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Diff for /loncom/homework/lonhomework.pm between versions 1.1 and 1.32

version 1.1, 2000/07/25 17:45:40 version 1.32, 2001/01/11 15:25:46
Line 1 Line 1
 # The LON-CAPA Homework handler  # The LON-CAPA Homework handler
 # Guy Albertelli  # Guy Albertelli
   # 11/30 Gerd Kortemeyer
   # 6/1 Gerd Kortemeyer
   
 package Apache::lonhomework;  package Apache::lonhomework;
 use strict;  use strict;
 use Apache::style;  use Apache::style;
 use Apache::lonxml;  use Apache::lonxml;
   use Apache::lonnet;
   use Apache::inputtags;
   use Apache::structuretags;
   use Apache::response;
   use Apache::hint;
   use Apache::outputtags;
   use Apache::Constants qw(:common);
   
   sub get_target {
     if ( $ENV{'request.state'} eq "published") {
       if ( defined $ENV{'form.submit'}) {
         return ('grade', 'web');
       } else {
         return ('web');
       }
     } elsif ($ENV{'request.state'} eq "construct") {
       if ( defined $ENV{'form.preview'}) {
         if ( defined $ENV{'form.submit'}) {
    return ('grade', 'web');
         } else {
    return ('web');
         }
       } else {
         #return ('edit');
         #edit is currently broken
         return ('web');
       }
     }
     return ();
   }
   
   sub setup_vars {
     my ($target) = @_;
     return ';'
   #  return ';$external::target='.$target.';';
   }
   
   sub send_header {
     my ($request)= @_;
     $request->print(&Apache::lontexconvert::header());
     $ENV{'request.uri'}=$request->uri;
   #  $request->print('<form name='.$ENV{'form.request.prefix'}.'lonhomework method="POST" action="'.$request->uri.'">');
   }
   
   sub send_footer {
     my ($request)= @_;
   #  $request->print('</form>');
     $request->print(&Apache::lontexconvert::footer());
   }
   
   #@Apache::lonhomework::date_status=();
   #@Apache::lonhomework::date_msg=();
   sub check_date {
     my ($id) = @_;
     my $date ='';
     my $status = '';
     my $datemsg = '';
     my $lastdate = '';
     my $temp;
     my $type;
     my $passed;
     &Apache::lonxml::debug("checking for part :$id:");
     foreach $temp ("opendate","duedate","answerdate") {
       $lastdate = $date;
       $date = &Apache::lonnet::EXT("resource.$id.$temp");
       &Apache::lonxml::debug("found :$date: for :$temp:");
       if ($date eq '') {
         $date = "an unknown date"; $passed = 0;
       } elsif ($date eq 'con_lost') {
         $date = "an indeterminate date"; $passed = 0;
       } else {
         if (time < $date) { $passed = 0; } else { $passed = 1; }
         $date = localtime $date;
       }
       if (!$passed) { $type=$temp; last; }
     }
     &Apache::lonxml::debug("have :$type:$passed:");
     if ($passed) {
       $status='SHOW_ANSWER';
       $datemsg=$date;
     } elsif ($type eq 'opendate') {
       $status='CLOSED';
       $datemsg = "will open on $date";
     } elsif ($type eq 'duedate') {
       $status='CAN_ANSWER';
       $datemsg = "is due at $date";
     } elsif ($type eq 'answerdate') {
       $status='CLOSED';
       $datemsg = "was due on $lastdate, and answers will be available on $date";
     }
     if ($status eq 'CAN_ANSWER') {
       #check #tries
       my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
       my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
       if ( $tries eq '' ) { $tries = '0'; }
       if ( $maxtries eq '' ) { $maxtries = '2'; } 
       if ($tries >= $maxtries) { $status = 'CANNOT_ANSWER'; } 
     }
     &Apache::lonxml::debug("sending back :$status:$datemsg:");
     if ($ENV{'request.state'} eq "construct") {
       &Apache::lonxml::debug("in construction ignoring dates");
       $status='CAN_ANSWER';
       $datemsg='is in under construction';
     }
     return ($status,$datemsg);
   }
   
 sub handler {  sub handler {
   my $request=shift;    my $request=$_[0];
   
     if ( $ENV{'user.name'} eq 'albertel' ) { $Apache::lonxml::debug=1; }
     
     my (@targets) = &get_target();
   
   my @parsecontents;    if ($ENV{'browser.mathml'}) {
   {      $request->content_type('text/xml');
     my $fh=Apache::File->new($request->filename);    } else {
     @parsecontents=<$fh>;      $request->content_type('text/html');
   }    }
     $request->send_http_header;
     return OK if $request->header_only;
       
   my $parsestring=join('',@parsecontents);    &Apache::lonhomework::send_header($request);
       
   $request->content_type('text/html');    #check if allowed to see
   $request->send_http_header;    
   $request->print('<html>    foreach my $target (@targets) {
 <form method="post" action="'.$request->uri.'"<input type="hidden" name="TARGET" value="edit"><input type="submit" value="Submit">');      my $file=&Apache::lonnet::filelocation("",$request->uri);
       my $problem=&Apache::lonnet::getfile($file);
       if ($problem == -1) {
         &Apache::lonxml::error("<b> Unable to find <i>$file</i></b>");
         $problem='';
       }
       
       my %mystyle;
       my $result = '';
       &Apache::inputtags::initialize_inputtags;
       %Apache::lonhomework::results=();
       %Apache::lonhomework::history=&Apache::lonnet::restore;
       #ignore error conditions
       my ($temp)=keys %Apache::lonhomework::history ;
       if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); } 
       if ($target eq 'web' && &Apache::lonnet::symbread() eq '') {
         $request->print("Vieiwing this problem as not a student, submissions will be ignored.");
       }
       if ($target eq 'grade') {
         my $resultkey;
         foreach $resultkey (sort keys %Apache::lonhomework::history) {
    &Apache::lonxml::debug("$resultkey ---- $Apache::lonhomework::history{$resultkey}");
         }
         &Apache::lonxml::debug("\n<br>restored values^</br>\n");
       }
       my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
       if ($default == -1) {
         &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
         $default='';
       }
       $result = &Apache::lonxml::xmlparse($target, $problem,
    $default.&setup_vars($target),%mystyle);
   
       #$request->print("Result follows:");
       $request->print($result);
       #$request->print(":Result ends");
       if ($target eq 'grade') {
   
         my $resultkey;
         foreach $resultkey (sort keys %Apache::lonhomework::results) {
    &Apache::lonxml::debug("$resultkey ---- $Apache::lonhomework::results{$resultkey}");
         }
         &Apache::lonxml::debug("\n<br>storing values^</br>\n");
       }
       
       my ($temp) = keys %Apache::lonhomework::results;
       if ( $temp ne '' ) {
         &Apache::lonxml::debug("Store return message:".&Apache::lonnet::cstore(%Apache::lonhomework::results));
       }
     }
     &Apache::lonhomework::send_footer($request);
     
     return OK;
   
 }  }
   
 1;  1;
Removed from v.1.1  
changed lines
  Added in v.1.32

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