1: # The LearningOnline Network with CAPA
2: # various response type definitons response definition
3: #
4: # $Id: response.pm,v 1.207 2008/11/24 16:53:26 jms 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: use Apache::lonnet;
33: use Apache::lonmaxima();
34:
35: BEGIN {
36: &Apache::lonxml::register('Apache::response',('responseparam','parameter','dataresponse','customresponse','mathresponse'));
37: }
38:
39: sub start_response {
40: my ($parstack,$safeeval)=@_;
41: my $id = &Apache::lonxml::get_id($parstack,$safeeval);
42: if ($#Apache::inputtags::import > -1) {
43: &Apache::lonxml::debug("Turning :$id: into");
44: $id = join('_',@Apache::inputtags::import).'_'.$id;
45: &Apache::lonxml::debug("New :$id:");
46: }
47: push (@Apache::inputtags::response,$id);
48: push (@Apache::inputtags::responselist,$id);
49: @Apache::inputtags::inputlist=();
50: if ($Apache::inputtags::part eq '' &&
51: !$Apache::lonhomework::ignore_response_errors) {
52: &Apache::lonxml::error(&HTML::Entities::encode(&mt("Found a <*response> outside of a <part> in a <part>ed problem"),'<>&"'));
53: }
54: if ($Apache::inputtags::response_with_no_part &&
55: $Apache::inputtags::part ne '0') {
56: &Apache::lonxml::error(&HTML::Entities::encode(&mt("<*response>s are both inside of <part> and outside of <part>, this is not a valid problem, errors in grading may occur."),'<>&"').'<br />');
57: }
58: if ($Apache::inputtags::part eq '0') {
59: $Apache::inputtags::response_with_no_part=1;
60: }
61: return $id;
62: }
63:
64: sub end_response {
65: #pop @Apache::inputtags::response;
66: @Apache::inputtags::inputlist=();
67: return '';
68: }
69:
70: sub start_hintresponse {
71: my ($parstack,$safeeval)=@_;
72: my $id = &Apache::lonxml::get_id($parstack,$safeeval);
73: push (@Apache::inputtags::hint,$id);
74: push (@Apache::inputtags::hintlist,$id);
75: push (@Apache::inputtags::paramstack,[%Apache::inputtags::params]);
76: return $id;
77: }
78:
79: sub end_hintresponse {
80: pop @Apache::inputtags::hint;
81: if (defined($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(@$seed);
109: } else {
110: &Apache::lonxml::error("Unable to restore random algorithm.");
111: }
112: }
113:
114: sub setrandomnumber {
115: my ($ignore_id2) = @_;
116: my $rndseed;
117: $rndseed=&Apache::structuretags::setup_rndseed();
118: if (!defined($rndseed)) { $rndseed=&Apache::lonnet::rndseed(); }
119: &Apache::lonxml::debug("randseed $rndseed");
120: # $rndseed=unpack("%32i",$rndseed);
121: my $rand_alg=&Apache::lonnet::get_rand_alg();
122: my ($rndmod,$rndmod2);
123:
124: my ($id1,$id2,$shift_amt);
125: if ($Apache::lonhomework::parsing_a_problem) {
126: $id1=$Apache::inputtags::part;
127: if (defined($Apache::inputtags::response[-1])) {
128: $id2=$Apache::inputtags::response[-1];
129: }
130: $shift_amt=scalar(@Apache::inputtags::responselist);
131: } elsif ($Apache::lonhomework::parsing_a_task) {
132: $id1=&Apache::bridgetask::get_dim_id();
133: if (!$ignore_id2 && ref($Apache::bridgetask::instance{$id1})) {
134: $id2=$Apache::bridgetask::instance{$id1}[-1];
135: $shift_amt=scalar(@{$Apache::bridgetask::instance{$id1}});
136: } else {
137: $shift_amt=0;
138: }
139: }
140: &Apache::lonxml::debug("id1: $id1, id2: $id2, shift_amt: $shift_amt");
141: if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
142: $rand_alg eq '64bit2') {
143: $rndmod=(&Apache::lonnet::numval($id1) << 10);
144: if (defined($id2)) { $rndmod+=&Apache::lonnet::numval($id2); }
145: } elsif ($rand_alg eq '64bit3') {
146: $rndmod=(&Apache::lonnet::numval2($id1) << 10);
147: if (defined($id2)) { $rndmod+=&Apache::lonnet::numval2($id2); }
148: } elsif ($rand_alg eq '64bit4') {
149: my $shift=(4*$shift_amt)%30;
150: $rndmod=(&Apache::lonnet::numval3($id1) << (($shift+15)%30));
151: if (defined($id2)) {
152: $rndmod+=(&Apache::lonnet::numval3($id2) << $shift );
153: }
154: } else {
155: ($rndmod,$rndmod2)=&Apache::lonnet::digest("$id1,$id2");
156: }
157:
158: if ($rndseed =~/([,:])/) {
159: my $char=$1;
160: use integer;
161: my ($num1,$num2)=split(/\Q$char\E/,$rndseed);
162: $num1+=$rndmod;
163: $num2+= ((defined($rndmod2)) ? $rndmod2 : $rndmod);
164: if($Apache::lonnet::_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
165: $rndseed=$num1.$char.$num2;
166: } else {
167: $rndseed+=$rndmod;
168: if($Apache::lonnet::_64bit) {
169: use integer;
170: $rndseed=(($rndseed<<32)>>32);
171: }
172: }
173: &Apache::lonxml::debug("randseed $rndmod $rndseed");
174: &Apache::lonnet::setup_random_from_rndseed($rndseed);
175: return '';
176: }
177:
178: sub meta_parameter_write {
179: my ($name,$type,$default,$display)=@_;
180: my $partref=$Apache::inputtags::part;
181: my $result='<parameter part="'.$Apache::inputtags::part.'"';
182: if (defined($Apache::inputtags::response[-1])) {
183: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
184: $partref.='_'.$Apache::inputtags::response[-1];
185: }
186: $result.= ' name="'.$name.'"'.
187: ' type="'.$type.'"'.
188: (defined($default)?' default="'.$default.'"':'').
189: (defined($display)?' display="'.$display.' [Part: '.$partref.']"':'')
190: .'></parameter>'
191: ."\n";
192: return $result;
193: }
194:
195: sub meta_package_write {
196: my $name=shift;
197: my $result = '<parameter part="'.$Apache::inputtags::part.'"';
198: if(defined($Apache::inputtags::response[-1])) {
199: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
200: }
201: $result.=' package="'.$name.'"></parameter>'."\n";
202: return $result;
203: }
204:
205: sub meta_stores_write {
206: my ($name,$type,$display)=@_;
207: my $partref=$Apache::inputtags::part;
208: my $result = '<stores part="'.$Apache::inputtags::part.'"';
209: if (defined($Apache::inputtags::response[-1])) {
210: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
211: $partref.='_'.$Apache::inputtags::response[-1];
212: }
213: $result.= ' name="'.$name.'"'.
214: ' type="'.$type.'"'.
215: ' display="'.$display.' [Part: '.$partref.']"'.
216: "></stores>\n";
217: }
218:
219: sub mandatory_part_meta {
220: =pod
221:
222: =item meta_part_order
223:
224: Autogenerate metadata for mandatory
225: input (from RAT or lonparmset) and
226: output (to lonspreadsheet)
227: of each part
228: #
229: return
230: &meta_parameter_write('opendate','date_start','',
231: 'Opening Date').
232: &meta_parameter_write('duedate','date_end','',
233: 'Due Date').
234: &meta_parameter_write('answerdate','date_start','',
235: 'Show Answer Date').
236: &meta_parameter_write('weight','int_zeropos','',
237: 'Available Points').
238: &meta_parameter_write('maxtries','int_pos','',
239: 'Maximum Number of Tries').
240: &meta_package_write('part').
241: &meta_stores_write('solved','string',
242: 'Problem Status').
243: &meta_stores_write('tries','int_zeropos',
244: 'Number of Attempts').
245: &meta_stores_write('awarded','float',
246: 'Partial Credit Factor');
247:
248: Note: responseid-specific data 'submission' and 'awarddetail'
249: not available to spreadsheet -> skip here
250:
251: =cut
252:
253: }
254:
255: sub meta_part_order {
256: if (@Apache::inputtags::partlist) {
257: my @parts=@Apache::inputtags::partlist;
258: shift(@parts);
259: return '<partorder>'.join(',',@parts).'</partorder>'."\n";
260: } else {
261: return '<partorder>0</partorder>'."\n";
262: }
263: }
264:
265: sub meta_response_order {
266: if (@Apache::inputtags::responselist) {
267: return '<responseorder>'.join(',',@Apache::inputtags::responselist).
268: '</responseorder>'."\n";
269: }
270: }
271:
272: sub check_for_previous {
273: my ($curresponse,$partid,$id,$last) = @_;
274: my %previous;
275: $previous{'used'} = 0;
276: foreach my $key (sort(keys(%Apache::lonhomework::history))) {
277: if ($key =~ /resource\.$partid\.$id\.submission$/) {
278: if ( $last && $key =~ /^(\d+):/ ) {
279: next if ($1 >= $last);
280: }
281: &Apache::lonxml::debug("Trying $key");
282: my $pastresponse=$Apache::lonhomework::history{$key};
283: if ($pastresponse eq $curresponse) {
284: $previous{'used'} = 1;
285: my $history;
286: if ( $key =~ /^(\d+):/ ) {
287: $history=$1;
288: $previous{'award'} = $Apache::lonhomework::history{"$history:resource.$partid.$id.awarddetail"};
289: $previous{'last'}='0';
290: push(@{ $previous{'version'} },$history);
291: } else {
292: $previous{'award'} = $Apache::lonhomework::history{"resource.$partid.$id.awarddetail"};
293: $previous{'last'}='1';
294: }
295: if (! $previous{'award'} ) { $previous{'award'} = 'UNKNOWN'; }
296: &Apache::lonxml::debug("got a match :$previous{'award'}:$previous{'used'}:");
297: }
298: }
299: }
300: &Apache::lonhomework::showhash(%previous);
301: return %previous;
302: }
303:
304: sub handle_previous {
305: my ($previous,$ad)=@_;
306: if ($$previous{'used'} && ($$previous{'award'} eq $ad) ) {
307: if ($$previous{'last'}) {
308: push(@Apache::inputtags::previous,'PREVIOUSLY_LAST');
309: push(@Apache::inputtags::previous_version,$$previous{'version'});
310: } elsif ($Apache::lonhomework::type ne 'survey') {
311: push(@Apache::inputtags::previous,'PREVIOUSLY_USED');
312: push(@Apache::inputtags::previous_version,$$previous{'version'});
313: }
314: }
315: }
316:
317: sub view_or_modify {
318: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
319: my $myself=0;
320: if ( ($name eq $env{'user.name'}) && ($domain eq $env{'user.domain'}) ) {
321: $myself=1;
322: }
323: my $vgr=&Apache::lonnet::allowed('vgr',$courseid);
324: my $mgr=&Apache::lonnet::allowed('vgr',$courseid);
325: if ($mgr) { return "M"; }
326: if ($vgr) { return "V"; }
327: if ($myself) { return "V"; }
328: return '';
329: }
330:
331: sub start_dataresponse {
332: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
333: my $id = &Apache::response::start_response($parstack,$safeeval);
334: my $result;
335: if ($target eq 'web') {
336: $result = $token->[2]->{'display'}.':';
337: } elsif ($target eq 'meta') {
338: $result = &Apache::response::meta_stores_write($token->[2]->{'name'},
339: $token->[2]->{'type'},
340: $token->[2]->{'display'});
341: $result .= &Apache::response::meta_package_write('dataresponse');
342: }
343: return $result;
344: }
345:
346: sub end_dataresponse {
347: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
348: my $result;
349: if ( $target eq 'web' ) {
350: } elsif ($target eq 'grade' ) {
351: if ( defined $env{'form.submitted'}) {
352: my ($symb,$courseid,$domain,$name)=&Apache::lonnet::whichuser();
353: my $allowed=&Apache::lonnet::allowed('mgr',$courseid);
354: if ($allowed) {
355: &Apache::response::setup_params('dataresponse',$safeeval);
356: my $partid = $Apache::inputtags::part;
357: my $id = $Apache::inputtags::response['-1'];
358: my $response = $env{'form.HWVAL_'.$id};
359: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
360: if ( $response =~ /[^\s]/) {
361: $Apache::lonhomework::results{"resource.$partid.$id.$name"}=$response;
362: $Apache::lonhomework::results{"resource.$partid.$id.submission"}=$response;
363: $Apache::lonhomework::results{"resource.$partid.$id.awarddetail"}='SUBMITTED';
364: }
365: } else {
366: $result='Not Permitted to change values.'
367: }
368: }
369: }
370: &Apache::response::end_response;
371: return $result;
372: }
373:
374: sub start_customresponse {
375: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
376: my $id = &Apache::response::start_response($parstack,$safeeval);
377: push(@Apache::lonxml::namespace,'customresponse');
378: my $result;
379: @Apache::response::custom_answer=();
380: @Apache::response::custom_answer_type=();
381: &Apache::lonxml::register('Apache::response',('answer'));
382: if ($target eq 'web') {
383: if ( &Apache::response::show_answer() ) {
384: my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
385: $safeeval);
386: $Apache::inputtags::answertxt{$id}=[$answer];
387: }
388: } elsif ($target eq 'edit') {
389: $result.=&Apache::edit::tag_start($target,$token);
390: $result.=&Apache::edit::text_arg('String to display for answer:',
391: 'answerdisplay',$token);
392: $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
393: } elsif ($target eq 'modified') {
394: my $constructtag;
395: $constructtag=&Apache::edit::get_new_args($token,$parstack,
396: $safeeval,'answerdisplay');
397: if ($constructtag) {
398: $result = &Apache::edit::rebuild_tag($token);
399: }
400: } elsif ($target eq 'answer' || $target eq 'grade') {
401: &Apache::response::reset_params();
402: } elsif ($target eq 'meta') {
403: $result .= &Apache::response::meta_package_write('customresponse');
404: }
405: return $result;
406: }
407:
408: sub end_customresponse {
409: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
410: my $result;
411: my $part=$Apache::inputtags::part;
412: my $id=$Apache::inputtags::response[-1];
413: if ( $target eq 'grade' && &Apache::response::submitted() ) {
414: my $response = &Apache::response::getresponse();
415: if ($Apache::lonhomework::type eq 'exam' ||
416: &Apache::response::submitted('scantron')) {
417: &Apache::response::scored_response($part,$id);
418: } elsif ( $response =~ /[^\s]/ &&
419: $Apache::response::custom_answer_type[-1] eq 'loncapa/perl') {
420: if (!$Apache::lonxml::default_homework_loaded) {
421: &Apache::lonxml::default_homework_load($safeeval);
422: }
423: my %previous = &Apache::response::check_for_previous($response,
424: $part,$id);
425: $Apache::lonhomework::results{"resource.$part.$id.submission"}=
426: $response;
427: my $error;
428: ${$safeeval->varglob('LONCAPA::customresponse_submission')}=
429: $response;
430:
431: my $award = &Apache::run::run('{ my $submission=$LONCAPA::customresponse_submission;'.$Apache::response::custom_answer[-1].'}',$safeeval);
432: if (!&Apache::inputtags::valid_award($award)) {
433: $error = $award;
434: $award = 'ERROR';
435: }
436: &Apache::response::handle_previous(\%previous,$award);
437: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
438: $award;
439: if ($error) {
440: $Apache::lonhomework::results{"resource.$part.$id.awardmsg"}=
441: $error;
442: }
443: }
444: } elsif ( $target eq 'answer') {
445: $result = &Apache::response::answer_header('customresponse');
446: my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
447: $safeeval);
448: if ($env{'form.answer_output_mode'} ne 'tex') {
449: $answer = '<b>'.$answer.'</b>';
450: }
451: $result .= &Apache::response::answer_part('customresponse',$answer);
452: $result .= &Apache::response::answer_footer('customresponse');
453: }
454: if ($target eq 'web') {
455: &setup_prior_tries_hash(\&format_prior_response_math);
456: }
457: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
458: $target eq 'tex' || $target eq 'analyze') {
459: &Apache::lonxml::increment_counter(&Apache::response::repetition(),
460: "$part.$id");
461: if ($target eq 'analyze') {
462: $Apache::lonhomework::analyze{"$part.$id.type"} = 'customresponse';
463: &Apache::lonhomework::set_bubble_lines();
464: }
465: }
466: pop(@Apache::lonxml::namespace);
467: pop(@Apache::response::custom_answer);
468: pop(@Apache::response::custom_answer_type);
469: &Apache::lonxml::deregister('Apache::response',('answer'));
470: &Apache::response::end_response();
471: return $result;
472: }
473:
474: sub format_prior_response_custom {
475: my ($mode,$answer) =@_;
476: return '<span class="LC_prior_custom">'.
477: &HTML::Entities::encode($answer,'"<>&').'</span>';
478: }
479:
480: sub start_mathresponse {
481: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
482: my $id = &Apache::response::start_response($parstack,$safeeval);
483: push(@Apache::lonxml::namespace,'mathresponse');
484: my $result;
485: @Apache::response::custom_answer=();
486: @Apache::response::custom_answer_type=();
487: &Apache::lonxml::register('Apache::response',('answer'));
488: if ($target eq 'web') {
489: if ( &Apache::response::show_answer() ) {
490: my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
491: $safeeval);
492: $Apache::inputtags::answertxt{$id}=[$answer];
493: }
494:
495: } elsif ($target eq 'edit') {
496: $result.=&Apache::edit::tag_start($target,$token);
497: $result.=&Apache::edit::text_arg('String to display for answer:',
498: 'answerdisplay',$token);
499: $result.=&Apache::edit::select_arg('Algebra System:',
500: 'cas',
501: ['maxima'],
502: $token);
503: $result.=&Apache::edit::text_arg('Argument Array:',
504: 'args',$token).
505: &Apache::loncommon::help_open_topic('Maxima_Argument_Array');
506: $result.=&Apache::edit::text_arg('Libraries:',
507: 'libraries',$token).
508: &Apache::loncommon::help_open_topic('Maxima_Libraries');
509: $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
510: } elsif ($target eq 'modified') {
511: my $constructtag;
512: $constructtag=&Apache::edit::get_new_args($token,$parstack,
513: $safeeval,'answerdisplay','cas','args','libraries');
514: if ($constructtag) {
515: $result = &Apache::edit::rebuild_tag($token);
516: }
517: } elsif ($target eq 'answer' || $target eq 'grade') {
518: &Apache::response::reset_params();
519: } elsif ($target eq 'meta') {
520: $result .= &Apache::response::meta_package_write('mathresponse');
521: }
522: return $result;
523: }
524:
525: sub edit_mathresponse_button {
526: my ($id,$field)=@_;
527: my $button=&mt('Edit Answer');
528: # my $helplink=&Apache::loncommon::help_open_topic('Formula_Editor');
529: my $iconpath=$Apache::lonnet::perlvar{'lonIconsURL'};
530: return(<<ENDFORMULABUTTON);
531: <script language="JavaScript">
532: function edit_${id}_${field} (textarea) {
533: thenumber = textarea;
534: thedata = document.forms['lonhomework'].elements[textarea].value;
535: newwin = window.open("/adm/dragmath/applet/MaximaPopup.html","","width=565,height=400,resizable");
536: }
537: </script>
538: <a href="javascript:edit_${id}_${field}('${field}');void(0);"><img class="stift" src='$iconpath/stift.gif' alt='$button' title='$button'/></a>
539: ENDFORMULABUTTON
540: }
541:
542: sub end_mathresponse {
543: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
544: my $result;
545: my $part=$Apache::inputtags::part;
546: my $id=$Apache::inputtags::response[-1];
547: if ( $target eq 'grade' && &Apache::response::submitted() ) {
548: my $response = &Apache::response::getresponse();
549: if ( $response =~ /[^\s]/ ) {
550: if (!$Apache::lonxml::default_homework_loaded) {
551: &Apache::lonxml::default_homework_load($safeeval);
552: }
553: my %previous = &Apache::response::check_for_previous($response,
554: $part,$id);
555: $Apache::lonhomework::results{"resource.$part.$id.submission"}=
556: $response;
557: my $error;
558: my $award;
559: my $cas = &Apache::lonxml::get_param('cas',$parstack,$safeeval);
560: if ($cas eq 'maxima') {
561: my $args = [&Apache::lonxml::get_param_var('args',$parstack,$safeeval)];
562: $award=&Apache::lonmaxima::maxima_run($Apache::response::custom_answer[-1],$response,$args,
563: &Apache::lonxml::get_param('libraries',$parstack,$safeeval));
564: }
565: if (!&Apache::inputtags::valid_award($award)) {
566: $error = $award;
567: $award = 'ERROR';
568: }
569: &Apache::response::handle_previous(\%previous,$award);
570: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
571: $award;
572: if ($error) {
573: $Apache::lonhomework::results{"resource.$part.$id.awardmsg"}=
574: $error;
575: }
576: }
577: }
578: if ($target eq 'web') {
579: &setup_prior_tries_hash(\&format_prior_response_math);
580: my $partid = $Apache::inputtags::part;
581: my $id = $Apache::inputtags::response[-1];
582: if (($Apache::inputtags::status['-1'] eq 'CAN_ANSWER')
583: && (&Apache::lonnet::EXT('resource.'.$partid.'_'.$id.'.turnoffeditor') ne 'yes')) {
584: $result.=&edit_mathresponse_button($id,"HWVAL_$id");
585: }
586: }
587:
588: pop(@Apache::lonxml::namespace);
589: pop(@Apache::response::custom_answer);
590: pop(@Apache::response::custom_answer_type);
591: &Apache::lonxml::deregister('Apache::response',('answer'));
592: &Apache::response::end_response();
593: return $result;
594: }
595:
596: sub format_prior_response_math {
597: my ($mode,$answer) =@_;
598: return '<span class="LC_prior_math">'.
599: &HTML::Entities::encode($answer,'"<>&').'</span>';
600: }
601:
602: sub implicit_multiplication {
603: my ($expression)=@_;
604: # Escape scientific notation, so 3e8 does not become 3*e*8
605: # 3e8 -> 3&8; 3e-8 -> 3&-8; 3E+8 -> e&+8
606: $expression=~s/(\d+)e([\+\-]*\d+)/$1\&\($2\)/gsi;
607: # 3x10^8 -> 3&8; 3*10^-8 -> 3&-8
608: $expression=~s/(\d+)(?:x|\*)10(?:\^|\*\*)([\+\-]*\d+)/$1\&\($2\)/gsi;
609: # Fill in multiplication signs
610: # a b -> a*b;3 b -> 3*b;3 4 -> 3*4
611: $expression=~s/([A-Za-z0-9])\s+(?=[A-Za-z0-9])/$1\*/gs;
612: # )( -> )*(; ) ( -> )*(
613: $expression=~s/\)\s*\(/\)\*\(/gs;
614: # 3a -> 3*a; 3( -> 3*(; 3 ( -> 3*(; 3A -> 3*A
615: $expression=~s/(\d)\s*([a-zA-Z\(])/$1\*$2/gs;
616: # a ( -> a*(
617: $expression=~s/([A-Za-z0-9])\s+\(/$1\*\(/gs;
618: # )a -> )*a; )3 -> )*3; ) 3 -> )*3
619: $expression=~s/\)\s*([A-Za-z0-9])/\)\*$1/gs;
620: # 3&8 -> 3e8; 3&-4 -> 3e-4
621: $expression=~s/(\d+)\&\(([\+\-]*\d+)\)/$1e$2/gs;
622: return $expression;
623: }
624:
625: sub start_answer {
626: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
627: my $result;
628: push(@Apache::response::custom_answer,
629: &Apache::lonxml::get_all_text_unbalanced("/answer",$parser));
630: push(@Apache::response::custom_answer_type,
631: lc(&Apache::lonxml::get_param('type',$parstack,$safeeval)));
632: $Apache::response::custom_answer_type[-1] =~ s/\s+//g;
633: if ($target eq "edit" ) {
634: $result=&Apache::edit::tag_start($target,$token,'Answer algorithm');
635: $result.=&Apache::edit::editfield($token->[1],
636: $Apache::response::custom_answer[-1],
637: '',80,4);
638: } elsif ( $target eq "modified" ) {
639: $result=$token->[4].&Apache::edit::modifiedfield('/answer',$parser);
640: }
641: return $result;
642: }
643:
644: sub end_answer {
645: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
646: if ($target eq 'edit' ) {
647: return &Apache::edit::end_table();
648: }
649: }
650:
651: sub decide_package {
652: my ($tagstack)=@_;
653: my $package;
654: if ($$tagstack[-1] eq 'parameter') {
655: $package='part';
656: } else {
657: my $i=-1;
658: while (defined($$tagstack[$i])) {
659: if ($$tagstack[$i] =~ /(response|hint)$/) {
660: $package=$$tagstack[$i];
661: last;
662: }
663: $i--;
664: }
665: }
666: return $package;
667: }
668:
669: sub start_responseparam {
670: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
671: my $result='';
672: if ($target eq 'meta') {
673: $result = &meta_parameter_write($token->[2]->{'name'},
674: $token->[2]->{'type'},
675: $token->[2]->{'default'},
676: $token->[2]->{'description'});
677: } elsif ($target eq 'edit') {
678: $result.=&Apache::edit::tag_start($target,$token);
679: my $optionlist;
680: my $package=&decide_package($tagstack);
681: foreach my $key (sort(keys(%Apache::lonnet::packagetab))) {
682: if ($key =~ /^\Q$package\E&(.*)&display$/) {
683: $optionlist.='<option value="'.$1.'">'.
684: $Apache::lonnet::packagetab{$key}.'</option>';
685: }
686: }
687: if (defined($optionlist)) {
688: $result.=&mt('Use template:').' <select name="'.
689: &Apache::edit::html_element_name('parameter_package').'">'.
690: '<option value=""></option>'.$optionlist.'</select><br />';
691: }
692: $result.=&Apache::edit::text_arg('Name:','name',$token).
693: &Apache::edit::text_arg('Type:','type',$token).
694: &Apache::edit::text_arg('Description:','description',$token).
695: &Apache::edit::text_arg('Default:','default',$token).
696: "</td></tr>";
697: $result.=&Apache::edit::end_table;
698: } elsif ($target eq 'modified') {
699: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
700: $safeeval,'name','type',
701: 'description','default');
702: my $element=&Apache::edit::html_element_name('parameter_package');
703: if (defined($env{"form.$element"}) && $env{"form.$element"} ne '') {
704: my $name=$env{"form.$element"};
705: my $tag=&decide_package($tagstack);
706: $token->[2]->{'name'}=$name;
707: $token->[2]->{'type'}=
708: $Apache::lonnet::packagetab{"$tag&$name&type"};
709: $token->[2]->{'description'}=
710: $Apache::lonnet::packagetab{"$tag&$name&display"};
711: $token->[2]->{'default'}=
712: $Apache::lonnet::packagetab{"$tag&$name&default"};
713: $token->[3] = ['name','type','description','default'];
714: $constructtag=1;
715: }
716: if ($constructtag) {
717: $result = &Apache::edit::rebuild_tag($token);
718: }
719: } elsif ($target eq 'grade' || $target eq 'answer' || $target eq 'web' ||
720: $target eq 'tex' || $target eq 'analyze' ) {
721: if ($env{'request.state'} eq 'construct') {
722: my $name =&Apache::lonxml::get_param('name',$parstack,$safeeval);
723: my $default=&Apache::lonxml::get_param('default',$parstack,
724: $safeeval);
725: if ($name) {$Apache::inputtags::params{$name}=$default;}
726: }
727: }
728: return $result;
729: }
730:
731: sub end_responseparam {
732: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
733: if ($target eq 'edit') { return ('','no'); }
734: return '';
735: }
736:
737: sub start_parameter {
738: return &start_responseparam(@_);
739: }
740:
741: sub end_parameter {
742: return &end_responseparam(@_);
743: }
744:
745: sub reset_params {
746: %Apache::inputtags::params=();
747: }
748:
749: sub setup_params {
750: my ($tag,$safeeval) = @_;
751:
752: if ($env{'request.state'} eq 'construct') { return; }
753: my %paramlist=();
754: foreach my $key (keys(%Apache::lonnet::packagetab)) {
755: if ($key =~ /^\Q$tag\E/) {
756: my ($package,$name) = split(/&/,$key);
757: $paramlist{$name}=1;
758: }
759: }
760: foreach my $key (keys(%paramlist)) {
761: my $entry= 'resource.'.$Apache::inputtags::part;
762: if (defined($Apache::inputtags::response[-1])) {
763: $entry.='_'.$Apache::inputtags::response[-1];
764: }
765: $entry.='.'.$key;
766: &Apache::lonxml::debug("looking for $entry");
767: my $value = &Apache::lonnet::EXT("$entry");
768: &Apache::lonxml::debug("$key has value :$value:");
769: if ($value eq 'con_lost' || $value =~ /^error:/) {
770: &Apache::lonxml::debug("using nothing");
771: $Apache::inputtags::params{$key}='';
772: } else {
773: my $string="{return qq\0".$value."\0}";
774: my $newvalue=&Apache::run::run($string,$safeeval,1);
775: if (defined($newvalue)) { $value=$newvalue; }
776: $Apache::inputtags::params{$key}=$value;
777: }
778: }
779: }
780:
781: {
782: my @answer_bits;
783: my $need_row_start;
784:
785: sub answer_header {
786: my ($type,$increment,$rows) = @_;
787: my $result;
788: if ($env{'form.answer_output_mode'} eq 'tex') {
789: undef(@answer_bits);
790: my $bit;
791: if ($Apache::lonhomework::type eq 'exam') {
792: $bit = ($Apache::lonxml::counter+$increment).') ';
793: } else {
794: $bit .= ' Answer for Part: \verb|'.
795: $Apache::inputtags::part.'| ';
796: }
797: push(@answer_bits,$bit);
798: } else {
799: my $td = '<td '.(defined($rows)?'rowspan="'.$rows.'"':'').'>';
800: $result = '<table border="1"><tr>';
801: if ($Apache::lonhomework::type eq 'exam') {
802: $result .= $td.($Apache::lonxml::counter+$increment). ')</td>';
803: } else {
804: $result .= $td.&mt('Answer for Part: [_1]',
805: $Apache::inputtags::part).'</td>';
806: }
807: $result .= "\n";
808: $need_row_start = 0;
809: }
810: return $result;
811: }
812:
813: sub next_answer {
814: my ($type) = @_;
815: my $result;
816: if ($env{'form.answer_output_mode'} eq 'tex') {
817: # FIXME ... need to do something with tex mode
818: } else {
819: $result .= "</tr>";
820: $need_row_start = 1;
821: }
822: return $result;
823: }
824:
825: sub answer_part {
826: my ($type,$answer,$args) = @_;
827: my $result;
828: if ($env{'form.answer_output_mode'} eq 'tex') {
829: if (!$args->{'no_verbatim'}) {
830: my $to_use='|';
831: foreach my $value (32..126) {
832: my $char=pack('c',$value);
833: if ($answer !~ /\Q$char\E/) {
834: $to_use=$char;
835: last;
836: }
837: }
838: my $fullanswer=$answer;
839: $answer='';
840: foreach my $element (split(/[\;]/,$fullanswer)) {
841: if ($element ne '') {
842: $answer.= '\verb'.$to_use.$element.$to_use.' \newline';
843: }
844: }
845: }
846: if ($answer ne '') {
847: push(@answer_bits,$answer);
848: }
849: } else {
850: if ($need_row_start) {
851: $result .= '<tr>';
852: $need_row_start = 0;
853: }
854: $result .= '<td>'.$answer.'</td>';
855: }
856: return $result;
857: }
858:
859: sub answer_footer {
860: my ($type) = @_;
861: my $result;
862: if ($env{'form.answer_output_mode'} eq 'tex') {
863: $result = ' \vskip 0 mm \noindent \begin{tabular}{|p{1.5cm}|p{6.8cm}|}\hline ';
864: $result .= $answer_bits[0].'&\vspace*{-4mm}\begin{itemize}';
865: for (my $i=1;$i<=$#answer_bits;$i++) {
866: $result.='\item '.$answer_bits[$i].'\vspace*{-7mm}';
867: }
868: $result .= ' \end{itemize} \\\\ \hline \end{tabular} \vskip 0 mm ';
869: } else {
870: if (!$need_row_start) {
871: $result .= '</tr>';
872: }
873: $result .= '</table>';
874: }
875: return $result;
876: }
877:
878: }
879:
880: sub showallfoils {
881: if (defined($env{'form.showallfoils'})) {
882: my ($symb)=&Apache::lonnet::whichuser();
883: if (($env{'request.state'} eq 'construct') ||
884: ($env{'user.adv'} && $symb eq '') ||
885: ($Apache::lonhomework::viewgrades) ) {
886: return 1;
887: }
888: }
889: if ($Apache::lonhomework::type eq 'survey') { return 1; }
890: return 0;
891: }
892:
893: =pod
894:
895: =item &getresponse($offset,$resulttype);
896:
897: Retreives the current submitted response, helps out in the case of
898: scantron mode.
899:
900: Returns either the exact text of the submission, or a bubbled response
901: converted to something usable.
902:
903: Optional Arguments:
904: $offset - (defaults to 1) if a problem has more than one bubble
905: response, pass in the number of the bubble wanted, (the
906: first bubble associated with a problem has an offset of 1,
907: the second bubble is 2
908:
909: $resulttype - undef -> a number between 0 and 25
910: 'A is 1' -> a number between 1 and 26
911: 'letter' -> a letter between 'A' and 'Z'
912: $lines - undef problem only needs a single line of bubbles.
913: nonzero Problem wants the first nonempty response in
914: $lines lines of bubbles.
915: $bubbles_per_line - Must be provided if lines is defined.. number of
916: bubbles on a line.
917:
918: =cut
919:
920: sub getresponse {
921: my ($offset,$resulttype, $lines, $bubbles_per_line)=@_;
922: my $formparm='form.HWVAL_'.$Apache::inputtags::response['-1'];
923: my $response;
924: if (!defined($offset)) {
925: $offset=1;
926: } else {
927: $formparm.=":$offset";
928: }
929: if (!defined($lines)) {
930: $lines = 1;
931: }
932: my %let_to_num=('A'=>0,'B'=>1,'C'=>2,'D'=>3,'E'=>4,'F'=>5,'G'=>6,'H'=>7,
933: 'I'=>8,'J'=>9,'K'=>10,'L'=>11,'M'=>12,'N'=>13,'O'=>14,
934: 'P'=>15,'Q'=>16,'R'=>17,'S'=>18,'T'=>19,'U'=>20,'V'=>21,
935: 'W'=>22,'X'=>23,'Y'=>24,'Z'=>25);
936: if ($env{'form.submitted'} eq 'scantron') {
937: my $part = $Apache::inputtags::part;
938: my $id = $Apache::inputtags::response[-1];
939:
940: my $line;
941: for ($line = 0; $line < $lines; $line++) {
942: my $theline = $Apache::lonxml::counter+$offset-1+$line;
943: $response = $env{"scantron.$theline.answer"};
944: if ((defined($response)) && ($response ne "") && ($response ne " ")) {
945: last;
946: }
947:
948: }
949:
950: # save bubbled letter for later
951: $Apache::lonhomework::results{"resource.$part.$id.scantron"}.=
952: $response;
953: if ($resulttype ne 'letter') {
954: if ($resulttype eq 'A is 1') {
955: $response = $let_to_num{$response}+1;
956: } else {
957: $response = $let_to_num{$response};
958: }
959: if ($response ne "") {
960: $response += $line * $bubbles_per_line;
961: }
962: } else {
963: if ($response ne "") {
964: $response = chr(ord($response) + $line * $bubbles_per_line);
965: }
966: }
967:
968: } else {
969: $response = $env{$formparm};
970: }
971: #
972: # If we have a nonempty answer, correct the numeric value
973: # of the answer for the line on which it was found.
974: #
975:
976: return $response;
977: }
978:
979: =pod
980:
981: =item &repetition();
982:
983: Returns the number of lines that are required to encode the weight.
984: (Currently expects that there are 10 bubbles per line)
985:
986: =cut
987:
988: sub repetition {
989: my $id = $Apache::inputtags::part;
990: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
991: if (!defined($weight) || ($weight eq '')) { $weight=1; }
992: my $repetition = int($weight/10);
993: if ($weight % 10 != 0) { $repetition++; }
994: return $repetition;
995: }
996:
997: =pod
998:
999: =item &scored_response($part_id,$response_id);
1000:
1001: Sets the results hash elements
1002:
1003: resource.$part_id.$response_id.awarded - to the floating point
1004: number between 0 and 1 that was awarded on the bubbled input
1005:
1006: resource.$part_id.$response_id.awarddetail - to 'ASSIGNED_SCORE'
1007:
1008: Returns
1009:
1010: the number of bubble sheet lines that were used (and likely need to
1011: be passed to &Apache::lonxml::increment_counter()
1012:
1013: Arguments
1014:
1015: $part_id - id of the part to grade
1016: $response_id - id of the response to grade
1017:
1018:
1019: =cut
1020:
1021: sub scored_response {
1022: my ($part,$id)=@_;
1023: my $repetition=&repetition();
1024: my $score=0;
1025: for (my $i=0;$i<$repetition;$i++) {
1026: # A is 1, B is 2, etc. (get response return 0-9 and then we add 1)
1027: my $increase=&Apache::response::getresponse($i+1);
1028: if ($increase ne '') { $score+=$increase+1; }
1029: }
1030: my $weight = &Apache::lonnet::EXT("resource.$part.weight");
1031: if (!defined($weight) || $weight eq '' || $weight eq 0) { $weight = 1; }
1032: my $pcr=$score/$weight;
1033: $Apache::lonhomework::results{"resource.$part.$id.awarded"}=$pcr;
1034: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
1035: 'ASSIGNED_SCORE';
1036: return $repetition;
1037: }
1038:
1039: sub whichorder {
1040: my ($max,$randomize,$showall,$hash)=@_;
1041: #&Apache::lonxml::debug("man $max randomize $randomize");
1042: if (!defined(@{ $$hash{'names'} })) { return; }
1043: my @names = @{ $$hash{'names'} };
1044: my @whichopt =();
1045: my (%top,@toplist,%bottom,@bottomlist);
1046: if (!($showall || ($randomize eq 'no'))) {
1047: my $current=0;
1048: foreach my $name (@names) {
1049: $current++;
1050: if ($$hash{"$name.location"} eq 'top') {
1051: $top{$name}=$current;
1052: } elsif ($$hash{"$name.location"} eq 'bottom') {
1053: $bottom{$name}=$current;
1054: }
1055: }
1056: }
1057: my $topcount=0;
1058: my $bottomcount=0;
1059: while (((scalar(@whichopt)+$topcount+$bottomcount) < $max || $showall)
1060: && ($#names > -1)) {
1061: #&Apache::lonxml::debug("Have $#whichopt max is $max");
1062: my $aopt;
1063: if ($showall || ($randomize eq 'no')) {
1064: $aopt=0;
1065: } else {
1066: $aopt=int(&Math::Random::random_uniform() * ($#names+1));
1067: }
1068: #&Apache::lonxml::debug("From $#whichopt $max $#names elms, picking $aopt");
1069: $aopt=splice(@names,$aopt,1);
1070: #&Apache::lonxml::debug("Picked $aopt");
1071: if ($top{$aopt}) {
1072: $toplist[$top{$aopt}]=$aopt;
1073: $topcount++;
1074: } elsif ($bottom{$aopt}) {
1075: $bottomlist[$bottom{$aopt}]=$aopt;
1076: $bottomcount++;
1077: } else {
1078: push (@whichopt,$aopt);
1079: }
1080: }
1081: for (my $i=0;$i<=$#toplist;$i++) {
1082: if ($toplist[$i]) { unshift(@whichopt,$toplist[$i]) }
1083: }
1084: for (my $i=0;$i<=$#bottomlist;$i++) {
1085: if ($bottomlist[$i]) { push(@whichopt,$bottomlist[$i]) }
1086: }
1087: return @whichopt;
1088: }
1089:
1090: sub show_answer {
1091: my $part = $Apache::inputtags::part;
1092: my $award = $Apache::lonhomework::history{"resource.$part.solved"};
1093: my $status = $Apache::inputtags::status[-1];
1094: return ( ($award =~ /^correct/
1095: && &Apache::lonhomework::show_problem_status())
1096: || $status eq "SHOW_ANSWER");
1097: }
1098:
1099: sub analyze_store_foilgroup {
1100: my ($shown,$attrs)=@_;
1101: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
1102: foreach my $name (@{ $Apache::response::foilgroup{'names'} }) {
1103: if (defined($Apache::lonhomework::analyze{"$part_id.foil.value.$name"})) { next; }
1104: push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },$name);
1105: foreach my $attr (@$attrs) {
1106: $Apache::lonhomework::analyze{"$part_id.foil.".$attr.".$name"} =
1107: $Apache::response::foilgroup{"$name.".$attr};
1108: }
1109: }
1110: push (@{ $Apache::lonhomework::analyze{"$part_id.shown"} }, @{ $shown });
1111: }
1112:
1113: sub check_if_computed {
1114: my ($token,$parstack,$safeeval,$name)=@_;
1115: my $value = &Apache::lonxml::get_param($name,$parstack,$safeeval);
1116: if (ref($token->[2]) eq 'HASH' && $value ne $token->[2]{$name}) {
1117: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
1118: $Apache::lonhomework::analyze{"$part_id.answercomputed"} = 1;
1119: }
1120: }
1121:
1122: sub pick_foil_for_concept {
1123: my ($target,$attrs,$hinthash,$parstack,$safeeval)=@_;
1124: if (not defined(@{ $Apache::response::conceptgroup{'names'} })) { return; }
1125: my @names = @{ $Apache::response::conceptgroup{'names'} };
1126: my $pick=int(&Math::Random::random_uniform() * ($#names+1));
1127: my $name=$names[$pick];
1128: push @{ $Apache::response::foilgroup{'names'} }, $name;
1129: foreach my $attr (@$attrs) {
1130: $Apache::response::foilgroup{"$name.".$attr} =
1131: $Apache::response::conceptgroup{"$name.".$attr};
1132: }
1133: my $concept = &Apache::lonxml::get_param('concept',$parstack,$safeeval);
1134: $Apache::response::foilgroup{"$name.concept"} = $concept;
1135: &Apache::lonxml::debug("Selecting $name in $concept");
1136: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
1137: if ($target eq 'analyze') {
1138: push (@{ $Apache::lonhomework::analyze{"$part_id.concepts"} },
1139: $concept);
1140: $Apache::lonhomework::analyze{"$part_id.concept.$concept"}=
1141: $Apache::response::conceptgroup{'names'};
1142: foreach my $name (@{ $Apache::response::conceptgroup{'names'} }) {
1143: push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },
1144: $name);
1145: foreach my $attr (@$attrs) {
1146: $Apache::lonhomework::analyze{"$part_id.foil.$attr.$name"}=
1147: $Apache::response::conceptgroup{"$name.$attr"};
1148: }
1149: }
1150: }
1151: push(@{ $hinthash->{"$part_id.concepts"} },$concept);
1152: $hinthash->{"$part_id.concept.$concept"}=
1153: $Apache::response::conceptgroup{'names'};
1154:
1155: }
1156: #------------------------------------------------------------
1157: #
1158: # Get a parameter associated with a problem.
1159: # Parameters:
1160: # $id - the id of the paramater, either a part id,
1161: # or a partid and responspe id joined by _
1162: # $name - Name of the parameter to fetch
1163: # $default - Default value for the paramter.
1164: #
1165: #
1166: #
1167: sub get_response_param {
1168: my ($id,$name,$default)=@_;
1169: my $parameter;
1170: if ($env{'request.state'} eq 'construct' &&
1171: defined($Apache::inputtags::params{$name})) {
1172: $parameter=$Apache::inputtags::params{$name};
1173: } else {
1174: $parameter=&Apache::lonnet::EXT("resource.$id.$name");
1175: }
1176: if (!defined($parameter) || $parameter eq '') {
1177: $parameter = $default;
1178: }
1179: return $parameter;
1180: }
1181:
1182: sub submitted {
1183: my ($who)=@_;
1184:
1185: # when scatron grading any submission is a submission
1186: if ($env{'form.submitted'} eq 'scantron') { return 1; }
1187: # if the caller only cared if this was a scantron submission
1188: if ($who eq 'scantron') { return 0; }
1189: # if the Submit Answer button for this particular part was pressed
1190: my $partid=$Apache::inputtags::part;
1191: if ($env{'form.submitted'} eq "part_$partid") {
1192: return 1;
1193: }
1194: if ($env{'form.submitted'} eq "yes"
1195: && defined($env{'form.submit_'.$partid})) {
1196: return 1;
1197: }
1198: # Submit All button on a .page was pressed
1199: if (defined($env{'form.all_submit'})) { return 1; }
1200: # otherwise no submission occurred
1201: return 0;
1202: }
1203:
1204: sub add_to_gradingqueue {
1205: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
1206: if ( $courseid eq ''
1207: || $symb eq ''
1208: || $env{'request.state'} eq 'construct'
1209: || $Apache::lonhomework::type ne 'problem') {
1210: return;
1211: }
1212:
1213: my %queue_info = ( 'type' => 'problem',
1214: 'time' => time);
1215:
1216: if (exists($Apache::lonhomework::history{"resource.0.checkedin.slot"})) {
1217: $queue_info{'slot'}=
1218: $Apache::lonhomework::history{"resource.0.checkedin.slot"};
1219: }
1220:
1221: my $result=&Apache::bridgetask::add_to_queue('gradingqueue',\%queue_info);
1222: if ($result ne 'ok') {
1223: &Apache::lonxml::error("add_to_queue said $result");
1224: }
1225: }
1226:
1227: # basically undef and 0 (both false) mean that they still have work to do
1228: # and all true values mean that they can't do any more work
1229: #
1230: # a return of undef means it is unattempted
1231: # a return of 0 means it is attmpted and wrong but still has tries
1232: # a return of 1 means it is marked correct
1233: # a return of 2 means they have exceed maximum number of tries
1234: # a return of 3 means it after the answer date
1235: sub check_status {
1236: my ($id)=@_;
1237: if (!defined($id)) { $id=$Apache::inputtags::part; }
1238: my $curtime=&Apache::lonnet::EXT('system.time');
1239: my $opendate=&Apache::lonnet::EXT("resource.$id.opendate");
1240: my $duedate=&Apache::lonnet::EXT("resource.$id.duedate");
1241: my $answerdate=&Apache::lonnet::EXT("resource.$id.answerdate");
1242: if ( $opendate && $curtime > $opendate &&
1243: $duedate && $curtime > $duedate &&
1244: $answerdate && $curtime > $answerdate) {
1245: return 3;
1246: }
1247: my $status=&Apache::lonnet::EXT("user.resource.resource.$id.solved");
1248: if ($status =~ /^correct/) { return 1; }
1249: if (!$status) { return undef; }
1250: my $maxtries=&Apache::lonnet::EXT("resource.$id.maxtries");
1251: if ($maxtries eq '') { $maxtries=2; }
1252: my $curtries=&Apache::lonnet::EXT("user.resource.resource.$id.tries");
1253: if ($curtries < $maxtries) { return 0; }
1254: return 2;
1255: }
1256:
1257: =pod
1258:
1259: =item setup_prior_tries_hash($func,$data)
1260:
1261: Foreach each past .submission $func is called with 3 arguments
1262: - the mode to set things up for (currently always 'grade')
1263: - the stored .submission string
1264: - The expansion of $data
1265:
1266: $data is an array ref containing elements that are either
1267: - scalars that are other elements of the history hash to pass to $func
1268: - ref to data to be passed untouched to $func
1269:
1270: =cut
1271:
1272: sub setup_prior_tries_hash {
1273: my ($func,$data) = @_;
1274: my $part = $Apache::inputtags::part;
1275: my $id = $Apache::inputtags::response[-1];
1276: foreach my $i (1..$Apache::lonhomework::history{'version'}) {
1277: my $sub_key = "$i:resource.$part.$id.submission";
1278: next if (!exists($Apache::lonhomework::history{$sub_key}));
1279: my @other_data;
1280: foreach my $datum (@{ $data }) {
1281: if (ref($datum)) {
1282: push(@other_data,$datum);
1283: } else {
1284: my $info_key = "$i:resource.$part.$id.$datum";
1285: push(@other_data,$Apache::lonhomework::history{$info_key});
1286: }
1287: }
1288:
1289: my $output =
1290: &$func('grade',
1291: $Apache::lonhomework::history{$sub_key},
1292: \@other_data);
1293: if (defined($output)) {
1294: $Apache::inputtags::submission_display{$sub_key} = $output;
1295: }
1296: }
1297: }
1298:
1299: 1;
1300: __END__
1301:
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