--- loncom/homework/lonhomework.pm 2004/12/03 21:47:38 1.186 +++ loncom/homework/lonhomework.pm 2005/11/15 21:39:33 1.225 @@ -1,7 +1,7 @@ # The LearningOnline Network with CAPA # The LON-CAPA Homework handler # -# $Id: lonhomework.pm,v 1.186 2004/12/03 21:47:38 albertel Exp $ +# $Id: lonhomework.pm,v 1.225 2005/11/15 21:39:33 albertel Exp $ # # Copyright Michigan State University Board of Trustees # @@ -30,7 +30,7 @@ package Apache::lonhomework; use strict; use Apache::style(); use Apache::lonxml(); -use Apache::lonnet(); +use Apache::lonnet; use Apache::lonplot(); use Apache::inputtags(); use Apache::structuretags(); @@ -53,58 +53,81 @@ use HTML::Entities(); use Apache::loncommon(); use Apache::lonlocal; use Time::HiRes qw( gettimeofday tv_interval ); +use Apache::lonnet(); + +# FIXME - improve commenting + BEGIN { &Apache::lonxml::register_insert(); } + +# +# Decides what targets to render for. +# Implicit inputs: +# Various session environment variables: +# request.state - published - is a /res/ resource +# uploaded - is a /uploaded/ resource +# contruct - is a /priv/ resource +# form.grade_target - a form parameter requesting a specific target sub get_target { - if (($ENV{'request.state'} eq "published") || - ($ENV{'request.state'} eq "uploaded")) { - if ( defined($ENV{'form.grade_target'} ) - && ($ENV{'form.grade_target'} eq 'tex')) { - return ($ENV{'form.grade_target'}); - } elsif ( defined($ENV{'form.grade_target'} ) + &Apache::lonxml::debug("request.state = $env{'request.state'}"); + if( defined($env{'form.grade_target'})) { + &Apache::lonxml::debug("form.grade_target= $env{'form.grade_target'}"); + } else { + &Apache::lonxml::debug("form.grade_target "); + } + if (($env{'request.state'} eq "published") || + ($env{'request.state'} eq "uploaded")) { + if ( defined($env{'form.grade_target'} ) + && ($env{'form.grade_target'} eq 'tex')) { + return ($env{'form.grade_target'}); + } elsif ( defined($env{'form.grade_target'} ) && ($Apache::lonhomework::viewgrades eq 'F' )) { - return ($ENV{'form.grade_target'}); + return ($env{'form.grade_target'}); } - - if ( defined($ENV{'form.submitted'}) && - ( !defined($ENV{'form.resetdata'})) && - ( !defined($ENV{'form.newrandomization'}))) { + if ($env{'form.webgrade'} && + $Apache::lonhomework::modifygrades eq 'F') { + return ('grade','webgrade'); + } + if ( defined($env{'form.submitted'}) && + ( !defined($env{'form.resetdata'})) && + ( !defined($env{'form.newrandomization'}))) { return ('grade', 'web'); } else { return ('web'); } - } elsif ($ENV{'request.state'} eq "construct") { - if ( defined($ENV{'form.grade_target'}) ) { - return ($ENV{'form.grade_target'}); + } elsif ($env{'request.state'} eq "construct") { + if ( defined($env{'form.grade_target'}) ) { + return ($env{'form.grade_target'}); } - if ( defined($ENV{'form.preview'})) { - if ( defined($ENV{'form.submitted'})) { + if ( defined($env{'form.preview'})) { + if ( defined($env{'form.submitted'})) { return ('grade', 'web'); } else { return ('web'); } } else { - if ( $ENV{'form.problemmode'} eq &mt('View') || - $ENV{'form.problemmode'} eq &mt('Discard Edits and View')) { - if ( defined($ENV{'form.submitted'}) && - (!defined($ENV{'form.resetdata'})) && - (!defined($ENV{'form.newrandomization'}))) { + if ( $env{'form.problemmode'} eq &mt('View') || + $env{'form.problemmode'} eq &mt('Discard Edits and View')) { + if ( defined($env{'form.submitted'}) && + (!defined($env{'form.resetdata'})) && + (!defined($env{'form.newrandomization'}))) { return ('grade', 'web','answer'); } else { return ('web','answer'); } - } elsif ( $ENV{'form.problemmode'} eq &mt('Edit') ) { - if ( $ENV{'form.submitted'} eq 'edit' ) { - if ( $ENV{'form.submit'} eq &mt('Submit Changes and View') ) { + } elsif ( $env{'form.problemmode'} eq &mt('Edit') || + $env{'form.problemmode'} eq 'Edit') { + if ( $env{'form.submitted'} eq 'edit' ) { + if ( $env{'form.submit'} eq &mt('Submit Changes and View') ) { return ('modified','web','answer'); } else { - return ('modified','edit'); + return ('modified','no_output_web','edit'); } } else { - return ('edit'); + return ('no_output_web','edit'); } } else { return ('web'); @@ -123,7 +146,7 @@ sub setup_vars { sub send_header { my ($request)= @_; $request->print(&Apache::lontexconvert::header()); -# $request->print('
'); +# $request->print(''); } sub createmenu { @@ -142,11 +165,28 @@ sub send_footer { $request->print(&Apache::lontexconvert::footer()); } -$Apache::lonxml::browse=''; +sub proctor_checked_in { + my ($slot_name,$slot)=@_; + my @allowed=split(",",$slot->{'proctor'}); + my $version=$Apache::lonhomework::history{'resource.version'}; + foreach my $possible (@allowed) { + if ($Apache::lonhomework::history{"resource.$version.checkedin"} eq + $possible && + $Apache::lonhomework::history{"resource.$version.checkedin.slot"} + eq $slot_name) { + return 1; + } + } + return 0; +} +$Apache::lonxml::browse=''; sub check_ip_acc { my ($acc)=@_; - if (!defined($acc) || $acc =~ /^\s*$/) { return 1; } + &Apache::lonxml::debug("acc is $acc"); + if (!defined($acc) || $acc =~ /^\s*$/ || $acc =~/^\s*no\s*$/i) { + return 1; + } my $allowed=0; my $ip=$ENV{'REMOTE_ADDR'}; my $name; @@ -189,6 +229,70 @@ sub check_ip_acc { } return $allowed; } + +sub check_task_access { + # does it pass normal muster + # yes we really do want the default args passing + my ($status,$datemsg)=&check_access; + if ($status eq 'SHOW_ANSWER' || + $status eq 'CLOSED' || + $status eq 'INVALID_ACCESS' || + $status eq 'UNAVAILABLE') { + return ($status,$datemsg); + } + if ($env{'request.state'} eq "construct") { + return ($status,$datemsg); + } + my $version=$Apache::lonhomework::history{'resource.version'}; + if ($Apache::lonhomework::history{"resource.$version.checkedin"} && + $Apache::lonhomework::history{"resource.$version.status"} eq 'pass') { + return ('SHOW_ANSWER'); + } + my ($id)=@_; + my @slots= + (split(':',&Apache::lonnet::EXT("resource.$id.availablestudent")), + split(':',&Apache::lonnet::EXT("resource.$id.available"))); + +# if (!@slots) { +# return ($status,$datemsg); +# } + my $slotstatus='NOT_IN_A_SLOT'; + my ($returned_slot,$slot_name); + foreach my $slot (@slots) { + &Apache::lonxml::debug("getting $slot"); + my %slot=&Apache::lonnet::get_slot($slot); + &Apache::lonhomework::showhash(%slot); + if ($slot{'starttime'} < time && + $slot{'endtime'} > time && + &check_ip_acc($slot{'ip'})) { + &Apache::lonxml::debug("$slot is good"); + $slotstatus='NEEDS_CHECKIN'; + $returned_slot=\%slot; + $slot_name=$slot; + last; + } + } + if ($slotstatus eq 'NEEDS_CHECKIN' && + &proctor_checked_in($slot_name,$returned_slot)) { + &Apache::lonxml::debug("protoctor checked in"); + $slotstatus='CAN_ANSWER'; + } + if ( $slotstatus eq 'NOT_IN_A_SLOT' && + $Apache::lonhomework::history{"resource.$version.checkedin"}) { + if ($Apache::lonhomework::history{"resource.$version.status"} eq 'fail') { + return ('SHOW_ANSWER'); + } else { + return ('WAITING_FOR_GRADE'); + } + } + if ( $status eq 'CANNOT_ANSWER' && + ($slotstatus ne 'NEEDS_CHECKIN' && $slotstatus ne 'NOT_IN_A_SLOT')) { + return ($status,$datemsg); + } + + return ($slotstatus,$datemsg,$slot_name,$returned_slot); +} + # JB, 9/24/2002: Any changes in this function may require a change # in lonnavmaps::resource::getDateStatus. sub check_access { @@ -201,16 +305,16 @@ sub check_access { my $type; my $passed; - if ($ENV{'request.state'} eq "construct") { - if ($ENV{'form.problemstate'}) { - if ($ENV{'form.problemstate'} =~ /^CANNOT_ANSWER/) { - if ( ! ($ENV{'form.problemstate'} eq 'CANNOT_ANSWER_correct' && + if ($env{'request.state'} eq "construct") { + if ($env{'form.problemstate'}) { + if ($env{'form.problemstate'} =~ /^CANNOT_ANSWER/) { + if ( ! ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct' && lc($Apache::lonhomework::problemstatus) eq 'no')) { return ('CANNOT_ANSWER', &mt('is in this state due to author settings.')); } } else { - return ($ENV{'form.problemstate'}, + return ($env{'form.problemstate'}, &mt('is in this state due to author settings.')); } } @@ -223,7 +327,10 @@ sub check_access { &Apache::lonxml::debug("checking for part :$id:"); &Apache::lonxml::debug("time:".time); - if ($ENV{'request.state'} ne "construct") { + my ($symb)=&Apache::lonxml::whichuser(); + &Apache::lonxml::debug("symb:".$symb); + #if ($env{'request.state'} ne "construct" && $symb ne '') { + if ($env{'request.state'} ne "construct") { my $allowed=&check_ip_acc(&Apache::lonnet::EXT("resource.$id.acc")); if (!$allowed && ($Apache::lonhomework::browse ne 'F')) { $status='INVALID_ACCESS'; @@ -275,13 +382,14 @@ sub check_access { $datemsg = &mt("was due on")." $lastdate".&mt(", and answers will be available on")." $date"; } } - if ($status eq 'CAN_ANSWER') { + if ($status eq 'CAN_ANSWER' || + (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED'))) { #check #tries, and if correct. my $tries = $Apache::lonhomework::history{"resource.$id.tries"}; my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries"); if ( $tries eq '' ) { $tries = '0'; } if ( $maxtries eq '' && - $ENV{'request.state'} ne 'construct') { $maxtries = '2'; } + $env{'request.state'} ne 'construct') { $maxtries = '2'; } if ($maxtries && $tries >= $maxtries) { $status = 'CANNOT_ANSWER'; } # if (correct and show prob status) or excused then CANNOT_ANSWER if(($Apache::lonhomework::history{"resource.$id.solved"}=~/^correct/ @@ -300,7 +408,7 @@ sub check_access { &Apache::lonxml::debug("looking for accesstime $first_access"); if (!$first_access) { $status='NOT_YET_VIEWED'; - $datemsg=' '.$interval.' seconds'; + $datemsg=&seconds_to_human_length($interval); } else { my $newdate=localtime($first_access+$interval); if (time > ($first_access+$interval)) { @@ -328,6 +436,25 @@ sub check_access { return ($status,$datemsg); } +sub seconds_to_human_length { + my ($length)=@_; + + my $seconds=$length%60; $length=int($length/60); + my $minutes=$length%60; $length=int($length/60); + my $hours=$length%24; $length=int($length/24); + my $days=$length; + + my $timestr; + if ($days > 0) { $timestr.=&mt('[quant,_1,day]',$days); } + if ($hours > 0) { $timestr.=($timestr?", ":""). + &mt('[quant,_1,hour]',$hours); } + if ($minutes > 0) { $timestr.=($timestr?", ":""). + &mt('[quant,_1,minute]',$minutes); } + if ($seconds > 0) { $timestr.=($timestr?", ":""). + &mt('[quant,_1,second]',$seconds); } + return $timestr; +} + sub showhash { my (%hash) = @_; &showhashsubset(\%hash,'.'); @@ -338,10 +465,11 @@ sub showarray { my ($array)=@_; my $string="("; foreach my $elm (@{ $array }) { - if (ref($elm)) { - if ($elm =~ /ARRAY/ ) { - $string.=&showarray($elm); - } + if (ref($elm) eq 'ARRAY') { + $string.=&showarray($elm); + } elsif (ref($elm) eq 'HASH') { + $string.= "HASH --- \n
"; + $string.= &showhashsubset($elm,'.'); } else { $string.="$elm," } @@ -355,20 +483,15 @@ sub showhashsubset { my ($hash,$keyre) = @_; my $resultkey; foreach $resultkey (sort keys %$hash) { - if ($resultkey =~ /$keyre/) { - if (ref($$hash{$resultkey})) { - if ($$hash{$resultkey} =~ /ARRAY/ ) { - &Apache::lonxml::debug("$resultkey ---- ". - &showarray($$hash{$resultkey})); - } elsif ($$hash{$resultkey} =~ /HASH/ ) { - &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}"); - &showhashsubset($$hash{$resultkey},'.'); - } else { - &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}"); - } - } else { - &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}"); - } + if ($resultkey !~ /$keyre/) { next; } + if (ref($$hash{$resultkey}) eq 'ARRAY' ) { + &Apache::lonxml::debug("$resultkey ---- ". + &showarray($$hash{$resultkey})); + } elsif (ref($$hash{$resultkey}) eq 'HASH' ) { + &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}"); + &showhashsubset($$hash{$resultkey},'.'); + } else { + &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}"); } } &Apache::lonxml::debug("\n
restored values^
\n"); @@ -376,34 +499,41 @@ sub showhashsubset { } sub setuppermissions { - $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$ENV{'request.filename'}); - my $viewgrades = &Apache::lonnet::allowed('vgr',$ENV{'request.course.id'}); + $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$env{'request.filename'}); + my $viewgrades = &Apache::lonnet::allowed('vgr',$env{'request.course.id'}); if (! $viewgrades && - exists($ENV{'request.course.sec'}) && - $ENV{'request.course.sec'} !~ /^\s*$/) { - $viewgrades = &Apache::lonnet::allowed('vgr',$ENV{'request.course.id'}. - '/'.$ENV{'request.course.sec'}); + exists($env{'request.course.sec'}) && + $env{'request.course.sec'} !~ /^\s*$/) { + $viewgrades = &Apache::lonnet::allowed('vgr',$env{'request.course.id'}. + '/'.$env{'request.course.sec'}); } - $Apache::lonhomework::viewgrades = $viewgrades; + $Apache::lonhomework::viewgrades = $viewgrades; # File global variable...dirt. if ($Apache::lonhomework::browse eq 'F' && - $ENV{'form.devalidatecourseresdata'} eq 'on') { + $env{'form.devalidatecourseresdata'} eq 'on') { my (undef,$courseid) = &Apache::lonxml::whichuser(); - &Apache::lonnet::devalidatecourseresdata($ENV{"course.$courseid.num"}, - $ENV{"course.$courseid.domain"}); + &Apache::lonnet::devalidatecourseresdata($env{"course.$courseid.num"}, + $env{"course.$courseid.domain"}); } - return '' + my $modifygrades = &Apache::lonnet::allowed('mgr',$env{'request.course.id'}); + if (! $modifygrades && + exists($env{'request.course.sec'}) && + $env{'request.course.sec'} !~ /^\s*$/) { + $modifygrades = + &Apache::lonnet::allowed('mgr',$env{'request.course.id'}. + '/'.$env{'request.course.sec'}); + } + $Apache::lonhomework::modifygrades = $modifygrades; + return ''; } sub setupheader { my $request=$_[0]; - if ($ENV{'browser.mathml'}) { - &Apache::loncommon::content_type($request,'text/xml'); - } else { - &Apache::loncommon::content_type($request,'text/html'); - } + &Apache::loncommon::content_type($request,'text/html'); if (!$Apache::lonxml::debug && ($ENV{'REQUEST_METHOD'} eq 'GET')) { &Apache::loncommon::no_cache($request); } +# $request->set_last_modified(&Apache::lonnet::metadata($request->uri, +# 'lastrevisiondate')); $request->send_http_header; return OK if $request->header_only; return '' @@ -418,7 +548,7 @@ sub handle_save_or_undo { &Apache::lonnet::correct_line_ends($result); - if ($ENV{'form.Undo'} eq &mt('undo')) { + if ($env{'form.Undo'} eq &mt('undo')) { my $error=0; if (!copy($file,$filetmp)) { $error=1; } if ((!$error) && (!copy($filebak,$file))) { $error=1; } @@ -455,15 +585,14 @@ sub handle_save_or_undo { sub analyze_header { my ($request) = @_; - my $bodytag=''; - if ($ENV{'environment.remote'} eq 'off') { - $bodytag=&Apache::loncommon::bodytag(); - } - my $result.=' + my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef, + ($env{'environment.remote'} ne 'off')); + my $html=&Apache::lonxml::xmlbegin(); + my $result.=$html.' '.&mt("Analyzing a problem").' '.$bodytag.&Apache::lonxml::message_location().' '. + &HTML::Entities::encode($env{'request.uri'},'<>&"').'">'. &Apache::structuretags::remember_problem_state().' @@ -488,21 +617,23 @@ sub analyze { &Apache::lonxml::debug("Analyze"); my $result; my %overall; + my %seedexample; my %allparts; - my $rndseed=$ENV{'form.rndseed'}; + my $rndseed=$env{'form.rndseed'}; &analyze_header($request); my %prog_state= &Apache::lonhtmlcommon::Create_PrgWin($request,&mt('Analyze Progress'), &mt('Getting Problem Variants'), - $ENV{'form.numtoanalyze'}, + $env{'form.numtoanalyze'}, 'inline',undef); - for(my $i=1;$i<$ENV{'form.numtoanalyze'}+1;$i++) { + for(my $i=1;$i<$env{'form.numtoanalyze'}+1;$i++) { &Apache::lonhtmlcommon::Increment_PrgWin($request,\%prog_state, &mt('last problem')); if (&Apache::loncommon::connection_aborted($request)) { return; } + my $thisseed=$i+$rndseed; my $subresult=&Apache::lonnet::ssi($request->uri, ('grade_target' => 'analyze'), - ('rndseed' => $i+$rndseed)); + ('rndseed' => $thisseed)); (my $garbage,$subresult)=split(/_HASH_REF__/,$subresult,2); my %analyze=&Apache::lonnet::str2hash($subresult); my @parts; @@ -514,8 +645,13 @@ sub analyze { if ($analyze{$part.'.type'} eq 'numericalresponse' || $analyze{$part.'.type'} eq 'stringresponse' || $analyze{$part.'.type'} eq 'formularesponse' ) { + my $concatanswer=join("\0",@{ $analyze{$part.'.answer'} }); + if (($concatanswer eq '') || ($concatanswer=~/^\@/)) { + @{$analyze{$part.'.answer'}}=(''.&mt('Error').''); + } push( @{ $overall{$part.'.answer'} }, [@{ $analyze{$part.'.answer'} }]); + $seedexample{join("\0",@{ $analyze{$part.'.answer'}})}=$thisseed; } } } @@ -525,17 +661,18 @@ sub analyze { foreach my $part (sort(keys(%allparts))) { if (defined(@{ $overall{$part.'.answer'} })) { my $num_cols=scalar(@{ $overall{$part.'.answer'}->[0] }); - $request->print(''); + $request->print('
'.&mt('Part').' '.$part.'
'); my %frequency; foreach my $answer (sort {$a->[0] <=> $b->[0]} (@{ $overall{$part.'.answer'} })) { $frequency{join("\0",@{ $answer })}++; } - $request->print(''); + $request->print(''); foreach my $answer (sort {(split("\0",$a))[0] <=> (split("\0",$b))[0]} (keys(%frequency))) { - $request->print(''); + $request->print(''); } $request->print('
'.&mt('Part').' '.$part.'
'.&mt('Answer').''.&mt('Frequency').'
'.&mt('Answer').''.&mt('Frequency').'
(' + .&mt('click for example').')
'. - join('',split("\0",$answer)). - '('.$frequency{$answer}. - ')
'. + join('',split("\0",$answer)). + ''.$frequency{$answer}. + '
'); } else { @@ -544,7 +681,7 @@ sub analyze { } } if (scalar(keys(%allparts)) == 0 ) { - $request->print('

'.&mt('Found no analyzable respones in this problem, currently only Numerical, Formula and String response styles are supported.').'

'); + $request->print('

'.&mt('Found no analyzable responses in this problem, currently only Numerical, Formula and String response styles are supported.').'

'); } &Apache::lonhtmlcommon::Close_PrgWin($request,\%prog_state); &analyze_footer($request); @@ -561,15 +698,15 @@ sub editxmlmode { " $file"); $problem=''; } - if (defined($ENV{'form.editxmltext'}) || defined($ENV{'form.Undo'})) { + if (defined($env{'form.editxmltext'}) || defined($env{'form.Undo'})) { my $error=&handle_save_or_undo($request,\$problem, - \$ENV{'form.editxmltext'}); + \$env{'form.editxmltext'}); if (!$error) { $problem=&Apache::lonnet::getfile($file); } } - &Apache::lonhomework::showhashsubset(\%ENV,'^form'); - if ( $ENV{'form.submit'} eq &mt('Submit Changes and View') ) { - &Apache::lonhomework::showhashsubset(\%ENV,'^form'); - $ENV{'form.problemmode'}='View'; + &Apache::lonhomework::showhashsubset(\%env,'^form'); + if ( $env{'form.submit'} eq &mt('Submit Changes and View') ) { + &Apache::lonhomework::showhashsubset(\%env,'^form'); + $env{'form.problemmode'}='View'; &renderpage($request,$file); } else { my ($rows,$cols) = &Apache::edit::textarea_sizes(\$problem); @@ -582,13 +719,14 @@ sub editxmlmode { if ($cols > 80) { $cols = 80; } if ($cols < 70) { $cols = 70; } if ($rows < 20) { $rows = 20; } - my $bodytag=''; - if ($ENV{'environment.remote'} eq 'off') { - $bodytag=&Apache::loncommon::bodytag(); - } - $result.=''.$bodytag.&Apache::lonxml::message_location().' + my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef, + ($env{'environment.remote'} ne 'off')); + my $html=&Apache::lonxml::xmlbegin(); + $result.=$html.$bodytag. + &renderpage($request,$file,['no_output_web'],1). + &Apache::lonxml::message_location().' '. + &HTML::Entities::encode($env{'request.uri'},'<>&"').'">'. &Apache::structuretags::remember_problem_state().' @@ -599,7 +737,7 @@ sub editxmlmode {
' . $xml_help . ' -
'; &Apache::lonxml::add_messages(\$result); @@ -608,11 +746,14 @@ sub editxmlmode { return ''; } +# +# Render the page in whatever target desired. +# sub renderpage { - my ($request,$file) = @_; + my ($request,$file,$targets,$return_string) = @_; - my (@targets) = &get_target(); - &Apache::lonhomework::showhashsubset(\%ENV,'form.'); + my @targets = @{$targets || [&get_target()]}; + &Apache::lonhomework::showhashsubset(\%env,'form.'); &Apache::lonxml::debug("Running targets ".join(':',@targets)); my $overall_result; foreach my $target (@targets) { @@ -624,22 +765,28 @@ sub renderpage { # $request->print(" You most likely shouldn't see me."); #} #my $t0 = [&gettimeofday()]; + my $output=1; + if ($target eq 'no_output_web') { + $target = 'web'; $output=0; + } my $problem=&Apache::lonnet::getfile($file); + my $result; if ($problem eq -1) { - &Apache::lonxml::error(" ".&mt('Unable to find')." $file"); + my $filename=(split('/',$file))[-1]; + $result.=" ".&mt('Unable to find')." $filename"; $problem=''; } my %mystyle; - my $result = ''; if ($target eq 'analyze') { %Apache::lonhomework::analyze=(); } if ($target eq 'answer') { &showhash(%Apache::lonhomework::history); } - if ($target eq 'web') {&Apache::lonhomework::showhashsubset(\%ENV,'^form');} + if ($target eq 'web') {&Apache::lonhomework::showhashsubset(\%env,'^form');} &Apache::lonxml::debug("Should be parsing now"); - $result = &Apache::lonxml::xmlparse($request, $target, $problem, - &setup_vars($target),%mystyle); + $result .= &Apache::lonxml::xmlparse($request, $target, $problem, + &setup_vars($target),%mystyle); undef($Apache::lonhomework::parsing_a_problem); + if (!$output) { $result = ''; } #$request->print("Result follows:"); if ($target eq 'modified') { &handle_save_or_undo($request,\$problem,\$result); @@ -660,9 +807,13 @@ sub renderpage { #$request->print(":Result ends"); #my $td=&tv_interval($t0); } - &Apache::lonxml::add_messages(\$overall_result); - $request->print($overall_result); - $request->rflush(); + if (!$return_string) { + &Apache::lonxml::add_messages(\$overall_result); + $request->print($overall_result); + $request->rflush(); + } else { + return $overall_result; + } } # with no arg it returns a HTML