Annotation of loncom/homework/lonhomework.pm, revision 1.20
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;
1.1 albertel 13:
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: $request->print(&Apache::lontexconvert::footer());
1.2 albertel 53: }
54:
1.20 ! albertel 55: sub check_date {
! 56: my ($type,$id) = @_;
! 57: my $date ='';
! 58: my $passed = '';
! 59: &Apache::lonxml::debug("checking :$type: for part :$id:");
! 60: if ($type eq 'OPEN_DATE') {
! 61: $date = &Apache::lonnet::EXT("resource.$id.opendate");
! 62: } elsif ($type eq 'DUE_DATE') {
! 63: $date = &Apache::lonnet::EXT("resource.$id.duedate");
! 64: } elsif ($type eq 'START_DATE') {
! 65: $date = &Apache::lonnet::EXT("resource.$id.duedate");
! 66: } else {
! 67: &Apache::lonxml::error("Unknown date request $type");
! 68: $date = '';
! 69: }
! 70: &Apache::lonxml::debug("found :$date:");
! 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 $date;
! 76: }
! 77: &Apache::lonxml::debug("sending back :$date:$passed:");
! 78: return ($date,$passed);
! 79: }
! 80:
1.17 www 81: sub handler {
1.18 albertel 82: my $request=$_[0];
1.17 www 83:
1.20 ! albertel 84: if ( $ENV{'user.name'} eq 'albertel' ) { $Apache::lonxml::debug=1; }
1.18 albertel 85:
86: my (@targets) = &get_target();
87:
1.17 www 88: if ($ENV{'browser.mathml'}) {
89: $request->content_type('text/xml');
90: } else {
91: $request->content_type('text/html');
92: }
93: $request->send_http_header;
94: return 'OK' if $request->header_only;
1.18 albertel 95:
1.17 www 96: &Apache::lonhomework::send_header($request);
1.18 albertel 97:
1.20 ! albertel 98: #check if allowed to see
! 99:
1.18 albertel 100: foreach my $target (@targets) {
101: my $file=&Apache::lonnet::filelocation("",$request->uri);
102: my $problem=&Apache::lonnet::getfile($file);
103: if ($problem == -1) {
104: &Apache::lonxml::error("<b> Unable to find <i>$file</i></b>");
105: $problem='';
106: }
107:
108: my %mystyle;
109: my $result = '';
110: &Apache::inputtags::initialize_inputtags;
111: %Apache::lonhomework::results=();
112: %Apache::lonhomework::history=&Apache::lonnet::restore;
113: #ignore error conditions
114: my ($temp)=keys %Apache::lonhomework::history ;
115: if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); }
1.20 ! albertel 116: if ($target eq 'web' && &Apache::lonnet::symbread() eq '') {
! 117: $request->print("Vieiwing this problem as not a student, submissions will be ignored.");
! 118: }
1.18 albertel 119: if ($target eq 'grade') {
120: my $resultkey;
121: foreach $resultkey (sort keys %Apache::lonhomework::history) {
122: &Apache::lonxml::debug("$resultkey ---- $Apache::lonhomework::history{$resultkey}");
123: }
124: &Apache::lonxml::debug("\n<br>restored values^</br>\n");
125: }
126: my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
127: if ($default == -1) {
128: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
129: $default='';
130: }
131: if ( $target eq 'grade') {
132: $Apache::lonxml::textredirection = 0;
133: } else {
134: $Apache::lonxml::textredirection = 1;
135: }
136: $result = &Apache::lonxml::xmlparse($target, $problem,
137: $default.&setup_vars($target),%mystyle);
1.17 www 138:
1.18 albertel 139: #$request->print("Result follows:");
140: $request->print($result);
141: #$request->print(":Result ends");
142: if ($target eq 'grade') {
143: my $resultkey;
144: foreach $resultkey (sort keys %Apache::lonhomework::results) {
145: &Apache::lonxml::debug("$resultkey ---- $Apache::lonhomework::results{$resultkey}");
146: }
147: &Apache::lonxml::debug("\n<br>storing values^</br>\n");
148: }
149:
150: my ($temp) = keys %Apache::lonhomework::results;
151: if ( $temp ne '' ) {
152: &Apache::lonxml::debug("Store return message:".&Apache::lonnet::cstore(%Apache::lonhomework::results));
153: }
1.17 www 154: }
155: &Apache::lonhomework::send_footer($request);
1.18 albertel 156:
1.17 www 157: return 'OK';
158:
1.1 albertel 159: }
160:
161: 1;
162: __END__
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