| 1 |
efrain |
1 |
<?php
|
|
|
2 |
// This file is part of Moodle - http://moodle.org/
|
|
|
3 |
//
|
|
|
4 |
// Moodle is free software: you can redistribute it and/or modify
|
|
|
5 |
// it under the terms of the GNU General Public License as published by
|
|
|
6 |
// the Free Software Foundation, either version 3 of the License, or
|
|
|
7 |
// (at your option) any later version.
|
|
|
8 |
//
|
|
|
9 |
// Moodle is distributed in the hope that it will be useful,
|
|
|
10 |
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
11 |
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
12 |
// GNU General Public License for more details.
|
|
|
13 |
//
|
|
|
14 |
// You should have received a copy of the GNU General Public License
|
|
|
15 |
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
|
|
|
16 |
|
|
|
17 |
/**
|
|
|
18 |
* Blackboard V5 and V6 question importer.
|
|
|
19 |
*
|
|
|
20 |
* @package qformat_blackboard_six
|
|
|
21 |
* @copyright 2003 Scott Elliott
|
|
|
22 |
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
|
|
|
23 |
*/
|
|
|
24 |
|
|
|
25 |
defined('MOODLE_INTERNAL') || die();
|
|
|
26 |
|
|
|
27 |
require_once($CFG->libdir . '/xmlize.php');
|
|
|
28 |
|
|
|
29 |
/**
|
|
|
30 |
* Blackboard pool question importer class.
|
|
|
31 |
*
|
|
|
32 |
* @package qformat_blackboard_six
|
|
|
33 |
* @copyright 2003 Scott Elliott
|
|
|
34 |
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
|
|
|
35 |
*/
|
|
|
36 |
class qformat_blackboard_six_pool extends qformat_blackboard_six_base {
|
|
|
37 |
/**
|
|
|
38 |
* @var bool Is the current question's question text escaped HTML
|
|
|
39 |
* (true for most if not all Blackboard files).
|
|
|
40 |
*/
|
|
|
41 |
public $ishtml = true;
|
|
|
42 |
|
|
|
43 |
/**
|
|
|
44 |
* Parse the xml document into an array of questions
|
|
|
45 |
*
|
|
|
46 |
* This *could* burn memory - but it won't happen that much
|
|
|
47 |
* so fingers crossed!
|
|
|
48 |
*
|
|
|
49 |
* @param array $text array of lines from the input file.
|
|
|
50 |
* @return array (of objects) questions objects.
|
|
|
51 |
*/
|
|
|
52 |
protected function readquestions($text) {
|
|
|
53 |
|
|
|
54 |
// This converts xml to big nasty data structure,
|
|
|
55 |
// the 0 means keep white space as it is.
|
|
|
56 |
try {
|
|
|
57 |
$xml = xmlize($text, 0, 'UTF-8', true);
|
|
|
58 |
} catch (xml_format_exception $e) {
|
|
|
59 |
$this->error($e->getMessage(), '');
|
|
|
60 |
return false;
|
|
|
61 |
}
|
|
|
62 |
|
|
|
63 |
$questions = array();
|
|
|
64 |
|
|
|
65 |
$this->process_category($xml, $questions);
|
|
|
66 |
|
|
|
67 |
$this->process_tf($xml, $questions);
|
|
|
68 |
$this->process_mc($xml, $questions);
|
|
|
69 |
$this->process_ma($xml, $questions);
|
|
|
70 |
$this->process_fib($xml, $questions);
|
|
|
71 |
$this->process_matching($xml, $questions);
|
|
|
72 |
$this->process_essay($xml, $questions);
|
|
|
73 |
|
|
|
74 |
return $questions;
|
|
|
75 |
}
|
|
|
76 |
|
|
|
77 |
/**
|
|
|
78 |
* Do question import processing common to every qtype.
|
|
|
79 |
*
|
|
|
80 |
* @param array $questiondata the xml tree related to the current question
|
|
|
81 |
* @return object initialized question object.
|
|
|
82 |
*/
|
|
|
83 |
public function process_common($questiondata) {
|
|
|
84 |
|
|
|
85 |
// This routine initialises the question object.
|
|
|
86 |
$question = $this->defaultquestion();
|
|
|
87 |
|
|
|
88 |
// Determine if the question is already escaped html.
|
|
|
89 |
$this->ishtml = $this->getpath($questiondata,
|
|
|
90 |
array('#', 'BODY', 0, '#', 'FLAGS', 0, '#', 'ISHTML', 0, '@', 'value'),
|
|
|
91 |
false, false);
|
|
|
92 |
|
|
|
93 |
// Put questiontext in question object.
|
|
|
94 |
$text = $this->getpath($questiondata,
|
|
|
95 |
array('#', 'BODY', 0, '#', 'TEXT', 0, '#'),
|
|
|
96 |
'', true, get_string('importnotext', 'qformat_blackboard_six'));
|
|
|
97 |
|
|
|
98 |
$questiontext = $this->cleaned_text_field($text);
|
|
|
99 |
$question->questiontext = $questiontext['text'];
|
|
|
100 |
$question->questiontextformat = $questiontext['format']; // Needed because add_blank_combined_feedback uses it.
|
|
|
101 |
if (isset($questiontext['itemid'])) {
|
|
|
102 |
$question->questiontextitemid = $questiontext['itemid'];
|
|
|
103 |
}
|
|
|
104 |
|
|
|
105 |
// Put name in question object. We must ensure it is not empty and it is less than 250 chars.
|
|
|
106 |
$id = $this->getpath($questiondata, array('@', 'id'), '', true);
|
|
|
107 |
$question->name = $this->create_default_question_name($question->questiontext,
|
|
|
108 |
get_string('defaultname', 'qformat_blackboard_six' , $id));
|
|
|
109 |
|
|
|
110 |
$question->generalfeedback = '';
|
|
|
111 |
$question->generalfeedbackformat = FORMAT_HTML;
|
|
|
112 |
$question->generalfeedbackfiles = array();
|
|
|
113 |
|
|
|
114 |
// TODO : read the mark from the POOL TITLE QUESTIONLIST section.
|
|
|
115 |
$question->defaultmark = 1;
|
|
|
116 |
return $question;
|
|
|
117 |
}
|
|
|
118 |
|
|
|
119 |
/**
|
|
|
120 |
* Add a category question entry based on the pool file title
|
|
|
121 |
* @param array $xml the xml tree
|
|
|
122 |
* @param array $questions the questions already parsed
|
|
|
123 |
*/
|
|
|
124 |
public function process_category($xml, &$questions) {
|
|
|
125 |
$title = $this->getpath($xml, array('POOL', '#', 'TITLE', 0, '@', 'value'), '', true);
|
|
|
126 |
|
|
|
127 |
$dummyquestion = new stdClass();
|
|
|
128 |
$dummyquestion->qtype = 'category';
|
|
|
129 |
$dummyquestion->category = $this->cleaninput($this->clean_question_name($title));
|
|
|
130 |
|
|
|
131 |
$questions[] = $dummyquestion;
|
|
|
132 |
}
|
|
|
133 |
|
|
|
134 |
/**
|
|
|
135 |
* Process Essay Questions
|
|
|
136 |
* @param array $xml the xml tree
|
|
|
137 |
* @param array $questions the questions already parsed
|
|
|
138 |
*/
|
|
|
139 |
public function process_essay($xml, &$questions) {
|
|
|
140 |
|
|
|
141 |
if ($this->getpath($xml, array('POOL', '#', 'QUESTION_ESSAY'), false, false)) {
|
|
|
142 |
$essayquestions = $this->getpath($xml,
|
|
|
143 |
array('POOL', '#', 'QUESTION_ESSAY'), false, false);
|
|
|
144 |
} else {
|
|
|
145 |
return;
|
|
|
146 |
}
|
|
|
147 |
|
|
|
148 |
foreach ($essayquestions as $thisquestion) {
|
|
|
149 |
|
|
|
150 |
$question = $this->process_common($thisquestion);
|
|
|
151 |
|
|
|
152 |
$question->qtype = 'essay';
|
|
|
153 |
|
|
|
154 |
$question->answer = '';
|
|
|
155 |
$answer = $this->getpath($thisquestion,
|
|
|
156 |
array('#', 'ANSWER', 0, '#', 'TEXT', 0, '#'), '', true);
|
|
|
157 |
$question->graderinfo = $this->cleaned_text_field($answer);
|
|
|
158 |
$question->responsetemplate = $this->text_field('');
|
|
|
159 |
$question->feedback = '';
|
|
|
160 |
$question->responseformat = 'editor';
|
|
|
161 |
$question->responserequired = 1;
|
|
|
162 |
$question->responsefieldlines = 15;
|
|
|
163 |
$question->attachments = 0;
|
|
|
164 |
$question->attachmentsrequired = 0;
|
|
|
165 |
$question->fraction = 0;
|
|
|
166 |
|
|
|
167 |
$questions[] = $question;
|
|
|
168 |
}
|
|
|
169 |
}
|
|
|
170 |
|
|
|
171 |
/**
|
|
|
172 |
* Process True / False Questions
|
|
|
173 |
* @param array $xml the xml tree
|
|
|
174 |
* @param array $questions the questions already parsed
|
|
|
175 |
*/
|
|
|
176 |
public function process_tf($xml, &$questions) {
|
|
|
177 |
|
|
|
178 |
if ($this->getpath($xml, array('POOL', '#', 'QUESTION_TRUEFALSE'), false, false)) {
|
|
|
179 |
$tfquestions = $this->getpath($xml,
|
|
|
180 |
array('POOL', '#', 'QUESTION_TRUEFALSE'), false, false);
|
|
|
181 |
} else {
|
|
|
182 |
return;
|
|
|
183 |
}
|
|
|
184 |
|
|
|
185 |
foreach ($tfquestions as $thisquestion) {
|
|
|
186 |
|
|
|
187 |
$question = $this->process_common($thisquestion);
|
|
|
188 |
|
|
|
189 |
$question->qtype = 'truefalse';
|
|
|
190 |
$question->single = 1; // Only one answer is allowed.
|
|
|
191 |
|
|
|
192 |
$choices = $this->getpath($thisquestion, array('#', 'ANSWER'), array(), false);
|
|
|
193 |
|
|
|
194 |
$correctanswer = $this->getpath($thisquestion,
|
|
|
195 |
array('#', 'GRADABLE', 0, '#', 'CORRECTANSWER', 0, '@', 'answer_id'),
|
|
|
196 |
'', true);
|
|
|
197 |
|
|
|
198 |
// First choice is true, second is false.
|
|
|
199 |
$id = $this->getpath($choices[0], array('@', 'id'), '', true);
|
|
|
200 |
$correctfeedback = $this->getpath($thisquestion,
|
|
|
201 |
array('#', 'GRADABLE', 0, '#', 'FEEDBACK_WHEN_CORRECT', 0, '#'),
|
|
|
202 |
'', true);
|
|
|
203 |
$incorrectfeedback = $this->getpath($thisquestion,
|
|
|
204 |
array('#', 'GRADABLE', 0, '#', 'FEEDBACK_WHEN_INCORRECT', 0, '#'),
|
|
|
205 |
'', true);
|
|
|
206 |
if (strcmp($id, $correctanswer) == 0) { // True is correct.
|
|
|
207 |
$question->answer = 1;
|
|
|
208 |
$question->feedbacktrue = $this->cleaned_text_field($correctfeedback);
|
|
|
209 |
$question->feedbackfalse = $this->cleaned_text_field($incorrectfeedback);
|
|
|
210 |
} else { // False is correct.
|
|
|
211 |
$question->answer = 0;
|
|
|
212 |
$question->feedbacktrue = $this->cleaned_text_field($incorrectfeedback);
|
|
|
213 |
$question->feedbackfalse = $this->cleaned_text_field($correctfeedback);
|
|
|
214 |
}
|
|
|
215 |
$question->correctanswer = $question->answer;
|
|
|
216 |
$questions[] = $question;
|
|
|
217 |
}
|
|
|
218 |
}
|
|
|
219 |
|
|
|
220 |
/**
|
|
|
221 |
* Process Multiple Choice Questions with single answer
|
|
|
222 |
* @param array $xml the xml tree
|
|
|
223 |
* @param array $questions the questions already parsed
|
|
|
224 |
*/
|
|
|
225 |
public function process_mc($xml, &$questions) {
|
|
|
226 |
|
|
|
227 |
if ($this->getpath($xml, array('POOL', '#', 'QUESTION_MULTIPLECHOICE'), false, false)) {
|
|
|
228 |
$mcquestions = $this->getpath($xml,
|
|
|
229 |
array('POOL', '#', 'QUESTION_MULTIPLECHOICE'), false, false);
|
|
|
230 |
} else {
|
|
|
231 |
return;
|
|
|
232 |
}
|
|
|
233 |
|
|
|
234 |
foreach ($mcquestions as $thisquestion) {
|
|
|
235 |
|
|
|
236 |
$question = $this->process_common($thisquestion);
|
|
|
237 |
|
|
|
238 |
$correctfeedback = $this->getpath($thisquestion,
|
|
|
239 |
array('#', 'GRADABLE', 0, '#', 'FEEDBACK_WHEN_CORRECT', 0, '#'),
|
|
|
240 |
'', true);
|
|
|
241 |
$incorrectfeedback = $this->getpath($thisquestion,
|
|
|
242 |
array('#', 'GRADABLE', 0, '#', 'FEEDBACK_WHEN_INCORRECT', 0, '#'),
|
|
|
243 |
'', true);
|
|
|
244 |
$question->correctfeedback = $this->cleaned_text_field($correctfeedback);
|
|
|
245 |
$question->partiallycorrectfeedback = $this->text_field('');
|
|
|
246 |
$question->incorrectfeedback = $this->cleaned_text_field($incorrectfeedback);
|
|
|
247 |
|
|
|
248 |
$question->qtype = 'multichoice';
|
|
|
249 |
$question->single = 1; // Only one answer is allowed.
|
|
|
250 |
|
|
|
251 |
$choices = $this->getpath($thisquestion, array('#', 'ANSWER'), false, false);
|
|
|
252 |
$correctanswerid = $this->getpath($thisquestion,
|
|
|
253 |
array('#', 'GRADABLE', 0, '#', 'CORRECTANSWER', 0, '@', 'answer_id'),
|
|
|
254 |
'', true);
|
|
|
255 |
foreach ($choices as $choice) {
|
|
|
256 |
$choicetext = $this->getpath($choice, array('#', 'TEXT', 0, '#'), '', true);
|
|
|
257 |
// Put this choice in the question object.
|
|
|
258 |
$question->answer[] = $this->cleaned_text_field($choicetext);
|
|
|
259 |
|
|
|
260 |
$choiceid = $this->getpath($choice, array('@', 'id'), '', true);
|
|
|
261 |
// If choice is the right answer, give 100% mark, otherwise give 0%.
|
|
|
262 |
if (strcmp ($choiceid, $correctanswerid) == 0) {
|
|
|
263 |
$question->fraction[] = 1;
|
|
|
264 |
} else {
|
|
|
265 |
$question->fraction[] = 0;
|
|
|
266 |
}
|
|
|
267 |
// There is never feedback specific to each choice.
|
|
|
268 |
$question->feedback[] = $this->text_field('');
|
|
|
269 |
}
|
|
|
270 |
$questions[] = $question;
|
|
|
271 |
}
|
|
|
272 |
}
|
|
|
273 |
|
|
|
274 |
/**
|
|
|
275 |
* Process Multiple Choice Questions With Multiple Answers
|
|
|
276 |
* @param array $xml the xml tree
|
|
|
277 |
* @param array $questions the questions already parsed
|
|
|
278 |
*/
|
|
|
279 |
public function process_ma($xml, &$questions) {
|
|
|
280 |
if ($this->getpath($xml, array('POOL', '#', 'QUESTION_MULTIPLEANSWER'), false, false)) {
|
|
|
281 |
$maquestions = $this->getpath($xml,
|
|
|
282 |
array('POOL', '#', 'QUESTION_MULTIPLEANSWER'), false, false);
|
|
|
283 |
} else {
|
|
|
284 |
return;
|
|
|
285 |
}
|
|
|
286 |
|
|
|
287 |
foreach ($maquestions as $thisquestion) {
|
|
|
288 |
$question = $this->process_common($thisquestion);
|
|
|
289 |
|
|
|
290 |
$correctfeedback = $this->getpath($thisquestion,
|
|
|
291 |
array('#', 'GRADABLE', 0, '#', 'FEEDBACK_WHEN_CORRECT', 0, '#'),
|
|
|
292 |
'', true);
|
|
|
293 |
$incorrectfeedback = $this->getpath($thisquestion,
|
|
|
294 |
array('#', 'GRADABLE', 0, '#', 'FEEDBACK_WHEN_INCORRECT', 0, '#'),
|
|
|
295 |
'', true);
|
|
|
296 |
$question->correctfeedback = $this->cleaned_text_field($correctfeedback);
|
|
|
297 |
// As there is no partially correct feedback we use incorrect one.
|
|
|
298 |
$question->partiallycorrectfeedback = $this->cleaned_text_field($incorrectfeedback);
|
|
|
299 |
$question->incorrectfeedback = $this->cleaned_text_field($incorrectfeedback);
|
|
|
300 |
|
|
|
301 |
$question->qtype = 'multichoice';
|
|
|
302 |
$question->defaultmark = 1;
|
|
|
303 |
$question->single = 0; // More than one answers allowed.
|
|
|
304 |
|
|
|
305 |
$choices = $this->getpath($thisquestion, array('#', 'ANSWER'), false, false);
|
|
|
306 |
$correctanswerids = array();
|
|
|
307 |
foreach ($this->getpath($thisquestion,
|
|
|
308 |
array('#', 'GRADABLE', 0, '#', 'CORRECTANSWER'), false, false) as $correctanswer) {
|
|
|
309 |
if ($correctanswer) {
|
|
|
310 |
$correctanswerids[] = $this->getpath($correctanswer,
|
|
|
311 |
array('@', 'answer_id'),
|
|
|
312 |
'', true);
|
|
|
313 |
}
|
|
|
314 |
}
|
|
|
315 |
$fraction = 1 / count($correctanswerids);
|
|
|
316 |
|
|
|
317 |
foreach ($choices as $choice) {
|
|
|
318 |
$choicetext = $this->getpath($choice, array('#', 'TEXT', 0, '#'), '', true);
|
|
|
319 |
// Put this choice in the question object.
|
|
|
320 |
$question->answer[] = $this->cleaned_text_field($choicetext);
|
|
|
321 |
|
|
|
322 |
$choiceid = $this->getpath($choice, array('@', 'id'), '', true);
|
|
|
323 |
|
|
|
324 |
$iscorrect = in_array($choiceid, $correctanswerids);
|
|
|
325 |
|
|
|
326 |
if ($iscorrect) {
|
|
|
327 |
$question->fraction[] = $fraction;
|
|
|
328 |
} else {
|
|
|
329 |
$question->fraction[] = 0;
|
|
|
330 |
}
|
|
|
331 |
// There is never feedback specific to each choice.
|
|
|
332 |
$question->feedback[] = $this->text_field('');
|
|
|
333 |
}
|
|
|
334 |
$questions[] = $question;
|
|
|
335 |
}
|
|
|
336 |
}
|
|
|
337 |
|
|
|
338 |
/**
|
|
|
339 |
* Process Fill in the Blank Questions
|
|
|
340 |
* @param array $xml the xml tree
|
|
|
341 |
* @param array $questions the questions already parsed
|
|
|
342 |
*/
|
|
|
343 |
public function process_fib($xml, &$questions) {
|
|
|
344 |
if ($this->getpath($xml, array('POOL', '#', 'QUESTION_FILLINBLANK'), false, false)) {
|
|
|
345 |
$fibquestions = $this->getpath($xml,
|
|
|
346 |
array('POOL', '#', 'QUESTION_FILLINBLANK'), false, false);
|
|
|
347 |
} else {
|
|
|
348 |
return;
|
|
|
349 |
}
|
|
|
350 |
|
|
|
351 |
foreach ($fibquestions as $thisquestion) {
|
|
|
352 |
|
|
|
353 |
$question = $this->process_common($thisquestion);
|
|
|
354 |
|
|
|
355 |
$question->qtype = 'shortanswer';
|
|
|
356 |
$question->usecase = 0; // Ignore case.
|
|
|
357 |
|
|
|
358 |
$correctfeedback = $this->getpath($thisquestion,
|
|
|
359 |
array('#', 'GRADABLE', 0, '#', 'FEEDBACK_WHEN_CORRECT', 0, '#'),
|
|
|
360 |
'', true);
|
|
|
361 |
$incorrectfeedback = $this->getpath($thisquestion,
|
|
|
362 |
array('#', 'GRADABLE', 0, '#', 'FEEDBACK_WHEN_INCORRECT', 0, '#'),
|
|
|
363 |
'', true);
|
|
|
364 |
$answers = $this->getpath($thisquestion, array('#', 'ANSWER'), false, false);
|
|
|
365 |
foreach ($answers as $answer) {
|
|
|
366 |
$question->answer[] = $this->getpath($answer,
|
|
|
367 |
array('#', 'TEXT', 0, '#'), '', true);
|
|
|
368 |
$question->fraction[] = 1;
|
|
|
369 |
$question->feedback[] = $this->cleaned_text_field($correctfeedback);
|
|
|
370 |
}
|
|
|
371 |
$question->answer[] = '*';
|
|
|
372 |
$question->fraction[] = 0;
|
|
|
373 |
$question->feedback[] = $this->cleaned_text_field($incorrectfeedback);
|
|
|
374 |
|
|
|
375 |
$questions[] = $question;
|
|
|
376 |
}
|
|
|
377 |
}
|
|
|
378 |
|
|
|
379 |
/**
|
|
|
380 |
* Process Matching Questions
|
|
|
381 |
* @param array $xml the xml tree
|
|
|
382 |
* @param array $questions the questions already parsed
|
|
|
383 |
*/
|
|
|
384 |
public function process_matching($xml, &$questions) {
|
|
|
385 |
if ($this->getpath($xml, array('POOL', '#', 'QUESTION_MATCH'), false, false)) {
|
|
|
386 |
$matchquestions = $this->getpath($xml,
|
|
|
387 |
array('POOL', '#', 'QUESTION_MATCH'), false, false);
|
|
|
388 |
} else {
|
|
|
389 |
return;
|
|
|
390 |
}
|
|
|
391 |
// Blackboard questions can't be imported in core Moodle without a loss in data,
|
|
|
392 |
// as core match question don't allow HTML in subanswers. The contributed ddmatch
|
|
|
393 |
// question type support HTML in subanswers.
|
|
|
394 |
// The ddmatch question type is not part of core, so we need to check if it is defined.
|
|
|
395 |
$ddmatchisinstalled = question_bank::is_qtype_installed('ddmatch');
|
|
|
396 |
|
|
|
397 |
foreach ($matchquestions as $thisquestion) {
|
|
|
398 |
|
|
|
399 |
$question = $this->process_common($thisquestion);
|
|
|
400 |
if ($ddmatchisinstalled) {
|
|
|
401 |
$question->qtype = 'ddmatch';
|
|
|
402 |
} else {
|
|
|
403 |
$question->qtype = 'match';
|
|
|
404 |
}
|
|
|
405 |
|
|
|
406 |
$correctfeedback = $this->getpath($thisquestion,
|
|
|
407 |
array('#', 'GRADABLE', 0, '#', 'FEEDBACK_WHEN_CORRECT', 0, '#'),
|
|
|
408 |
'', true);
|
|
|
409 |
$incorrectfeedback = $this->getpath($thisquestion,
|
|
|
410 |
array('#', 'GRADABLE', 0, '#', 'FEEDBACK_WHEN_INCORRECT', 0, '#'),
|
|
|
411 |
'', true);
|
|
|
412 |
$question->correctfeedback = $this->cleaned_text_field($correctfeedback);
|
|
|
413 |
// As there is no partially correct feedback we use incorrect one.
|
|
|
414 |
$question->partiallycorrectfeedback = $this->cleaned_text_field($incorrectfeedback);
|
|
|
415 |
$question->incorrectfeedback = $this->cleaned_text_field($incorrectfeedback);
|
|
|
416 |
|
|
|
417 |
$choices = $this->getpath($thisquestion,
|
|
|
418 |
array('#', 'CHOICE'), false, false); // Blackboard "choices" are Moodle subanswers.
|
|
|
419 |
$answers = $this->getpath($thisquestion,
|
|
|
420 |
array('#', 'ANSWER'), false, false); // Blackboard "answers" are Moodle subquestions.
|
|
|
421 |
$correctanswers = $this->getpath($thisquestion,
|
|
|
422 |
array('#', 'GRADABLE', 0, '#', 'CORRECTANSWER'), false, false); // Mapping between choices and answers.
|
|
|
423 |
$mappings = array();
|
|
|
424 |
foreach ($correctanswers as $correctanswer) {
|
|
|
425 |
if ($correctanswer) {
|
|
|
426 |
$correctchoiceid = $this->getpath($correctanswer,
|
|
|
427 |
array('@', 'choice_id'), '', true);
|
|
|
428 |
$correctanswerid = $this->getpath($correctanswer,
|
|
|
429 |
array('@', 'answer_id'),
|
|
|
430 |
'', true);
|
|
|
431 |
$mappings[$correctanswerid] = $correctchoiceid;
|
|
|
432 |
}
|
|
|
433 |
}
|
|
|
434 |
|
|
|
435 |
foreach ($choices as $choice) {
|
|
|
436 |
if ($ddmatchisinstalled) {
|
|
|
437 |
$choicetext = $this->cleaned_text_field($this->getpath($choice,
|
|
|
438 |
array('#', 'TEXT', 0, '#'), '', true));
|
|
|
439 |
} else {
|
|
|
440 |
$choicetext = trim(strip_tags($this->getpath($choice,
|
|
|
441 |
array('#', 'TEXT', 0, '#'), '', true)));
|
|
|
442 |
}
|
|
|
443 |
|
|
|
444 |
if ($choicetext != '') { // Only import non empty subanswers.
|
|
|
445 |
$subquestion = '';
|
|
|
446 |
$choiceid = $this->getpath($choice,
|
|
|
447 |
array('@', 'id'), '', true);
|
|
|
448 |
$fiber = array_search($choiceid, $mappings);
|
|
|
449 |
$fiber = moodle_array_keys_filter($mappings, $choiceid);
|
|
|
450 |
foreach ($fiber as $correctanswerid) {
|
|
|
451 |
// We have found a correspondance for this choice so we need to take the associated answer.
|
|
|
452 |
foreach ($answers as $answer) {
|
|
|
453 |
$currentanswerid = $this->getpath($answer,
|
|
|
454 |
array('@', 'id'), '', true);
|
|
|
455 |
if (strcmp ($currentanswerid, $correctanswerid) == 0) {
|
|
|
456 |
$subquestion = $this->getpath($answer,
|
|
|
457 |
array('#', 'TEXT', 0, '#'), '', true);
|
|
|
458 |
break;
|
|
|
459 |
}
|
|
|
460 |
}
|
|
|
461 |
$question->subquestions[] = $this->cleaned_text_field($subquestion);
|
|
|
462 |
$question->subanswers[] = $choicetext;
|
|
|
463 |
}
|
|
|
464 |
|
|
|
465 |
if ($subquestion == '') { // Then in this case, $choice is a distractor.
|
|
|
466 |
$question->subquestions[] = $this->text_field('');
|
|
|
467 |
$question->subanswers[] = $choicetext;
|
|
|
468 |
}
|
|
|
469 |
}
|
|
|
470 |
}
|
|
|
471 |
|
|
|
472 |
// Verify that this matching question has enough subquestions and subanswers.
|
|
|
473 |
$subquestioncount = 0;
|
|
|
474 |
$subanswercount = 0;
|
|
|
475 |
$subanswers = $question->subanswers;
|
|
|
476 |
foreach ($question->subquestions as $key => $subquestion) {
|
|
|
477 |
$subquestion = $subquestion['text'];
|
|
|
478 |
$subanswer = $subanswers[$key];
|
|
|
479 |
if ($subquestion != '') {
|
|
|
480 |
$subquestioncount++;
|
|
|
481 |
}
|
|
|
482 |
$subanswercount++;
|
|
|
483 |
}
|
|
|
484 |
if ($subquestioncount < 2 || $subanswercount < 3) {
|
|
|
485 |
$this->error(get_string('notenoughtsubans', 'qformat_blackboard_six', $question->questiontext));
|
|
|
486 |
} else {
|
|
|
487 |
$questions[] = $question;
|
|
|
488 |
}
|
|
|
489 |
|
|
|
490 |
}
|
|
|
491 |
}
|
|
|
492 |
}
|