Annotation of loncom/homework/lonhomework.pm, revision 1.29
1.1 albertel 1: # The LON-CAPA Homework handler
2: # Guy Albertelli
1.17 www 3: # 11/30 Gerd Kortemeyer
1.25 www 4: # 6/1 Gerd Kortemeyer
1.1 albertel 5:
6: package Apache::lonhomework;
7: use strict;
8: use Apache::style;
9: use Apache::lonxml;
1.2 albertel 10: use Apache::lonnet;
11: use Apache::inputtags;
12: use Apache::structuretags;
1.9 albertel 13: use Apache::response;
1.22 albertel 14: use Apache::hint;
1.26 www 15: use Apache::Constants qw(:common);
1.16 albertel 16:
1.5 albertel 17: sub get_target {
1.15 albertel 18: if ( $ENV{'request.state'} eq "published") {
1.18 albertel 19: if ( defined $ENV{'form.submit'}) {
20: return ('grade', 'web');
21: } else {
22: return ('web');
23: }
1.15 albertel 24: } elsif ($ENV{'request.state'} eq "construct") {
1.16 albertel 25: if ( defined $ENV{'form.preview'}) {
1.18 albertel 26: if ( defined $ENV{'form.submit'}) {
27: return ('grade', 'web');
28: } else {
29: return ('web');
30: }
1.15 albertel 31: } else {
1.29 ! albertel 32: #return ('edit');
! 33: #edit is currently broken
! 34: return ('web');
1.15 albertel 35: }
36: }
1.18 albertel 37: return ();
1.5 albertel 38: }
39:
1.3 albertel 40: sub setup_vars {
1.5 albertel 41: my ($target) = @_;
1.11 albertel 42: return ';'
43: # return ';$external::target='.$target.';';
1.2 albertel 44: }
45:
46: sub send_header {
47: my ($request)= @_;
1.14 albertel 48: $request->print(&Apache::lontexconvert::header());
1.16 albertel 49: $ENV{'request.uri'}=$request->uri;
50: # $request->print('<form name='.$ENV{'form.request.prefix'}.'lonhomework method="POST" action="'.$request->uri.'">');
1.2 albertel 51: }
52:
53: sub send_footer {
54: my ($request)= @_;
1.16 albertel 55: # $request->print('</form>');
1.14 albertel 56: $request->print(&Apache::lontexconvert::footer());
1.2 albertel 57: }
58:
1.21 albertel 59: #@Apache::lonhomework::date_status=();
60: #@Apache::lonhomework::date_msg=();
1.20 albertel 61: sub check_date {
1.21 albertel 62: my ($id) = @_;
1.20 albertel 63: my $date ='';
1.21 albertel 64: my $status = '';
65: my $datemsg = '';
66: my $lastdate = '';
67: my $temp;
68: my $type;
69: my $passed;
70: &Apache::lonxml::debug("checking for part :$id:");
71: foreach $temp ("opendate","duedate","answerdate") {
72: $lastdate = $date;
73: $date = &Apache::lonnet::EXT("resource.$id.$temp");
74: &Apache::lonxml::debug("found :$date: for :$temp:");
75: if ($date eq '') {
76: $date = "an unknown date"; $passed = 0;
77: } else {
78: if (time < $date) { $passed = 0; } else { $passed = 1; }
79: $date = localtime $date;
80: }
81: if (!$passed) { $type=$temp; last; }
1.20 albertel 82: }
1.21 albertel 83: &Apache::lonxml::debug("have :$type:$passed:");
84: if ($passed) {
85: $status='SHOW_ANSWER';
86: $datemsg=$date;
87: } elsif ($type eq 'opendate') {
88: $status='CLOSED';
89: $datemsg = "will open on $date";
90: } elsif ($type eq 'duedate') {
91: $status='CAN_ANSWER';
92: $datemsg = "is due at $date";
93: } elsif ($type eq 'answerdate') {
94: $status='CLOSED';
1.23 albertel 95: $datemsg = "was due as $lastdate, and answers will be available at $date";
1.20 albertel 96: }
1.27 albertel 97: if ($status eq 'CAN_ANSWER') {
98: #check #tries
99: my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
100: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
101: if ( $tries eq '' ) { $tries = '0'; }
102: if ( $maxtries eq '' ) { $maxtries = '2'; }
103: if ($tries >= $maxtries) { $status = 'CANNOT_ANSWER'; }
104: }
1.21 albertel 105: &Apache::lonxml::debug("sending back :$status:$datemsg:");
1.24 albertel 106: if ($ENV{'request.state'} eq "construct") {
107: &Apache::lonxml::debug("in construction ignoring dates");
108: $status='CAN_ANSWER';
109: $datemsg='is in under construction';
110: }
1.21 albertel 111: return ($status,$datemsg);
1.20 albertel 112: }
113:
1.17 www 114: sub handler {
1.18 albertel 115: my $request=$_[0];
1.17 www 116:
1.20 albertel 117: if ( $ENV{'user.name'} eq 'albertel' ) { $Apache::lonxml::debug=1; }
1.18 albertel 118:
119: my (@targets) = &get_target();
120:
1.17 www 121: if ($ENV{'browser.mathml'}) {
122: $request->content_type('text/xml');
123: } else {
124: $request->content_type('text/html');
125: }
126: $request->send_http_header;
1.25 www 127: return OK if $request->header_only;
1.18 albertel 128:
1.17 www 129: &Apache::lonhomework::send_header($request);
1.18 albertel 130:
1.20 albertel 131: #check if allowed to see
132:
1.18 albertel 133: foreach my $target (@targets) {
134: my $file=&Apache::lonnet::filelocation("",$request->uri);
135: my $problem=&Apache::lonnet::getfile($file);
136: if ($problem == -1) {
137: &Apache::lonxml::error("<b> Unable to find <i>$file</i></b>");
138: $problem='';
139: }
140:
141: my %mystyle;
142: my $result = '';
143: &Apache::inputtags::initialize_inputtags;
144: %Apache::lonhomework::results=();
145: %Apache::lonhomework::history=&Apache::lonnet::restore;
146: #ignore error conditions
147: my ($temp)=keys %Apache::lonhomework::history ;
148: if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); }
1.20 albertel 149: if ($target eq 'web' && &Apache::lonnet::symbread() eq '') {
150: $request->print("Vieiwing this problem as not a student, submissions will be ignored.");
151: }
1.18 albertel 152: if ($target eq 'grade') {
153: my $resultkey;
154: foreach $resultkey (sort keys %Apache::lonhomework::history) {
155: &Apache::lonxml::debug("$resultkey ---- $Apache::lonhomework::history{$resultkey}");
156: }
157: &Apache::lonxml::debug("\n<br>restored values^</br>\n");
158: }
159: my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
160: if ($default == -1) {
161: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
162: $default='';
163: }
164: $result = &Apache::lonxml::xmlparse($target, $problem,
165: $default.&setup_vars($target),%mystyle);
1.17 www 166:
1.18 albertel 167: #$request->print("Result follows:");
168: $request->print($result);
169: #$request->print(":Result ends");
170: if ($target eq 'grade') {
1.27 albertel 171:
1.18 albertel 172: my $resultkey;
173: foreach $resultkey (sort keys %Apache::lonhomework::results) {
174: &Apache::lonxml::debug("$resultkey ---- $Apache::lonhomework::results{$resultkey}");
175: }
176: &Apache::lonxml::debug("\n<br>storing values^</br>\n");
177: }
178:
179: my ($temp) = keys %Apache::lonhomework::results;
180: if ( $temp ne '' ) {
181: &Apache::lonxml::debug("Store return message:".&Apache::lonnet::cstore(%Apache::lonhomework::results));
182: }
1.17 www 183: }
184: &Apache::lonhomework::send_footer($request);
1.18 albertel 185:
1.25 www 186: return OK;
1.17 www 187:
1.1 albertel 188: }
189:
190: 1;
191: __END__
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