1: # The LearningOnline Network with CAPA
2: # various response type definitons response definition
3: #
4: # $Id: response.pm,v 1.105 2004/09/27 22:47:49 albertel Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28:
29: package Apache::response;
30: use strict;
31: use Apache::lonlocal;
32:
33: BEGIN {
34: &Apache::lonxml::register('Apache::response',('responseparam','parameter','dataresponse'));
35: }
36:
37: sub start_response {
38: my ($parstack,$safeeval)=@_;
39: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
40: if ($id eq '') { $id = $Apache::lonxml::curdepth; }
41: if ($#Apache::inputtags::import > -1) {
42: &Apache::lonxml::debug("Turning :$id: into");
43: $id = join('_',@Apache::inputtags::import).'_'.$id;
44: &Apache::lonxml::debug("New :$id:");
45: }
46: push (@Apache::inputtags::response,$id);
47: push (@Apache::inputtags::responselist,$id);
48: @Apache::inputtags::inputlist=();
49: if ($Apache::inputtags::part eq '' &&
50: !$Apache::lonhomework::ignore_response_errors) {
51: &Apache::lonxml::error(&HTML::Entities::encode(&mt("Found a <*response> outside of a <part> in a <part>ed problem"),'<>&"'));
52: }
53: if ($Apache::inputtags::response_with_no_part &&
54: $Apache::inputtags::part ne '0') {
55: &Apache::lonxml::error(&HTML::Entities::encode(&mt("<*response>s are both inside of <part> and outside of <part>, this is not a valid problem, errors in grading may occur."),'<>&"').'<br />');
56: }
57: if ($Apache::inputtags::part eq '0') {
58: $Apache::inputtags::response_with_no_part=1;
59: }
60: return $id;
61: }
62:
63: sub end_response {
64: #pop @Apache::inputtags::response;
65: @Apache::inputtags::inputlist=();
66: return '';
67: }
68:
69: sub start_hintresponse {
70: my ($parstack,$safeeval)=@_;
71: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
72: if ($id eq '') { $id = $Apache::lonxml::curdepth; }
73: push (@Apache::inputtags::response,$id);
74: push (@Apache::inputtags::responselist,$id);
75: push (@Apache::inputtags::paramstack,[%Apache::inputtags::params]);
76: return $id;
77: }
78:
79: sub end_hintresponse {
80: pop @Apache::inputtags::response;
81: if (defined($Apache::inputtags::paramstack[-1])) {
82: %Apache::inputtags::params=
83: @{ pop(@Apache::inputtags::paramstack) };
84: }
85: return '';
86: }
87:
88: my @randomseeds;
89: sub pushrandomnumber {
90: my $rand_alg=&Apache::lonnet::get_rand_alg();
91: if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
92: $rand_alg eq '64bit2') {
93: # do nothing
94: } else {
95: my @seed=&Math::Random::random_get_seed();
96: push (@randomseeds,\@seed);
97: }
98: &Apache::response::setrandomnumber();
99: }
100: sub poprandomnumber {
101: my $rand_alg=&Apache::lonnet::get_rand_alg();
102: if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
103: $rand_alg eq '64bit2') {
104: return;
105: }
106: my $seed=pop(@randomseeds);
107: if ($seed) {
108: &Math::Random::random_set_seed(@$seed);
109: } else {
110: &Apache::lonxml::error("Unable to restore random algorithm.");
111: }
112: }
113: sub setrandomnumber {
114: my $rndseed;
115: $rndseed=&Apache::structuretags::setup_rndseed();
116: if (!defined($rndseed)) { $rndseed=&Apache::lonnet::rndseed(); }
117: &Apache::lonxml::debug("randseed $rndseed");
118: # $rndseed=unpack("%32i",$rndseed);
119: my $rand_alg=&Apache::lonnet::get_rand_alg();
120: my $rndmod;
121: if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
122: $rand_alg eq '64bit2') {
123: $rndmod=(&Apache::lonnet::numval($Apache::inputtags::part) << 10);
124: if (defined($Apache::inputtags::response[-1])) {
125: $rndmod+=&Apache::lonnet::numval($Apache::inputtags::response[-1]);
126: }
127: } else {
128: $rndmod=(&Apache::lonnet::numval2($Apache::inputtags::part) << 10);
129: if (defined($Apache::inputtags::response[-1])) {
130: $rndmod+=&Apache::lonnet::numval2($Apache::inputtags::response[-1]);
131: }
132: }
133: if ($rndseed =~/([,:])/) {
134: my $char=$1;
135: use integer;
136: my ($num1,$num2)=split(/\Q$char\E/,$rndseed);
137: $num1+=$rndmod;
138: $num2+=$rndmod;
139: $rndseed=$num1.$char.$num2;
140: } else {
141: $rndseed+=$rndmod;
142: }
143: &Apache::lonnet::setup_random_from_rndseed($rndseed);
144: &Apache::lonxml::debug("randseed $rndseed");
145: return '';
146: }
147:
148: sub meta_parameter_write {
149: my ($name,$type,$default,$display)=@_;
150: my $partref=$Apache::inputtags::part;
151: my $result='<parameter part="'.$Apache::inputtags::part.'"';
152: if (defined($Apache::inputtags::response[-1])) {
153: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
154: $partref.='_'.$Apache::inputtags::response[-1];
155: }
156: $result.= ' name="'.$name.'"'.
157: ' type="'.$type.'"'.
158: (defined($default)?' default="'.$default.'"':'').
159: (defined($display)?' display="'.$display.' [Part: '.$partref.']"':'')
160: .'></parameter>'
161: ."\n";
162: return $result;
163: }
164:
165: sub meta_package_write {
166: my $name=shift;
167: my $result = '<parameter part="'.$Apache::inputtags::part.'"';
168: if(defined($Apache::inputtags::response[-1])) {
169: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
170: }
171: $result.=' package="'.$name.'"></parameter>'."\n";
172: return $result;
173: }
174:
175: sub meta_stores_write {
176: my ($name,$type,$display)=@_;
177: my $partref=$Apache::inputtags::part;
178: my $result = '<stores part="'.$Apache::inputtags::part.'"';
179: if (defined($Apache::inputtags::response[-1])) {
180: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
181: $partref.='_'.$Apache::inputtags::response[-1];
182: }
183: $result.= ' name="'.$name.'"'.
184: ' type="'.$type.'"'.
185: ' display="'.$display.' [Part: '.$partref.']"'.
186: "></stores>\n";
187: }
188:
189: sub mandatory_part_meta {
190: #
191: # Autogenerate metadata for mandatory
192: # input (from RAT or lonparmset) and
193: # output (to lonspreadsheet)
194: # of each part
195: #
196: return
197: # &meta_parameter_write('opendate','date_start','',
198: # 'Opening Date').
199: # &meta_parameter_write('duedate','date_end','',
200: # 'Due Date').
201: # &meta_parameter_write('answerdate','date_start','',
202: # 'Show Answer Date').
203: # &meta_parameter_write('weight','int_zeropos','',
204: # 'Available Points').
205: # &meta_parameter_write('maxtries','int_pos','',
206: # 'Maximum Number of Tries').
207: &meta_package_write('part').
208: &meta_stores_write('solved','string',
209: 'Problem Status').
210: &meta_stores_write('tries','int_zeropos',
211: 'Number of Attempts').
212: &meta_stores_write('awarded','float',
213: 'Partial Credit Factor');
214: #
215: # Note: responseid-specific data 'submission' and 'awarddetail'
216: # not available to spreadsheet -> skip here
217: #
218: }
219:
220: sub meta_part_order {
221: if (@Apache::inputtags::partlist) {
222: my @parts=@Apache::inputtags::partlist;
223: shift(@parts);
224: return '<partorder>'.join(',',@parts).'</partorder>'."\n";
225: } else {
226: return '<partorder>0</partorder>'."\n";
227: }
228: }
229:
230: sub meta_response_order {
231: if (@Apache::inputtags::responselist) {
232: return '<responseorder>'.join(',',@Apache::inputtags::responselist).
233: '</responseorder>'."\n";
234: }
235: }
236:
237: sub check_for_previous {
238: my ($curresponse,$partid,$id) = @_;
239: my %previous;
240: $previous{'used'} = 0;
241: foreach my $key (sort(keys(%Apache::lonhomework::history))) {
242: if ($key =~ /resource\.$partid\.$id\.submission$/) {
243: &Apache::lonxml::debug("Trying $key");
244: my $pastresponse=$Apache::lonhomework::history{$key};
245: if ($pastresponse eq $curresponse) {
246: $previous{'used'} = 1;
247: my $history;
248: if ( $key =~ /^(\d+):/ ) {
249: $history=$1;
250: $previous{'award'} = $Apache::lonhomework::history{"$history:resource.$partid.$id.awarddetail"};
251: $previous{'last'}='0';
252: push(@{ $previous{'version'} },$history);
253: } else {
254: $previous{'award'} = $Apache::lonhomework::history{"resource.$partid.$id.awarddetail"};
255: $previous{'last'}='1';
256: }
257: if (! $previous{'award'} ) { $previous{'award'} = 'UNKNOWN'; }
258: &Apache::lonxml::debug("got a match :$previous{'award'}:$previous{'used'}:");
259: }
260: }
261: }
262: &Apache::lonhomework::showhash(%previous);
263: return %previous;
264: }
265:
266: sub handle_previous {
267: my ($previous,$ad)=@_;
268: if ($$previous{'used'} && ($$previous{'award'} eq $ad) ) {
269: if ($$previous{'last'}) {
270: push(@Apache::inputtags::previous,'PREVIOUSLY_LAST');
271: } else {
272: push(@Apache::inputtags::previous,'PREVIOUSLY_USED');
273: }
274: push(@Apache::inputtags::previous_version,$$previous{'version'});
275: }
276: }
277:
278: sub view_or_modify {
279: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
280: my $myself=0;
281: if ( ($name eq $ENV{'user.name'}) && ($domain eq $ENV{'user.domain'}) ) {
282: $myself=1;
283: }
284: my $vgr=&Apache::lonnet::allowed('vgr',$courseid);
285: my $mgr=&Apache::lonnet::allowed('vgr',$courseid);
286: if ($mgr) { return "M"; }
287: if ($vgr) { return "V"; }
288: if ($myself) { return "V"; }
289: return '';
290: }
291:
292: sub start_dataresponse {
293: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
294: my $id = &Apache::response::start_response($parstack,$safeeval);
295: my $result;
296: if ($target eq 'web') {
297: $result = $token->[2]->{'display'}.':';
298: } elsif ($target eq 'meta') {
299: $result = &Apache::response::meta_stores_write($token->[2]->{'name'},
300: $token->[2]->{'type'},
301: $token->[2]->{'display'});
302: $result .= &Apache::response::meta_package_write('dataresponse');
303: }
304: return $result;
305: }
306:
307: sub end_dataresponse {
308: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
309: my $result;
310: if ( $target eq 'web' ) {
311: } elsif ($target eq 'grade' ) {
312: if ( defined $ENV{'form.submitted'}) {
313: my ($symb,$courseid,$domain,$name)=&Apache::lonxml::whichuser();
314: my $allowed=&Apache::lonnet::allowed('mgr',$courseid);
315: if ($allowed) {
316: &Apache::response::setup_params('dataresponse',$safeeval);
317: my $partid = $Apache::inputtags::part;
318: my $id = $Apache::inputtags::response['-1'];
319: my $response = $ENV{'form.HWVAL_'.$id};
320: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
321: if ( $response =~ /[^\s]/) {
322: $Apache::lonhomework::results{"resource.$partid.$id.$name"}=$response;
323: $Apache::lonhomework::results{"resource.$partid.$id.submission"}=$response;
324: $Apache::lonhomework::results{"resource.$partid.$id.awarddetail"}='SUBMITTED';
325: }
326: } else {
327: $result='Not Permitted to change values.'
328: }
329: }
330: }
331: &Apache::response::end_response;
332: return $result;
333: }
334:
335: sub decide_package {
336: my ($tagstack)=@_;
337: my $package;
338: if ($$tagstack[-1] eq 'parameter') {
339: $package='part';
340: } else {
341: my $i=-1;
342: while (defined($$tagstack[$i])) {
343: if ($$tagstack[$i] =~ /(response|hint)$/) {
344: $package=$$tagstack[$i];
345: last;
346: }
347: $i--;
348: }
349: }
350: return $package;
351: }
352:
353: sub start_responseparam {
354: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
355: my $result='';
356: if ($target eq 'meta') {
357: $result = &meta_parameter_write($token->[2]->{'name'},
358: $token->[2]->{'type'},
359: $token->[2]->{'default'},
360: $token->[2]->{'description'});
361: } elsif ($target eq 'edit') {
362: $result.=&Apache::edit::tag_start($target,$token);
363: my $optionlist;
364: my $package=&decide_package($tagstack);
365: foreach my $key (sort(keys(%Apache::lonnet::packagetab))) {
366: if ($key =~ /^\Q$package\E&(.*)&display$/) {
367: $optionlist.='<option value="'.$1.'">'.
368: $Apache::lonnet::packagetab{$key}.'</option>';
369: }
370: }
371: if (defined($optionlist)) {
372: $result.='Use template: <select name="'.
373: &Apache::edit::html_element_name('parameter_package').'">'.
374: '<option value=""></option>'.$optionlist.'</select><br />';
375: }
376: $result.=&Apache::edit::text_arg('Name:','name',$token).
377: &Apache::edit::text_arg('Type:','type',$token).
378: &Apache::edit::text_arg('Description:','description',$token).
379: &Apache::edit::text_arg('Default:','default',$token).
380: "</td></tr>";
381: $result.=&Apache::edit::end_table;
382: } elsif ($target eq 'modified') {
383: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
384: $safeeval,'name','type',
385: 'description','default');
386: my $element=&Apache::edit::html_element_name('parameter_package');
387: if (defined($ENV{"form.$element"}) && $ENV{"form.$element"} ne '') {
388: my $name=$ENV{"form.$element"};
389: my $tag=&decide_package($tagstack);
390: $token->[2]->{'name'}=$name;
391: $token->[2]->{'type'}=
392: $Apache::lonnet::packagetab{"$tag&$name&type"};
393: $token->[2]->{'description'}=
394: $Apache::lonnet::packagetab{"$tag&$name&display"};
395: $token->[2]->{'default'}=
396: $Apache::lonnet::packagetab{"$tag&$name&default"};
397: $constructtag=1;
398: }
399: if ($constructtag) {
400: $result = &Apache::edit::rebuild_tag($token);
401: $result.=&Apache::edit::handle_insert();
402: }
403: } elsif ($target eq 'grade' || $target eq 'answer' || $target eq 'web' ||
404: $target eq 'tex' || $target eq 'analyze' ) {
405: if ($ENV{'request.state'} eq 'construct') {
406: my $name =&Apache::lonxml::get_param('name',$parstack,$safeeval);
407: my $default=&Apache::lonxml::get_param('default',$parstack,
408: $safeeval);
409: if ($name) {$Apache::inputtags::params{$name}=$default;}
410: }
411: }
412: return $result;
413: }
414:
415: sub end_responseparam {
416: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
417: if ($target eq 'edit') { return ('','no'); }
418: return '';
419: }
420:
421: sub start_parameter {
422: my $result = &start_responseparam(@_);
423: return $result;
424: }
425:
426: sub end_parameter {
427: my $result = &end_responseparam(@_);
428: return $result;
429: }
430:
431: sub reset_params {
432: %Apache::inputtags::params=();
433: }
434:
435: sub setup_params {
436: my ($tag,$safeeval) = @_;
437:
438: if ($ENV{'request.state'} eq 'construct') { return; }
439: my %paramlist=();
440: foreach my $key (keys(%Apache::lonnet::packagetab)) {
441: if ($key =~ /^$tag/) {
442: my ($package,$name) = split(/&/,$key);
443: $paramlist{$name}=1;
444: }
445: }
446: foreach my $key (keys(%paramlist)) {
447: my $entry= 'resource.'.$Apache::inputtags::part;
448: if (defined($Apache::inputtags::response[-1])) {
449: $entry.='_'.$Apache::inputtags::response[-1];
450: }
451: $entry.='.'.$key;
452: &Apache::lonxml::debug("looking for $entry");
453: my $value = &Apache::lonnet::EXT("$entry");
454: &Apache::lonxml::debug("$key has value :$value:");
455: if ($value eq 'con_lost' || $value =~ /^error:/) {
456: &Apache::lonxml::debug("using nothing");
457: $Apache::inputtags::params{$key}='';
458: } else {
459: my $string="{return qq\0".$value."\0}";
460: my $newvalue=&Apache::run::run($string,$safeeval,1);
461: if (defined($newvalue)) { $value=$newvalue; }
462: $Apache::inputtags::params{$key}=$value;
463: }
464: }
465: }
466:
467: sub answer_header {
468: my ($type) = @_;
469: my $result;
470: if ($ENV{'form.answer_output_mode'} eq 'tex') {
471: $result = ' \vskip 0 mm \begin{tabular}{|c|}\hline Answer for Part: \verb|'.
472: $Apache::inputtags::part.'| \\\\ \hline ';
473: } else {
474: $result = '<table border="1"><tr><td>Answer for Part:'.
475: $Apache::inputtags::part. '</td>'."\n";
476: }
477: return $result;
478: }
479:
480: sub answer_part {
481: my ($type,$answer) = @_;
482: my $result;
483: if ($ENV{'form.answer_output_mode'} eq 'tex') {
484: $result = ' \verb|'.$answer.'|\\\\ \hline ';
485: } else {
486: $result = '<td>'.$answer.'</td>';
487: }
488: return $result;
489: }
490:
491: sub answer_footer {
492: my ($type) = @_;
493: my $result;
494: if ($ENV{'form.answer_output_mode'} eq 'tex') {
495: $result = ' \end{tabular} \vskip 0 mm ';
496: } else {
497: $result = '</tr></table>';
498: }
499: return $result;
500: }
501:
502: sub showallfoils {
503: if (defined($ENV{'form.showallfoils'})) {
504: my ($symb)=&Apache::lonxml::whichuser();
505: if ($ENV{'request.state'} eq 'construct' ||
506: ($ENV{'user.adv'} && $symb eq '')) {
507: return 1;
508: }
509: }
510: return 0;
511: }
512:
513: sub getresponse {
514: my ($temp,$resulttype)=@_;
515: my $formparm='form.HWVAL_'.$Apache::inputtags::response['-1'];
516: my $response;
517: if (!defined($temp)) {
518: $temp=1;
519: } else {
520: $formparm.=":$temp";
521: }
522: my %let_to_num=('A'=>0,'B'=>1,'C'=>2,'D'=>3,'E'=>4,'F'=>5,'G'=>6,'H'=>7,
523: 'I'=>8,'J'=>9,'K'=>10,'L'=>11,'M'=>12,'N'=>13,'O'=>14,
524: 'P'=>15,'Q'=>16,'R'=>17,'S'=>18,'T'=>19,'U'=>20,'V'=>21,
525: 'W'=>22,'X'=>23,'Y'=>24,'Z'=>25);
526: if ($ENV{'form.submitted'} eq 'scantron') {
527: my $part = $Apache::inputtags::part;
528: my $id = $Apache::inputtags::response[-1];
529: $response = $ENV{'scantron.'.($Apache::lonxml::counter+$temp-1).
530: '.answer'};
531: # save bubbled letter for later
532: $Apache::lonhomework::results{"resource.$part.$id.scantron"}.=
533: $response;
534: if ($resulttype ne 'letter') {
535: if ($resulttype eq 'A is 1') {
536: $response = $let_to_num{$response}+1;
537: } else {
538: $response = $let_to_num{$response};
539: }
540: }
541: } else {
542: $response = $ENV{$formparm};
543: }
544: return $response;
545: }
546:
547: sub repetition {
548: my $id = $Apache::inputtags::part;
549: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
550: my $repetition = int $weight/9;
551: if ($weight % 9 != 0) {$repetition++;}
552: return $repetition;
553: }
554:
555: sub scored_response {
556: my ($part,$id)=@_;
557: my $repetition=&repetition();
558: my $score=0;
559: for (my $i=0;$i<$repetition;$i++) {
560: my $increase=&Apache::response::getresponse($i+1);
561: if ($increase ne '') { $score+=$increase+1; }
562: }
563: my $weight = &Apache::lonnet::EXT("resource.$part.weight");
564: if (!defined($weight) || $weight eq '' || $weight eq 0) { $weight = 1; }
565: my $pcr=$score/$weight;
566: $Apache::lonhomework::results{"resource.$part.$id.awarded"}=$pcr;
567: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
568: 'ASSIGNED_SCORE';
569: return $repetition;
570: }
571:
572: sub whichorder {
573: my ($max,$randomize,$showall,$hash)=@_;
574: #&Apache::lonxml::debug("man $max randomize $randomize");
575: if (!defined(@{ $$hash{'names'} })) { return; }
576: my @names = @{ $$hash{'names'} };
577: my @whichopt =();
578: my (%top,@toplist,%bottom,@bottomlist);
579: if (!($showall || ($randomize eq 'no'))) {
580: my $current=0;
581: foreach my $name (@names) {
582: $current++;
583: if ($$hash{"$name.location"} eq 'top') {
584: $top{$name}=$current;
585: } elsif ($$hash{"$name.location"} eq 'bottom') {
586: $bottom{$name}=$current;
587: }
588: }
589: }
590: my $topcount=0;
591: my $bottomcount=0;
592: while (((scalar(@whichopt)+$topcount+$bottomcount) < $max || $showall)
593: && ($#names > -1)) {
594: #&Apache::lonxml::debug("Have $#whichopt max is $max");
595: my $aopt;
596: if ($showall || ($randomize eq 'no')) {
597: $aopt=0;
598: } else {
599: $aopt=int(&Math::Random::random_uniform() * ($#names+1));
600: }
601: #&Apache::lonxml::debug("From $#whichopt $max $#names elms, picking $aopt");
602: $aopt=splice(@names,$aopt,1);
603: #&Apache::lonxml::debug("Picked $aopt");
604: if ($top{$aopt}) {
605: $toplist[$top{$aopt}]=$aopt;
606: $topcount++;
607: } elsif ($bottom{$aopt}) {
608: $bottomlist[$bottom{$aopt}]=$aopt;
609: $bottomcount++;
610: } else {
611: push (@whichopt,$aopt);
612: }
613: }
614: for (my $i=0;$i<=$#toplist;$i++) {
615: if ($toplist[$i]) { unshift(@whichopt,$toplist[$i]) }
616: }
617: for (my $i=0;$i<=$#bottomlist;$i++) {
618: if ($bottomlist[$i]) { push(@whichopt,$bottomlist[$i]) }
619: }
620: return @whichopt;
621: }
622:
623: sub show_answer {
624: my $part = $Apache::inputtags::part;
625: my $award = $Apache::lonhomework::history{"resource.$part.solved"};
626: my $status = $Apache::inputtags::status[-1];
627: return ( ($award =~ /^correct/
628: && lc($Apache::lonhomework::problemstatus) ne 'no')
629: || $status eq "SHOW_ANSWER");
630: }
631:
632: sub analyze_store_foilgroup {
633: my ($shown,$attrs)=@_;
634: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
635: foreach my $name (@{ $Apache::response::foilgroup{'names'} }) {
636: if (defined($Apache::lonhomework::analyze{"$part_id.foil.value.$name"})) { next; }
637: push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },$name);
638: foreach my $attr (@$attrs) {
639: $Apache::lonhomework::analyze{"$part_id.foil.".$attr.".$name"} =
640: $Apache::response::foilgroup{"$name.".$attr};
641: }
642: }
643: push (@{ $Apache::lonhomework::analyze{"$part_id.shown"} }, @{ $shown });
644: }
645:
646: sub check_if_computed {
647: my ($token,$parstack,$safeeval,$name)=@_;
648: my $value = &Apache::lonxml::get_param($name,$parstack,$safeeval);
649: if ($value ne $token->[2]{$name}) {
650: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
651: $Apache::lonhomework::analyze{"$part_id.answercomputed"} = 1;
652: }
653: }
654:
655: sub pick_foil_for_concept {
656: my ($target,$attrs,$hinthash,$parstack,$safeeval)=@_;
657: if (not defined(@{ $Apache::response::conceptgroup{'names'} })) { return; }
658: my @names = @{ $Apache::response::conceptgroup{'names'} };
659: my $pick=int(&Math::Random::random_uniform() * ($#names+1));
660: my $name=$names[$pick];
661: push @{ $Apache::response::foilgroup{'names'} }, $name;
662: foreach my $attr (@$attrs) {
663: $Apache::response::foilgroup{"$name.".$attr} =
664: $Apache::response::conceptgroup{"$name.".$attr};
665: }
666: my $concept = &Apache::lonxml::get_param('concept',$parstack,$safeeval);
667: $Apache::response::foilgroup{"$name.concept"} = $concept;
668: &Apache::lonxml::debug("Selecting $name in $concept");
669: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
670: if ($target eq 'analyze') {
671: push (@{ $Apache::lonhomework::analyze{"$part_id.concepts"} },
672: $concept);
673: $Apache::lonhomework::analyze{"$part_id.concept.$concept"}=
674: $Apache::response::conceptgroup{'names'};
675: foreach my $name (@{ $Apache::response::conceptgroup{'names'} }) {
676: push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },
677: $name);
678: foreach my $attr (@$attrs) {
679: $Apache::lonhomework::analyze{"$part_id.foil.$attr.$name"}=
680: $Apache::response::conceptgroup{"$name.$attr"};
681: }
682: }
683: }
684: push(@{ $hinthash->{"$part_id.concepts"} },$concept);
685: $hinthash->{"$part_id.concept.$concept"}=
686: $Apache::response::conceptgroup{'names'};
687:
688: }
689:
690: sub get_response_param {
691: my ($id,$name,$default)=@_;
692: my $parameter;
693: if ($ENV{'request.state'} eq 'construct' &&
694: defined($Apache::inputtags::params{$name})) {
695: $parameter=$Apache::inputtags::params{$name};
696: } else {
697: $parameter=&Apache::lonnet::EXT("resource.$id.$name");
698: }
699: if (!defined($parameter) || $parameter eq '') {
700: $parameter = $default;
701: }
702: return $parameter;
703: }
704:
705: 1;
706: __END__
707:
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to response.pm CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / loncom / homework