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Diff for /loncom/homework/lonhomework.pm between versions 1.21 and 1.41

version 1.21, 2000/12/15 20:31:30 version 1.41, 2001/04/26 21:28:33
Line 1 Line 1
 # The LON-CAPA Homework handler  # The LON-CAPA Homework handler
 # Guy Albertelli  # Guy Albertelli
 # 11/30 Gerd Kortemeyer  # 11/30 Gerd Kortemeyer
   # 6/1 Gerd Kortemeyer
   
 package Apache::lonhomework;  package Apache::lonhomework;
 use strict;  use strict;
Line 10  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;
   use Apache::outputtags;
   use Apache::Constants qw(:common);
   
 sub get_target {  sub get_target {
   if ( $ENV{'request.state'} eq "published") {    if ( $ENV{'request.state'} eq "published") {
     if ( defined $ENV{'form.submit'}) {      if ( defined $ENV{'form.submitted'}) {
       return ('grade', 'web');        return ('grade', 'web');
     } else {      } else {
       return ('web');        return ('web');
     }      }
   } elsif ($ENV{'request.state'} eq "construct") {    } elsif ($ENV{'request.state'} eq "construct") {
     if ( defined $ENV{'form.preview'}) {      if ( defined $ENV{'form.preview'}) {
       if ( defined $ENV{'form.submit'}) {        if ( defined $ENV{'form.submitted'}) {
  return ('grade', 'web');   return ('grade', 'web');
       } else {        } else {
  return ('web');   return ('web');
       }        }
     } else {      } else {
       return ('edit');        return ('grade','web');
         if ( $ENV{'form.submitted'} eq 'edit' ) {
    return ('modified','edit');
         } else {
    return ('edit');
         }
     }      }
   }    }
   return ();    return ();
Line 46  sub send_header { Line 54  sub send_header {
 #  $request->print('<form name='.$ENV{'form.request.prefix'}.'lonhomework method="POST" action="'.$request->uri.'">');  #  $request->print('<form name='.$ENV{'form.request.prefix'}.'lonhomework method="POST" action="'.$request->uri.'">');
 }  }
   
   sub createmenu {
     my ($which,$request)=@_;
     if ($which eq 'grade') {
       $request->print('<script language="JavaScript"> 
             hwkmenu=window.open("/res/adm/pages/homeworkmenu.html","homeworkremote",
                    "height=350,width=150,menubar=no");
             </script>');
     }
   }
   
 sub send_footer {  sub send_footer {
   my ($request)= @_;    my ($request)= @_;
 #  $request->print('</form>');  #  $request->print('</form>');
   $request->print(&Apache::lontexconvert::footer());    $request->print(&Apache::lontexconvert::footer());
 }  }
   
 #@Apache::lonhomework::date_status=();  $Apache::lonxml::browse='';
 #@Apache::lonhomework::date_msg=();  
 sub check_date {  sub check_date {
   my ($id) = @_;    my ($id) = @_;
   my $date ='';    my $date ='';
Line 70  sub check_date { Line 87  sub check_date {
     &Apache::lonxml::debug("found :$date: for :$temp:");      &Apache::lonxml::debug("found :$date: for :$temp:");
     if ($date eq '') {      if ($date eq '') {
       $date = "an unknown date"; $passed = 0;        $date = "an unknown date"; $passed = 0;
       } elsif ($date eq 'con_lost') {
         $date = "an indeterminate date"; $passed = 0;
     } else {      } else {
       if (time < $date) { $passed = 0; } else { $passed = 1; }        if (time < $date) { $passed = 0; } else { $passed = 1; }
       $date = localtime $date;        $date = localtime $date;
Line 88  sub check_date { Line 107  sub check_date {
     $datemsg = "is due at $date";      $datemsg = "is due at $date";
   } elsif ($type eq 'answerdate') {    } elsif ($type eq 'answerdate') {
     $status='CLOSED';      $status='CLOSED';
     $datemsg = "was due as $lastdate, and asnswers will be available at $date";      $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:$datemsg:");    &Apache::lonxml::debug("sending back :$status:$datemsg:");
     if (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED')) {
       &Apache::lonxml::debug("should be allowed to browse a resource when closed");
       $status='CAN_ANSWER';
       $datemsg='is closed but you are allowed to view it';
     }
     if ($ENV{'request.state'} eq "construct") {
       &Apache::lonxml::debug("in construction ignoring dates");
       $status='CAN_ANSWER';
       $datemsg='is in under construction';
     }
   return ($status,$datemsg);    return ($status,$datemsg);
 }  }
   
 sub handler {  sub showhash {
   my $request=$_[0];    my (%hash) = @_;
     my $resultkey;
     foreach $resultkey (sort keys %hash) {
       &Apache::lonxml::debug("$resultkey ---- $hash{$resultkey}");
     }
     &Apache::lonxml::debug("\n<br />restored values^</br>\n");
     return '';
   }
   
   if ( $ENV{'user.name'} eq 'albertel' ) { $Apache::lonxml::debug=1; }  sub setuppermissions {
       $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$ENV{'request.filename'});
   my (@targets) = &get_target();    $Apache::lonhomework::viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});
     return ''
   }
   
   sub setupheader {
     my $request=$_[0];
   if ($ENV{'browser.mathml'}) {    if ($ENV{'browser.mathml'}) {
     $request->content_type('text/xml');      $request->content_type('text/xml');
   } else {    } else {
     $request->content_type('text/html');      $request->content_type('text/html');
   }    }
   $request->send_http_header;    $request->send_http_header;
   return 'OK' if $request->header_only;    return OK if $request->header_only;
     
   &Apache::lonhomework::send_header($request);    &Apache::lonhomework::send_header($request);
       return ''
   #check if allowed to see  }
     
   sub renderpage {
     my ($request,$file) = @_;
   
     my (@targets) = &get_target();
   foreach my $target (@targets) {    foreach my $target (@targets) {
     my $file=&Apache::lonnet::filelocation("",$request->uri);  
     my $problem=&Apache::lonnet::getfile($file);      my $problem=&Apache::lonnet::getfile($file);
     if ($problem == -1) {      if ($problem == -1) {
       &Apache::lonxml::error("<b> Unable to find <i>$file</i></b>");        &Apache::lonxml::error("<b> Unable to find <i>$file</i></b>");
       $problem='';        $problem='';
     }      }
       
     my %mystyle;      my %mystyle;
     my $result = '';      my $result = '';
     &Apache::inputtags::initialize_inputtags;      &Apache::inputtags::initialize_inputtags;
     %Apache::lonhomework::results=();      %Apache::lonhomework::results=();
     %Apache::lonhomework::history=&Apache::lonnet::restore;      %Apache::lonhomework::history=&Apache::lonnet::restore();
     #ignore error conditions      #ignore error conditions
     my ($temp)=keys %Apache::lonhomework::history ;      my ($temp)=keys %Apache::lonhomework::history ;
     if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); }       if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); } 
     if ($target eq 'web' && &Apache::lonnet::symbread() eq '') {      if ($target eq 'web') {
       $request->print("Vieiwing this problem as not a student, submissions will be ignored.");        if (&Apache::lonnet::symbread() eq '') {
     }   if ($ENV{'request.state'} eq "construct") {
     if ($target eq 'grade') {    $request->print("In construction space, submissions ignored<br />");
       my $resultkey;   } else {
       foreach $resultkey (sort keys %Apache::lonhomework::history) {    $request->print("Browsing or <a href=\"/adm/ambiguous\">ambiguous</a> reference, submissions ignored<br />");
  &Apache::lonxml::debug("$resultkey ---- $Apache::lonhomework::history{$resultkey}");   }
       }        }
       &Apache::lonxml::debug("\n<br>restored values^</br>\n");        if ($Apache::lonhomework::viewgrades eq 'F') {&createmenu('grade',$request); }
     }      }
       if ($target eq 'grade') { &showhash(%Apache::lonhomework::history); }
   
     my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');      my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
     if ($default == -1) {      if ($default == -1) {
       &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");        &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
       $default='';        $default='';
     }      }
     if ( $target eq 'grade') {   
       $Apache::lonxml::textredirection = 0;   
     } else {  
       $Apache::lonxml::textredirection = 1;   
     }  
     $result = &Apache::lonxml::xmlparse($target, $problem,      $result = &Apache::lonxml::xmlparse($target, $problem,
  $default.&setup_vars($target),%mystyle);   $default.&setup_vars($target),%mystyle);
   
     #$request->print("Result follows:");      #$request->print("Result follows:");
     $request->print($result);      if ($target eq 'modified') {
     #$request->print(":Result ends");        my $fileout = &Apache::lonnet::filelocation("",$request->uri);
     if ($target eq 'grade') {        my $filesave=$fileout.".bak";
       my $resultkey;  
       foreach $resultkey (sort keys %Apache::lonhomework::results) {        my $fs=Apache::File->new(">$filesave");
  &Apache::lonxml::debug("$resultkey ---- $Apache::lonhomework::results{$resultkey}");        print $fs $problem;
       }        $request->print("<b>Making Backup to $filesave</b><br />");
       &Apache::lonxml::debug("\n<br>storing values^</br>\n");  
         my $fh=Apache::File->new(">$fileout");
         print $fh $result;
         $request->print("<b>Saving Modifications to $fileout</b><br />");
       } else {
         $request->print($result);
     }      }
           #$request->print(":Result ends");
       if ($target eq 'grade') { &showhash(%Apache::lonhomework::results); }
   
       #store new values
     my ($temp) = keys %Apache::lonhomework::results;      my ($temp) = keys %Apache::lonhomework::results;
     if ( $temp ne '' ) {      if ( $temp ne '' ) {
       &Apache::lonxml::debug("Store return message:".&Apache::lonnet::cstore(%Apache::lonhomework::results));        &Apache::lonxml::debug("Store return message:".
        &Apache::lonnet::cstore(\%Apache::lonhomework::results));
       }
     }
   }
   
   sub handler {
     my $request=$_[0];
   
     if ( $ENV{'user.name'} eq 'albertel' ) {$Apache::lonxml::debug=1;}
   
     if (&setupheader($request)) { return OK; }
   
     #setup permissions
     $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$ENV{'request.filename'});
     $Apache::lonhomework::viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});
     &Apache::lonxml::debug("Permissions:$Apache::lonhomework::browse:$Apache::lonhomework::viewgrades:");
   
     my $file=&Apache::lonnet::filelocation("",$request->uri);
   
     #check if we know where we are
     if ($ENV{'request.course.fn'} && !&Apache::lonnet::symbread()) { 
       # if we are browsing we might not be able to know where we are
       if ($Apache::lonhomework::browse ne 'F') {
         #should know where we are, so ask
         $request->internal_redirect('/adm/ambiguous'); return;
       }
     }
   
     if ($ENV{'request.state'} eq "construct") {
       if ( -e $file ) {
         if (!(defined $ENV{'form.showproblem'})) {
    #first visit to problem in construction space
    &view_or_edit_menu($request);
         } else {
    &renderpage($request,$file);
         }
       } else {
         # requested file doesn't exist in contruction space
         &newproblem($request);
     }      }
     } else {
       # just render the page normally outside of construction space
       &renderpage($request,$file);
   }    }
   
   &Apache::lonhomework::send_footer($request);    &Apache::lonhomework::send_footer($request);
       # always turn off debug messages
   return 'OK';    $Apache::lonxml::debug=0;
     return OK;
   
 }  }
   
Removed from v.1.21  
changed lines
  Added in v.1.41

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