1: # The LearningOnline Network with CAPA
2: # essay (ungraded) style responses
3: #
4: # $Id: essayresponse.pm,v 1.110 2010/08/23 03:21:26 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: ($Apache::lonhomework::type eq 'surveycred') ||
63: ($Apache::lonhomework::type eq 'anonsurvey') ||
64: ($Apache::lonhomework::type eq 'anonsurveycred')) {
65: $result.= '<input type="hidden" name="HWDRAFT'.$part.'_'.$id.'" value="yes" />';
66: }
67: my $status_text = &mt('Submission type');
68: if ($Apache::lonhomework::history{"resource.$part.award"} eq 'DRAFT') {
69: $status_text .= '<br />'.&mt('(Currently -- draft)');
70: }
71: $result.= '<p>'.&Apache::lonhtmlcommon::start_pick_box().
72: &Apache::lonhtmlcommon::row_title($status_text);
73: if (($Apache::lonhomework::type ne 'survey') &&
74: ($Apache::lonhomework::type ne 'surveycred') &&
75: ($Apache::lonhomework::type ne 'anonsurvey') &&
76: ($Apache::lonhomework::type ne 'anonsurveycred')) {
77: my $closure;
78: unless ($ncol || $uploadedfiletypes) {
79: $closure = 1;
80: }
81: $result.=
82: '<label>'.
83: '<input type="radio" name="HWDRAFT'.$part.'_'.$id.'" value="yes" checked="checked" /> '.
84: &mt('Submit entries below as answer to receive credit').
85: '</label> <br />'.
86: '<label>'.
87: '<input type="radio" name="HWDRAFT'.$part.'_'.$id.'" value="no" /> '.
88: &mt('Save entries below (not submitted for credit yet)').
89: '</label>'.
90: &Apache::lonhtmlcommon::row_closure($closure);
91: }
92:
93: if ($ncol > 0) {
94: $result.= &Apache::lonhtmlcommon::row_title(&mt('Collaborators')).
95: '<label>'.
96: &mt('Collaborators:').' <input type="text" size="70" max="80" name="HWCOL'.
97: $part.'_'.$id.'" value="'.$coll.'" /><br />'.
98: &mt('(Enter a maximum of [quant,_1,collaborator] using username or username:domain, e.g. smithje or smithje:[_2].)',$ncol,$env{'user.domain'});
99: if ($ncol > 1) {
100: $result .= '<br />'.&mt('If entering more than one, use spaces to separate the collaborators.');
101: }
102: $result .= '</label><br />';
103: $result .= &check_collaborators($ncol,$coll) if ($coll =~ /\w+/);
104: $result .= &Apache::lonhtmlcommon::row_closure();
105: }
106: my $filesfrom = 'both';
107: my $stuname = &Apache::lonnet::EXT('user.name');
108: my $studom = &Apache::lonnet::EXT('user.domain');
109: if (!&Apache::lonnet::usertools_access($stuname,$studom,'portfolio')) {
110: $filesfrom = 'uploadonly';
111: }
112: $result.=&Apache::inputtags::file_selector($part,$id,$uploadedfiletypes,
113: $filesfrom,undef,$maxfilesize);
114: $result.=&Apache::lonhtmlcommon::end_pick_box().'</p>';
115: } elsif ($target eq 'web' &&
116: $Apache::inputtags::status[-1] ne 'CAN_ANSWER') {
117: my $part= $Apache::inputtags::part;
118: my @msgs;
119: if ($Apache::lonhomework::history{"resource.$part.$id.collaborators"} =~ /\S/) {
120: my $coll= &HTML::Entities::encode($Apache::lonhomework::history{"resource.$part.$id.collaborators"},'<>&"');
121: $result .= '<td><i>'.&mt('Collaborated with [_1]',$coll).'</i></td>';
122: }
123:
124: my $current_files_display = &Apache::inputtags::current_file_submissions($part,$id);
125: if ($current_files_display) {
126: $result .= '<td><b>'.&mt('Submitted files:').'</b><br />'.
127: $current_files_display.'</td>';
128: }
129:
130: if ($result ne '') {
131: $result =
132: '<table class="LC_pastsubmission"><tr>'.$result.
133: '</tr></table>';
134: }
135: }
136: return $result;
137: }
138:
139: sub end_essayresponse {
140: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
141: my $part = $Apache::inputtags::part;
142: my $id = $Apache::inputtags::response[-1];
143: my $increment = &Apache::response::repetition();
144: my $result;
145: if ( $target eq 'grade' ) {
146: # Deal with collaborators
147: my $collaborators = $env{'form.HWCOL'.$part.'_'.$id};
148: my $previous_list= &HTML::Entities::encode($Apache::lonhomework::history{"resource.$part.$id.collaborators"},'<>&"');
149: if ($collaborators ne $previous_list) {
150: # &Apache::lonnet::logthis("New collaborators [$collaborators] [$previous_list]");
151: $Apache::lonhomework::results{"resource.$part.$id.collaborators"}=$collaborators;
152: }
153: # Scantron
154: if ( &Apache::response::submitted('scantron') ) {
155: $increment=&Apache::response::scored_response($part,$id);
156: } elsif ( &Apache::response::submitted() ) {
157: my $response = $env{'form.HWVAL_'.$id};
158: my $jspart=$part;
159: $jspart=~s/\./_/g;
160: my $filename = $env{'form.HWFILE'.$jspart.'_'.$id.'.filename'} ||
161: $env{'form.HWFILETOOBIG'.$part.'_'.$id};
162: my $portfiles = $env{'form.HWPORT'.$jspart.'_'.$id};
163: my @deletions = &Apache::loncommon::get_env_multiple('form.HWFILE'.$jspart.'_'.$id.'_delete');
164: my ($is_submit,$was_draft);
165: if ($env{'form.HWDRAFT'.$part.'_'.$id} eq 'yes') {
166: $is_submit = 1;
167: }
168: if ($Apache::lonhomework::history{"resource.$part.award"} eq 'DRAFT') {
169: $was_draft = 1;
170: }
171: if (($response =~ /[^\s]/) || ($filename =~ /[^\s]/) || ($portfiles =~ /[^\s]/) ||
172: (@deletions > 0) || ($was_draft && $is_submit)) {
173: my $award='DRAFT';
174: if ($env{'form.HWDRAFT'.$part.'_'.$id} eq 'yes') {
175: if ($Apache::lonhomework::type eq 'anonsurvey') {
176: $award='ANONYMOUS';
177: } elsif ($Apache::lonhomework::type eq 'anonsurveycred') {
178: $award='ANONYMOUS_CREDIT';
179: } elsif ($Apache::lonhomework::type eq 'surveycred') {
180: $award='SUBMITTED_CREDIT';
181: } else {
182: $award='SUBMITTED';
183: }
184: }
185: my $uploadedflag=0;
186: my $totalsize=0;
187: &file_submission($part,$id,\$award,\$uploadedflag,\$totalsize,\@deletions);
188: $Apache::lonhomework::results{"resource.$part.$id.submission"}=$response;
189: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$award;
190: my %previous=&Apache::response::check_for_previous($response,$part,$id);
191: if ($uploadedflag) {
192: if ($award eq 'FILENAME_INUSE') {
193: delete($Apache::lonhomework::results{"resource.$id.tries"});
194: }
195: } else {
196: &Apache::response::handle_previous(\%previous,$award);
197: }
198: #
199: # Store with resource author for similarity testing
200: #
201: if ($award eq 'SUBMITTED') {
202: my ($symb,$crsid,$domain,$name)=
203: &Apache::lonnet::whichuser();
204: if ($crsid) {
205: my $akey=join('.',&escape($name),&escape($domain),
206: &escape($crsid));
207: my $essayurl=
208: &Apache::lonnet::declutter($ENV{'REQUEST_URI'});
209: my ($adom,$aname,$apath)=
210: ($essayurl=~/^($LONCAPA::domain_re)\/($LONCAPA::username_re)\/(.*)$/);
211: $apath=&escape($apath);
212: $apath=~s/\W/\_/gs;
213: &Apache::lonnet::put('nohist_essay_'.$apath,
214: { $akey => $response },$adom,$aname);
215: }
216: }
217: }
218: }
219: } elsif ($target eq 'edit') {
220: $result.=&Apache::edit::end_table();
221:
222: } elsif ($target eq 'tex'
223: && $Apache::lonhomework::type eq 'exam') {
224: $result .= &Apache::inputtags::exam_score_line($target);
225:
226: } elsif ($target eq 'answer') {
227: $result.=&Apache::response::answer_header($$tagstack[-1]);
228: my $answer = &mt('Essay will be hand graded.');
229: $result.=&Apache::response::answer_part($$tagstack[-1],$answer,
230: {'no_verbatim' => 1});
231: $result.=&Apache::response::answer_footer($$tagstack[-1]);
232: }
233: if ($target eq 'web') {
234: &Apache::response::setup_prior_tries_hash(\&format_prior_response,
235: ['portfiles',
236: 'uploadedurl']);
237: }
238:
239: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
240: $target eq 'tex' || $target eq 'analyze') {
241: &Apache::lonxml::increment_counter($increment, "$part.$id");
242:
243: if ($target eq 'analyze') {
244: $Apache::lonhomework::analyze{"$part.$id.type"} = 'essayresponse';
245: push (@{ $Apache::lonhomework::analyze{"parts"} },"$part.$id");
246: &Apache::lonhomework::set_bubble_lines();
247: }
248: }
249: &Apache::response::end_response;
250:
251: return $result;
252: }
253:
254: sub format_prior_response {
255: my ($mode,$answer,$other_data) = @_;
256: my $output;
257:
258: my (undef,undef,$udom,$uname) = &Apache::lonnet::whichuser();
259: my $port_url = '/uploaded/'.$udom.'/'.$uname.'/portfolio/';
260:
261: my $file_list;
262:
263: foreach my $file (split(/\s*,\s*/,
264: $other_data->[0].','.$other_data->[1])) {
265: next if ($file!~/\S/);
266: if ($file !~ m{^/uploaded/}) { $file=$port_url.$file; }
267: $file=~s|/+|/|g;
268: &Apache::lonnet::allowuploaded('/adm/essayresponse',$file);
269: $file_list.='<li><span class="LC_nobreak"><a href="'.$file.'?rawmode=1" target="lonGRDs"><img src="'.
270: &Apache::loncommon::icon($file).'" alt="file icon" border="0" /> '.$file.
271: '</a></span></li>'."\n";
272: }
273: if ($file_list) {
274: $output.= &mt('Submitted Files').'<ul>'.$file_list.'</ul>';
275: }
276: if ($answer =~ /\S/) {
277: $output.='<p>'.&mt('Submitted text').
278: '<blockquote>'.$answer.'</blockquote></p>';
279: }
280:
281: return '<div class="LC_prior_essay">'.$output.'</div>';
282: }
283:
284: sub file_submission {
285: my ($part,$id,$award,$uploadedflag,$totalsize,$deletions)=@_;
286: my $files;
287: my $jspart=$part;
288: $jspart=~s/\./_/g;
289: my ($symb,$crsid,$udom,$uname) = &Apache::lonnet::whichuser();
290: my %crsinfo = &Apache::lonnet::coursedescription($crsid);
291: my $cdom = $crsinfo{'domain'};
292: my $cnum = $crsinfo{'num'};
293: my (@portfiles,$uploadedurl,@submitted_portfiles,$submitted_upload,
294: @acceptable_portfiles,$acceptable_upload,@accepted_portfiles,
295: $accepted_upload,@savedportfiles,$stored_upload,@tolock,
296: %port_delete,$uploaded_delete);
297: if ($Apache::lonhomework::history{"resource.$part.$id.portfiles"} ||
298: $Apache::lonhomework::history{"resource.$part.$id.uploadedurl"}) {
299: if ($Apache::lonhomework::history{"resource.$part.$id.portfiles"}) {
300: @portfiles = split(/,/,$Apache::lonhomework::history{"resource.$part.$id.portfiles"});
301: }
302: $uploadedurl = $Apache::lonhomework::history{"resource.$part.$id.uploadedurl"};
303: if (ref($deletions) eq 'ARRAY') {
304: if (@{$deletions} > 0) {
305: foreach my $file (@{$deletions}) {
306: $file = &HTML::Entities::decode($file);
307: if (grep(/^\Q$file\E$/,@portfiles)) {
308: $port_delete{$file} = 1;
309: } elsif ($file =~ m{^/uploaded/\Q$udom\E/\Q$uname\E/essayresponse/\Q$cdom\E/\Q$cnum\E/}) {
310: $uploaded_delete = $file;
311: }
312: }
313: }
314: }
315: foreach my $current (@portfiles) {
316: unless ($port_delete{$current}) {
317: push(@savedportfiles,$current);
318: }
319: }
320: if ($uploaded_delete) {
321: $Apache::lonhomework::results{"resource.$part.$id.uploadedfile"} = "";
322: $Apache::lonhomework::results{"resource.$part.$id.uploadedurl"} = "";
323: }
324: }
325: if ($env{'form.HWPORT'.$jspart.'_'.$id} ne '') {
326: my $newfiles= $env{'form.HWPORT'.$jspart.'_'.$id};
327: $newfiles =~s/,$//;
328: if ($newfiles =~ /[^\s]/) {
329: foreach my $file (split(/\s*,\s*/,$newfiles)) {
330: if ($file =~ /[^\s]/) {
331: push(@submitted_portfiles,$file);
332: }
333: }
334: }
335: }
336: if ($env{'form.HWFILETOOBIG'.$part.'_'.$id} ne '') {
337: $$award = 'EXCESS_FILESIZE';
338: } elsif ($env{'form.HWFILE'.$jspart.'_'.$id.'.filename'} ne '') {
339: my $newfile = $env{'form.HWFILE'.$jspart.'_'.$id.'.filename'};
340: if ($newfile =~ /[^\s]/) {
341: $submitted_upload = $newfile;
342: }
343: }
344: if (@savedportfiles) {
345: foreach my $file (reverse(@savedportfiles)) {
346: unless(grep(/^\Q$file\E$/,@submitted_portfiles)) {
347: unshift(@submitted_portfiles,$file);
348: }
349: }
350: }
351: if (@submitted_portfiles || $submitted_upload) {
352: my $uploadedfiletypes=
353: &Apache::lonnet::EXT("resource.$part".'_'."$id.uploadedfiletypes");
354: if ($uploadedfiletypes ne '') {
355: $uploadedfiletypes=~s/[^\w\,]//g;
356: $uploadedfiletypes=','.$uploadedfiletypes.',';
357: if (@submitted_portfiles) {
358: foreach my $file (@submitted_portfiles) {
359: my ($extension)=($file=~/\.(\w+)$/);
360: if ($uploadedfiletypes=~/\,\s*\Q$extension\E\s*\,/i) {
361: push(@acceptable_portfiles,$file);
362: }
363: }
364: }
365: if ($submitted_upload) {
366: my ($upload_ext)=($submitted_upload=~/\.(\w+)$/);
367: if ($uploadedfiletypes=~/\,\s*\Q$upload_ext\E\s*\,/i) {
368: $acceptable_upload = $submitted_upload;
369: } else {
370: $$award='INVALID_FILETYPE';
371: &delete_form_items($jspart,$id);
372: }
373: }
374: } else {
375: @acceptable_portfiles = @submitted_portfiles;
376: $acceptable_upload = $submitted_upload;
377: }
378: }
379: if ((@acceptable_portfiles) || ($acceptable_upload ne '')) {
380: my $maxfilesize=&Apache::lonnet::EXT("resource.$part".'_'."$id.maxfilesize");
381: if (!$maxfilesize) {
382: $maxfilesize = 10.0; #FIXME This should become a domain configuration
383: }
384: my %dirlist;
385: if (@acceptable_portfiles) {
386: foreach my $file (@acceptable_portfiles) {
387: my ($path,$filename) = ($file =~ m{^(.*/)([^/]+)$});
388: my $fullpath = '/userfiles/portfolio'.$path;
389: if (!exists($dirlist{$fullpath})) {
390: my @list = &Apache::lonnet::dirlist($fullpath,$udom,$uname,1);
391: $dirlist{$fullpath} = \@list;
392: }
393: if (ref($dirlist{$fullpath}) eq 'ARRAY') {
394: foreach my $dir_line (@{$dirlist{$fullpath}}) {
395: my ($fname,$dom,undef,$testdir,undef,undef,undef,undef,
396: $size,undef,$mtime,undef,undef,undef,$obs,undef) =
397: split(/\&/,$dir_line,16);
398: if ($filename eq $fname) {
399: my $mbsize = $size/(1024.0*1024.0);
400: if (ref($totalsize)) {
401: $$totalsize += $mbsize;
402: }
403: last;
404: }
405: }
406: }
407: if (ref($totalsize)) {
408: if ($$totalsize > $maxfilesize) {
409: $$award='EXCESS_FILESIZE';
410: &delete_form_items($jspart,$id);
411: } else {
412: push(@accepted_portfiles,$file);
413: }
414: } else {
415: push(@accepted_portfiles,$file);
416: }
417: }
418: }
419: if ($acceptable_upload ne '') {
420: if (ref($totalsize)) {
421: $$totalsize += $env{'form.HWFILESIZE'.$jspart.'_'.$id};
422: if ($$totalsize > $maxfilesize) {
423: $$award='EXCESS_FILESIZE';
424: delete($env{'form.HWFILE'.$jspart.'_'.$id});
425: } else {
426: $accepted_upload = $acceptable_upload;
427: }
428: } else {
429: $accepted_upload = $acceptable_upload;
430: }
431: }
432: }
433: if ($accepted_upload ne '') {
434: my ($map,$resid,$resurl)=&Apache::lonnet::decode_symb($symb);
435: my $turnindir;
436: my %userhash = &Apache::lonnet::userenvironment($udom,$uname,'turnindir');
437: $turnindir = $userhash{'turnindir'};
438: if ($turnindir eq '') {
439: $turnindir = &mt('turned in');
440: $turnindir =~ s/\W+/_/g;
441: my %newhash = (
442: 'turnindir' => $turnindir,
443: );
444: &Apache::lonnet::put('environment',\%newhash,$udom,$uname);
445: }
446: my $prefix = 'portfolio';
447: my $path = '/'.$turnindir.'/';
448: my $restitle=&Apache::lonnet::gettitle($symb);
449: $restitle =~ s/\W+/_/g;
450: if ($restitle eq '') {
451: $restitle = ($resurl =~ m{/[^/]+$});
452: if ($restitle eq '') {
453: $restitle = time;
454: }
455: }
456: my @pathitems;
457: my $navmap = Apache::lonnavmaps::navmap->new();
458: if (defined($navmap)) {
459: my $mapres = $navmap->getResourceByUrl($map);
460: if (ref($mapres)) {
461: my $pcslist = $mapres->map_hierarchy();
462: if ($pcslist ne '') {
463: foreach my $pc (split(/,/,$pcslist)) {
464: my $res = $navmap->getByMapPc($pc);
465: if (ref($res)) {
466: my $title = $res->compTitle();
467: $title =~ s/\W+/_/g;
468: if ($title ne '') {
469: push(@pathitems,$title);
470: }
471: }
472: }
473: }
474: my $maptitle = $mapres->compTitle();
475: $maptitle =~ s/\W+/_/g;
476: if ($maptitle ne '') {
477: push(@pathitems,$maptitle);
478: }
479: } else {
480: $$award = 'INTERNAL_ERROR';
481: }
482: } else {
483: $$award = 'INTERNAL_ERROR';
484: }
485: push(@pathitems,$restitle);
486: $path .= join('/',@pathitems);
487: my $formelement = 'HWFILE'.$jspart.'_'.$id;
488: my $fname = $env{'form.'.$formelement.'.filename'};
489: &Apache::lonnet::clean_filename($fname);
490: my $url = '/uploaded/'.$udom.'/'.$uname.'/'.$prefix.$path.'/'.$fname;
491: my @stat = &Apache::lonnet::stat_file($url);
492: if (@stat && $stat[0] ne 'no_such_dir') {
493: $$award = 'FILENAME_INUSE';
494: } else {
495: my ($mode,%allfiles,%codebase);
496: my $result = &Apache::lonnet::userfileupload($formelement,'',
497: $prefix.$path,$mode,\%allfiles,\%codebase);
498: if ($result =~ m{^/uploaded/}) {
499: $stored_upload = $path.'/'.$fname;
500: $Apache::lonhomework::results{"resource.$part.$id.portfiles"} = $stored_upload;
501: push(@tolock,$stored_upload);
502: } else {
503: $$award = 'INTERNAL_ERROR';
504: }
505: }
506: delete($env{'form.HWFILE'.$jspart.'_'.$id});
507: }
508: if (@accepted_portfiles) {
509: if ($stored_upload) {
510: $Apache::lonhomework::results{"resource.$part.$id.portfiles"} .= ',';
511: }
512: $Apache::lonhomework::results{"resource.$part.$id.portfiles"}.=join(',',@accepted_portfiles);
513: push(@tolock,@accepted_portfiles);
514: }
515: if (!defined($Apache::lonhomework::results{"resource.$part.$id.portfiles"})) {
516: if (keys(%port_delete) > 0) {
517: $Apache::lonhomework::results{"resource.$part.$id.portfiles"} = "";
518: }
519: }
520: if ($Apache::lonhomework::history{"resource.$part.$id.portfiles"} ne $Apache::lonhomework::results{"resource.$part.$id.portfiles"}) {
521: if (ref($uploadedflag)) {
522: $$uploadedflag=1;
523: }
524: }
525: &Apache::lonnet::unmark_as_readonly($udom,$uname,[$symb,$crsid]);
526: &Apache::lonnet::mark_as_readonly($udom,$uname,[@tolock],[$symb,$crsid]);
527: &Apache::lonnet::clear_selected_files($uname);
528: return;
529: }
530:
531: sub delete_form_items {
532: my ($jspart,$id) = @_;
533: delete($env{'form.HWFILE'.$jspart.'_'.$id.'.filename'});
534: delete($env{'form.HWFILE'.$jspart.'_'.$id.'.mimetype'});
535: delete($env{'form.HWFILE'.$jspart.'_'.$id});
536: }
537:
538: sub check_collaborators {
539: my ($ncol,$coll) = @_;
540: my %classlist=&Apache::lonnet::dump('classlist',
541: $env{'course.'.$env{'request.course.id'}.'.domain'},
542: $env{'course.'.$env{'request.course.id'}.'.num'});
543: my (@badcollaborators,$result);
544:
545: my (@collaborators) = split(/[,;\s]+/,$coll);
546: foreach my $entry (@collaborators) {
547: my $collaborator;
548: if ($entry =~ /:/) {
549: $collaborator = $entry;
550: } else {
551: $collaborator = $entry.':'.$env{'user.domain'};
552: }
553: if ($collaborator !~ /^$match_username:$match_domain$/) {
554: if (!grep(/^\Q$entry\E$/,@badcollaborators)) {
555: push(@badcollaborators,$entry);
556: }
557: } elsif (!grep(/^\Q$collaborator\E$/i,keys(%classlist))) {
558: if (!grep(/^\Q$entry\E$/,@badcollaborators)) {
559: push(@badcollaborators,$entry);
560: }
561: }
562: }
563:
564: my $numbad = scalar(@badcollaborators);
565: if ($numbad) {
566: $result = '<table border="0"><tr bgcolor="#ffbbbb"><td>';
567: if ($numbad == 1) {
568: $result .= &mt('The following user is invalid:');
569: } else {
570: $result .= &mt('The following [_1] users are invalid:',$numbad);
571: }
572: $result .= ' '.join(', ',@badcollaborators).'. '.&mt('Please correct.').
573: '</td></tr></table>';
574: }
575: my $toomany = scalar(@collaborators) - $ncol;
576: if ($toomany > 0) {
577: $result .= '<table border="0"><tr bgcolor="#ffbbbb"><td>'.
578: &mt('You have too many collaborators.').' '.
579: &mt('Please remove [quant,_1,collaborator].',$toomany).
580: '</td></tr></table>';
581: }
582: return $result;
583: }
584:
585: 1;
586: __END__
587:
588:
589: =pod
590:
591: =head1 NAME
592:
593: Apache::essayresponse
594:
595: =head1 SYNOPSIS
596:
597: Handler to evaluate essay (ungraded) style responses.
598:
599: This is part of the LearningOnline Network with CAPA project
600: described at http://www.lon-capa.org.
601:
602: =head1 SUBROUTINES
603:
604: =over
605:
606: =item start_essayresponse()
607:
608: =item end_essayresponse()
609:
610: =item format_prior_response()
611:
612: =item file_submission()
613:
614: =item delete_form_items()
615:
616: =item check_collaborators()
617:
618: =back
619:
620: =cut
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