1: # The LearningOnline Network with CAPA
2: # essay (ungraded) style responses
3: #
4: # $Id: essayresponse.pm,v 1.101.10.2 2010/09/13 04:23:00 raeburn 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::essayresponse;
30: use strict;
31: use Apache::lonxml();
32: use Apache::lonhtmlcommon;
33: use Apache::loncommon;
34: use Apache::lonnet;
35: use Apache::lonnavmaps;
36: use Apache::lonlocal;
37: use LONCAPA qw(:DEFAULT :match);
38:
39:
40: BEGIN {
41: &Apache::lonxml::register('Apache::essayresponse',('essayresponse'));
42: }
43:
44: sub start_essayresponse {
45: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
46: my $result;
47: my $id = &Apache::response::start_response($parstack,$safeeval);
48: if ($target eq 'meta') {
49: $result=&Apache::response::meta_package_write('essayresponse');
50: } elsif ($target eq 'web' &&
51: $Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
52: my $part= $Apache::inputtags::part;
53: my $ncol= &Apache::lonnet::EXT("resource.$part".'_'."$id.maxcollaborators");
54: my $coll= &HTML::Entities::encode($Apache::lonhomework::history{"resource.$part.$id.collaborators"},'<>&"');
55: my $uploadedfiletypes= &Apache::lonnet::EXT("resource.$part".'_'."$id.uploadedfiletypes");
56: $uploadedfiletypes=~s/[^\w\,]//g;
57: my $maxfilesize=&Apache::lonnet::EXT("resource.$part".'_'."$id.maxfilesize");
58: if (!defined($maxfilesize)) {
59: $maxfilesize = 10.0; #FIXME This should become a domain configuration
60: }
61: if ( $Apache::lonhomework::type eq 'survey' ) {
62: $result.= '<input type="hidden" name="HWDRAFT'.$part.'_'.$id.'" value="yes" /> ';
63: }
64: my $status_text = &mt('Submission type');
65: if ($Apache::lonhomework::history{"resource.$part.award"} eq 'DRAFT') {
66: $status_text .= '<br />'.&mt('(Currently -- draft)');
67: }
68: $result.= '<p>'.&Apache::lonhtmlcommon::start_pick_box();
69: if ( $Apache::lonhomework::type ne 'survey' ) {
70: if ($env{'request.uri'} eq '/res/gci/gci/internal/submission.problem') {
71:
72: $result .= '<input type="hidden" name="HWDRAFT'.$part.'_'.$id.'" value="yes" />';
73: } else {
74: $result .= &Apache::lonhtmlcommon::row_title($status_text);
75: my $closure;
76: unless ($ncol || $uploadedfiletypes) {
77: $closure = 1;
78: }
79: $result.=
80: '<label>'.
81: '<input type="radio" name="HWDRAFT'.$part.'_'.$id.'" value="yes" checked="checked" /> '.
82: &mt('Submit entries below as answer to receive credit').
83: '</label> <br />'.
84: '<label>'.
85: '<input type="radio" name="HWDRAFT'.$part.'_'.$id.'" value="no" /> '.
86: &mt('Save entries below (not submitted for credit yet)').
87: '</label>'.
88: &Apache::lonhtmlcommon::row_closure($closure);
89: }
90: }
91: if ($ncol > 0) {
92: $result.= &Apache::lonhtmlcommon::row_title(&mt('Collaborators')).
93: '<label>'.
94: &mt('Collaborators:').' <input type="text" size="70" max="80" name="HWCOL'.
95: $part.'_'.$id.'" value="'.$coll.'" /><br />'.
96: &mt('(Enter a maximum of [quant,_1,collaborator] using username or username:domain, e.g. smithje or smithje:[_2].)',$ncol,$env{'user.domain'});
97: if ($ncol > 1) {
98: $result .= '<br />'.&mt('If entering more than one, use spaces to separate the collaborators.');
99: }
100: $result .= '</label><br />';
101: $result .= &check_collaborators($ncol,$coll) if ($coll =~ /\w+/);
102: $result .= &Apache::lonhtmlcommon::row_closure();
103: }
104: my $filesfrom = 'both';
105: my $stuname = &Apache::lonnet::EXT('user.name');
106: my $studom = &Apache::lonnet::EXT('user.domain');
107: if (!&Apache::lonnet::usertools_access($stuname,$studom,'portfolio')) {
108: $filesfrom = 'uploadonly';
109: }
110: $result.=&Apache::inputtags::file_selector($part,$id,$uploadedfiletypes,
111: $filesfrom,undef,$maxfilesize);
112: $result.=&Apache::lonhtmlcommon::end_pick_box().'</p>';
113: } elsif ($target eq 'web' &&
114: $Apache::inputtags::status[-1] ne 'CAN_ANSWER') {
115: my $part= $Apache::inputtags::part;
116: my @msgs;
117: if ($Apache::lonhomework::history{"resource.$part.$id.collaborators"} =~ /\S/) {
118: my $coll= &HTML::Entities::encode($Apache::lonhomework::history{"resource.$part.$id.collaborators"},'<>&"');
119: $result .= '<td><i>'.&mt('Collaborated with [_1]',$coll).'</i></td>';
120: }
121:
122: my $current_files_display = &Apache::inputtags::current_file_submissions($part,$id);
123: if ($current_files_display) {
124: $result .= '<td><b>'.&mt('Submitted files:').'</b><br />'.
125: $current_files_display.'</td>';
126: }
127:
128: if ($result ne '') {
129: $result =
130: '<table class="LC_pastsubmission"><tr>'.$result.
131: '</tr></table>';
132: }
133: }
134: return $result;
135: }
136:
137: sub end_essayresponse {
138: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
139: my $part = $Apache::inputtags::part;
140: my $id = $Apache::inputtags::response[-1];
141: my $increment = &Apache::response::repetition();
142: my $result;
143: if ( $target eq 'grade' ) {
144: my $collaborators = $env{'form.HWCOL'.$part.'_'.$id};
145: if ($collaborators =~ /[^\s]/) {
146: my $previous_list= &HTML::Entities::encode($Apache::lonhomework::history{"resource.$part.$id.collaborators"},'<>&"');
147: $Apache::lonhomework::results{"resource.$part.$id.collaborators"}=$collaborators
148: if ($collaborators ne $previous_list);
149: }
150: if ( &Apache::response::submitted('scantron') ) {
151: $increment=&Apache::response::scored_response($part,$id);
152: } elsif ( &Apache::response::submitted() ) {
153: my $response = $env{'form.HWVAL_'.$id};
154: my $jspart=$part;
155: $jspart=~s/\./_/g;
156: my $filename = $env{'form.HWFILE'.$jspart.'_'.$id.'.filename'} ||
157: $env{'form.HWFILETOOBIG'.$part.'_'.$id};
158: my $portfiles = $env{'form.HWPORT'.$jspart.'_'.$id};
159: my @deletions = &Apache::loncommon::get_env_multiple('form.HWFILE'.$jspart.'_'.$id.'_delete');
160: my ($is_submit,$was_draft);
161: if ($env{'form.HWDRAFT'.$part.'_'.$id} eq 'yes') {
162: $is_submit = 1;
163: }
164: if ($Apache::lonhomework::history{"resource.$part.award"} eq 'DRAFT') {
165: $was_draft = 1;
166: }
167: if (($response =~ /[^\s]/) || ($filename =~ /[^\s]/) || ($portfiles =~ /[^\s]/) ||
168: (@deletions > 0) || ($was_draft && $is_submit)) {
169: my $award='DRAFT';
170: if ($env{'form.HWDRAFT'.$part.'_'.$id} eq 'yes') {
171: $award='SUBMITTED';
172: }
173: my $uploadedflag=0;
174: my $totalsize=0;
175: &file_submission($part,$id,\$award,\$uploadedflag,\$totalsize,\@deletions);
176: $Apache::lonhomework::results{"resource.$part.$id.submission"}=$response;
177: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$award;
178: my %previous=&Apache::response::check_for_previous($response,$part,$id);
179: if ($uploadedflag) {
180: if ($award eq 'FILENAME_INUSE') {
181: delete($Apache::lonhomework::results{"resource.$id.tries"});
182: }
183: } else {
184: &Apache::response::handle_previous(\%previous,$award);
185: }
186: #
187: # Store with resource author for similarity testing
188: #
189: if ($award eq 'SUBMITTED') {
190: my ($symb,$crsid,$domain,$name)=
191: &Apache::lonnet::whichuser();
192: if ($crsid) {
193: my $akey=join('.',&escape($name),&escape($domain),
194: &escape($crsid));
195: my $essayurl=
196: &Apache::lonnet::declutter($ENV{'REQUEST_URI'});
197: my ($adom,$aname,$apath)=
198: ($essayurl=~/^($LONCAPA::domain_re)\/($LONCAPA::username_re)\/(.*)$/);
199: $apath=&escape($apath);
200: $apath=~s/\W/\_/gs;
201: &Apache::lonnet::put('nohist_essay_'.$apath,
202: { $akey => $response },$adom,$aname);
203: }
204: }
205: }
206: }
207: } elsif ($target eq 'edit') {
208: $result.=&Apache::edit::end_table();
209:
210: } elsif ($target eq 'tex'
211: && $Apache::lonhomework::type eq 'exam') {
212: $result .= &Apache::inputtags::exam_score_line($target);
213:
214: } elsif ($target eq 'answer') {
215: $result.=&Apache::response::answer_header($$tagstack[-1]);
216: my $answer = &mt('Essay will be hand graded.');
217: $result.=&Apache::response::answer_part($$tagstack[-1],$answer,
218: {'no_verbatim' => 1});
219: $result.=&Apache::response::answer_footer($$tagstack[-1]);
220: }
221: if ($target eq 'web') {
222: &Apache::response::setup_prior_tries_hash(\&format_prior_response,
223: ['portfiles',
224: 'uploadedurl']);
225: }
226:
227: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
228: $target eq 'tex' || $target eq 'analyze') {
229: &Apache::lonxml::increment_counter($increment, "$part.$id");
230:
231: if ($target eq 'analyze') {
232: $Apache::lonhomework::analyze{"$part.$id.type"} = 'essayresponse';
233: push (@{ $Apache::lonhomework::analyze{"parts"} },"$part.$id");
234: &Apache::lonhomework::set_bubble_lines();
235: }
236: }
237: &Apache::response::end_response;
238:
239: return $result;
240: }
241:
242: sub format_prior_response {
243: my ($mode,$answer,$other_data) = @_;
244: my $output;
245:
246: my (undef,undef,$udom,$uname) = &Apache::lonnet::whichuser();
247: my $port_url = '/uploaded/'.$udom.'/'.$uname.'/portfolio/';
248:
249: my $file_list;
250:
251: foreach my $file (split(/\s*,\s*/,
252: $other_data->[0].','.$other_data->[1])) {
253: next if ($file!~/\S/);
254: if ($file !~ m{^/uploaded/}) { $file=$port_url.$file; }
255: $file=~s|/+|/|g;
256: &Apache::lonnet::allowuploaded('/adm/essayresponse',$file);
257: $file_list.='<li><span class="LC_nobreak"><a href="'.$file.'?rawmode=1" target="lonGRDs"><img src="'.
258: &Apache::loncommon::icon($file).'" alt="file icon" border="0" /> '.$file.
259: '</a></span></li>'."\n";
260: }
261: if ($file_list) {
262: $output.= &mt('Submitted Files').'<ul>'.$file_list.'</ul>';
263: }
264: if ($answer =~ /\S/) {
265: $output.='<p>'.&mt('Submitted text').
266: '<blockquote>'.$answer.'</blockquote></p>';
267: }
268:
269: return '<div class="LC_prior_essay">'.$output.'</div>';
270: }
271:
272: sub file_submission {
273: my ($part,$id,$award,$uploadedflag,$totalsize,$deletions)=@_;
274: my $files;
275: my $jspart=$part;
276: $jspart=~s/\./_/g;
277: my ($symb,$crsid,$udom,$uname) = &Apache::lonnet::whichuser();
278: my %crsinfo = &Apache::lonnet::coursedescription($crsid);
279: my $cdom = $crsinfo{'domain'};
280: my $cnum = $crsinfo{'num'};
281: my (@portfiles,$uploadedurl,@submitted_portfiles,$submitted_upload,
282: @acceptable_portfiles,$acceptable_upload,@accepted_portfiles,
283: $accepted_upload,@savedportfiles,$stored_upload,@tolock,
284: %port_delete,$uploaded_delete);
285: if ($Apache::lonhomework::history{"resource.$part.$id.portfiles"} ||
286: $Apache::lonhomework::history{"resource.$part.$id.uploadedurl"}) {
287: if ($Apache::lonhomework::history{"resource.$part.$id.portfiles"}) {
288: @portfiles = split(/,/,$Apache::lonhomework::history{"resource.$part.$id.portfiles"});
289: }
290: $uploadedurl = $Apache::lonhomework::history{"resource.$part.$id.uploadedurl"};
291: if (ref($deletions) eq 'ARRAY') {
292: if (@{$deletions} > 0) {
293: foreach my $file (@{$deletions}) {
294: $file = &HTML::Entities::decode($file);
295: if (grep(/^\Q$file\E$/,@portfiles)) {
296: $port_delete{$file} = 1;
297: } elsif ($file =~ m{^/uploaded/\Q$udom\E/\Q$uname\E/essayresponse/\Q$cdom\E/\Q$cnum\E/}) {
298: $uploaded_delete = $file;
299: } elsif ($file =~ m{^/uploaded/\Q$udom\E/\Q$uname\E/essayresponse/[^/]+$}) {
300: $uploaded_delete = $file;
301: }
302: }
303: }
304: }
305: foreach my $current (@portfiles) {
306: unless ($port_delete{$current}) {
307: push(@savedportfiles,$current);
308: }
309: }
310: if ($uploaded_delete) {
311: if ($uploaded_delete eq $uploadedurl) {
312: $Apache::lonhomework::results{"resource.$part.$id.uploadedfile"} = "";
313: $Apache::lonhomework::results{"resource.$part.$id.uploadedurl"} = "";
314: } else {
315: undef($uploaded_delete);
316: }
317: }
318: }
319: if ($env{'form.HWPORT'.$jspart.'_'.$id} ne '') {
320: my $newfiles= $env{'form.HWPORT'.$jspart.'_'.$id};
321: $newfiles =~s/,$//;
322: if ($newfiles =~ /[^\s]/) {
323: foreach my $file (split(/\s*,\s*/,$newfiles)) {
324: if ($file =~ /[^\s]/) {
325: push(@submitted_portfiles,$file);
326: }
327: }
328: }
329: }
330: if ($env{'form.HWFILETOOBIG'.$part.'_'.$id} ne '') {
331: $$award = 'EXCESS_FILESIZE';
332: } elsif ($env{'form.HWFILE'.$jspart.'_'.$id.'.filename'} ne '') {
333: my $newfile = $env{'form.HWFILE'.$jspart.'_'.$id.'.filename'};
334: if ($newfile =~ /[^\s]/) {
335: $submitted_upload = $newfile;
336: }
337: }
338: if (@savedportfiles) {
339: foreach my $file (reverse(@savedportfiles)) {
340: unless(grep(/^\Q$file\E$/,@submitted_portfiles)) {
341: unshift(@submitted_portfiles,$file);
342: }
343: }
344: }
345: if (@submitted_portfiles || $submitted_upload) {
346: my $uploadedfiletypes=
347: &Apache::lonnet::EXT("resource.$part".'_'."$id.uploadedfiletypes");
348: if ($uploadedfiletypes ne '') {
349: $uploadedfiletypes=~s/[^\w\,]//g;
350: $uploadedfiletypes=','.$uploadedfiletypes.',';
351: if (@submitted_portfiles) {
352: foreach my $file (@submitted_portfiles) {
353: my ($extension)=($file=~/\.(\w+)$/);
354: if ($uploadedfiletypes=~/\,\s*\Q$extension\E\s*\,/i) {
355: push(@acceptable_portfiles,$file);
356: }
357: }
358: }
359: if ($submitted_upload) {
360: my ($upload_ext)=($submitted_upload=~/\.(\w+)$/);
361: if ($uploadedfiletypes=~/\,\s*\Q$upload_ext\E\s*\,/i) {
362: $acceptable_upload = $submitted_upload;
363: } else {
364: $$award='INVALID_FILETYPE';
365: &delete_form_items($jspart,$id);
366: }
367: }
368: } else {
369: @acceptable_portfiles = @submitted_portfiles;
370: $acceptable_upload = $submitted_upload;
371: }
372: }
373: if ((@acceptable_portfiles) || ($acceptable_upload ne '')) {
374: my $maxfilesize=&Apache::lonnet::EXT("resource.$part".'_'."$id.maxfilesize");
375: if (!$maxfilesize) {
376: $maxfilesize = 10.0; #FIXME This should become a domain configuration
377: }
378: my %dirlist;
379: if (@acceptable_portfiles) {
380: foreach my $file (@acceptable_portfiles) {
381: my ($path,$filename) = ($file =~ m{^(.*/)([^/]+)$});
382: my $fullpath = '/userfiles/portfolio'.$path;
383: if (!exists($dirlist{$fullpath})) {
384: my @list = &Apache::lonnet::dirlist($fullpath,$udom,$uname,1);
385: $dirlist{$fullpath} = \@list;
386: }
387: if (ref($dirlist{$fullpath}) eq 'ARRAY') {
388: foreach my $dir_line (@{$dirlist{$fullpath}}) {
389: my ($fname,$dom,undef,$testdir,undef,undef,undef,undef,
390: $size,undef,$mtime,undef,undef,undef,$obs,undef) =
391: split(/\&/,$dir_line,16);
392: if ($filename eq $fname) {
393: my $mbsize = $size/(1024.0*1024.0);
394: if (ref($totalsize)) {
395: $$totalsize += $mbsize;
396: }
397: last;
398: }
399: }
400: }
401: if (ref($totalsize)) {
402: if ($$totalsize > $maxfilesize) {
403: $$award='EXCESS_FILESIZE';
404: &delete_form_items($jspart,$id);
405: } else {
406: push(@accepted_portfiles,$file);
407: }
408: } else {
409: push(@accepted_portfiles,$file);
410: }
411: }
412: }
413: if ($acceptable_upload ne '') {
414: if (ref($totalsize)) {
415: $$totalsize += $env{'form.HWFILESIZE'.$jspart.'_'.$id};
416: if ($$totalsize > $maxfilesize) {
417: $$award='EXCESS_FILESIZE';
418: delete($env{'form.HWFILE'.$jspart.'_'.$id});
419: } else {
420: $accepted_upload = $acceptable_upload;
421: }
422: } else {
423: $accepted_upload = $acceptable_upload;
424: }
425: }
426: }
427: if ($accepted_upload ne '') {
428: my ($map,$resid,$resurl)=&Apache::lonnet::decode_symb($symb);
429: my $turnindir;
430: my %userhash = &Apache::lonnet::userenvironment($udom,$uname,'turnindir');
431: $turnindir = $userhash{'turnindir'};
432: if ($turnindir eq '') {
433: $turnindir = &mt('turned in');
434: $turnindir =~ s/\W+/_/g;
435: my %newhash = (
436: 'turnindir' => $turnindir,
437: );
438: &Apache::lonnet::put('environment',\%newhash,$udom,$uname);
439: }
440: my $prefix = 'portfolio';
441: my $path = '/'.$turnindir.'/';
442: my $restitle=&Apache::lonnet::gettitle($symb);
443: $restitle =~ s/\W+/_/g;
444: if ($restitle eq '') {
445: $restitle = ($resurl =~ m{/[^/]+$});
446: if ($restitle eq '') {
447: $restitle = time;
448: }
449: }
450: my @pathitems;
451: my $navmap = Apache::lonnavmaps::navmap->new();
452: if (defined($navmap)) {
453: my $mapres = $navmap->getResourceByUrl($map);
454: if (ref($mapres)) {
455: my $pcslist = $mapres->map_hierarchy();
456: if ($pcslist ne '') {
457: foreach my $pc (split(/,/,$pcslist)) {
458: my $res = $navmap->getByMapPc($pc);
459: if (ref($res)) {
460: my $title = $res->compTitle();
461: $title =~ s/\W+/_/g;
462: if ($title ne '') {
463: push(@pathitems,$title);
464: }
465: }
466: }
467: }
468: my $maptitle = $mapres->compTitle();
469: $maptitle =~ s/\W+/_/g;
470: if ($maptitle ne '') {
471: push(@pathitems,$maptitle);
472: }
473: } else {
474: $$award = 'INTERNAL_ERROR';
475: }
476: } else {
477: $$award = 'INTERNAL_ERROR';
478: }
479: push(@pathitems,$restitle);
480: $path .= join('/',@pathitems);
481: my $formelement = 'HWFILE'.$jspart.'_'.$id;
482: my $fname = &Apache::lonnet::clean_filename($env{'form.'.$formelement.'.filename'});
483: my $url = '/uploaded/'.$udom.'/'.$uname.'/'.$prefix.$path.'/'.$fname;
484: my @stat = &Apache::lonnet::stat_file($url);
485: if (@stat && $stat[0] ne 'no_such_dir') {
486: $$award = 'FILENAME_INUSE';
487: } else {
488: my ($mode,%allfiles,%codebase);
489: my $result = &Apache::lonnet::userfileupload($formelement,'',
490: $prefix.$path,$mode,\%allfiles,\%codebase);
491: if ($result =~ m{^/uploaded/}) {
492: $stored_upload = $path.'/'.$fname;
493: $Apache::lonhomework::results{"resource.$part.$id.portfiles"} = $stored_upload;
494: push(@tolock,$stored_upload);
495: } else {
496: $$award = 'INTERNAL_ERROR';
497: }
498: }
499: delete($env{'form.HWFILE'.$jspart.'_'.$id});
500: }
501: if (@accepted_portfiles) {
502: if ($stored_upload) {
503: $Apache::lonhomework::results{"resource.$part.$id.portfiles"} .= ',';
504: }
505: $Apache::lonhomework::results{"resource.$part.$id.portfiles"}.=join(',',@accepted_portfiles);
506: push(@tolock,@accepted_portfiles);
507: }
508: if (!defined($Apache::lonhomework::results{"resource.$part.$id.portfiles"})) {
509: if (keys(%port_delete) > 0) {
510: $Apache::lonhomework::results{"resource.$part.$id.portfiles"} = "";
511: }
512: }
513: if (($Apache::lonhomework::history{"resource.$part.$id.portfiles"} ne
514: $Apache::lonhomework::results{"resource.$part.$id.portfiles"}) ||
515: ($uploaded_delete)) {
516: if (ref($uploadedflag)) {
517: $$uploadedflag=1;
518: }
519: }
520: &Apache::lonnet::unmark_as_readonly($udom,$uname,[$symb,$crsid]);
521: &Apache::lonnet::mark_as_readonly($udom,$uname,[@tolock],[$symb,$crsid]);
522: &Apache::lonnet::clear_selected_files($uname);
523: return;
524: }
525:
526: sub delete_form_items {
527: my ($jspart,$id) = @_;
528: delete($env{'form.HWFILE'.$jspart.'_'.$id.'.filename'});
529: delete($env{'form.HWFILE'.$jspart.'_'.$id.'.mimetype'});
530: delete($env{'form.HWFILE'.$jspart.'_'.$id});
531: }
532:
533: sub check_collaborators {
534: my ($ncol,$coll) = @_;
535: my %classlist=&Apache::lonnet::dump('classlist',
536: $env{'course.'.$env{'request.course.id'}.'.domain'},
537: $env{'course.'.$env{'request.course.id'}.'.num'});
538: my (@badcollaborators,$result);
539:
540: my (@collaborators) = split(/[,;\s]+/,$coll);
541: foreach my $entry (@collaborators) {
542: my $collaborator;
543: if ($entry =~ /:/) {
544: $collaborator = $entry;
545: } else {
546: $collaborator = $entry.':'.$env{'user.domain'};
547: }
548: if ($collaborator !~ /^$match_username:$match_domain$/) {
549: if (!grep(/^\Q$entry\E$/,@badcollaborators)) {
550: push(@badcollaborators,$entry);
551: }
552: } elsif (!grep(/^\Q$collaborator\E$/i,keys(%classlist))) {
553: if (!grep(/^\Q$entry\E$/,@badcollaborators)) {
554: push(@badcollaborators,$entry);
555: }
556: }
557: }
558:
559: my $numbad = scalar(@badcollaborators);
560: if ($numbad) {
561: $result = '<table border="0"><tr bgcolor="#ffbbbb"><td>';
562: if ($numbad == 1) {
563: $result .= &mt('The following user is invalid:');
564: } else {
565: $result .= &mt('The following [_1] users are invalid:',$numbad);
566: }
567: $result .= ' '.join(', ',@badcollaborators).'. '.&mt('Please correct.').
568: '</td></tr></table>';
569: }
570: my $toomany = scalar(@collaborators) - $ncol;
571: if ($toomany > 0) {
572: $result .= '<table border="0"><tr bgcolor="#ffbbbb"><td>'.
573: &mt('You have too many collaborators.').' '.
574: &mt('Please remove [quant,_1,collaborator].',$toomany).
575: '</td></tr></table>';
576: }
577: return $result;
578: }
579:
580: 1;
581: __END__
582:
583:
584: =pod
585:
586: =head1 NAME
587:
588: Apache::essayresponse
589:
590: =head1 SYNOPSIS
591:
592: Handler to evaluate essay (ungraded) style responses.
593:
594: This is part of the LearningOnline Network with CAPA project
595: described at http://www.lon-capa.org.
596:
597: =head1 SUBROUTINES
598:
599: =over
600:
601: =item start_essayresponse()
602:
603: =item end_essayresponse()
604:
605: =item format_prior_response()
606:
607: =item file_submission()
608:
609: =item delete_form_items()
610:
611: =item check_collaborators()
612:
613: =back
614:
615: =cut
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