Annotation of loncom/homework/lonhomework.pm, revision 1.23

1.1       albertel    1: # The LON-CAPA Homework handler
                      2: # Guy Albertelli
1.17      www         3: # 11/30 Gerd Kortemeyer
1.1       albertel    4: 
                      5: package Apache::lonhomework;
                      6: use strict;
                      7: use Apache::style;
                      8: use Apache::lonxml;
1.2       albertel    9: use Apache::lonnet;
                     10: use Apache::inputtags;
                     11: use Apache::structuretags;
1.9       albertel   12: use Apache::response;
1.22      albertel   13: use Apache::hint;
1.16      albertel   14: 
1.5       albertel   15: sub get_target {
1.15      albertel   16:   if ( $ENV{'request.state'} eq "published") {
1.18      albertel   17:     if ( defined $ENV{'form.submit'}) {
                     18:       return ('grade', 'web');
                     19:     } else {
                     20:       return ('web');
                     21:     }
1.15      albertel   22:   } elsif ($ENV{'request.state'} eq "construct") {
1.16      albertel   23:     if ( defined $ENV{'form.preview'}) {
1.18      albertel   24:       if ( defined $ENV{'form.submit'}) {
                     25: 	return ('grade', 'web');
                     26:       } else {
                     27: 	return ('web');
                     28:       }
1.15      albertel   29:     } else {
1.18      albertel   30:       return ('edit');
1.15      albertel   31:     }
                     32:   }
1.18      albertel   33:   return ();
1.5       albertel   34: }
                     35: 
1.3       albertel   36: sub setup_vars {
1.5       albertel   37:   my ($target) = @_;
1.11      albertel   38:   return ';'
                     39: #  return ';$external::target='.$target.';';
1.2       albertel   40: }
                     41: 
                     42: sub send_header {
                     43:   my ($request)= @_;
1.14      albertel   44:   $request->print(&Apache::lontexconvert::header());
1.16      albertel   45:   $ENV{'request.uri'}=$request->uri;
                     46: #  $request->print('<form name='.$ENV{'form.request.prefix'}.'lonhomework method="POST" action="'.$request->uri.'">');
1.2       albertel   47: }
                     48: 
                     49: sub send_footer {
                     50:   my ($request)= @_;
1.16      albertel   51: #  $request->print('</form>');
1.14      albertel   52:   $request->print(&Apache::lontexconvert::footer());
1.2       albertel   53: }
                     54: 
1.21      albertel   55: #@Apache::lonhomework::date_status=();
                     56: #@Apache::lonhomework::date_msg=();
1.20      albertel   57: sub check_date {
1.21      albertel   58:   my ($id) = @_;
1.20      albertel   59:   my $date ='';
1.21      albertel   60:   my $status = '';
                     61:   my $datemsg = '';
                     62:   my $lastdate = '';
                     63:   my $temp;
                     64:   my $type;
                     65:   my $passed;
                     66:   &Apache::lonxml::debug("checking for part :$id:");
                     67:   foreach $temp ("opendate","duedate","answerdate") {
                     68:     $lastdate = $date;
                     69:     $date = &Apache::lonnet::EXT("resource.$id.$temp");
                     70:     &Apache::lonxml::debug("found :$date: for :$temp:");
                     71:     if ($date eq '') {
                     72:       $date = "an unknown date"; $passed = 0;
                     73:     } else {
                     74:       if (time < $date) { $passed = 0; } else { $passed = 1; }
                     75:       $date = localtime $date;
                     76:     }
                     77:     if (!$passed) { $type=$temp; last; }
1.20      albertel   78:   }
1.21      albertel   79:   &Apache::lonxml::debug("have :$type:$passed:");
                     80:   if ($passed) {
                     81:     $status='SHOW_ANSWER';
                     82:     $datemsg=$date;
                     83:   } elsif ($type eq 'opendate') {
                     84:     $status='CLOSED';
                     85:     $datemsg = "will open on $date";
                     86:   } elsif ($type eq 'duedate') {
                     87:     $status='CAN_ANSWER';
                     88:     $datemsg = "is due at $date";
                     89:   } elsif ($type eq 'answerdate') {
                     90:     $status='CLOSED';
1.23    ! albertel   91:     $datemsg = "was due as $lastdate, and answers will be available at $date";
1.20      albertel   92:   }
1.21      albertel   93:   &Apache::lonxml::debug("sending back :$status:$datemsg:");
                     94:   return ($status,$datemsg);
1.20      albertel   95: }
                     96: 
1.17      www        97: sub handler {
1.18      albertel   98:   my $request=$_[0];
1.17      www        99: 
1.20      albertel  100:   if ( $ENV{'user.name'} eq 'albertel' ) { $Apache::lonxml::debug=1; }
1.18      albertel  101:   
                    102:   my (@targets) = &get_target();
                    103: 
1.17      www       104:   if ($ENV{'browser.mathml'}) {
                    105:     $request->content_type('text/xml');
                    106:   } else {
                    107:     $request->content_type('text/html');
                    108:   }
                    109:   $request->send_http_header;
                    110:   return 'OK' if $request->header_only;
1.18      albertel  111:   
1.17      www       112:   &Apache::lonhomework::send_header($request);
1.18      albertel  113:   
1.20      albertel  114:   #check if allowed to see
                    115:   
1.18      albertel  116:   foreach my $target (@targets) {
                    117:     my $file=&Apache::lonnet::filelocation("",$request->uri);
                    118:     my $problem=&Apache::lonnet::getfile($file);
                    119:     if ($problem == -1) {
                    120:       &Apache::lonxml::error("<b> Unable to find <i>$file</i></b>");
                    121:       $problem='';
                    122:     }
                    123:     
                    124:     my %mystyle;
                    125:     my $result = '';
                    126:     &Apache::inputtags::initialize_inputtags;
                    127:     %Apache::lonhomework::results=();
                    128:     %Apache::lonhomework::history=&Apache::lonnet::restore;
                    129:     #ignore error conditions
                    130:     my ($temp)=keys %Apache::lonhomework::history ;
                    131:     if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); } 
1.20      albertel  132:     if ($target eq 'web' && &Apache::lonnet::symbread() eq '') {
                    133:       $request->print("Vieiwing this problem as not a student, submissions will be ignored.");
                    134:     }
1.18      albertel  135:     if ($target eq 'grade') {
                    136:       my $resultkey;
                    137:       foreach $resultkey (sort keys %Apache::lonhomework::history) {
                    138: 	&Apache::lonxml::debug("$resultkey ---- $Apache::lonhomework::history{$resultkey}");
                    139:       }
                    140:       &Apache::lonxml::debug("\n<br>restored values^</br>\n");
                    141:     }
                    142:     my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
                    143:     if ($default == -1) {
                    144:       &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
                    145:       $default='';
                    146:     }
                    147:     if ( $target eq 'grade') { 
                    148:       $Apache::lonxml::textredirection = 0; 
                    149:     } else {
                    150:       $Apache::lonxml::textredirection = 1; 
                    151:     }
                    152:     $result = &Apache::lonxml::xmlparse($target, $problem,
                    153: 			$default.&setup_vars($target),%mystyle);
1.17      www       154: 
1.18      albertel  155:     #$request->print("Result follows:");
                    156:     $request->print($result);
                    157:     #$request->print(":Result ends");
                    158:     if ($target eq 'grade') {
                    159:       my $resultkey;
                    160:       foreach $resultkey (sort keys %Apache::lonhomework::results) {
                    161: 	&Apache::lonxml::debug("$resultkey ---- $Apache::lonhomework::results{$resultkey}");
                    162:       }
                    163:       &Apache::lonxml::debug("\n<br>storing values^</br>\n");
                    164:     }
                    165:     
                    166:     my ($temp) = keys %Apache::lonhomework::results;
                    167:     if ( $temp ne '' ) {
                    168:       &Apache::lonxml::debug("Store return message:".&Apache::lonnet::cstore(%Apache::lonhomework::results));
                    169:     }
1.17      www       170:   }
                    171:   &Apache::lonhomework::send_footer($request);
1.18      albertel  172:   
1.17      www       173:   return 'OK';
                    174: 
1.1       albertel  175: }
                    176: 
                    177: 1;
                    178: __END__

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>