# The LearningOnline Network with CAPA
# essay (ungraded) style responses
#
# $Id: essayresponse.pm,v 1.126 2019/02/19 14:24:01 raeburn Exp $
#
# Copyright Michigan State University Board of Trustees
#
# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
#
# LON-CAPA is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# LON-CAPA is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with LON-CAPA; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# /home/httpd/html/adm/gpl.txt
#
# http://www.lon-capa.org/
#
package Apache::essayresponse;
use strict;
use Apache::lonxml();
use Apache::lonhtmlcommon;
use Apache::loncommon;
use Apache::lonnet;
use Apache::lonnavmaps;
use Apache::lonlocal;
use LONCAPA qw(:DEFAULT :match);
BEGIN {
&Apache::lonxml::register('Apache::essayresponse',('essayresponse'));
}
sub start_essayresponse {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result;
my $id = &Apache::response::start_response($parstack,$safeeval);
if ($target eq 'meta') {
$result=&Apache::response::meta_package_write('essayresponse');
} elsif ($target eq 'web') {
my $part= $Apache::inputtags::part;
my $coll;
if ($Apache::lonhomework::history{"resource.$part.$id.collaborators"} =~ /\S/) {
$coll = &HTML::Entities::encode($Apache::lonhomework::history{"resource.$part.$id.collaborators"},'<>&"');
}
if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
my $ncol= &Apache::lonnet::EXT("resource.$part".'_'."$id.maxcollaborators");
my $uploadedfiletypes= &Apache::lonnet::EXT("resource.$part".'_'."$id.uploadedfiletypes");
$uploadedfiletypes=~s/[^\w\,]//g;
my $maxfilesize=&Apache::lonnet::EXT("resource.$part".'_'."$id.maxfilesize");
if (!defined($maxfilesize)) {
$maxfilesize = 10.0; #FIXME This should become a domain configuration
}
my $hiddendraft;
if (($Apache::lonhomework::type eq 'survey') ||
($Apache::lonhomework::type eq 'surveycred') ||
($Apache::lonhomework::type eq 'anonsurvey') ||
($Apache::lonhomework::type eq 'anonsurveycred')) {
$hiddendraft = '<input type="hidden" name="HWDRAFT'.$part.'_'.$id.'" value="yes" />';
} else {
$result = &draft_row($part,$id,$ncol,$uploadedfiletypes,'essayresponse');
}
if ($ncol > 0) {
$result .= &get_collab_row($part,$id,$coll,$ncol);
}
my $filesfrom = 'both';
my $stuname = &Apache::lonnet::EXT('user.name');
my $studom = &Apache::lonnet::EXT('user.domain');
if (!&Apache::lonnet::usertools_access($stuname,$studom,'portfolio')) {
$filesfrom = 'uploadonly';
}
$result.=&Apache::inputtags::file_selector($part,$id,$uploadedfiletypes,
$filesfrom,undef,$maxfilesize);
if ($result) {
$result =
'<div>'.$hiddendraft.
&Apache::lonhtmlcommon::start_pick_box().
$result.
&Apache::lonhtmlcommon::end_pick_box().'</div>';
} else {
$result = $hiddendraft;
}
} else {
$result = &show_status_table($part,$id,$coll);
}
}
return $result;
}
sub draft_row {
my ($part,$id,$ncol,$uploadedfiletypes,$resptype) = @_;
my $status_text = &mt('Submission type');
if ($Apache::lonhomework::history{"resource.$part.award"} eq 'DRAFT') {
$status_text .= '<br />'.&mt('(Currently -- draft)');
}
my $closure;
unless ($ncol || $uploadedfiletypes) {
$closure = 1;
}
my %label = (
draft => {
essayresponse => &mt('Save entries below (not submitted for credit yet)'),
externalresponse => &mt('Save entries below (not submitted for grading yet)'),
},
submit => {
essayresponse => &mt('Submit entries below as answer to receive credit'),
externalresponse => &mt('Submit entries below for grading'),
}
);
return &Apache::lonhtmlcommon::row_title($status_text).
'<label>'.
'<input type="radio" name="HWDRAFT'.$part.'_'.$id.'" value="yes" checked="checked" />'.
' '.$label{'submit'}{$resptype}.'</label> <br />'.
'<label>'.
'<input type="radio" name="HWDRAFT'.$part.'_'.$id.'" value="no" /> '.
$label{'draft'}{$resptype}.'</label>'.
&Apache::lonhtmlcommon::row_closure($closure);
}
sub get_collab_row {
my ($part,$id,$coll,$ncol,$closure) = @_;
my $output = &Apache::lonhtmlcommon::row_title(&mt('Collaborators')).
'<label>'.
&mt('Collaborators:').' <input type="text" size="70" max="80" name="HWCOL'.
$part.'_'.$id.'" value="'.$coll.'" /><br />'.
&mt('Enter a maximum of [quant,_1,collaborator] using username or username:domain, e.g. smithje or smithje:[_2].',
$ncol,$env{'user.domain'});
if ($ncol > 1) {
$output .= '<br />'.&mt('If entering more than one, use spaces to separate the collaborators.');
}
$output .= '</label><br />';
$output .= &check_collaborators($ncol,$coll) if ($coll =~ /\w+/);
$output .= &Apache::lonhtmlcommon::row_closure($closure);
return $output;
}
sub show_status_table {
my ($part,$id,$coll) = @_;
my $output;
if ($coll) {
$output = '<td><i>'.&mt('Collaborated with [_1]',$coll).'</i></td>';
}
my $current_files_display = &Apache::inputtags::current_file_submissions($part,$id);
if ($current_files_display) {
$output .= '<td><b>'.&mt('Submitted files:').'</b><br />'.
$current_files_display.'</td>';
}
if ($output ne '') {
return '<table class="LC_pastsubmission"><tr>'.$output.
'</tr></table>';
}
return;
}
sub end_essayresponse {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $part = $Apache::inputtags::part;
my $id = $Apache::inputtags::response[-1];
my $increment = &Apache::response::repetition();
my $result;
if ( $target eq 'grade' ) {
&get_collaborators($part,$id);
# Scantron
if ( &Apache::response::submitted('scantron') ) {
$increment=&Apache::response::scored_response($part,$id);
} elsif ( &Apache::response::submitted() ) {
my $response = $env{'form.HWVAL_'.$id};
my $jspart=$part;
$jspart=~s/\./_/g;
my $filename = $env{'form.HWFILE'.$jspart.'_'.$id.'.filename'} ||
$env{'form.HWFILETOOBIG'.$part.'_'.$id};
my $portfiles = $env{'form.HWPORT'.$jspart.'_'.$id};
my @deletions = &Apache::loncommon::get_env_multiple('form.HWFILE'.$jspart.'_'.$id.'_delete');
my ($is_submit,$was_draft);
if ($env{'form.HWDRAFT'.$part.'_'.$id} eq 'yes') {
$is_submit = 1;
}
if ($Apache::lonhomework::history{"resource.$part.award"} eq 'DRAFT') {
$was_draft = 1;
}
if (($response =~ /[^\s]/) || ($filename =~ /[^\s]/) || ($portfiles =~ /[^\s]/) ||
(@deletions > 0) || ($was_draft && $is_submit)) {
my $award='DRAFT';
if ($env{'form.HWDRAFT'.$part.'_'.$id} eq 'yes') {
if ($Apache::lonhomework::type eq 'anonsurvey') {
$award='ANONYMOUS';
} elsif ($Apache::lonhomework::type eq 'anonsurveycred') {
$award='ANONYMOUS_CREDIT';
} elsif ($Apache::lonhomework::type eq 'surveycred') {
$award='SUBMITTED_CREDIT';
} else {
$award='SUBMITTED';
}
}
my $uploadedflag=0;
my $totalsize=0;
&file_submission($part,$id,\$award,\$uploadedflag,\$totalsize,\@deletions);
$Apache::lonhomework::results{"resource.$part.$id.submission"}=$response;
$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$award;
my %previous=&Apache::response::check_for_previous($response,$part,$id);
if ($uploadedflag) {
if ($award eq 'FILENAME_INUSE') {
delete($Apache::lonhomework::results{"resource.$id.tries"});
}
} else {
&Apache::response::handle_previous(\%previous,$award);
}
#
# Store with resource author for similarity testing
#
if ($award eq 'SUBMITTED') {
my ($symb,$crsid,$domain,$name)=
&Apache::lonnet::whichuser();
if ($crsid) {
my $akey=join('.',&escape($name),&escape($domain),
&escape($crsid));
my $essayurl=
&Apache::lonnet::declutter($ENV{'REQUEST_URI'});
if ($essayurl eq 'lib/templates/simpleproblem.problem') {
my %crsinfo = &Apache::lonnet::coursedescription($crsid);
my $cdom = $crsinfo{'domain'};
my $cnum = $crsinfo{'num'};
my ($map,$id,$res) = &Apache::lonnet::decode_symb($symb);
if ($map =~ m{^\Quploaded/$cdom/$cnum/\E(default(?:|_\d+)\.(?:sequence|page))$}) {
my $apath = $1.'_'.$id;
$apath=~s/\W/\_/gs;
my $akey = join('.',&escape($name),&escape($domain));
&Apache::lonnet::put('nohist_essay_'.$apath,
{ $akey => $response },$cdom,$cnum);
}
} else {
my ($adom,$aname,$apath)=
($essayurl=~/^($LONCAPA::domain_re)\/($LONCAPA::username_re)\/(.*)$/);
$apath=&escape($apath);
$apath=~s/\W/\_/gs;
&Apache::lonnet::put('nohist_essay_'.$apath,
{ $akey => $response },$adom,$aname);
}
}
}
}
}
} elsif ($target eq 'edit') {
$result.=&Apache::edit::end_table();
} elsif ($target eq 'tex'
&& $Apache::lonhomework::type eq 'exam') {
$result .= &Apache::inputtags::exam_score_line($target);
} elsif ($target eq 'answer') {
$result.=&Apache::response::answer_header($$tagstack[-1]);
my $answer = &mt('Essay will be hand graded.');
$result.=&Apache::response::answer_part($$tagstack[-1],$answer,
{'no_verbatim' => 1});
$result.=&Apache::response::answer_footer($$tagstack[-1]);
}
if ($target eq 'web') {
&Apache::response::setup_prior_tries_hash(\&format_prior_response,
['portfiles',
'uploadedurl']);
}
if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
$target eq 'tex' || $target eq 'analyze') {
&Apache::lonxml::increment_counter($increment, "$part.$id");
if ($target eq 'analyze') {
$Apache::lonhomework::analyze{"$part.$id.type"} = 'essayresponse';
push (@{ $Apache::lonhomework::analyze{"parts"} },"$part.$id");
&Apache::lonhomework::set_bubble_lines();
}
}
&Apache::response::end_response;
return $result;
}
sub get_collaborators {
my ($part,$id) = @_;
my $collaborators = $env{'form.HWCOL'.$part.'_'.$id};
my $previous_list= &HTML::Entities::encode($Apache::lonhomework::history{"resource.$part.$id.collaborators"},'<>&"'
);
if ($collaborators ne $previous_list) {
$Apache::lonhomework::results{"resource.$part.$id.collaborators"}=$collaborators;
}
}
sub format_prior_response {
my ($mode,$answer,$other_data) = @_;
my $output;
my (undef,undef,$udom,$uname) = &Apache::lonnet::whichuser();
my $port_url = '/uploaded/'.$udom.'/'.$uname.'/portfolio/';
my $file_list;
foreach my $file (split(/\s*,\s*/,
$other_data->[0].','.$other_data->[1])) {
next if ($file!~/\S/);
if ($file !~ m{^/uploaded/}) { $file=$port_url.$file; }
$file=~s|/+|/|g;
&Apache::lonnet::allowuploaded('/adm/essayresponse',$file);
$file_list.='<li><span class="LC_nobreak"><a href="'.$file.'?rawmode=1" target="lonGRDs"><img src="'.
&Apache::loncommon::icon($file).'" alt="file icon" border="0" /> '.$file.
'</a></span></li>'."\n";
}
if ($file_list) {
$output.= &mt('Submitted Files').'<ul>'.$file_list.'</ul>';
}
if ($answer =~ /\S/) {
$output.='<p>'.&mt('Submitted text').
'<blockquote>'.&HTML::Entities::encode($answer, '"<>&').'</blockquote></p>';
}
return '<div class="LC_prior_essay">'.$output.'</div>';
}
sub file_submission {
my ($part,$id,$award,$uploadedflag,$totalsize,$deletions,$context,$info)=@_;
my $files;
my $jspart=$part;
$jspart=~s/\./_/g;
my ($symb,$crsid,$udom,$uname) = &Apache::lonnet::whichuser();
my %crsinfo = &Apache::lonnet::coursedescription($crsid);
my $cdom = $crsinfo{'domain'};
my $cnum = $crsinfo{'num'};
my (@portfiles,$uploadedurl,@submitted_portfiles,$submitted_upload,
@acceptable_portfiles,$acceptable_upload,@accepted_portfiles,
$accepted_upload,@savedportfiles,$stored_upload,@tolock,
%port_delete,$uploaded_delete);
if ($Apache::lonhomework::history{"resource.$part.$id.portfiles"} ||
$Apache::lonhomework::history{"resource.$part.$id.uploadedurl"}) {
if ($Apache::lonhomework::history{"resource.$part.$id.portfiles"}) {
my @possfiles = split(/,/,$Apache::lonhomework::history{"resource.$part.$id.portfiles"});
foreach my $file (@possfiles) {
my ($path,$name) = ($file =~ m{^(.*/)([^/]+)$});
my ($origname,$version,$ext) = &Apache::lonnet::file_name_version_ext($name);
unless ($version) {
push(@portfiles,$file);
}
}
}
$uploadedurl = $Apache::lonhomework::history{"resource.$part.$id.uploadedurl"};
if (ref($deletions) eq 'ARRAY') {
if (@{$deletions} > 0) {
foreach my $file (@{$deletions}) {
$file = &HTML::Entities::decode($file);
if (grep(/^\Q$file\E$/,@portfiles)) {
$port_delete{$file} = 1;
} elsif ($file =~ m{^/uploaded/\Q$udom\E/\Q$uname\E/essayresponse/\Q$cdom\E/\Q$cnum\E/}) {
$uploaded_delete = $file;
} elsif ($file =~ m{^/uploaded/\Q$udom\E/\Q$uname\E/essayresponse/[^/]+$}) {
$uploaded_delete = $file;
}
}
}
}
foreach my $current (@portfiles) {
unless ($port_delete{$current}) {
push(@savedportfiles,$current);
}
}
if ($uploaded_delete) {
if ($uploaded_delete eq $uploadedurl) {
$Apache::lonhomework::results{"resource.$part.$id.uploadedfile"} = "";
$Apache::lonhomework::results{"resource.$part.$id.uploadedurl"} = "";
} else {
undef($uploaded_delete);
}
}
}
if ($env{'form.HWPORT'.$jspart.'_'.$id} ne '') {
my $newfiles= $env{'form.HWPORT'.$jspart.'_'.$id};
$newfiles =~s/,$//;
if ($newfiles =~ /[^\s]/) {
foreach my $file (split(/\s*,\s*/,$newfiles)) {
if ($file =~ /[^\s]/) {
push(@submitted_portfiles,$file);
}
}
}
}
if ($env{'form.HWFILETOOBIG'.$part.'_'.$id} ne '') {
$$award = 'EXCESS_FILESIZE';
} elsif ($env{'form.HWFILE'.$jspart.'_'.$id.'.filename'} ne '') {
my $newfile = $env{'form.HWFILE'.$jspart.'_'.$id.'.filename'};
if ($newfile =~ /[^\s]/) {
$submitted_upload = $newfile;
}
}
if (@savedportfiles) {
foreach my $file (reverse(@savedportfiles)) {
unless(grep(/^\Q$file\E$/,@submitted_portfiles)) {
unshift(@submitted_portfiles,$file);
}
}
}
if (@submitted_portfiles || $submitted_upload) {
my $uploadedfiletypes=
&Apache::lonnet::EXT("resource.$part".'_'."$id.uploadedfiletypes");
if ($uploadedfiletypes ne '') {
$uploadedfiletypes=~s/[^\w\,]//g;
$uploadedfiletypes=','.$uploadedfiletypes.',';
if (@submitted_portfiles) {
foreach my $file (@submitted_portfiles) {
my ($extension)=($file=~/\.(\w+)$/);
if ($uploadedfiletypes=~/\,\s*\Q$extension\E\s*\,/i) {
push(@acceptable_portfiles,$file);
}
}
}
if ($submitted_upload) {
my ($upload_ext)=($submitted_upload=~/\.(\w+)$/);
if ($uploadedfiletypes=~/\,\s*\Q$upload_ext\E\s*\,/i) {
$acceptable_upload = $submitted_upload;
} else {
$$award='INVALID_FILETYPE';
&delete_form_items($jspart,$id);
}
}
} else {
@acceptable_portfiles = @submitted_portfiles;
$acceptable_upload = $submitted_upload;
}
}
if ((@acceptable_portfiles) || ($acceptable_upload ne '')) {
my $maxfilesize=&Apache::lonnet::EXT("resource.$part".'_'."$id.maxfilesize");
if (!$maxfilesize) {
$maxfilesize = 10.0; #FIXME This should become a domain configuration
}
my %dirlist;
if (@acceptable_portfiles) {
foreach my $file (@acceptable_portfiles) {
my ($path,$filename) = ($file =~ m{^(.*/)([^/]+)$});
my $fullpath = '/userfiles/portfolio'.$path;
if (!exists($dirlist{$fullpath})) {
my ($listref,$listerror) =
&Apache::lonnet::dirlist($fullpath,$udom,$uname,1);
if (ref($listref) eq 'ARRAY') {
$dirlist{$fullpath} = $listref;
}
}
if (ref($dirlist{$fullpath}) eq 'ARRAY') {
foreach my $dir_line (@{$dirlist{$fullpath}}) {
my ($fname,$dom,undef,$testdir,undef,undef,undef,undef,
$size,undef,$mtime,undef,undef,undef,$obs,undef) =
split(/\&/,$dir_line,16);
if ($filename eq $fname) {
my $mbsize = $size/(1024.0*1024.0);
if (ref($totalsize)) {
$$totalsize += $mbsize;
}
last;
}
}
}
if (ref($totalsize)) {
if ($$totalsize > $maxfilesize) {
$$award='EXCESS_FILESIZE';
&delete_form_items($jspart,$id);
} else {
push(@accepted_portfiles,$file);
}
} else {
push(@accepted_portfiles,$file);
}
}
}
if ($acceptable_upload ne '') {
if (ref($totalsize)) {
$$totalsize += $env{'form.HWFILESIZE'.$jspart.'_'.$id};
if ($$totalsize > $maxfilesize) {
$$award='EXCESS_FILESIZE';
delete($env{'form.HWFILE'.$jspart.'_'.$id});
} else {
$accepted_upload = $acceptable_upload;
}
} else {
$accepted_upload = $acceptable_upload;
}
}
}
if ($accepted_upload ne '') {
my ($path,$multiresp) =
&Apache::loncommon::get_turnedin_filepath($symb,$uname,$udom,
'submission');
if ($path eq '') {
$$award = 'INTERNAL_ERROR';
} else {
if ($multiresp) {
$path .= '/'.$jspart.'_'.$id;
}
my $prefix = 'portfolio';
my $formelement = 'HWFILE'.$jspart.'_'.$id;
my $fname = &Apache::lonnet::clean_filename($env{'form.'.$formelement.'.filename'});
my $url = '/uploaded/'.$udom.'/'.$uname.'/'.$prefix.$path.'/'.$fname;
my @stat = &Apache::lonnet::stat_file($url);
my $conflicts = 0;
if (@stat && $stat[0] ne 'no_such_dir') {
my $current_permissions =
&Apache::lonnet::get_portfile_permissions($udom,$uname);
if (ref($current_permissions) eq 'HASH') {
if (ref($current_permissions->{$path.'/'.$fname}) eq 'ARRAY') {
foreach my $record (@{$current_permissions->{$path.'/'.$fname}}) {
if (ref($record) eq 'ARRAY') {
next if (($record->[0] eq $symb) &&
($record->[1] eq $crsid));
$conflicts ++;
}
}
}
}
if ($conflicts) {
$$award = 'FILENAME_INUSE';
}
}
unless ($conflicts) {
my ($mode,%allfiles,%codebase);
my $result = &Apache::lonnet::userfileupload($formelement,'',
$prefix.$path,$mode,\%allfiles,\%codebase);
if ($result =~ m{^/uploaded/}) {
$stored_upload = $path.'/'.$fname;
unless (grep(/^\Q$stored_upload\E$/,@accepted_portfiles)) {
$Apache::lonhomework::results{"resource.$part.$id.portfiles"} = $stored_upload;
push(@tolock,$stored_upload);
}
} else {
$$award = 'INTERNAL_ERROR';
}
}
}
delete($env{'form.HWFILE'.$jspart.'_'.$id});
}
if (@accepted_portfiles) {
if ($Apache::lonhomework::results{"resource.$part.$id.portfiles"}) {
$Apache::lonhomework::results{"resource.$part.$id.portfiles"} .= ',';
}
$Apache::lonhomework::results{"resource.$part.$id.portfiles"}.=join(',',@accepted_portfiles);
push(@tolock,@accepted_portfiles);
}
if (!defined($Apache::lonhomework::results{"resource.$part.$id.portfiles"})) {
if (keys(%port_delete) > 0) {
$Apache::lonhomework::results{"resource.$part.$id.portfiles"} = "";
}
}
if (($Apache::lonhomework::history{"resource.$part.$id.portfiles"} ne
$Apache::lonhomework::results{"resource.$part.$id.portfiles"}) ||
($uploaded_delete)) {
if (ref($uploadedflag)) {
$$uploadedflag=1;
}
}
if ($context eq 'externalresponse') {
my @todelete = map { "/uploaded/$udom/$uname/portfolio".$_; } keys(%port_delete);
if (@tolock || @todelete) {
if (ref($info) eq 'HASH') {
if (($info->{'ip'}) && ($info->{'is_submit'})) {
my @adds;
if (@tolock) {
@adds = map { "/uploaded/$udom/$uname/portfolio".$_; } @tolock;
}
&Apache::lonnet::automated_portfile_access('ip',\@adds,\@todelete,$info);
}
}
}
}
&Apache::lonnet::unmark_as_readonly($udom,$uname,[$symb,$crsid]);
&Apache::lonnet::mark_as_readonly($udom,$uname,[@tolock],[$symb,$crsid]);
&Apache::lonnet::clear_selected_files($uname);
return;
}
sub delete_form_items {
my ($jspart,$id) = @_;
delete($env{'form.HWFILE'.$jspart.'_'.$id.'.filename'});
delete($env{'form.HWFILE'.$jspart.'_'.$id.'.mimetype'});
delete($env{'form.HWFILE'.$jspart.'_'.$id});
}
sub check_collaborators {
my ($ncol,$coll) = @_;
my %classlist=&Apache::lonnet::dump('classlist',
$env{'course.'.$env{'request.course.id'}.'.domain'},
$env{'course.'.$env{'request.course.id'}.'.num'});
my (@badcollaborators,$result);
my (@collaborators) = split(/[,;\s]+/,$coll);
foreach my $entry (@collaborators) {
my $collaborator;
if ($entry =~ /:/) {
$collaborator = $entry;
} else {
$collaborator = $entry.':'.$env{'user.domain'};
}
if ($collaborator !~ /^$match_username:$match_domain$/) {
if (!grep(/^\Q$entry\E$/,@badcollaborators)) {
push(@badcollaborators,$entry);
}
} elsif (!grep(/^\Q$collaborator\E$/i,keys(%classlist))) {
if (!grep(/^\Q$entry\E$/,@badcollaborators)) {
push(@badcollaborators,$entry);
}
}
}
my $numbad = scalar(@badcollaborators);
if ($numbad) {
$result = '<table border="0"><tr bgcolor="#ffbbbb"><td>';
if ($numbad == 1) {
$result .= &mt('The following user is invalid:');
} else {
$result .= &mt('The following [_1] users are invalid:',$numbad);
}
$result .= ' '.join(', ',@badcollaborators).'. '.&mt('Please correct.').
'</td></tr></table>';
}
my $toomany = scalar(@collaborators) - $ncol;
if ($toomany > 0) {
$result .= '<table border="0"><tr bgcolor="#ffbbbb"><td>'.
&mt('You have too many collaborators.').' '.
&mt('Please remove [quant,_1,collaborator].',$toomany).
'</td></tr></table>';
}
return $result;
}
1;
__END__
=pod
=head1 NAME
Apache::essayresponse
=head1 SYNOPSIS
Handler to evaluate essay (ungraded) style responses.
This is part of the LearningOnline Network with CAPA project
described at http://www.lon-capa.org.
=head1 SUBROUTINES
=over
=item start_essayresponse()
=item draft_row()
=item get_collab_row()
=item show_status_table()
=item end_essayresponse()
=item get_collaborators()
=item format_prior_response()
=item file_submission()
=item delete_form_items()
=item check_collaborators()
=back
=cut
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