1: # The LON-CAPA grading handler.
2: #
3: # Handles the viewing of grades.
4: #
5: # YEAR=2001
6: # 2/7,2/9,2/13,4/16,4/17,5/1 Guy Albertelli
7: # 6/8 Gerd Kortemeyer
8: # 7/26 Guy Albertelli
9: # 7/27 H.K. Ng
10: # 7/30 Guy Albertelli
11: # 8/6 Scott Harrison
12:
13: package Apache::grades;
14: use strict;
15: use Apache::style;
16: use Apache::lonxml;
17: use Apache::lonnet;
18: use Apache::loncommon;
19: use Apache::lonhomework;
20: use Apache::Constants qw(:common);
21:
22: # ======================================================== Get more information
23: sub moreinfo {
24: my ($request,$reason) = @_;
25: $request->print("Unable to process request: $reason");
26: if ( $Apache::grades::viewgrades eq 'F' ) {
27: $request->print('<form action="/adm/grades" method="post">'."\n");
28: $request->print('<input type="hidden" name="url" value="'.
29: $ENV{'form.url'}.'"></input>'."\n");
30: $request->print('<input type="hidden" name="command" value="'.
31: $ENV{'form.command'}.'"></input>'."\n");
32: $request->print("Student:".
33: '<input type="text" name="student" value="'.
34: $ENV{'form.student'}.'"></input>'."<br />\n");
35: $request->print("Domain:".
36: '<input type="text" name="domain" value="'.
37: $ENV{'user.domain'}.'"></input>'."<br />\n");
38: $request->print('<input type="submit" name="submit" '.
39: 'value="ReSubmit"></input>'."<br />\n");
40: $request->print('</form>');
41: }
42: return '';
43: }
44:
45: # ========================================= Displays the class list of students
46: sub listStudents {
47: my ($request) = shift;
48: my ($cdom,$cnum) = split(/_/,$ENV{'request.course.id'});
49: my $chome = $ENV{"course.$ENV{'request.course.id'}.home"};
50: $request->print ("Found $cdom:$cnum:$chome<br />");
51: my (%classlist) = &getclasslist($cdom,$cnum,$chome,'0');
52: foreach my $student ( sort(@{ $classlist{'allids'} }) ) {
53: my ($sname,$sdom) = split(/:/,$student);
54: my $reply = &Apache::lonnet::reply('get:'.$sdom.':'.$sname.
55: ':environment:lastname&generation&firstname&middle'.
56: 'name',&Apache::lonnet::homeserver($sname,$sdom));
57: print "reply=$reply<br>";
58: my (@nameparts) = split /&/,$reply;
59: # my $sfullname = $Apache::lonnet::unescape($nameparts[0]);
60: if ( $Apache::grades::viewgrades eq 'F' ) {
61: $request->print('<form action="/adm/grades" method="post">'."\n");
62: $request->print("$sname @nameparts\n");
63: $request->print('<input type="hidden" name="url" value="'.
64: $ENV{'form.url'}.'"></input>'."\n");
65: $request->print('<input type="hidden" name="command" value="'.
66: $ENV{'form.command'}.'"></input>'."\n");
67: $request->print('<input type="hidden" name="student" '.
68: 'value="'.$sname.'"></input>'."\n");
69: $request->print('<input type="hidden" name="domain" '.
70: 'value="'.$sdom.'"></input>'."\n");
71: $request->print('<input type="submit" name="submit" '.
72: 'value="View"></input>'."<br />\n");
73: $request->print('</form>');
74: }
75: }
76: }
77:
78: # ========== Finds a user based on a name substring (returns a 2 element array)
79: #FIXME - needs to handle multiple matches
80: sub finduser {
81: my ($name) = @_;
82: my $domain = '';
83: if ( $Apache::grades::viewgrades eq 'F' ) {
84: #get classlist
85: my ($cdom,$cnum) = split(/_/,$ENV{'request.course.id'});
86: my $chome = $ENV{"course.$ENV{'request.course.id'}.home"};
87: #print "Found $cdom:$cnum:$chome<br />";
88: my (%classlist) = &getclasslist($cdom,$cnum,$chome,'0');
89: foreach my $student ( sort(@{ $classlist{'allids'} }) ) {
90: my ($posname,$posdomain) = split(/:/,$student);
91: if ($posname =~ $name) {
92: $name = $posname;
93: $domain = $posdomain;
94: last;
95: }
96: }
97: return ($name,$domain);
98: } else {
99: return ($ENV{'user.name'},$ENV{'user.domain'});
100: }
101: }
102:
103: # ===================================== Gets a class list (returns a hash list)
104: sub getclasslist {
105: my ($coursedomain,$coursenum,$coursehome,$hideexpired) = @_;
106: my $classlist = &Apache::lonnet::reply('dump:'.$coursedomain.':'.
107: $coursenum.':classlist',$coursehome);
108: my %classlist = ();
109: my $now = time;
110: foreach my $record (split /&/, $classlist) {
111: my ($name,$value)=split(/=/,&Apache::lonnet::unescape($record));
112: my ($end,$start)=split(/:/,$value);
113: # still a student?
114: if (($hideexpired) && ($end) && ($end < $now)) {
115: print "Skipping:$name:$end:$now<br />\n";
116: next;
117: }
118: print "record=$record<br>";
119: push( @{ $classlist{'allids'} }, $name);
120: }
121: return (%classlist);
122: }
123:
124: # ============================== Get parts of a stored value (returns an array)
125: sub getpartlist {
126: my ($url) = @_;
127: my @parts =();
128: my (@metakeys) = split(/,/,&Apache::lonnet::metadata($url,'keys'));
129: foreach my $key (@metakeys) {
130: if ( $key =~ m/stores_([0-9]+)_.*/ ) {
131: push(@parts,$key);
132: }
133: }
134: return @parts;
135: }
136:
137: # =================================== Displays student grade (returns a string)
138: sub viewstudentgrade {
139: my ($url,$symb,$courseid,$student,@parts) = @_;
140: my $result = '';
141: my $cellclr = '"#ffffdd"';
142: my ($stuname,$domain) = split(/:/,$student);
143: my %record = &Apache::lonnet::restore($symb,$courseid,$domain,$stuname);
144: $result .= "<tr><td bgcolor=$cellclr>$stuname</td><td bgcolor=".
145: "\"$cellclr\" align=\"middle\">$domain</td>\n";
146: foreach my $part (@parts) {
147: my ($temp,$part,$type)=split(/_/,$part);
148: #print "resource.$part.$type = ".$record{"resource.$part.$type"}." <br />\n";
149: if ($type eq 'awarded') {
150: my $score = $record{"resource.$part.$type"};
151: $result .= "<td bgcolor=$cellclr align=\"middle\">".
152: "<input type=\"text\" name=".
153: "\"GRADE.$student.$part.$type\" ".
154: "value=\"$score\" size=\"4\" /></td>\n";
155: } elsif ($type eq 'tries') {
156: my $score = $record{"resource.$part.$type"};
157: $result .= "<td bgcolor=$cellclr align=\"middle\"><input ".
158: "type=\"text\" name=\"GRADE.$student.$part.".
159: "$type\" value=\"$score\" size=\"4\" /></td>\n";
160: } elsif ($type eq 'solved') {
161: my $score = $record{"resource.$part.$type"};
162: $result .= "<td bgcolor=\"$cellclr\" align=\"middle\">".
163: "<select name=\"GRADE.$student.$part.$type\">\n";
164: if ($score =~ /^correct/) {
165: $result .= "<option selected=\"on\">correct</option>".
166: "\n<option>incorrect</option>\n<option>".
167: "excused</option>\n<option>ungraded".
168: "</option>\n<option>nothing</option>\n";
169: } elsif ($score =~ /^incorrect/) {
170: $result .= "<option>correct</option>\n<option ".
171: "selected=\"on\">incorrect</option>\n".
172: "<option>excused</option>\n<option>".
173: "ungraded</option>\n<option>nothing</option>\n";
174: } elsif ($score eq '') {
175: $result .= "<option>correct</option>\n<option> ".
176: "incorrect</option>\n<option>excused".
177: "</option>\n<option>ungraded</option>\n".
178: "<option selected=\"on\">nothing</option>\n";
179: } elsif ($score =~ /^excused/) {
180: $result .= "<option>correct</option>\n<option>".
181: "incorrect</option>\n<option selected=".
182: "\"on\">excused</option>\n<option>".
183: "ungraded</option>\n<option>nothing</option>\n";
184: } elsif ($score =~ /^ungraded/) {
185: $result .= "<option>correct</option>\n<option>".
186: "incorrect</option>\n<option>excused".
187: "</option>\n<option selected=\"on\">".
188: "ungraded</option>\n<option>nothing</option>\n";
189: }
190: $result .= "</select></td>\n";
191: }
192: }
193: $result .= '</tr>';
194: return $result;
195: }
196:
197: # ========================================================== Sets student grade
198: #FIXME need to look at the meatdata <stores> spec
199: # on what type of data to accept and provide an
200: #interface based on that, also do that to above function.
201: sub setstudentgrade {
202: my ($url,$symb,$courseid,$student,@parts) = @_;
203: my $result ='';
204: my ($stuname,$domain) = split(/:/,$student);
205: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$stuname);
206: my %newrecord;
207: foreach my $part (@parts) {
208: my ($temp,$part,$type) = split(/_/,$part);
209: my $oldscore = $record{"resource.$part.$type"};
210: my $newscore = $ENV{"form.GRADE.$student.$part.$type"};
211: if ($type eq 'solved') {
212: my $update = 0;
213: if ($newscore eq 'nothing' ) {
214: if ($oldscore ne '') {
215: $update = 1;
216: $newscore = '';
217: }
218: } elsif ($oldscore !~ m/^$newscore/) {
219: $update=1;
220: $result.="Updating $stuname to $newscore<br />\n";
221: if ($newscore eq 'correct') {
222: $newscore = 'correct_by_override'; }
223: if ($newscore eq 'incorrect') {
224: $newscore = 'incorrect_by_override'; }
225: if ($newscore eq 'excused') {
226: $newscore = 'excused'; }
227: if ($newscore eq 'ungraded') {
228: $newscore = 'ungraded_attempted'; }
229: } else {
230: #$result.="$stuname:$part:$type:unchanged $oldscore to $newscore:<br />\n";
231: }
232: if ($update) { $newrecord{"resource.$part.$type"}=$newscore; }
233: } else {
234: if ($oldscore ne $newscore) {
235: $newrecord{"resource.$part.$type"}=$newscore;
236: $result .= "Updating $student"."'s status for $part.$type to ".
237: "$newscore<br />\n";
238: } else {
239: #$result.="$stuname:$part:$type:unchanged $oldscore to $newscore:<br />\n";
240: }
241: }
242: }
243: if ( scalar(keys(%newrecord)) > 0 ) {
244: $newrecord{"resource.regrader"} = $ENV{'user.name'}.':'.
245: $ENV{'user.domain'};
246: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$stuname);
247:
248: $result .= 'Stored away '.scalar(keys(%newrecord)).
249: " elements.<br />\n";
250: }
251: return $result;
252: }
253:
254:
255: # ========================================================== Attempt submission
256: sub submission {
257: my ($request) = @_;
258: my $url = $ENV{'form.url'};
259: $url =~ s-^http://($ENV{'SERVER_NAME'}|$ENV{'HTTP_HOST'})--;
260: if ($ENV{'form.student'} eq '') {
261: &moreinfo($request,"Need student login id"); return ''; }
262: # if ($ENV{'form.student'} eq '') { &listStudents($request); return ''; }
263: my ($uname,$udom) = &finduser($ENV{'form.student'});
264: if ($uname eq '') {
265: &moreinfo($request,"Unable to find student"); return ''; }
266: my $symb=&Apache::lonnet::symbread($url);
267: if ($symb eq '') {
268: $request->print("Unable to handle ambiguous references:$url:.");
269: return ''; }
270: my $answer = &Apache::loncommon::get_previous_attempt($symb,$uname,$udom,
271: $ENV{'request.course.id'});
272: my $result = "<h2> Submission Record </h2> $uname:$udom for $url <br />".
273: $answer;
274: return $result;
275: }
276:
277: # ================================================================= View grades
278: sub viewgrades {
279: my ($request) = @_;
280: my $result = '';
281:
282: #get resource reference
283: my $url = $ENV{'form.url'};
284: $url =~ s-^http://($ENV{'SERVER_NAME'}|$ENV{'HTTP_HOST'})--;
285: my $symb=$ENV{'form.symb'};
286: if (!$symb) { $symb = &Apache::lonnet::symbread($url); }
287: if ($symb eq '') {
288: $request->print("Unable to handle ambiguous references:$url:.");
289: return '';
290: }
291:
292: #get classlist
293: my ($cdom,$cnum) = split(/_/,$ENV{'request.course.id'});
294: my $chome = $ENV{"course.$ENV{'request.course.id'}.home"};
295: #print "Found $cdom:$cnum:$chome<br />";
296: my (%classlist) = &getclasslist($cdom,$cnum,$chome,'0');
297: my $headerclr = '"#ccffff"';
298: my $cellclr = '"#ffffcc"';
299:
300: #get list of parts for this problem
301: my (@parts) = &getpartlist($url);
302:
303: $request->print("<h2><font color=\"#339966\">Manual Grading</font></h2>");
304:
305: #start the form
306: $result = '<form action="/adm/grades" method="post">'."\n".
307: '<input type="hidden" name="symb" value="'.$symb.'"/>'."\n".
308: '<input type="hidden" name="url" value="'.$url.'"/>'."\n".
309: '<input type="hidden" name="command" value="editgrades" />'."\n".
310: '<input type="submit" name="submit" value="Submit Changes" />'.
311: "\n".'<table border=0><tr><td bgcolor="#999999">'."\n".
312: '<table border=0>'."\n".
313: '<tr><td bgcolor='.$headerclr.'>UserId</td><td bgcolor='.
314: $headerclr.'>Domain</td>'."\n";
315: foreach my $part (@parts) {
316: my $display = &Apache::lonnet::metadata($url,$part.'.display');
317: if (!$display) {
318: $display = &Apache::lonnet::metadata($url,$part.'.name'); }
319: $result .= '<td bgcolor='.$headerclr.'>'.$display.'</td>'."\n";
320: }
321: $result .= "</tr>";
322:
323: #get info for each student
324: foreach my $student ( sort(@{ $classlist{'allids'} }) ) {
325: $result .= &viewstudentgrade($url,$symb,$ENV{'request.course.id'},
326: $student,@parts);
327: }
328: $result .= '</table></td></tr></table><input type="submit" name="submit"'.
329: 'value="Submit Changes" /></form>';
330: return $result;
331: }
332:
333: # ================================================================= Edit grades
334: sub editgrades {
335: my ($request) = @_;
336: my $result='';
337:
338: my $symb = $ENV{'form.symb'};
339: if ($symb eq '') {
340: $request->print("Unable to handle ambiguous references:$symb:".
341: $ENV{'form.url'});
342: return '';
343: }
344: my $url = $ENV{'form.url'};
345: #get classlist
346: my ($cdom,$cnum) = split(/_/,$ENV{'request.course.id'});
347: my $chome = $ENV{"course.$ENV{'request.course.id'}.home"};
348: #print "Found $cdom:$cnum:$chome<br />";
349: my (%classlist) = &getclasslist($cdom,$cnum,$chome,'0');
350:
351: #get list of parts for this problem
352: my (@parts) = &getpartlist($url);
353:
354: $result .= '<form action="/adm/grades" method="post">'."\n".
355: '<input type="hidden" name="symb" value="'.$symb.'" />'."\n".
356: '<input type="hidden" name="url" value="'.$url.'" />'."\n".
357: '<input type="hidden" name="command" value="viewgrades" />'.
358: "\n".'<input type="submit" name="submit" value="See Grades" />'.
359: '<br />'."\n";
360:
361: foreach my $student ( sort(@{ $classlist{'allids'} }) ) {
362: $result .= &setstudentgrade($url,$symb,$ENV{'request.course.id'},
363: $student,@parts);
364: }
365:
366: $result .= '<input type="submit" name="submit" value="See Grades" />'.
367: '</table></form>';
368: return $result;
369: }
370:
371: # ================================================================= Send header
372: sub send_header {
373: my ($request) = @_;
374: $request->print(&Apache::lontexconvert::header());
375: # $request->print("
376: #<script>
377: #remotewindow=open('','homeworkremote');
378: #remotewindow.close();
379: #</script>");
380: $request->print('<body bgcolor="#FFFFFF">');
381: }
382:
383: # ================================================================= Send footer
384: sub send_footer {
385: my ($request) = @_;
386: $request->print('</body>');
387: $request->print(&Apache::lontexconvert::footer());
388: }
389:
390: # ===================================================================== Handler
391: sub handler {
392: my $request = $_[0];
393: if ( $ENV{'user.name'} eq 'albertel' ) {$Apache::lonxml::debug=1;}
394: else {$Apache::lonxml::debug=0;}
395: if ($ENV{'browser.mathml'}) {
396: $request->content_type('text/xml');
397: } else {
398: $request->content_type('text/html');
399: }
400: $request->send_http_header;
401: return OK if $request->header_only;
402: my $url = $ENV{'form.url'};
403: my $symb = $ENV{'form.symb'};
404: my $command = $ENV{'form.command'};
405:
406: &send_header($request);
407: if ($url eq '' && $symb eq '') {
408: $request->print("Non-Contextual Access Unsupported:$command:$url:");
409: } else {
410: $Apache::grades::viewgrades=&Apache::lonnet::allowed('vgr',
411: $ENV{'request.course.id'});
412: if ($command eq 'submission') {
413: $request->print(&listStudents($request))
414: if ($ENV{'form.student'} eq '');
415: $request->print(&submission($request))
416: if ($ENV{'form.student'} ne '');
417: } elsif ($command eq 'viewgrades') {
418: $request->print(&viewgrades($request));
419: } elsif ($command eq 'editgrades') {
420: $request->print(&editgrades($request));
421: } else {
422: $request->print("Unknown action:$command:");
423: }
424: }
425: &send_footer($request);
426: return OK;
427: }
428:
429: 1;
430:
431: __END__
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