwrong = false,
690 $withshownumpartscorrect = false) {
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691 if (empty($question->hints)) {
692 return $question;
693 }
694
695 $key = 0;
eaeb6b51 696 foreach ($question->hints as $hint) {
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697 $question->hint[$key] = array();
698
c7218aef 699 // Prepare feedback editor to display files in draft area.
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700 $draftitemid = file_get_submitted_draft_itemid('hint['.$key.']');
701 $question->hint[$key]['text'] = file_prepare_draft_area(
3d9645ae 702 $draftitemid, // Draftid
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703 $this->context->id, // context
704 'question', // component
705 'hint', // filarea
706 !empty($hint->id) ? (int) $hint->id : null, // itemid
707 $this->fileoptions, // options
3d9645ae 708 $hint->hint // text.
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709 );
710 $question->hint[$key]['itemid'] = $draftitemid;
711 $question->hint[$key]['format'] = $hint->hintformat;
712 $key++;
7a719748 713
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714 if ($withclearwrong) {
715 $question->hintclearwrong[] = $hint->clearwrong;
716 }
717 if ($withshownumpartscorrect) {
718 $question->hintshownumcorrect[] = $hint->shownumcorrect;
719 }
720 }
7a719748 721
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722 return $question;
723 }
724
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725 public function validation($fromform, $files) {
726 $errors = parent::validation($fromform, $files);
51c5e605 727 if (empty($fromform['makecopy']) && isset($this->question->id)
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728 && ($this->question->formoptions->canedit ||
729 $this->question->formoptions->cansaveasnew)
51c5e605 730 && empty($fromform['usecurrentcat']) && !$this->question->formoptions->canmove) {
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731 $errors['currentgrp'] = get_string('nopermissionmove', 'question');
732 }
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733
734 // Default mark.
1aecaa3d 735 if (array_key_exists('defaultmark', $fromform) && $fromform['defaultmark'] < 0) {
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736 $errors['defaultmark'] = get_string('defaultmarkmustbepositive', 'question');
737 }
738
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739 return $errors;
740 }
741
36703ed7 742 /**
743 * Override this in the subclass to question type name.
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744 * @return the question type name, should be the same as the name() method
745 * in the question type class.
36703ed7 746 */
2b7da645 747 public abstract function qtype();
2a22be64 748
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749 /**
750 * Returns an array of editor options with collapsed options turned off.
0c0dfa8f 751 * @deprecated since 2.6
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752 * @return array
753 */
754 protected function get_non_collabsible_editor_options() {
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755 debugging('get_non_collabsible_editor_options() is deprecated, use $this->editoroptions instead.', DEBUG_DEVELOPER);
756 return $this->editoroptions;
2a22be64 757 }
0c0dfa8f 758
36703ed7 759}