Annotation of loncom/homework/response.pm, revision 1.86
1.38 albertel 1: # The LearningOnline Network with CAPA
1.1 albertel 2: # various response type definitons response definition
1.53 albertel 3: #
1.86 ! albertel 4: # $Id: response.pm,v 1.85 2003/09/22 20:49:01 albertel Exp $
1.53 albertel 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: #
1.7 www 28: # 11/23,11/24,11/28 Gerd Kortemeyer
1.38 albertel 29: # Guy Albertelli
1.39 www 30: # 08/04,08/07 Gerd Kortemeyer
1.5 www 31:
1.1 albertel 32: package Apache::response;
33: use strict;
34:
1.57 harris41 35: BEGIN {
1.73 albertel 36: &Apache::lonxml::register('Apache::response',('responseparam','parameter','dataresponse'));
1.1 albertel 37: }
38:
1.13 albertel 39: sub start_response {
1.73 albertel 40: my ($parstack,$safeeval)=@_;
41: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
42: if ($id eq '') { $id = $Apache::lonxml::curdepth; }
43: if ($#Apache::inputtags::import > -1) {
44: &Apache::lonxml::debug("Turning :$id: into");
45: $id = join('_',@Apache::inputtags::import).'_'.$id;
46: &Apache::lonxml::debug("New :$id:");
47: }
48: push (@Apache::inputtags::response,$id);
49: push (@Apache::inputtags::responselist,$id);
50: @Apache::inputtags::inputlist=();
51: return $id;
1.13 albertel 52: }
53:
54: sub end_response {
1.79 albertel 55: #pop @Apache::inputtags::response;
1.73 albertel 56: @Apache::inputtags::inputlist=();
57: return '';
1.13 albertel 58: }
59:
1.41 albertel 60: sub start_hintresponse {
1.73 albertel 61: my ($parstack,$safeeval)=@_;
62: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
63: if ($id eq '') { $id = $Apache::lonxml::curdepth; }
64: push (@Apache::inputtags::response,$id);
1.79 albertel 65: push (@Apache::inputtags::responselist,$id);
1.73 albertel 66: push (@Apache::inputtags::paramstack,[%Apache::inputtags::params]);
67: return $id;
1.41 albertel 68: }
69:
70: sub end_hintresponse {
1.73 albertel 71: pop @Apache::inputtags::response;
72: if (defined($Apache::inputtags::paramstack[-1])) {
73: %Apache::inputtags::params=
74: @{ pop(@Apache::inputtags::paramstack) };
75: }
76: return '';
1.41 albertel 77: }
78:
1.38 albertel 79: # used by response to set the non-safe space random number generator to something
80: # that is stable and unique based on the part number and response number
1.26 albertel 81: sub setrandomnumber {
1.73 albertel 82: my $rndseed;
83: if ($ENV{'request.state'} eq "construct") {
84: $rndseed=$ENV{'form.rndseed'};
85: if (!$rndseed) { $rndseed=time; }
86: } else {
1.74 albertel 87: $rndseed=&Apache::lonnet::rndseed();
1.73 albertel 88: }
89: &Apache::lonxml::debug("randseed $rndseed");
90: # $rndseed=unpack("%32i",$rndseed);
1.74 albertel 91: my $rndmod=(&Apache::lonnet::numval($Apache::inputtags::part) << 10);
1.73 albertel 92: if (defined($Apache::inputtags::response['-1'])) {
1.74 albertel 93: $rndmod+=&Apache::lonnet::numval($Apache::inputtags::response[-1]);
1.73 albertel 94: }
1.74 albertel 95: if ($rndseed =~/,/) {
1.82 albertel 96: {
97: use integer;
98: my ($num1,$num2)=split(/,/,$rndseed);
99: $num1+=$rndmod;
100: $num2+=$rndmod;
101: $rndseed="$num1,$num2";
102: }
1.74 albertel 103: } else {
104: $rndseed+=$rndmod;
105: }
106: &Apache::lonnet::setup_random_from_rndseed($rndseed);
1.73 albertel 107: &Apache::lonxml::debug("randseed $rndseed");
108: return '';
1.26 albertel 109: }
110:
1.7 www 111: sub meta_parameter_write {
1.38 albertel 112: my ($name,$type,$default,$display)=@_;
1.41 albertel 113: my $partref=$Apache::inputtags::part;
114: my $result='<parameter part="'.$Apache::inputtags::part.'"';
115: if (defined($Apache::inputtags::response[-1])) {
1.73 albertel 116: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
117: $partref.='_'.$Apache::inputtags::response[-1];
1.41 albertel 118: }
119: $result.= ' name="'.$name.'"'.
120: ' type="'.$type.'"'.
121: ($default?' default="'.$default.'"':'').
122: ($display?' display="'.$display.' [Part: '.$partref.']"':'')
123: .'></parameter>'
124: ."\n";
125: return $result;
1.33 www 126: }
127:
128: sub meta_package_write {
129: my $name=shift;
1.41 albertel 130: my $result = '<parameter part="'.$Apache::inputtags::part.'"';
131: if(defined($Apache::inputtags::response[-1])) {
1.73 albertel 132: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
1.41 albertel 133: }
134: $result.=' package="'.$name.'"></parameter>'."\n";
135: return $result;
1.7 www 136: }
137:
138: sub meta_stores_write {
1.10 www 139: my ($name,$type,$display)=@_;
1.41 albertel 140: my $partref=$Apache::inputtags::part;
141: my $result = '<stores part="'.$Apache::inputtags::part.'"';
142: if (defined($Apache::inputtags::response[-1])) {
1.73 albertel 143: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
144: $partref.='_'.$Apache::inputtags::response[-1];
1.41 albertel 145: }
146: $result.= ' name="'.$name.'"'.
147: ' type="'.$type.'"'.
148: ' display="'.$display.' [Part: '.$partref.']"'.
149: "></stores>\n";
1.7 www 150: }
151:
152: sub mandatory_part_meta {
153: #
154: # Autogenerate metadata for mandatory
155: # input (from RAT or lonparmset) and
156: # output (to lonspreadsheet)
157: # of each part
158: #
1.73 albertel 159: return
1.34 www 160: # &meta_parameter_write('opendate','date_start','',
161: # 'Opening Date').
162: # &meta_parameter_write('duedate','date_end','',
163: # 'Due Date').
164: # &meta_parameter_write('answerdate','date_start','',
165: # 'Show Answer Date').
166: # &meta_parameter_write('weight','int_zeropos','',
167: # 'Available Points').
168: # &meta_parameter_write('maxtries','int_pos','',
169: # 'Maximum Number of Tries').
1.73 albertel 170: &meta_package_write('part').
171: &meta_stores_write('solved','string',
172: 'Problem Status').
173: &meta_stores_write('tries','int_zeropos',
174: 'Number of Attempts').
175: &meta_stores_write('awarded','float',
176: 'Partial Credit Factor');
1.7 www 177: #
178: # Note: responseid-specific data 'submission' and 'awarddetail'
179: # not available to spreadsheet -> skip here
180: #
1.86 ! albertel 181: }
! 182:
! 183: sub meta_part_order {
! 184: if (@Apache::inputtags::partlist) {
! 185: my @parts=@Apache::inputtags::partlist;
! 186: shift(@parts);
! 187: return '<partorder>'.join(',',@parts).'</partorder>';
! 188: } else {
! 189: return '<partorder>0</partorder>';
! 190: }
1.14 albertel 191: }
192:
1.15 albertel 193: sub check_for_previous {
1.73 albertel 194: my ($curresponse,$partid,$id) = @_;
195: my %previous;
196: $previous{'used'} = 0;
197: foreach my $key (sort(keys(%Apache::lonhomework::history))) {
198: if ($key =~ /resource\.$partid\.$id\.submission/) {
199: &Apache::lonxml::debug("Trying $key");
200: my $pastresponse=$Apache::lonhomework::history{$key};
201: if ($pastresponse eq $curresponse) {
202: $previous{'used'} = 1;
203: my $history;
204: if ( $key =~ /^(\d+):/ ) {
205: $history=$1;
206: $previous{'award'} = $Apache::lonhomework::history{"$history:resource.$partid.$id.awarddetail"};
207: $previous{'last'}='0';
208: push(@{ $previous{'version'} },$history);
209: } else {
210: $previous{'award'} = $Apache::lonhomework::history{"resource.$partid.$id.awarddetail"};
211: $previous{'last'}='1';
212: }
213: if (! $previous{'award'} ) { $previous{'award'} = 'UNKNOWN'; }
214: &Apache::lonxml::debug("got a match :$previous{'award'}:$previous{'used'}:");
215: }
1.32 albertel 216: }
1.73 albertel 217: }
218: &Apache::lonhomework::showhash(%previous);
219: return %previous;
1.54 albertel 220: }
221:
222: sub handle_previous {
1.73 albertel 223: my ($previous,$ad)=@_;
224: if ($$previous{'used'} && ($$previous{'award'} eq $ad) ) {
225: if ($$previous{'last'}) {
226: push(@Apache::inputtags::previous,'PREVIOUSLY_LAST');
227: } else {
228: push(@Apache::inputtags::previous,'PREVIOUSLY_USED');
229: }
230: push(@Apache::inputtags::previous_version,$$previous{'version'});
1.54 albertel 231: }
1.44 albertel 232: }
233:
1.45 albertel 234: sub view_or_modify {
1.73 albertel 235: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
236: my $myself=0;
237: if ( ($name eq $ENV{'user.name'}) && ($domain eq $ENV{'user.domain'}) ) {
238: $myself=1;
239: }
240: my $vgr=&Apache::lonnet::allowed('vgr',$courseid);
241: my $mgr=&Apache::lonnet::allowed('vgr',$courseid);
242: if ($mgr) { return "M"; }
243: if ($vgr) { return "V"; }
244: if ($myself) { return "V"; }
245: return '';
1.45 albertel 246: }
247:
1.44 albertel 248: sub start_dataresponse {
1.73 albertel 249: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
250: my $id = &Apache::response::start_response($parstack,$safeeval);
251: my $result;
252: if ($target eq 'web') {
253: $result = $token->[2]->{'display'}.':';
254: } elsif ($target eq 'meta') {
255: $result = &Apache::response::meta_stores_write($token->[2]->{'name'},
256: $token->[2]->{'type'},
257: $token->[2]->{'display'});
258: $result .= &Apache::response::meta_package_write('dataresponse');
259: }
260: return $result;
1.44 albertel 261: }
262:
263: sub end_dataresponse {
1.73 albertel 264: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
265: my $result;
266: if ( $target eq 'web' ) {
267: } elsif ($target eq 'grade' ) {
268: if ( defined $ENV{'form.submitted'}) {
269: my ($symb,$courseid,$domain,$name)=&Apache::lonxml::whichuser();
270: my $allowed=&Apache::lonnet::allowed('mgr',$courseid);
271: if ($allowed) {
272: &Apache::response::setup_params('dataresponse');
273: my $partid = $Apache::inputtags::part;
274: my $id = $Apache::inputtags::response['-1'];
275: my $response = $ENV{'form.HWVAL_'.$id};
276: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
277: if ( $response =~ /[^\s]/) {
278: $Apache::lonhomework::results{"resource.$partid.$id.$name"}=$response;
279: $Apache::lonhomework::results{"resource.$partid.$id.submission"}=$response;
280: $Apache::lonhomework::results{"resource.$partid.$id.awarddetail"}='SUBMITTED';
281: }
282: } else {
283: $result='Not Permitted to change values.'
284: }
1.45 albertel 285: }
1.73 albertel 286: }
287: &Apache::response::end_response;
288: return $result;
1.3 albertel 289: }
290:
1.83 albertel 291: sub decide_package {
292: my ($tagstack)=@_;
293: my $package;
294: if ($$tagstack[-1] eq 'parameter') {
295: $package='part';
296: } else {
297: my $i=-1;
298: while (defined($$tagstack[$i])) {
299: if ($$tagstack[$i] =~ /(response|hint)$/) {
300: $package=$$tagstack[$i];
301: last;
302: }
303: $i--;
304: }
305: }
306: return $package;
307: }
308:
1.3 albertel 309: sub start_responseparam {
1.73 albertel 310: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
311: my $result='';
312: if ($target eq 'meta') {
313: $result = &meta_parameter_write($token->[2]->{'name'},
314: $token->[2]->{'type'},
315: $token->[2]->{'default'},
316: $token->[2]->{'description'});
317: } elsif ($target eq 'edit') {
318: $result.=&Apache::edit::tag_start($target,$token);
1.83 albertel 319: my $optionlist;
320: my $package=&decide_package($tagstack);
321: foreach my $key (sort(keys(%Apache::lonnet::packagetab))) {
322: if ($key =~ /^\Q$package\E&(.*)&display$/) {
323: $optionlist.='<option value="'.$1.'">'.
324: $Apache::lonnet::packagetab{$key}.'</option>';
325: }
326: }
327: if (defined($optionlist)) {
328: $result.='Use template: <select name="'.
329: &Apache::edit::html_element_name('parameter_package').'">'.
330: '<option value=""></option>'.$optionlist.'</select><br />';
331: }
1.73 albertel 332: $result.=&Apache::edit::text_arg('Name:','name',$token).
333: &Apache::edit::text_arg('Type:','type',$token).
334: &Apache::edit::text_arg('Description:','description',$token).
335: &Apache::edit::text_arg('Default:','default',$token).
336: "</td></tr>";
337: $result.=&Apache::edit::end_table;
338: } elsif ($target eq 'modified') {
1.83 albertel 339: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
340: $safeeval,'name','type',
341: 'description','default');
342: my $element=&Apache::edit::html_element_name('parameter_package');
343: if (defined($ENV{"form.$element"}) && $ENV{"form.$element"} ne '') {
344: my $name=$ENV{"form.$element"};
345: my $tag=&decide_package($tagstack);
346: $token->[2]->{'name'}=$name;
347: $token->[2]->{'type'}=
348: $Apache::lonnet::packagetab{"$tag&$name&type"};
349: $token->[2]->{'description'}=
350: $Apache::lonnet::packagetab{"$tag&$name&display"};
351: $token->[2]->{'default'}=
352: $Apache::lonnet::packagetab{"$tag&$name&default"};
353: $constructtag=1;
354: }
1.73 albertel 355: if ($constructtag) {
356: $result = &Apache::edit::rebuild_tag($token);
357: $result.=&Apache::edit::handle_insert();
358: }
359: } elsif ($target eq 'grade' || $target eq 'answer' || $target eq 'web' ||
360: $target eq 'tex' || $target eq 'analyze' ) {
361: if ($ENV{'request.state'} eq 'construct') {
362: my $name =&Apache::lonxml::get_param('name',$parstack,$safeeval);
363: my $default=&Apache::lonxml::get_param('default',$parstack,
364: $safeeval);
365: if ($name) {$Apache::inputtags::params{$name}=$default;}
366: }
1.52 albertel 367: }
1.73 albertel 368: return $result;
1.3 albertel 369: }
370:
371: sub end_responseparam {
1.73 albertel 372: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
373: if ($target eq 'edit') { return ('','no'); }
374: return '';
1.55 albertel 375: }
376:
377: sub start_parameter {
1.73 albertel 378: my $result = &start_responseparam(@_);
379: return $result;
1.55 albertel 380: }
381:
382: sub end_parameter {
1.73 albertel 383: my $result = &end_responseparam(@_);
384: return $result;
1.42 albertel 385: }
386:
1.67 albertel 387: sub reset_params {
388: %Apache::inputtags::params=();
389: }
390:
1.42 albertel 391: sub setup_params {
1.73 albertel 392: my ($tag) = @_;
1.42 albertel 393:
1.73 albertel 394: if ($ENV{'request.state'} eq 'construct') { return; }
395: my %paramlist=();
396: foreach my $key (keys(%Apache::lonnet::packagetab)) {
397: if ($key =~ /^$tag/) {
398: my ($package,$name) = split(/&/,$key);
399: $paramlist{$name}=1;
400: }
1.42 albertel 401: }
1.73 albertel 402: foreach my $key (keys(%paramlist)) {
403: my $entry= 'resource.'.$Apache::inputtags::part;
404: if (defined($Apache::inputtags::response[-1])) {
405: $entry.='_'.$Apache::inputtags::response[-1];
406: }
407: $entry.='.'.$key;
408: &Apache::lonxml::debug("looking for $entry");
409: my $value = &Apache::lonnet::EXT("$entry");
410: &Apache::lonxml::debug("$key has value :$value:");
411: if ($value eq 'con_lost' || $value =~ /^error:/) {
412: &Apache::lonxml::debug("using nothing");
413: $Apache::inputtags::params{$key}='';
414: } else {
415: &Apache::lonxml::debug("using value");
416: $Apache::inputtags::params{$key}=$value;
417: }
1.42 albertel 418: }
1.48 albertel 419: }
420:
421: sub answer_header {
1.73 albertel 422: my ($type) = @_;
423: my $result;
1.77 albertel 424: if ($ENV{'form.answer_output_mode'} eq 'tex') {
1.84 sakharuk 425: $result = ' \vskip 0 mm \begin{tabular}{|c|}\hline Answer for Part: \verb|'.
426: $Apache::inputtags::part.'| \\\\ \hline ';
1.73 albertel 427: } else {
1.80 albertel 428: $result = '<table border="1"><tr><td>Answer for Part:'.
429: $Apache::inputtags::part. '</td>'."\n";
1.73 albertel 430: }
431: return $result;
1.48 albertel 432: }
433:
434: sub answer_part {
1.73 albertel 435: my ($type,$answer) = @_;
436: my $result;
1.77 albertel 437: if ($ENV{'form.answer_output_mode'} eq 'tex') {
1.81 sakharuk 438: $result = ' \verb|'.$answer.'|\\\\ \hline ';
1.73 albertel 439: } else {
1.80 albertel 440: $result = '<td>'.$answer.'</td>';
1.73 albertel 441: }
442: return $result;
1.48 albertel 443: }
444:
445: sub answer_footer {
1.73 albertel 446: my ($type) = @_;
447: my $result;
1.77 albertel 448: if ($ENV{'form.answer_output_mode'} eq 'tex') {
1.75 sakharuk 449: $result = ' \end{tabular} \vskip 0 mm ';
1.73 albertel 450: } else {
1.80 albertel 451: $result = '</tr></table>';
1.73 albertel 452: }
453: return $result;
1.1 albertel 454: }
1.2 albertel 455:
1.62 albertel 456: sub showallfoils {
1.73 albertel 457: my $return=0;
458: if (defined($ENV{'form.showallfoils'}) &&
459: $ENV{'request.state'} eq 'construct') {
460: $return=1;
461: }
462: return $return;
1.70 albertel 463: }
464:
465: sub getresponse {
466: my ($temp)=@_;
467: my $formparm='form.HWVAL_'.$Apache::inputtags::response['-1'];
468: my $response;
469: if (!defined($temp)) {
470: $temp=1;
471: } else {
472: $formparm.=":$temp";
473: }
474: my %let_to_num=('A'=>0,'B'=>1,'C'=>2,'D'=>3,'E'=>4,'F'=>5,'G'=>6,'H'=>7,
475: 'I'=>8,'J'=>9,'K'=>10,'L'=>11,'M'=>12,'N'=>13,'O'=>14,
476: 'P'=>15,'Q'=>16,'R'=>17,'S'=>18,'T'=>19,'U'=>20,'V'=>21,
477: 'W'=>22,'X'=>23,'Y'=>24,'Z'=>25);
478: if ($ENV{'form.submitted'} eq 'scantron') {
1.71 albertel 479: my $part = $Apache::inputtags::part;
480: my $id = $Apache::inputtags::response[-1];
1.70 albertel 481: $response = $ENV{'scantron.'.($Apache::lonxml::counter+$temp-1).
482: '.answer'};
1.71 albertel 483: # save bubbled letter for later
484: $Apache::lonhomework::results{"resource.$part.$id.scantron"}.=
485: $response;
1.70 albertel 486: $response = $let_to_num{$response};
487: } else {
488: $response = $ENV{$formparm};
489: }
490: return $response;
1.62 albertel 491: }
1.71 albertel 492:
493: sub repetition {
494: my $id = $Apache::inputtags::part;
495: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
496: my $repetition = int $weight/9;
497: if ($weight % 9 != 0) {$repetition++;}
1.72 albertel 498: return $repetition;
499: }
500:
501: sub scored_response {
502: my ($part,$id)=@_;
503: my $repetition=&repetition();
504: my $score=0;
505: for (my $i=0;$i<$repetition;$i++) {
506: my $increase=&Apache::response::getresponse($i+1);
507: if ($increase ne '') { $score+=$increase+1; }
508: }
509: my $weight = &Apache::lonnet::EXT("resource.$part.weight");
510: my $pcr=$score/$weight;
511: $Apache::lonhomework::results{"resource.$part.$id.awarded"}=$pcr;
512: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
513: 'ASSIGNED_SCORE';
1.71 albertel 514: return $repetition;
1.78 albertel 515: }
516:
517: sub whichorder {
518: my ($max,$randomize,$showall,$hash)=@_;
519: #&Apache::lonxml::debug("man $max randomize $randomize");
520: if (!defined(@{ $$hash{'names'} })) { return; }
521: my @names = @{ $$hash{'names'} };
522: my @whichopt =();
523: my (%top,@toplist,%bottom,@bottomlist);
524: if (!($showall || ($randomize eq 'no'))) {
525: my $current=0;
526: foreach my $name (@names) {
527: $current++;
528: if ($$hash{"$name.location"} eq 'top') {
529: $top{$name}=$current;
530: } elsif ($$hash{"$name.location"} eq 'bottom') {
531: $bottom{$name}=$current;
532: }
533: }
534: }
535: my $topcount=0;
536: my $bottomcount=0;
537: while (((scalar(@whichopt)+$topcount+$bottomcount) < $max || $showall)
538: && ($#names > -1)) {
539: #&Apache::lonxml::debug("Have $#whichopt max is $max");
540: my $aopt;
541: if ($showall || ($randomize eq 'no')) {
542: $aopt=0;
543: } else {
544: $aopt=int(&Math::Random::random_uniform() * ($#names+1));
545: }
546: #&Apache::lonxml::debug("From $#whichopt $max $#names elms, picking $aopt");
547: $aopt=splice(@names,$aopt,1);
548: #&Apache::lonxml::debug("Picked $aopt");
549: if ($top{$aopt}) {
550: $toplist[$top{$aopt}]=$aopt;
551: $topcount++;
552: } elsif ($bottom{$aopt}) {
553: $bottomlist[$bottom{$aopt}]=$aopt;
554: $bottomcount++;
555: } else {
556: push (@whichopt,$aopt);
557: }
558: }
559: for (my $i=0;$i<=$#toplist;$i++) {
560: if ($toplist[$i]) { unshift(@whichopt,$toplist[$i]) }
561: }
562: for (my $i=0;$i<=$#bottomlist;$i++) {
563: if ($bottomlist[$i]) { push(@whichopt,$bottomlist[$i]) }
564: }
565:
566: return @whichopt;
1.71 albertel 567: }
568:
1.85 albertel 569: sub show_answer {
570: my $part = $Apache::inputtags::part;
571: my $award = $Apache::lonhomework::history{"resource.$part.solved"};
572: my $status = $Apache::inputtags::status[-1];
573: return ( ($award =~ /^correct/
574: && lc($Apache::lonhomework::problemstatus) ne 'no')
575: || $status eq "SHOW_ANSWER");
576: }
1.1 albertel 577: 1;
578: __END__
1.38 albertel 579:
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