1: # The LearningOnline Network with CAPA
2: #
3: # $Id: lonstatistics.pm,v 1.113 2005/02/01 15:15:28 matthew Exp $
4: #
5: # Copyright Michigan State University Board of Trustees
6: #
7: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
8: #
9: # LON-CAPA is free software; you can redistribute it and/or modify
10: # it under the terms of the GNU General Public License as published by
11: # the Free Software Foundation; either version 2 of the License, or
12: # (at your option) any later version.
13: #
14: # LON-CAPA is distributed in the hope that it will be useful,
15: # but WITHOUT ANY WARRANTY; without even the implied warranty of
16: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17: # GNU General Public License for more details.
18: #
19: # You should have received a copy of the GNU General Public License
20: # along with LON-CAPA; if not, write to the Free Software
21: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22: #
23: # /home/httpd/html/adm/gpl.txt
24: #
25: # http://www.lon-capa.org/
26: #
27: # (Navigate problems for statistical reports
28: #
29: ###
30:
31: =pod
32:
33: =head1 NAME
34:
35: lonstatistics
36:
37: =head1 SYNOPSIS
38:
39: Main handler for statistics and chart.
40:
41: =over 4
42:
43: =cut
44:
45: package Apache::lonstatistics;
46:
47: use strict;
48: use Apache::Constants qw(:common :http);
49: use vars qw(
50: @FullClasslist
51: @Students
52: @Sections
53: @SelectedSections
54: %StudentData
55: @StudentDataOrder
56: @SelectedStudentData
57: $top_map
58: @Sequences
59: @SelectedMaps
60: @Assessments
61: $enrollment_status);
62:
63: use Apache::lonnet();
64: use Apache::lonhomework;
65: use Apache::loncommon;
66: use Apache::loncoursedata;
67: use Apache::lonhtmlcommon;
68: use Apache::lonmysql;
69: use Apache::lonlocal;
70: use Time::HiRes;
71: #
72: # Statistics Packages
73: use Apache::lonproblemanalysis();
74: use Apache::lonsubmissiontimeanalysis();
75: use Apache::loncorrectproblemplot();
76: use Apache::lonproblemstatistics();
77: use Apache::lonstudentassessment();
78: use Apache::lonpercentage;
79: use Apache::lonstudentsubmissions();
80: use Apache::lonsurveyreports();
81:
82: #######################################################
83: #######################################################
84:
85: =pod
86:
87: =item Package Variables
88:
89: =item @FullClasslist The full classlist
90:
91: =item @Students The students we are concerned with for this invocation
92:
93: =item @Sections The sections available in this class
94:
95: =item $curr_student The student currently being examined
96:
97: =item $prev_student The student previous in the classlist
98:
99: =item $next_student The student next in the classlist
100:
101: =over
102:
103: =cut
104:
105: #######################################################
106: #######################################################
107: #
108: # Classlist variables
109: #
110: my $curr_student;
111: my $prev_student;
112: my $next_student;
113:
114: #######################################################
115: #######################################################
116:
117: =pod
118:
119: =item &clear_classlist_variables()
120:
121: undef the following package variables:
122:
123: =over
124:
125: =item @FullClasslist
126:
127: =item @Students
128:
129: =item @Sections
130:
131: =item @SelectedSections
132:
133: =item %StudentData
134:
135: =item @StudentDataOrder
136:
137: =item @SelectedStudentData
138:
139: =item $curr_student
140:
141: =item $prev_student
142:
143: =item $next_student
144:
145: =back
146:
147: =cut
148:
149: #######################################################
150: #######################################################
151: sub clear_classlist_variables {
152: undef(@FullClasslist);
153: undef(@Students);
154: undef(@Sections);
155: undef(@SelectedSections);
156: undef(%StudentData);
157: undef(@SelectedStudentData);
158: undef($curr_student);
159: undef($prev_student);
160: undef($next_student);
161: }
162:
163: #######################################################
164: #######################################################
165:
166: =pod
167:
168: =item &PrepareClasslist()
169:
170: Build up the classlist information. The classlist information is kept in
171: the following package variables:
172:
173: =over
174:
175: =item @FullClasslist
176:
177: =item @Students
178:
179: =item @Sections
180:
181: =item @SelectedSections
182:
183: =item %StudentData
184:
185: =item @SelectedStudentData
186:
187: =item $curr_student
188:
189: =item $prev_student
190:
191: =item $next_student
192:
193: =back
194:
195: $curr_student, $prev_student, and $next_student may not be defined, depending
196: upon the calling context.
197:
198: =cut
199:
200: #######################################################
201: #######################################################
202: sub PrepareClasslist {
203: my %Sections;
204: &clear_classlist_variables();
205: #
206: # Retrieve the classlist
207: my $cid = $ENV{'request.course.id'};
208: my $cdom = $ENV{'course.'.$cid.'.domain'};
209: my $cnum = $ENV{'course.'.$cid.'.num'};
210: my ($classlist,$field_names) = &Apache::loncoursedata::get_classlist($cid,
211: $cdom,$cnum);
212: if (exists($ENV{'form.Section'})) {
213: if (ref($ENV{'form.Section'})) {
214: @SelectedSections = @{$ENV{'form.Section'}};
215: } elsif ($ENV{'form.Section'} !~ /^\s*$/) {
216: @SelectedSections = ($ENV{'form.Section'});
217: }
218: }
219: @SelectedSections = ('all') if (! @SelectedSections);
220: foreach (@SelectedSections) {
221: if ($_ eq 'all') {
222: @SelectedSections = ('all');
223: }
224: }
225: #
226: # Deal with instructors with restricted section access
227: if ($ENV{'request.course.sec'} !~ /^\s*$/) {
228: @SelectedSections = ($ENV{'request.course.sec'});
229: }
230: #
231: # Set up %StudentData
232: @StudentDataOrder = qw/fullname username domain id section status comments/;
233: foreach my $field (@StudentDataOrder) {
234: $StudentData{$field}->{'title'} = &mt($field);
235: $StudentData{$field}->{'base_width'} = length(&mt($field));
236: $StudentData{$field}->{'width'} =
237: $StudentData{$field}->{'base_width'};
238: }
239: #
240: # get the status requested
241: $enrollment_status = 'Active';
242: $enrollment_status = $ENV{'form.Status'} if (exists($ENV{'form.Status'}));
243: #
244: # Process the classlist
245: while (my ($student,$student_data) = each (%$classlist)) {
246: my $studenthash = ();
247: for (my $i=0; $i< scalar(@$field_names);$i++) {
248: my $field = $field_names->[$i];
249: # Store the data
250: $studenthash->{$field}=$student_data->[$i];
251: # Keep track of the width of the fields
252: next if (! exists($StudentData{$field}));
253: my $length = length($student_data->[$i]);
254: if ($StudentData{$field}->{'width'} < $length) {
255: $StudentData{$field}->{'width'} = $length;
256: }
257: }
258: push (@FullClasslist,$studenthash);
259: #
260: # Build up a list of sections
261: my $section = $studenthash->{'section'};
262: if (! defined($section) || $section =~/^\s*$/ || $section == -1) {
263: $studenthash->{'section'} = 'none';
264: $section = $studenthash->{'section'};
265: }
266: $Sections{$section}++;
267: #
268: # Only put in the list those students we are interested in
269: foreach my $sect (@SelectedSections) {
270: if ( (($sect eq 'all') ||
271: ($section eq $sect)) &&
272: (($studenthash->{'status'} eq $enrollment_status) ||
273: ($enrollment_status eq 'Any'))
274: ){
275: push (@Students,$studenthash);
276: last;
277: }
278: }
279: }
280: #
281: # Put the consolidated section data in the right place
282: if ($ENV{'request.course.sec'} !~ /^\s*$/) {
283: @Sections = ($ENV{'request.course.sec'});
284: } else {
285: @Sections = sort {$a cmp $b} keys(%Sections);
286: unshift(@Sections,'all'); # Put 'all' at the front of the list
287: }
288: #
289: # Sort the Students
290: my $sortby = 'fullname';
291: $sortby = $ENV{'form.sort'} if (exists($ENV{'form.sort'}));
292: my @TmpStudents = sort { $a->{$sortby} cmp $b->{$sortby} ||
293: $a->{'fullname'} cmp $b->{'fullname'} } @Students;
294: @Students = @TmpStudents;
295: #
296: # Now deal with that current student thing....
297: $curr_student = undef;
298: if (exists($ENV{'form.SelectedStudent'})) {
299: my ($current_uname,$current_dom) =
300: split(':',$ENV{'form.SelectedStudent'});
301: my $i;
302: for ($i = 0; $i<=$#Students; $i++) {
303: next if (($Students[$i]->{'username'} ne $current_uname) ||
304: ($Students[$i]->{'domain'} ne $current_dom));
305: $curr_student = $Students[$i];
306: last; # If we get here, we have our student.
307: }
308: if (defined($curr_student)) {
309: if ($i == 0) {
310: $prev_student = undef;
311: } else {
312: $prev_student = $Students[$i-1];
313: }
314: if ($i == $#Students) {
315: $next_student = undef;
316: } else {
317: $next_student = $Students[$i+1];
318: }
319: }
320: }
321: #
322: if (exists($ENV{'form.StudentData'})) {
323: if (ref($ENV{'form.StudentData'}) eq 'ARRAY') {
324: @SelectedStudentData = @{$ENV{'form.StudentData'}};
325: } else {
326: @SelectedStudentData = ($ENV{'form.StudentData'});
327: }
328: } else {
329: @SelectedStudentData = ('username');
330: }
331: foreach (@SelectedStudentData) {
332: if ($_ eq 'all') {
333: @SelectedStudentData = ('all');
334: last;
335: }
336: }
337: #
338: return;
339: }
340:
341:
342: #######################################################
343: #######################################################
344:
345: =pod
346:
347: =item get_students
348:
349: Returns a list of the selected students
350:
351: =cut
352:
353: #######################################################
354: #######################################################
355: sub get_students {
356: if (! @Students) {
357: &PrepareClasslist()
358: }
359: return @Students;
360: }
361:
362: #######################################################
363: #######################################################
364:
365: =pod
366:
367: =item ¤t_student()
368:
369: Returns a pointer to a hash containing data about the currently
370: selected student.
371:
372: =cut
373:
374: #######################################################
375: #######################################################
376: sub current_student {
377: return $curr_student;
378: }
379:
380: #######################################################
381: #######################################################
382:
383: =pod
384:
385: =item &previous_student()
386:
387: Returns a pointer to a hash containing data about the student prior
388: in the list of students. Or something.
389:
390: =cut
391:
392: #######################################################
393: #######################################################
394: sub previous_student {
395: return $prev_student;
396: }
397:
398: #######################################################
399: #######################################################
400:
401: =pod
402:
403: =item &next_student()
404:
405: Returns a pointer to a hash containing data about the next student
406: to be viewed.
407:
408: =cut
409:
410: #######################################################
411: #######################################################
412: sub next_student {
413: return $next_student;
414: }
415:
416: #######################################################
417: #######################################################
418:
419: =pod
420:
421: =item &clear_sequence_variables()
422:
423: =cut
424:
425: #######################################################
426: #######################################################
427: sub clear_sequence_variables {
428: undef($top_map);
429: undef(@Sequences);
430: undef(@Assessments);
431: }
432:
433: #######################################################
434: #######################################################
435:
436: =pod
437:
438: =item &SetSelectedMaps($elementname)
439:
440: Sets the @SelectedMaps array from $ENV{'form.'.$elementname};
441:
442: =cut
443:
444: #######################################################
445: #######################################################
446: sub SetSelectedMaps {
447: my $elementname = shift;
448: if (exists($ENV{'form.'.$elementname})) {
449: if (ref($ENV{'form.'.$elementname})) {
450: @SelectedMaps = @{$ENV{'form.'.$elementname}};
451: } else {
452: @SelectedMaps = ($ENV{'form.'.$elementname});
453: }
454: } else {
455: @SelectedMaps = ('all');
456: }
457: }
458:
459:
460: #######################################################
461: #######################################################
462:
463: =pod
464:
465: =item &Sequences_with_Assess()
466:
467: Returns an array containing the subset of @Sequences which contain
468: assessments.
469:
470: =cut
471:
472: #######################################################
473: #######################################################
474: sub Sequences_with_Assess {
475: my ($mode) = @_;
476: $mode = 'selected' if (! defined($mode));
477: my @Sequences_to_Show;
478: foreach my $sequence (@Sequences) {
479: next if ($sequence->{'num_assess'} < 1);
480: if ($mode eq 'all') {
481: push (@Sequences_to_Show,$sequence);
482: } elsif ($mode eq 'selected') {
483: foreach my $map_symb (@SelectedMaps) {
484: if ($sequence->{'symb'} eq $map_symb || $map_symb eq 'all'){
485: push (@Sequences_to_Show,$sequence);
486: last; # Only put it in once
487: }
488: }
489: }
490:
491: }
492: return @Sequences_to_Show;
493: }
494:
495: #######################################################
496: #######################################################
497:
498: =pod
499:
500: =item &PrepareCourseData($r)
501:
502: =cut
503:
504: #######################################################
505: #######################################################
506: sub PrepareCourseData {
507: my ($r) = @_;
508: &clear_sequence_variables();
509: my ($top,$sequences,$assessments) =
510: &Apache::loncoursedata::get_sequence_assessment_data();
511: if (! defined($top) || ! ref($top)) {
512: # There has been an error, better report it
513: &Apache::lonnet::logthis('top is undefined');
514: return;
515: }
516: $top_map = $top if (ref($top));
517: @Sequences = @{$sequences} if (ref($sequences) eq 'ARRAY');
518: @Assessments = @{$assessments} if (ref($assessments) eq 'ARRAY');
519: return;
520: }
521:
522: #######################################################
523: #######################################################
524:
525: =pod
526:
527: =item &log_sequence($sequence,$recursive,$padding)
528:
529: Write data about the sequence to a logfile. If $recursive is not
530: undef the data is written recursively. $padding is used for recursive
531: calls.
532:
533: =cut
534:
535: #######################################################
536: #######################################################
537: sub log_sequence {
538: my ($seq,$recursive,$padding) = @_;
539: $padding = '' if (! defined($padding));
540: if (ref($seq) ne 'HASH') {
541: &Apache::lonnet::logthis('log_sequence passed bad sequnce');
542: return;
543: }
544: &Apache::lonnet::logthis($padding.'sequence '.$seq->{'title'});
545: while (my($key,$value) = each(%$seq)) {
546: next if ($key eq 'contents');
547: if (ref($value) eq 'ARRAY') {
548: for (my $i=0;$i< scalar(@$value);$i++) {
549: &Apache::lonnet::logthis($padding.$key.'['.$i.']='.
550: $value->[$i]);
551: }
552: } else {
553: &Apache::lonnet::logthis($padding.$key.'='.$value);
554: }
555: }
556: if (defined($recursive)) {
557: &Apache::lonnet::logthis($padding.'-'x20);
558: &Apache::lonnet::logthis($padding.'contains:');
559: foreach my $item (@{$seq->{'contents'}}) {
560: if ($item->{'type'} eq 'container') {
561: &log_sequence($item,$recursive,$padding.' ');
562: } else {
563: &Apache::lonnet::logthis($padding.'title = '.$item->{'title'});
564: while (my($key,$value) = each(%$item)) {
565: next if ($key eq 'title');
566: if (ref($value) eq 'ARRAY') {
567: for (my $i=0;$i< scalar(@$value);$i++) {
568: &Apache::lonnet::logthis($padding.$key.'['.$i.']='.
569: $value->[$i]);
570: }
571: } else {
572: &Apache::lonnet::logthis($padding.$key.'='.$value);
573: }
574: }
575: }
576: }
577: &Apache::lonnet::logthis($padding.'end contents of '.$seq->{'title'});
578: &Apache::lonnet::logthis($padding.'-'x20);
579: }
580: return;
581: }
582:
583: ##############################################
584: ##############################################
585:
586: =pod
587:
588: =item &StudentDataSelect($elementname,$status,$numvisible,$selected)
589:
590: Returns html for a selection box allowing the user to choose one (or more)
591: of the fields of student data available (fullname, username, id, section, etc)
592:
593: =over 4
594:
595: =item $elementname The name of the HTML form element
596:
597: =item $status 'multiple' or 'single' selection box
598:
599: =item $numvisible The number of options to be visible
600:
601: =back
602:
603: =cut
604:
605: ##############################################
606: ##############################################
607: sub StudentDataSelect {
608: my ($elementname,$status,$numvisible)=@_;
609: if ($numvisible < 1) {
610: return;
611: }
612: #
613: # Build the form element
614: my $Str = "\n";
615: $Str .= '<select name="'.$elementname.'" ';
616: if ($status ne 'single') {
617: $Str .= 'multiple="true" ';
618: }
619: $Str .= 'size="'.$numvisible.'" >'."\n";
620: #
621: # Deal with 'all'
622: $Str .= ' <option value="all" ';
623: foreach (@SelectedStudentData) {
624: if ($_ eq 'all') {
625: $Str .= 'selected ';
626: last;
627: }
628: }
629: $Str .= ">all</option>\n";
630: #
631: # Loop through the student data fields
632: foreach my $item (@StudentDataOrder) {
633: $Str .= ' <option value="'.$item.'" ';
634: foreach (@SelectedStudentData) {
635: if ($item eq $_ ) {
636: $Str .= 'selected ';
637: last;
638: }
639: }
640: $Str .= '>'.$item."</option>\n";
641: }
642: $Str .= "</select>\n";
643: return $Str;
644: }
645:
646: ##############################################
647: ##############################################
648:
649: =pod
650:
651: =item &MapSelect($elementname,$status,$numvisible,$restriction)
652:
653: Returns html for a selection box allowing the user to choose one (or more)
654: of the sequences in the course. The values of the sequences are the symbs.
655: If the top sequence is selected, the value 'top' will result.
656:
657: =over 4
658:
659: =item $elementname The name of the HTML form element
660:
661: =item $status 'multiple' or 'single' selection box
662:
663: =item $numvisible The number of options to be visible
664:
665: =item $restriction Code reference to subroutine which returns true or
666: false. The code must expect a reference to a sequence data structure.
667:
668: =back
669:
670: =cut
671:
672: ##############################################
673: ##############################################
674: sub MapSelect {
675: my ($elementname,$status,$numvisible,$restriction)=@_;
676: if ($numvisible < 1) {
677: return;
678: }
679: #
680: # Set up array of selected items
681: &SetSelectedMaps($elementname);
682: #
683: # Set up the restriction call
684: if (! defined($restriction)) {
685: $restriction = sub { 1; };
686: }
687: #
688: # Build the form element
689: my $Str = "\n";
690: $Str .= '<select name="'.$elementname.'" ';
691: if ($status ne 'single') {
692: $Str .= 'multiple="true" ';
693: }
694: $Str .= 'size="'.$numvisible.'" >'."\n";
695: #
696: # Deal with 'all'
697: foreach (@SelectedMaps) {
698: if ($_ eq 'all') {
699: @SelectedMaps = ('all');
700: last;
701: }
702: }
703: #
704: # Put in option for 'all'
705: $Str .= ' <option value="all" ';
706: foreach (@SelectedMaps) {
707: if ($_ eq 'all') {
708: $Str .= 'selected ';
709: last;
710: }
711: }
712: $Str .= ">all</option>\n";
713: #
714: # Loop through the sequences
715: foreach my $seq (@Sequences) {
716: next if (! $restriction->($seq));
717: $Str .= ' <option value="'.$seq->{'symb'}.'" ';
718: foreach (@SelectedMaps) {
719: if ($seq->{'symb'} eq $_) {
720: $Str .= 'selected ';
721: last;
722: }
723: }
724: $Str .= '>'.$seq->{'title'}."</option>\n";
725: }
726: $Str .= "</select>\n";
727: return $Str;
728: }
729:
730: ##############################################
731: ##############################################
732:
733: =pod
734:
735: =item &SectionSelect($elementname,$status,$numvisible)
736:
737: Returns html for a selection box allowing the user to choose one (or more)
738: of the sections in the course.
739:
740: Uses the package variables @Sections and @SelectedSections
741: =over 4
742:
743: =item $elementname The name of the HTML form element
744:
745: =item $status 'multiple' or 'single' selection box
746:
747: =item $numvisible The number of options to be visible
748:
749: =back
750:
751: =cut
752:
753: ##############################################
754: ##############################################
755: sub SectionSelect {
756: my ($elementname,$status,$numvisible)=@_;
757: if ($numvisible < 1) {
758: return;
759: }
760: #
761: # Make sure we have the data we need to continue
762: if (! @Sections) {
763: &PrepareClasslist()
764: }
765: #
766: # Build the form element
767: my $Str = "\n";
768: $Str .= '<select name="'.$elementname.'" ';
769: if ($status ne 'single') {
770: $Str .= 'multiple="true" ';
771: }
772: $Str .= 'size="'.$numvisible.'" >'."\n";
773: #
774: # Loop through the sequences
775: foreach my $s (@Sections) {
776: $Str .= ' <option value="'.$s.'" ';
777: foreach (@SelectedSections) {
778: if ($s eq $_) {
779: $Str .= 'selected ';
780: last;
781: }
782: }
783: $Str .= '>'.$s."</option>\n";
784: }
785: $Str .= "</select>\n";
786: return $Str;
787: }
788:
789: ##################################################
790: ##################################################
791: sub DisplayClasslist {
792: my ($r)=@_;
793: &Apache::lonhtmlcommon::add_breadcrumb
794: ({text=>'Select One Student'});
795: #
796: # Output some of the standard interface components
797: my $Str;
798: $Str .= &Apache::lonhtmlcommon::breadcrumbs(undef,'Select One Student');
799: $Str .= '<p><table cellspacing="5">'."\n";
800: $Str .= '<tr>';
801: $Str .= '<th align="center"><b>'.&mt('Sections').'</b></th>';
802: $Str .= '<th align="center"><b>'.&mt('Enrollment Status').'</b></th>';
803: $Str .= '</tr>'.$/;
804: $Str .= '<tr>';
805: $Str .= '<td>'.
806: &Apache::lonstatistics::SectionSelect('Section','multiple',5).
807: '</td>';
808: $Str .= '<td>'.
809: &Apache::lonhtmlcommon::StatusOptions(undef,undef,5).
810: '</td>';
811:
812: $Str .= '</tr>'.$/;
813: $Str .= '</table></p>';
814: $Str .= '<input type="submit" name="selectstudent" value="'.
815: &mt('Update Display').'" />';
816: $r->print($Str);
817: $r->rflush();
818: #
819: my @Fields = ('fullname','username','domain','id','section','status');
820: #
821: $Str = '';
822: if (! @Students) {
823: if ($SelectedSections[0] eq 'all') {
824: if (lc($ENV{'form.Status'}) eq 'any') {
825: $Str .= '<h2>'.
826: &mt('There are no students in the course.').
827: '</h2>';
828: } elsif (lc($ENV{'form.Status'}) eq 'active') {
829: $Str .= '<h2>'.
830: &mt('There are no currently enrolled students in the course.').
831: '</h2>';
832: } elsif (lc($ENV{'form.Status'}) eq 'expired') {
833: $Str .= '<h2>'.
834: &mt('There are no previously enrolled students in the course.').
835: '</h2>';
836: }
837: } else {
838: my $sections;
839: if (lc($ENV{'form.Status'}) eq 'any') {
840: $Str .= '<h2>'.
841: &mt('There are no students in the selected sections.').
842: '</h2>';
843: } elsif (lc($ENV{'form.Status'}) eq 'active') {
844: $Str .= '<h2>'.
845: &mt('There are no currently enrolled students in the selected sections.').
846: '</h2>';
847: } elsif (lc($ENV{'form.Status'}) eq 'expired') {
848: $Str .= '<h2>'.
849: &mt('There are no previously enrolled students in the selected sections.').
850: '</h2>';
851: }
852: }
853: $Str.= '<a href="/adm/statistics?reportSelected=student_assessment">'.
854: &mt('Click here to return to the chart').'</a>';
855: $r->print($Str);
856: $r->rflush();
857: return;
858: }
859:
860: # "Click" is asinine but it is probably not my place to change the world.
861: $Str .= '<h2>Click on a students name or username to view their chart</h2>';
862: $Str .= '<table border="0"><tr><td bgcolor="#777777">'."\n";
863: $Str .= '<table border="0" cellpadding="3"><tr bgcolor="#e6ffff">'."\n";
864: foreach my $field (@Fields) {
865: $Str .= '<th><a href="/adm/statistics?'.
866: 'reportSelected=student_assessment&'.
867: 'selectstudent=1&'.
868: 'sort='.$field.'">'.&mt($field).
869: '</a></th>';
870: }
871: $Str .= '</tr>'."\n";
872: #
873: my $alternate = 0;
874: foreach my $student (@Students) { # @Students is a package variable
875: my $sname = $student->{'username'}.':'.$student->{'domain'};
876: if($alternate) {
877: $Str .= '<tr bgcolor="#ffffe6">';
878: } else {
879: $Str .= '<tr bgcolor="#ffffc6">';
880: }
881: $alternate = ($alternate + 1) % 2;
882: #
883: foreach my $field (@Fields) {
884: $Str .= '<td>';
885: if ($field eq 'fullname' || $field eq 'username') {
886: $Str .= '<a href="/adm/statistics?reportSelected=';
887: $Str .= &Apache::lonnet::escape('student_assessment');
888: $Str .= '&sort='.&Apache::lonnet::escape($ENV{'form.sort'});
889: $Str .= '&SelectedStudent=';
890: $Str .= &Apache::lonnet::escape($sname).'">';
891: $Str .= $student->{$field}.' ';
892: $Str .= '</a>';
893: } elsif ($field eq 'status') {
894: $Str .= &mt($student->{$field});
895: } else {
896: $Str .= $student->{$field};
897: }
898: $Str .= '</td>';
899: }
900: $Str .= "</tr>\n";
901: }
902: $Str .= '</table></td></tr></table>'."\n";
903: #
904: $r->print($Str);
905: $r->rflush();
906: #
907: return;
908: }
909:
910: ##############################################
911: ##############################################
912: sub CreateMainMenu {
913: #
914: # Define menu data
915: my @reports = ({ internal_name => 'problem_statistics',
916: name => &mt('Overall Problem Statistics'),
917: short_description =>
918: &mt('Student performance statistics on all problems.'),
919: },
920: { internal_name => 'problem_analysis',
921: name => &mt('Detailed Problem Analysis'),
922: short_description =>
923: &mt('Detailed statistics and graphs of student performance on problems.'),
924: },
925: { internal_name => 'submissiontime_analysis',
926: name => &mt('Submission Time Plots'),
927: short_description =>
928: &mt('Display and analysis of submission times on assessments.'),
929: },
930: { internal_name => 'student_submission_reports',
931: name => &mt('Student Submission Reports'),
932: short_description =>
933: &mt('Prepare reports of student submissions.'),
934: },
935: { internal_name => 'survey_reports',
936: name => &mt('Survey Reports'),
937: short_description =>
938: &mt('Prepare reports on survey results.'),
939: },
940: { internal_name => 'correct_problems_plot',
941: name => &mt('Correct Problems Plot'),
942: short_description =>
943: &mt('Display a histogram of student performance in the course.'),
944: },
945: # { internal_name => 'student_assessment',
946: # name => &mt('Problem Status Chart'),
947: # short_description =>
948: # &mt('Brief view of each students performance in course.'),
949: # },
950: # 'percentage' => 'Correct-problems Plot',
951: # 'activitylog' => 'Activity Log',
952: );
953: #
954: # Create the menu
955: my $Str;
956: $Str .= '<h2>'.&mt('Please select a report to generate').'</h2>';
957: foreach my $reportdata (@reports) {
958: $Str .=' <h3><a href="/adm/statistics?reportSelected='.
959: $reportdata->{'internal_name'}.'" >'.
960: $reportdata->{'name'}."</a></h3>\n";
961: $Str .= ' '.(' 'x8).$reportdata->{'short_description'}.
962: "\n";
963: }
964: $Str .="</dl>\n";
965: #
966: return $Str;
967: }
968:
969: ##############################################
970: ##############################################
971: sub handler {
972: my $r=shift;
973: my $c = $r->connection();
974: #
975: # Check for overloading
976: my $loaderror=&Apache::lonnet::overloaderror($r);
977: if ($loaderror) { return $loaderror; }
978: $loaderror=
979: &Apache::lonnet::overloaderror($r,
980: $ENV{'course.'.$ENV{'request.course.id'}.'.home'});
981: if ($loaderror) { return $loaderror; }
982: #
983: # Check for access
984: if (! &Apache::lonnet::allowed('vgr',$ENV{'request.course.id'})) {
985: $ENV{'user.error.msg'}=
986: $r->uri.":vgr:0:0:Cannot view grades for complete course";
987: if (! &Apache::lonnet::allowed('vgr',
988: $ENV{'request.course.id'}.'/'.$ENV{'request.course.sec'})) {
989: $ENV{'user.error.msg'}=
990: $r->uri.":vgr:0:0:Cannot view grades with given role";
991: return HTTP_NOT_ACCEPTABLE;
992: }
993: }
994: #
995: # Send the header
996: &Apache::loncommon::no_cache($r);
997: &Apache::loncommon::content_type($r,'text/html');
998: $r->send_http_header;
999: if ($r->header_only) { return OK; }
1000: #
1001: # Extract form elements from query string
1002: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1003: ['sort','reportSelected',
1004: 'SelectedStudent']);
1005: #
1006: # Give the LON-CAPA page header
1007: my $style = <<ENDSTYLE;
1008: <style type="text/css">
1009: ul.sub_studentans { list-style-type: none }
1010: ul.sub_correctans { list-style-type: none }
1011: tr.even { background-color: \#CCCCCC }
1012: td.essay { border: 1px solid gray; }
1013: </style>
1014: ENDSTYLE
1015: $r->print('<html><head><title>'.
1016: &mt('Course Statistics and Charts').
1017: '</title>'.$style.
1018: "</head>\n".
1019: &Apache::loncommon::bodytag('Course Statistics and Charts'));
1020: $r->rflush();
1021: #
1022: # Either print out a menu for them or send them to a report
1023: &Apache::lonhtmlcommon::clear_breadcrumbs();
1024: &Apache::lonhtmlcommon::add_breadcrumb({href=>'/adm/statistics',
1025: title=>'Statistics',
1026: text =>'Statistics',
1027: faq=>139,
1028: bug=>'Statistics and Charts'});
1029: if (! exists($ENV{'form.reportSelected'}) ||
1030: $ENV{'form.reportSelected'} eq '') {
1031: $r->print(&Apache::lonhtmlcommon::breadcrumbs
1032: (undef,&mt('Statistics Main Page')).
1033: &CreateMainMenu());
1034: } else {
1035: #
1036: if (! &Apache::lonmysql::verify_sql_connection()) {
1037: my $serveradmin = $r->dir_config('lonAdmEMail');
1038: $r->print('<h2><font color="Red">'.
1039: &mt('Unable to connect to database!').
1040: '</font></h2>');
1041: $r->print('<p>'.
1042: &mt('Please notify the server administrator ').
1043: '<b>'.$serveradmin.'</b></p>');
1044: $r->print('<p>'.
1045: &mt('Course Statistics and Charts cannot be '.
1046: 'retrieved until the database is restarted. '.
1047: 'Your data is intact but cannot be displayed '.
1048: 'at this time.').'</p>');
1049: $r->print('</body></html>');
1050: return;
1051: }
1052: #
1053: # Clean out the caches
1054: if (exists($ENV{'form.ClearCache'})) {
1055: &Apache::loncoursedata::delete_caches($ENV{'requres.course.id'});
1056: }
1057: #
1058: # Begin form output
1059: $r->print('<form name="Statistics" ');
1060: $r->print('method="post" action="/adm/statistics">');
1061: $r->rflush();
1062: #
1063: my $GoToPage = $ENV{'form.reportSelected'};
1064: #
1065: # Set up the statistics and chart environment
1066: &PrepareCourseData($r);
1067: #
1068: $r->print('<input type="hidden" name="reportSelected" value="'.
1069: $GoToPage.'">');
1070: if($GoToPage eq 'activitylog') {
1071: # &Apache::lonproblemstatistics::Activity();
1072: } elsif($GoToPage eq 'problem_statistics') {
1073: &Apache::lonhtmlcommon::add_breadcrumb
1074: ({href=>'/adm/statistics?reportselected=problem_statistics',
1075: text=>'Overall Problem Statistics'});
1076: &Apache::lonproblemstatistics::BuildProblemStatisticsPage($r,$c);
1077: } elsif($GoToPage eq 'problem_analysis') {
1078: &Apache::lonhtmlcommon::add_breadcrumb
1079: ({href=>'/adm/statistics?reportselected=problem_analysis',
1080: text=>'Detailed Problem Analysis'});
1081: &Apache::lonproblemanalysis::BuildProblemAnalysisPage($r,$c);
1082: } elsif($GoToPage eq 'submissiontime_analysis') {
1083: &Apache::lonhtmlcommon::add_breadcrumb
1084: ({href=>
1085: '/adm/statistics?reportselected=submissiontime_analysis',
1086: text=>'Submission Time Plots'});
1087: &Apache::lonsubmissiontimeanalysis::BuildSubmissionTimePage($r,$c);
1088: } elsif($GoToPage eq 'student_submission_reports') {
1089: &Apache::lonhtmlcommon::add_breadcrumb
1090: ({href=>
1091: '/adm/statistics?reportselected=student_submission_reports',
1092: text=>'Student Submission Reports'});
1093: &Apache::lonstudentsubmissions::BuildStudentSubmissionsPage($r,$c);
1094: } elsif($GoToPage eq 'survey_reports') {
1095: &Apache::lonhtmlcommon::add_breadcrumb
1096: ({href=>
1097: '/adm/statistics?reportselected=survey_reports',
1098: text=>'Survey Reports'});
1099: &Apache::lonsurveyreports::BuildSurveyReportsPage($r,$c);
1100: } elsif($GoToPage eq 'correct_problems_plot') {
1101: &Apache::lonhtmlcommon::add_breadcrumb
1102: ({href=>'/adm/statistics?reportselected=correct_problems_plot',
1103: text=>'Correct Problems Plot'});
1104: &Apache::loncorrectproblemplot::BuildCorrectProblemsPage($r,$c);
1105: } elsif($GoToPage eq 'student_assessment') {
1106: &Apache::lonhtmlcommon::clear_breadcrumbs();
1107: &Apache::lonhtmlcommon::add_breadcrumb
1108: ({href=>'/adm/statistics?reportselected=student_assessment',
1109: text=>'Chart'});
1110: &Apache::lonstudentassessment::BuildStudentAssessmentPage($r,$c);
1111: }
1112: #
1113: $r->print("</form>\n");
1114: }
1115: $r->print("</body>\n</html>\n");
1116: $r->rflush();
1117: #
1118: return OK;
1119: }
1120:
1121: 1;
1122:
1123: #######################################################
1124: #######################################################
1125:
1126: =pod
1127:
1128: =back
1129:
1130: =cut
1131:
1132: #######################################################
1133: #######################################################
1134:
1135: __END__
1136:
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