--- loncom/homework/essayresponse.pm 2001/04/04 19:17:50 1.1 +++ loncom/homework/essayresponse.pm 2019/02/19 14:24:01 1.126 @@ -1,30 +1,680 @@ # The LearningOnline Network with CAPA # essay (ungraded) style responses -# 4/3 Guy +# +# $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); + -sub BEGIN { - &Apache::lonxml::register('Apache::essayresponse',('essayresponse')); +BEGIN { + &Apache::lonxml::register('Apache::essayresponse',('essayresponse')); } sub start_essayresponse { - my ($target,$token,$parstack,$parser,$safeeval,$style)=@_; - my $id = &Apache::response::start_response($parstack,$safeeval); - return ''; + my ($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 = ''; + } 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) { + $result = + '
'.$hiddendraft. + &Apache::lonhtmlcommon::start_pick_box(). + $result. + &Apache::lonhtmlcommon::end_pick_box().'
'; + } 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 .= '
'.&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). + '
'. + ''. + &Apache::lonhtmlcommon::row_closure($closure); +} + +sub get_collab_row { + my ($part,$id,$coll,$ncol,$closure) = @_; + my $output = &Apache::lonhtmlcommon::row_title(&mt('Collaborators')). + '
'; + $output .= &check_collaborators($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) { + $output = ''.&mt('Collaborated with [_1]',$coll).''; + } + my $current_files_display = &Apache::inputtags::current_file_submissions($part,$id); + if ($current_files_display) { + $output .= ''.&mt('Submitted files:').'
'. + $current_files_display.''; + } + if ($output ne '') { + return ''.$output. + '
'; + } + return; } sub end_essayresponse { - my ($target,$token,$parstack,$parser,$safeeval,$style)=@_; - if ( $target eq 'grade' ) { - if ( defined $ENV{'form.submitted'}) { - my $id = $Apache::inputtags::response['-1']; - $Apache::lonhomework::results{"resource.$Apache::inputtags::part.$id.submission"}=$response; - $Apache::lonhomework::results{"resource.$Apache::inputtags::part.$id.awarddetail"}="SUBMITTED"; - + my ($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 ($target eq 'web') { + &Apache::response::setup_prior_tries_hash(\&format_prior_response, + ['portfiles', + 'uploadedurl']); } - } - &Apache::response::end_response; - return ''; + if ($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); + $file_list.='
  • file icon '.$file. + '
    • '."\n"; + } + if ($file_list) { + $output.= &mt('Submitted Files').''; + } + if ($answer =~ /\S/) { + $output.='

    '.&mt('Submitted text'). + '

    '.&HTML::Entities::encode($answer, '"<>&').'

    '; + } + + return '
    '.$output.'
    '; } + +sub file_submission { + my ($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) { + $result = '
    '; + if ($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.'). + '
    '; + } + my $toomany = scalar(@collaborators) - $ncol; + if ($toomany > 0) { + $result .= '
    '. + &mt('You have too many collaborators.').' '. + &mt('Please remove [quant,_1,collaborator].',$toomany). + '
    '; + } + 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