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Diff for /loncom/homework/lonhomework.pm between versions 1.9 and 1.25

version 1.9, 2000/09/14 20:55:42 version 1.25, 2001/01/06 15:32:22
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;
Line 9  use Apache::lonnet; Line 11  use Apache::lonnet;
 use Apache::inputtags;  use Apache::inputtags;
 use Apache::structuretags;  use Apache::structuretags;
 use Apache::response;  use Apache::response;
   use Apache::hint;
 sub handler {  use Apache::Constants(:common);
   my $request=shift;  
   
   my $target=&get_target();  
   $request->content_type('text/html');  
   $request->send_http_header;  
   &Apache::lonhomework::send_header($request);  
   my $file = "/home/httpd/html".$request->uri;  
   my %mystyle;  
   my $result = '';  
   &Apache::inputtags::initialize_inputtags;  
   $result = Apache::lonxml::xmlparse($target, &getfile($file),  
  &getfile('/home/httpd/html/res/103/albertel/default_homework').&setup_vars($target),%mystyle);  
   #$request->print("Result follows:");  
   $request->print($result);  
   #$request->print(":Result ends");  
   &Apache::lonhomework::send_footer($request);  
 }  
   
 sub get_target {  sub get_target {
   return "web";    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');
       }
     }
     return ();
 }  }
   
 sub setup_vars {  sub setup_vars {
   my ($target) = @_;    my ($target) = @_;
   return ';$external::target='.$target.';';    return ';'
   #  return ';$external::target='.$target.';';
 }  }
   
 sub send_header {  sub send_header {
   my ($request)= @_;    my ($request)= @_;
   $request->print('<html>');    $request->print(&Apache::lontexconvert::header());
   $request->print('<form method="POST" action="'.$request->uri.'">');    $ENV{'request.uri'}=$request->uri;
   #  $request->print('<form name='.$ENV{'form.request.prefix'}.'lonhomework method="POST" action="'.$request->uri.'">');
 }  }
   
 sub send_footer {  sub send_footer {
   my ($request)= @_;    my ($request)= @_;
   $request->print('</form>');  #  $request->print('</form>');
   $request->print('</html>');    $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;
       } 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 as $lastdate, and answers will be available at $date";
     }
     &Apache::lonxml::debug("sending back :$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 getfile {  sub handler {
   my ($filename) = @_;    my $request=$_[0];
   my $a="";  
   if (! -e $filename ) {    if ( $ENV{'user.name'} eq 'albertel' ) { $Apache::lonxml::debug=1; }
     &Apache::lonnet::subscribe($filename);    
     &Apache::lonnet::repcopy($filename);    my (@targets) = &get_target();
   
     if ($ENV{'browser.mathml'}) {
       $request->content_type('text/xml');
     } else {
       $request->content_type('text/html');
   }    }
   {    $request->send_http_header;
     my $fh=Apache::File->new($filename);    return OK if $request->header_only;
     
     &Apache::lonhomework::send_header($request);
     
     #check if allowed to see
     
     foreach my $target (@targets) {
       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='';
       }
       if ( $target eq 'grade') { 
         $Apache::lonxml::textredirection = 0; 
       } else {
         $Apache::lonxml::textredirection = 1; 
       }
       $result = &Apache::lonxml::xmlparse($target, $problem,
    $default.&setup_vars($target),%mystyle);
   
     while (<$fh>) {      #$request->print("Result follows:");
       $a .=$_;      $request->print($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));
     }      }
   }    }
   return $a    &Apache::lonhomework::send_footer($request);
     
     return OK;
   
 }  }
   
 1;  1;
Removed from v.1.9  
changed lines
  Added in v.1.25

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