1: # The LearningOnline Network with CAPA
2: #
3: # $Id: lonstathelpers.pm,v 1.76.2.5.2.1 2023/09/08 00:52:36 raeburn 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: ####################################################
28: ####################################################
29:
30: =pod
31:
32: =head1 NAME
33:
34: Apache::lonstathelpers - helper routines used by statistics
35:
36: =head1 SYNOPSIS
37:
38: This module provides a place to consolidate much of the statistics
39: routines that are needed across multiple statistics functions.
40:
41: =head1 OVERVIEW
42:
43: =over 4
44:
45: =cut
46:
47: ####################################################
48: ####################################################
49: package Apache::lonstathelpers;
50:
51: use strict;
52: use Apache::lonnet;
53: use Apache::loncommon();
54: use Apache::lonhtmlcommon();
55: use Apache::loncoursedata();
56: use Apache::lonstatistics;
57: use Apache::lonlocal;
58: use HTML::Entities();
59: use Time::Local();
60: use Spreadsheet::WriteExcel();
61: use GDBM_File;
62: use Storable qw(freeze thaw);
63: use lib '/home/httpd/lib/perl/';
64: use LONCAPA;
65:
66:
67: ####################################################
68: ####################################################
69:
70: =pod
71:
72: =item &render_resource($resource)
73:
74: Input: a navmaps resource
75:
76: Retunrs: a scalar containing html for a rendering of the problem
77: within a table.
78:
79: =cut
80:
81: ####################################################
82: ####################################################
83: sub render_resource {
84: my ($resource) = @_;
85: ##
86: ## Render the problem
87: my ($base) = ($resource->src =~ m|^(.*/)[^/]*$|);
88: $base=&Apache::lonnet::absolute_url().$base;
89: my ($src,$symb)=($resource->link,&escape($resource->shown_symb));
90: my $rendered_problem = &Apache::lonnet::ssi_body($src.'?symb='.$symb);
91: $rendered_problem =~ s/<\s*form\s*/<nop /g;
92: $rendered_problem =~ s|(<\s*/form\s*>)|<\/nop>|g;
93: return '<div class="LC_Box">'.
94: '<h4 class="LC_hcell">'.&mt('Problem').'</h4>'.
95: '<base href="'.$base.'" />'.$rendered_problem.
96: '</div>';
97: }
98:
99: ####################################################
100: ####################################################
101:
102: =pod
103:
104: =item &get_resources
105:
106: =cut
107:
108: ####################################################
109: ####################################################
110: sub get_resources {
111: my ($navmap,$sequence,$include_tools) = @_;
112: my @resources;
113: if ($include_tools) {
114: @resources = $navmap->retrieveResources($sequence,
115: sub { shift->is_gradable(); },
116: 0,0,0);
117: } else {
118: @resources = $navmap->retrieveResources($sequence,
119: sub { shift->is_problem(); },
120: 0,0,0);
121: }
122: return @resources;
123: }
124:
125: ####################################################
126: ####################################################
127:
128: =pod
129:
130: =item &problem_selector($AcceptedResponseTypes)
131:
132: Input: scalar containing regular expression which matches response
133: types to show. '.' will yield all, '(option|radiobutton)' will match
134: all option response and radiobutton problems.
135:
136: Returns: A string containing html for a table which lists the sequences
137: and their contents. A radiobutton is provided for each problem.
138: Skips 'survey' problems.
139:
140: =cut
141:
142: ####################################################
143: ####################################################
144: sub problem_selector {
145: my ($AcceptedResponseTypes,$sequence_addendum,$symbmode,$all,$prefix,
146: $byres,$include_tools,$smallbox,$onclick) = @_;
147: # all: also make sequences selectable
148: # prefix: prefix for all form names
149: # byres: radiobutton shown per resource
150: # include_tools: external tools included
151: # smallbox: use smaller box
152: # onclick: javascript to execute when clicked
153: my $Str;
154: my $jsadd='';
155: if ($onclick) {
156: $jsadd="onclick='$onclick'";
157: }
158: $Str = &Apache::loncommon::start_scrollbox(($smallbox?'420px':'620px'),
159: ($smallbox?'400px':'600px'),
160: ($smallbox?'60px':'300px')).
161: &Apache::loncommon::start_data_table();
162: my $rb_count =0;
163: my ($navmap,@sequences) =
164: &Apache::lonstatistics::selected_sequences_with_assessments('all');
165: return $navmap if (! ref($navmap)); # error
166: foreach my $seq (@sequences) {
167: my $seq_str = '';
168: foreach my $res (&get_resources($navmap,$seq,$include_tools)) {
169: if ($res->src() eq '/res/lib/templates/simpleproblem.problem') {
170: next if (grep(/^placeholder$/,@{$res->parts}));
171: }
172: my $title = $res->compTitle;
173: if (! defined($title) || $title eq '') {
174: ($title) = ($res->src =~ m:/([^/]*)$:);
175: }
176: my $totalresps = 0;
177: if ($byres) {
178: foreach my $part (@{$res->parts}) {
179: $totalresps += scalar($res->responseIds($part));
180: }
181: my $value = &HTML::Entities::encode($res->symb(),'<>&"');
182: my $checked;
183: if ($env{'form.problemchoice'} eq $res->symb()) {
184: $checked = ' checked="checked"';
185: }
186: my $rowspan;
187: if ($totalresps > 1) {
188: $rowspan = ' rowspan="'.$totalresps.'"';
189: }
190: $seq_str .= &Apache::loncommon::start_data_table_row().
191: '<td'.$rowspan.' style="vertical-align:top">'.
192: '<label><input type="radio" name="symb" value="'.$value.'"'.$checked.' />'.
193: $title.'</label>';
194: my $link = $res->link.'?symb='.&escape($res->shown_symb);
195: $seq_str .= (' 'x2).
196: '<a target="preview" href="'.$link.'">'.&mt('view').'</a></td>';
197: }
198: my %partsseen;
199: foreach my $part (@{$res->parts}) {
200: my (@response_ids,@response_types);
201: if (($include_tools) && ($res->is_tool)) {
202: @response_ids = ();
203: @response_types = ('tool');
204: } else {
205: @response_ids = $res->responseIds($part);
206: @response_types = $res->responseType($part);
207: }
208: for (my $i=0;$i<scalar(@response_types);$i++){
209: my $respid = $response_ids[$i];
210: my $resptype = $response_types[$i];
211: if ($resptype =~ m/$AcceptedResponseTypes/) {
212: if ($byres) {
213: if (exists($partsseen{$part})) {
214: $seq_str .= &Apache::loncommon::continue_data_table_row();
215: } else {
216: my $parttitle = $part;
217: if ($part eq '0') {
218: $parttitle = '';
219: }
220: if ($parttitle ne '') {
221: $parttitle = (' 'x2).&mt('part').': '.$parttitle;
222: }
223: if (keys(%partsseen)) {
224: $seq_str .= &Apache::loncommon::continue_data_table_row();
225: }
226: unless ($partsseen{$part}) {
227: my $resprowspan;
228: if (scalar(@response_ids) > 1) {
229: $resprowspan = ' rowspan="'.scalar(@response_ids).'"';
230: }
231: $seq_str .= '<td'.$resprowspan.' style="vertical-align:top">'.
232: $parttitle.'</td>';
233: $partsseen{$part} = scalar(@response_ids);
234: }
235: }
236: $seq_str .= '<td>'.$resptype;
237: if (scalar(@response_ids) > 1) {
238: $seq_str .= ' '.&mt('id').': '.$respid;
239: }
240: $seq_str .= '</td>'. &Apache::loncommon::end_data_table_row()."\n";
241: } else {
242: my $value = &make_target_id({symb=>$res->symb,
243: part=>$part,
244: respid=>$respid,
245: resptype=>$resptype});
246: my $checked = '';
247: if ($env{'form.problemchoice'} eq $value) {
248: $checked = ' checked="checked"';
249: }
250: $seq_str .= &Apache::loncommon::start_data_table_row().
251: ($symbmode?
252: '<td><input type="radio" id="'.$prefix.$rb_count.'" name="'.$prefix.'symb" value="'.&HTML::Entities::encode($res->symb,'<>&"').'" '.$checked.' '.
253: $jsadd.
254: ' /></td>'
255: :qq{<td><input type="radio" id="$rb_count" name="problemchoice" value="$value"$checked /></td>}).
256: '<td><label for="'.$prefix.$rb_count.'">'.$resptype.'</label></td>'.
257: '<td><label for="'.$prefix.$rb_count.'">'.$title.'</label>';
258: if (scalar(@response_ids) > 1) {
259: $seq_str .= &mt('response').' '.$respid;
260: }
261: my $link = $res->link.'?symb='.&escape($res->shown_symb);
262: $seq_str .= (' 'x2).
263: '<a target="preview" href="'.$link.'">'.&mt('view').'</a>';
264: $seq_str .= "</td>". &Apache::loncommon::end_data_table_row()."\n";
265: }
266: $rb_count++;
267: }
268: }
269: }
270: }
271: if ($seq_str ne '') {
272: if ($byres) {
273: $Str .= &Apache::loncommon::start_data_table_header_row().
274: '<th colspan="3">'.$seq->compTitle.'</th>'.
275: &Apache::loncommon::end_data_table_header_row().
276: $seq_str;
277: } else {
278: $Str .= &Apache::loncommon::start_data_table_header_row().
279: '<th colspan="3">'.
280: ($all?'<input type="radio" id="'.$prefix.'s'.$rb_count.'" name="'.$prefix.'symb" value="'.&HTML::Entities::encode($seq->symb,'<>&').'" '.$jsadd.' />':'').
281: $seq->compTitle.'</th>'.
282: &Apache::loncommon::end_data_table_header_row()."\n".$seq_str;
283: if (defined($sequence_addendum)) {
284: $Str .= &Apache::loncommon::start_data_table_header_row().
285: ('<td> </td>'x2).
286: '<td align="right">'.$sequence_addendum.'</td>'.
287: &Apache::loncommon::end_data_table_header_row()."\n";
288: }
289: }
290: }
291: }
292: $Str .= &Apache::loncommon::end_data_table().&Apache::loncommon::end_scrollbox()."\n";
293: if (!$rb_count) {
294: if ($byres) {
295: $Str = '<p class="LC_info">'.&mt('No gradable problems found').'</p>';
296: } elsif ($AcceptedResponseTypes eq '.') {
297: $Str = '<p class="LC_info">'.&mt('No problems found').'</p>';
298: } else {
299: $Str = '<p class="LC_info">'.&mt('No analyzable problems found').'</p>';
300: }
301: }
302: return $Str;
303: }
304:
305: ####################################################
306: ####################################################
307:
308: =pod
309:
310: =item &MultipleProblemSelector($navmap,$selected,$inputname)
311:
312: Generate HTML with checkboxes for problem selection.
313:
314: Input:
315:
316: $navmap: a navmap object. If undef, navmaps will be called to create a
317: new object.
318:
319: $selected: Scalar, Array, or hash reference of currently selected items.
320:
321: $inputname: The name of the form elements to use for the checkboxs.
322:
323: Returns: A string containing html for a table which lists the sequences
324: and their contents. A checkbox is provided for each problem.
325:
326: =cut
327:
328: ####################################################
329: ####################################################
330: sub MultipleProblemSelector {
331: my ($navmap,$inputname,$formname,$anoncounter)=@_;
332: my $cid = $env{'request.course.id'};
333: my $Str;
334: # Massage the input as needed.
335: if (! defined($navmap)) {
336: $navmap = Apache::lonnavmaps::navmap->new();
337: if (! defined($navmap)) {
338: $Str .= '<div class="LC_error">'
339: .&mt('Error: cannot process course structure')
340: .'</div>';
341: return $Str;
342: }
343: }
344: my $selected = {map { ($_,1) } (&get_selected_symbs($inputname))};
345: # Header
346: $Str .= <<"END";
347: <script type="text/javascript" language="JavaScript">
348: function checkall(value,seqid) {
349: for (i=0; i<document.forms.$formname.elements.length; i++) {
350: ele = document.forms.$formname.elements[i];
351: if (ele.name == '$inputname') {
352: if (seqid != null) {
353: itemid = document.forms.$formname.elements[i].id;
354: thing = itemid.split(':');
355: if (thing[0] == seqid) {
356: document.forms.$formname.elements[i].checked=value;
357: }
358: } else {
359: document.forms.$formname.elements[i].checked=value;
360: }
361: }
362: }
363: }
364: </script>
365: END
366: my $checkanonjs = <<"END";
367:
368: <script type="text/javascript" language="JavaScript">
369: function checkanon() {
370: return true;
371: }
372: </script>
373:
374: END
375: if (ref($anoncounter) eq 'HASH') {
376: if (keys(%{$anoncounter}) > 0) {
377: my $anonwarning = &mt('Your selection includes both problems with and without anonymous submissions.')."\n".&mt('You must select either only anonymous or only named problems.')."\n\n".&mt('If a selection contains both anonymous and named parts,[_1]use the Anonymous/Named buttons to ensure selections will be either all anonymous[_1]or all named.',"\n");
378: &js_escape(\$anonwarning);
379: $checkanonjs = <<"END";
380:
381: <script type="text/javascript" language="JavaScript">
382: function checkanon() {
383: anoncount = 0;
384: namedcount = 0;
385: for (i=0; i<document.forms.$formname.elements.length; i++) {
386: ele = document.forms.$formname.elements[i];
387: if (ele.name == '$inputname') {
388: itemid = document.forms.$formname.elements[i].id;
389: if (document.forms.$formname.elements[i].checked) {
390: anonid = 'anonymous_'+itemid;
391: mixid = 'mixed_'+itemid;
392: anonele = document.getElementById(anonid);
393: mixele = document.getElementById(mixid);
394: if (anonele.value > 0) {
395: if (mixele.value == 'none') {
396: anoncount ++;
397: } else {
398: if (mixele.value == '0') {
399: if (mixele.checked) {
400: anoncount ++;
401: } else {
402: namedcount ++;
403: }
404: } else {
405: namedcount ++;
406: }
407: }
408: } else {
409: namedcount ++;
410: }
411: }
412: }
413: }
414: if (anoncount > 0 && namedcount > 0) {
415: alert("$anonwarning");
416: return false;
417: }
418: }
419: </script>
420:
421: END
422: }
423: }
424: $Str .= $checkanonjs.
425: '<a href="javascript:checkall(true)">'.&mt('Select All').'</a>'.
426: (' 'x4).
427: '<a href="javascript:checkall(false)">'.&mt('Unselect All').'</a>';
428: $Str .= $/.'<table>'.$/;
429: my $iterator = $navmap->getIterator(undef, undef, undef, 1);
430: my $sequence_string;
431: my $seq_id = 0;
432: my @Accumulator = (&new_accumulator($env{'course.'.$cid.'.description'},
433: '',
434: '',
435: $seq_id++,
436: $inputname));
437: my @Sequence_Data;
438: while (my $curRes = $iterator->next()) {
439: if ($curRes == $iterator->END_MAP) {
440: if (ref($Accumulator[-1]) eq 'CODE') {
441: my $old_accumulator = pop(@Accumulator);
442: push(@Sequence_Data,&{$old_accumulator}());
443: }
444: } elsif ($curRes == $iterator->BEGIN_MAP) {
445: # Not much to do here.
446: }
447: next if (! ref($curRes));
448: if ($curRes->is_map) {
449: push(@Accumulator,&new_accumulator($curRes->compTitle,
450: $curRes->src,
451: $curRes->symb,
452: $seq_id++,
453: $inputname));
454: } elsif ($curRes->is_problem) {
455: my $anonpart = 0;
456: my $namedpart = 0;
457: my @parts = @{$curRes->parts()};
458: if (ref($anoncounter) eq 'HASH') {
459: if (keys(%{$anoncounter}) > 0) {
460: my @parts = @{$curRes->parts()};
461: my $symb = $curRes->symb();
462: foreach my $part (@parts) {
463: if ((exists($anoncounter->{$symb."\0".$part})) ||
464: $curRes->is_anonsurvey($part)) {
465: $anonpart ++;
466: } else {
467: $namedpart ++
468: }
469: }
470: }
471: }
472: if (@Accumulator && $Accumulator[-1] ne '') {
473: &{$Accumulator[-1]}($curRes,
474: exists($selected->{$curRes->symb}),
475: $anonpart,$namedpart);
476: }
477: }
478: }
479: my $course_seq = pop(@Sequence_Data);
480: foreach my $seq ($course_seq,@Sequence_Data) {
481: #my $seq = pop(@Sequence_Data);
482: next if (! defined($seq) || ref($seq) ne 'HASH');
483: $Str.= '<tr><td colspan="2">'.
484: '<b>'.$seq->{'title'}.'</b>'.(' 'x2).
485: '<a href="javascript:checkall(true,'.$seq->{'id'}.')">'.
486: &mt('Select').'</a>'.(' 'x2).
487: '<a href="javascript:checkall(false,'.$seq->{'id'}.')">'.
488: &mt('Unselect').'</a>'.(' 'x2).
489: '</td></tr>'.$/;
490: $Str.= $seq->{'html'};
491: }
492: $Str .= '</table>'.$/;
493: return $Str;
494: }
495:
496: sub new_accumulator {
497: my ($title,$src,$symb,$seq_id,$inputname) = @_;
498: my $target;
499: my $item_id=0;
500: return
501: sub {
502: if (@_) {
503: my ($res,$checked,$anonpart,$namedpart) = @_;
504: $target.='<tr><td><label>'.
505: '<input type="checkbox" name="'.$inputname.'" ';
506: if ($checked) {
507: $target .= 'checked="checked" ';
508: }
509: my $anon_id = $item_id;
510: $target .= 'id="'.$seq_id.':'.$item_id++.'" ';
511: my $esc_symb = &escape($res->symb);
512: $target.=
513: 'value="'.$esc_symb.'" />'.
514: ' '.$res->compTitle.'</label>'.
515: (' 'x2).'<a target="preview" '.
516: 'href="'.$res->link.'?symb='.
517: &escape($res->shown_symb).'">'.&mt('view').'</a>'.
518: '<input type="hidden" id="anonymous_'.$seq_id.':'.$anon_id.'" name="hidden_'.$seq_id.':'.$anon_id.'" value="'.$anonpart.'" />';
519: my $mixed = '<input type="hidden" id="mixed_'.$seq_id.':'.$anon_id.'" value="none" name="mixed_'.$seq_id.':'.$anon_id.'" />';
520: if ($anonpart) {
521: if ($namedpart) {
522: my $checknamed = '';
523: my $checkedanon = ' checked="checked"';
524: if ($env{'form.mixed_'.$seq_id.':'.$anon_id} eq $esc_symb) {
525: $checknamed = $checkedanon;
526: $checkedanon = '';
527: }
528: $mixed = ' ('.
529: &mt('Both anonymous and named submissions -- display: [_1]Anonymous [_2]Named[_3]',
530: '<span class="LC_nobreak"><label>'.
531: '<input type="radio" name="mixed_'.$seq_id.':'.$anon_id.
532: '" value="0" id="mixed_'.$seq_id.':'.$anon_id.'"'.$checkedanon.' />',
533: '</label></span>'.(' 'x2).' <span class="LC_nobreak">'.
534: '<label><input type="radio" name="mixed_'.$seq_id.':'.$anon_id.
535: '" value="symb_'.$esc_symb.'" id="named_'.$seq_id.':'.$anon_id.'"'.$checknamed.' />',
536: '</label></span>').')';
537: } else {
538: $target .= ' '.&mt('(Anonymous Survey)');
539: }
540: }
541: $target.= $mixed.'</td></tr>'.$/;
542: } else {
543: if (defined($target)) {
544: return { title => $title,
545: symb => $symb,
546: src => $src,
547: id => $seq_id,
548: html => $target, };
549: }
550: return undef;
551: }
552: };
553: }
554:
555: sub get_selected_symbs {
556: my ($inputfield) = @_;
557: my $field = 'form.'.$inputfield;
558: my @symbs = (map {
559: &unescape($_);
560: } &Apache::loncommon::get_env_multiple($field));
561: return @symbs;
562: }
563:
564: ####################################################
565: ####################################################
566:
567: =pod
568:
569: =item &make_target_id($target)
570:
571: Inputs: Hash ref with the following entries:
572: $target->{'symb'}, $target->{'part'}, $target->{'respid'},
573: $target->{'resptype'}.
574:
575: Returns: A string, suitable for a form parameter, which uniquely identifies
576: the problem, part, and response to do statistical analysis on.
577:
578: Used by Apache::lonstathelpers::ProblemSelector().
579:
580: =cut
581:
582: ####################################################
583: ####################################################
584: sub make_target_id {
585: my ($target) = @_;
586: my $id = &escape($target->{'symb'}).':'.
587: &escape($target->{'part'}).':'.
588: &escape($target->{'respid'}).':'.
589: &escape($target->{'resptype'});
590: return $id;
591: }
592:
593: ####################################################
594: ####################################################
595:
596: =pod
597:
598: =item &get_target_from_id($id)
599:
600: Inputs: $id, a scalar string from Apache::lonstathelpers::make_target_id().
601:
602: Returns: A hash reference, $target, containing the following keys:
603: $target->{'symb'}, $target->{'part'}, $target->{'respid'},
604: $target->{'resptype'}.
605:
606: =cut
607:
608: ####################################################
609: ####################################################
610: sub get_target_from_id {
611: my ($id) = @_;
612: if (! ref($id)) {
613: my ($symb,$part,$respid,$resptype) = split(':',$id);
614: return ({ symb => &unescape($symb),
615: part => &unescape($part),
616: respid => &unescape($respid),
617: resptype => &unescape($resptype)});
618: } elsif (ref($id) eq 'ARRAY') {
619: my @Return;
620: foreach my $selected (@$id) {
621: my ($symb,$part,$respid,$resptype) = split(':',$selected);
622: push(@Return,{ symb => &unescape($symb),
623: part => &unescape($part),
624: respid => &unescape($respid),
625: resptype => &unescape($resptype)});
626: }
627: return \@Return;
628: }
629: }
630:
631: ####################################################
632: ####################################################
633:
634: =pod
635:
636: =item &get_prev_curr_next($target,$AcceptableResponseTypes,$granularity)
637:
638: Determine the problem parts or responses preceeding and following the
639: current resource.
640:
641: Inputs: $target (see &Apache::lonstathelpers::get_target_from_id())
642: $AcceptableResponseTypes, regular expression matching acceptable
643: response types,
644: $granularity, either 'part', 'response', 'part_survey', or 'part_task'
645:
646: Returns: three hash references, $prev, $curr, $next, which refer to the
647: preceeding, current, or following problem parts or responses, depending
648: on the value of $granularity. Values of undef indicate there is no
649: previous or next part/response. A value of undef for all three indicates
650: there was no match found to the current part/resource.
651:
652: The hash references contain the following keys:
653: symb, part, resource
654:
655: If $granularity eq 'response', the following ADDITIONAL keys will be present:
656: respid, resptype
657:
658: =cut
659:
660: ####################################################
661: ####################################################
662: sub get_prev_curr_next {
663: my ($target,$AcceptableResponseTypes,$granularity) = @_;
664: #
665: # Build an array with the data we need to search through
666: my @Resource;
667: my ($navmap,@sequences) =
668: &Apache::lonstatistics::selected_sequences_with_assessments('all');
669: return $navmap if (! ref($navmap));
670: foreach my $seq (@sequences) {
671: my @resources = &get_resources($navmap,$seq);
672: foreach my $res (@resources) {
673: foreach my $part (@{$res->parts}) {
674: if (($res->is_survey($part) || ($res->is_anonsurvey($part))) &&
675: ($granularity eq 'part_survey')) {
676: push (@Resource,
677: { symb => $res->symb,
678: part => $part,
679: resource => $res,
680: } );
681: } elsif ($res->is_task($part) && ($granularity eq 'part_task')){
682: push (@Resource,
683: { symb => $res->symb,
684: part => $part,
685: resource => $res,
686: } );
687: } elsif ($granularity eq 'part') {
688: push (@Resource,
689: { symb => $res->symb,
690: part => $part,
691: resource => $res,
692: } );
693: } elsif ($granularity eq 'response') {
694: my @response_ids = $res->responseIds($part);
695: my @response_types = $res->responseType($part);
696: for (my $i=0;
697: $i<scalar(@response_ids);
698: $i++){
699: my $respid = $response_ids[$i];
700: my $resptype = $response_types[$i];
701: next if ($resptype !~ m/$AcceptableResponseTypes/);
702: push (@Resource,
703: { symb => $res->symb,
704: part => $part,
705: respid => $respid,
706: resptype => $resptype,
707: resource => $res,
708: } );
709: }
710: }
711: }
712: }
713: }
714: #
715: # Get the index of the current situation
716: my $curr_idx;
717: for ($curr_idx=0;$curr_idx<$#Resource;$curr_idx++) {
718: my $curr_item = $Resource[$curr_idx];
719: if ($granularity =~ /^(part|part_survey|part_task)$/) {
720: if ($curr_item->{'symb'} eq $target->{'symb'} &&
721: $curr_item->{'part'} eq $target->{'part'}) {
722: last;
723: }
724: } elsif ($granularity eq 'response') {
725: if ($curr_item->{'symb'} eq $target->{'symb'} &&
726: $curr_item->{'part'} eq $target->{'part'} &&
727: $curr_item->{'respid'} eq $target->{'respid'} &&
728: $curr_item->{'resptype'} eq $target->{'resptype'}) {
729: last;
730: }
731: }
732: }
733: my $curr_item = $Resource[$curr_idx];
734: if ($granularity =~ /^(part|part_survey|part_task)$/) {
735: if ($curr_item->{'symb'} ne $target->{'symb'} ||
736: $curr_item->{'part'} ne $target->{'part'}) {
737: # bogus symb - return nothing
738: return (undef,undef,undef);
739: }
740: } elsif ($granularity eq 'response') {
741: if ($curr_item->{'symb'} ne $target->{'symb'} ||
742: $curr_item->{'part'} ne $target->{'part'} ||
743: $curr_item->{'respid'} ne $target->{'respid'} ||
744: $curr_item->{'resptype'} ne $target->{'resptype'}){
745: # bogus symb - return nothing
746: return (undef,undef,undef);
747: }
748: }
749: #
750: # Now just pick up the data we need
751: my ($prev,$curr,$next);
752: if ($curr_idx == 0) {
753: $prev = undef;
754: $curr = $Resource[$curr_idx ];
755: $next = $Resource[$curr_idx+1];
756: } elsif ($curr_idx == $#Resource) {
757: $prev = $Resource[$curr_idx-1];
758: $curr = $Resource[$curr_idx ];
759: $next = undef;
760: } else {
761: $prev = $Resource[$curr_idx-1];
762: $curr = $Resource[$curr_idx ];
763: $next = $Resource[$curr_idx+1];
764: }
765: return ($navmap,$prev,$curr,$next);
766: }
767:
768:
769: #####################################################
770: #####################################################
771:
772: =pod
773:
774: =item GetStudentAnswers($r,$problem,$Students)
775:
776: Determines the correct answer for a set of students on a given problem.
777: The students answers are stored in the student hashes pointed to by the
778: array @$Students under the key 'answer'.
779:
780: Inputs: $r
781: $problem: hash reference containing the keys 'resource', 'part', and 'respid'.
782: $Students: reference to array containing student hashes (need 'username',
783: 'domain').
784:
785: Returns: nothing
786:
787: =cut
788:
789: #####################################################
790: #####################################################
791: sub GetStudentAnswers {
792: my ($r,$problem,$Students,$formname,$inputname) = @_;
793: my %answers;
794: my $status_type;
795: if (defined($formname)) {
796: $status_type = 'inline';
797: } else {
798: $status_type = 'popup';
799: }
800: my $c = $r->connection();
801: my %Answers;
802: my ($resource,$partid,$respid) = ($problem->{'resource'},
803: $problem->{'part'},
804: $problem->{'respid'});
805: # Read in the cache (if it exists) before we start timing things.
806: &Apache::lonstathelpers::ensure_proper_cache($resource->{'symb'});
807: # Open progress window
808: my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,scalar(@$Students));
809: $r->rflush();
810: foreach my $student (@$Students) {
811: last if ($c->aborted());
812: my $sname = $student->{'username'};
813: my $sdom = $student->{'domain'};
814: my $answer = &Apache::lonstathelpers::get_student_answer
815: ($resource,$sname,$sdom,$partid,$respid);
816: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
817: 'last student');
818: $answers{$answer}++;
819: $student->{'answer'} = $answer;
820: }
821: &Apache::lonstathelpers::write_analysis_cache();
822: return if ($c->aborted());
823: $r->rflush();
824: # close progress window
825: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
826: return \%answers;
827: }
828:
829: #####################################################
830: #####################################################
831:
832: =pod
833:
834: =item analyze_problem_as_student
835:
836: Analyzes a homework problem for a student
837:
838: Inputs: $resource: a resource object
839: $sname, $sdom, $partid, $respid
840:
841: Returns: the problem analysis hash
842:
843: =cut
844:
845: #####################################################
846: #####################################################
847: sub analyze_problem_as_student {
848: my ($resource,$sname,$sdom) = @_;
849: if (ref($resource) ne 'HASH') {
850: my $res = $resource;
851: $resource = { 'src' => $res->src,
852: 'symb' => $res->symb,
853: 'parts' => $res->parts };
854: foreach my $part (@{$resource->{'parts'}}) {
855: $resource->{'partdata'}->{$part}->{'ResponseIds'}=
856: [$res->responseIds($part)];
857: }
858: }
859: my $url = $resource->{'src'};
860: my $symb = $resource->{'symb'};
861: my $analysis = &get_from_analysis_cache($sname,$sdom,$symb);
862: if (! defined($analysis)) {
863: my $courseid = $env{'request.course.id'};
864: my $Answ=&Apache::lonnet::ssi($url,('grade_target' => 'analyze',
865: 'grade_domain' => $sdom,
866: 'grade_username' => $sname,
867: 'grade_symb' => $symb,
868: 'grade_courseid' => $courseid));
869: (my $garbage,$analysis)=split(/_HASH_REF__/,$Answ,2);
870: &store_analysis($sname,$sdom,$symb,$analysis);
871: }
872: my %Answer=&Apache::lonnet::str2hash($analysis);
873: #
874: return \%Answer;
875: }
876:
877: #####################################################
878: #####################################################
879:
880: =pod
881:
882: =item get_student_answer
883:
884: Analyzes a homework problem for a particular student and returns the correct
885: answer. Attempts to put together an answer for problem types
886: that do not natively support it.
887:
888: Inputs: $resource: a resource object (from navmaps or hash from loncoursedata)
889: $sname, $sdom, $partid, $respid
890:
891: Returns: $answer
892:
893: If $partid and $respid are specified, $answer is simply a scalar containing
894: the correct answer for the response.
895:
896: If $partid or $respid are undefined, $answer will be a hash reference with
897: keys $partid.'.'.$respid.'.answer'.
898:
899: =cut
900:
901: #####################################################
902: #####################################################
903: sub get_student_answer {
904: my ($resource,$sname,$sdom,$partid,$respid) = @_;
905: #
906: if (ref($resource) ne 'HASH') {
907: my $res = $resource;
908: $resource = { 'src' => $res->src,
909: 'symb' => $res->symb,
910: 'parts' => $res->parts };
911: foreach my $part (@{$resource->{'parts'}}) {
912: $resource->{'partdata'}->{$part}->{'ResponseIds'}=
913: [$res->responseIds($part)];
914: }
915: }
916: #
917: my $analysis =
918: &analyze_problem_as_student($resource,$sname,$sdom);
919: my $answer;
920: foreach my $partid (@{$resource->{'parts'}}) {
921: my $partdata = $resource->{'partdata'}->{$partid};
922: foreach my $respid (@{$partdata->{'ResponseIds'}}) {
923: my $prefix = $partid.'.'.$respid;
924: my $key = $prefix.'.answer';
925: $answer->{$partid}->{$respid} =
926: &get_answer($prefix,$key,%$analysis);
927: }
928: }
929: my $returnvalue;
930: if (! defined($partid)) {
931: $returnvalue = $answer;
932: } elsif (! defined($respid)) {
933: $returnvalue = $answer->{$partid};
934: } else {
935: $returnvalue = $answer->{$partid}->{$respid};
936: }
937: return $returnvalue;
938: }
939:
940: sub get_answer {
941: my ($prefix,$key,%Answer) = @_;
942: my $returnvalue;
943: if (exists($Answer{$key})) {
944: if (ref($Answer{$key}) eq 'HASH') {
945: my $which = 'INTERNAL';
946: if (!exists($Answer{$key}{$which})) {
947: $which = (sort(keys(%{ $Answer{$key} })))[0];
948: }
949: my $student_answer = $Answer{$key}{$which}[0][0];
950: $returnvalue = $student_answer;
951: } else {
952: &Apache::lonnet::logthis("error analyzing problem. got a answer of type ".ref($Answer{$key}));
953: }
954: } else {
955: if (exists($Answer{$prefix.'.shown'})) {
956: # The response has foils
957: my %values;
958: while (my ($k,$v) = each(%Answer)) {
959: next if ($k !~ /^$prefix\.foil\.(value|area)\.(.*)$/);
960: my $foilname = $2;
961: $values{$foilname}=$v;
962: }
963: foreach my $foil (@{$Answer{$prefix.'.shown'}}) {
964: if (ref($values{$foil}) eq 'ARRAY') {
965: $returnvalue.=&HTML::Entities::encode($foil,'<>&"').'='.
966: join(',',map {&HTML::Entities::encode($_,'<>&"')} @{$values{$foil}}).'&';
967: } else {
968: $returnvalue.=&HTML::Entities::encode($foil,'<>&"').'='.
969: &HTML::Entities::encode($values{$foil},'<>&"').'&';
970: }
971: }
972: $returnvalue =~ s/ /\%20/g;
973: chop ($returnvalue);
974: }
975: }
976: return $returnvalue;
977: }
978:
979: #####################################################
980: #####################################################
981:
982: =pod
983:
984: =item Caching routines
985:
986: =over 4
987:
988: =item &load_analysis_cache($symb)
989:
990: Loads the cache for the given symb into memory from disk.
991: Requires the cache filename be set.
992: Only should be called by &ensure_proper_cache.
993:
994: =cut
995:
996: #####################################################
997: #####################################################
998: {
999: my $cache_filename = undef;
1000: my $current_symb = undef;
1001: my %cache;
1002:
1003: sub load_analysis_cache {
1004: my ($symb) = @_;
1005: return if (! defined($cache_filename));
1006: if (! defined($current_symb) || $current_symb ne $symb) {
1007: undef(%cache);
1008: my $storedstring;
1009: my %cache_db;
1010: if (tie(%cache_db,'GDBM_File',$cache_filename,&GDBM_READER(),0640)) {
1011: $storedstring = $cache_db{&escape($symb)};
1012: untie(%cache_db);
1013: }
1014: if (defined($storedstring)) {
1015: %cache = %{thaw($storedstring)};
1016: }
1017: }
1018: return;
1019: }
1020:
1021: #####################################################
1022: #####################################################
1023:
1024: =pod
1025:
1026: =item &get_from_analysis_cache($sname,$sdom,$symb,$partid,$respid)
1027:
1028: Returns the appropriate data from the cache, or undef if no data exists.
1029:
1030: =cut
1031:
1032: #####################################################
1033: #####################################################
1034: sub get_from_analysis_cache {
1035: my ($sname,$sdom,$symb) = @_;
1036: &ensure_proper_cache($symb);
1037: my $returnvalue;
1038: if (exists($cache{$sname.':'.$sdom})) {
1039: $returnvalue = $cache{$sname.':'.$sdom};
1040: } else {
1041: $returnvalue = undef;
1042: }
1043: return $returnvalue;
1044: }
1045:
1046: #####################################################
1047: #####################################################
1048:
1049: =pod
1050:
1051: =item &write_analysis_cache($symb)
1052:
1053: Writes the in memory cache to disk so that it can be read in with
1054: &load_analysis_cache($symb).
1055:
1056: =cut
1057:
1058: #####################################################
1059: #####################################################
1060: sub write_analysis_cache {
1061: return if (! defined($current_symb) || ! defined($cache_filename));
1062: my %cache_db;
1063: my $key = &escape($current_symb);
1064: if (tie(%cache_db,'GDBM_File',$cache_filename,&GDBM_WRCREAT(),0640)) {
1065: my $storestring = freeze(\%cache);
1066: $cache_db{$key}=$storestring;
1067: $cache_db{$key.'.time'}=time;
1068: untie(%cache_db);
1069: }
1070: undef(%cache);
1071: undef($current_symb);
1072: undef($cache_filename);
1073: return;
1074: }
1075:
1076: #####################################################
1077: #####################################################
1078:
1079: =pod
1080:
1081: =item &ensure_proper_cache($symb)
1082:
1083: Called to make sure we have the proper cache set up. This is called
1084: prior to every analysis lookup.
1085:
1086: =cut
1087:
1088: #####################################################
1089: #####################################################
1090: sub ensure_proper_cache {
1091: my ($symb) = @_;
1092: my $cid = $env{'request.course.id'};
1093: my $new_filename = LONCAPA::tempdir() .
1094: 'problemanalysis_'.$cid.'_analysis_cache.db';
1095: if (! defined($cache_filename) ||
1096: $cache_filename ne $new_filename ||
1097: ! defined($current_symb) ||
1098: $current_symb ne $symb) {
1099: $cache_filename = $new_filename;
1100: # Notice: $current_symb is not set to $symb until after the cache is
1101: # loaded. This is what tells &load_analysis_cache to load in a new
1102: # symb cache.
1103: &load_analysis_cache($symb);
1104: $current_symb = $symb;
1105: }
1106: }
1107:
1108: #####################################################
1109: #####################################################
1110:
1111: =pod
1112:
1113: =item &store_analysis($sname,$sdom,$symb,$partid,$respid,$dataset)
1114:
1115: Stores the analysis data in the in memory cache.
1116:
1117: =cut
1118:
1119: #####################################################
1120: #####################################################
1121: sub store_analysis {
1122: my ($sname,$sdom,$symb,$dataset) = @_;
1123: return if ($symb ne $current_symb);
1124: $cache{$sname.':'.$sdom}=$dataset;
1125: return;
1126: }
1127:
1128: }
1129: #####################################################
1130: #####################################################
1131:
1132: =pod
1133:
1134: =back
1135:
1136: =cut
1137:
1138: #####################################################
1139: #####################################################
1140:
1141: ##
1142: ## The following is copied from datecalc1.pl, part of the
1143: ## Spreadsheet::WriteExcel CPAN module.
1144: ##
1145: ##
1146: ######################################################################
1147: #
1148: # Demonstration of writing date/time cells to Excel spreadsheets,
1149: # using UNIX/Perl time as source of date/time.
1150: #
1151: # Copyright 2000, Andrew Benham, adsb@bigfoot.com
1152: #
1153: ######################################################################
1154: #
1155: # UNIX/Perl time is the time since the Epoch (00:00:00 GMT, 1 Jan 1970)
1156: # measured in seconds.
1157: #
1158: # An Excel file can use exactly one of two different date/time systems.
1159: # In these systems, a floating point number represents the number of days
1160: # (and fractional parts of the day) since a start point. The floating point
1161: # number is referred to as a 'serial'.
1162: # The two systems ('1900' and '1904') use different starting points:
1163: # '1900'; '1.00' is 1 Jan 1900 BUT 1900 is erroneously regarded as
1164: # a leap year - see:
1165: # http://support.microsoft.com/support/kb/articles/Q181/3/70.asp
1166: # for the excuse^H^H^H^H^H^Hreason.
1167: # '1904'; '1.00' is 2 Jan 1904.
1168: #
1169: # The '1904' system is the default for Apple Macs. Windows versions of
1170: # Excel have the option to use the '1904' system.
1171: #
1172: # Note that Visual Basic's "DateSerial" function does NOT erroneously
1173: # regard 1900 as a leap year, and thus its serials do not agree with
1174: # the 1900 serials of Excel for dates before 1 Mar 1900.
1175: #
1176: # Note that StarOffice (at least at version 5.2) does NOT erroneously
1177: # regard 1900 as a leap year, and thus its serials do not agree with
1178: # the 1900 serials of Excel for dates before 1 Mar 1900.
1179: #
1180: ######################################################################
1181: #
1182: # Calculation description
1183: # =======================
1184: #
1185: # 1900 system
1186: # -----------
1187: # Unix time is '0' at 00:00:00 GMT 1 Jan 1970, i.e. 70 years after 1 Jan 1900.
1188: # Of those 70 years, 17 (1904,08,12,16,20,24,28,32,36,40,44,48,52,56,60,64,68)
1189: # were leap years with an extra day.
1190: # Thus there were 17 + 70*365 days = 25567 days between 1 Jan 1900 and
1191: # 1 Jan 1970.
1192: # In the 1900 system, '1' is 1 Jan 1900, but as 1900 was not a leap year
1193: # 1 Jan 1900 should really be '2', so 1 Jan 1970 is '25569'.
1194: #
1195: # 1904 system
1196: # -----------
1197: # Unix time is '0' at 00:00:00 GMT 1 Jan 1970, i.e. 66 years after 1 Jan 1904.
1198: # Of those 66 years, 17 (1904,08,12,16,20,24,28,32,36,40,44,48,52,56,60,64,68)
1199: # were leap years with an extra day.
1200: # Thus there were 17 + 66*365 days = 24107 days between 1 Jan 1904 and
1201: # 1 Jan 1970.
1202: # In the 1904 system, 2 Jan 1904 being '1', 1 Jan 1970 is '24107'.
1203: #
1204: ######################################################################
1205: #
1206: # Copyright (c) 2000, Andrew Benham.
1207: # This program is free software. It may be used, redistributed and/or
1208: # modified under the same terms as Perl itself.
1209: #
1210: # Andrew Benham, adsb@bigfoot.com
1211: # London, United Kingdom
1212: # 11 Nov 2000
1213: #
1214: ######################################################################
1215: #-----------------------------------------------------------
1216: # calc_serial()
1217: #
1218: # Called with (up to) 2 parameters.
1219: # 1. Unix timestamp. If omitted, uses current time.
1220: # 2. GMT flag. Set to '1' to return serial in GMT.
1221: # If omitted, returns serial in appropriate timezone.
1222: #
1223: # Returns date/time serial according to $DATE_SYSTEM selected
1224: #-----------------------------------------------------------
1225: sub calc_serial {
1226: # Use 1900 date system on all platforms other than Apple Mac (for which
1227: # use 1904 date system).
1228: my $DATE_SYSTEM = ($^O eq 'MacOS') ? 1 : 0;
1229: my $time = (defined $_[0]) ? $_[0] : time();
1230: my $gmtflag = (defined $_[1]) ? $_[1] : 0;
1231: #
1232: # Divide timestamp by number of seconds in a day.
1233: # This gives a date serial with '0' on 1 Jan 1970.
1234: my $serial = $time / 86400;
1235: #
1236: # Adjust the date serial by the offset appropriate to the
1237: # currently selected system (1900/1904).
1238: if ($DATE_SYSTEM == 0) { # use 1900 system
1239: $serial += 25569;
1240: } else { # use 1904 system
1241: $serial += 24107;
1242: }
1243: #
1244: unless ($gmtflag) {
1245: # Now have a 'raw' serial with the right offset. But this
1246: # gives a serial in GMT, which is false unless the timezone
1247: # is GMT. We need to adjust the serial by the appropriate
1248: # timezone offset.
1249: # Calculate the appropriate timezone offset by seeing what
1250: # the differences between localtime and gmtime for the given
1251: # time are.
1252: #
1253: my @gmtime = gmtime($time);
1254: my @ltime = localtime($time);
1255: #
1256: # For the first 7 elements of the two arrays, adjust the
1257: # date serial where the elements differ.
1258: for (0 .. 6) {
1259: my $diff = $ltime[$_] - $gmtime[$_];
1260: if ($diff) {
1261: $serial += _adjustment($diff,$_);
1262: }
1263: }
1264: }
1265: #
1266: # Perpetuate the error that 1900 was a leap year by decrementing
1267: # the serial if we're using the 1900 system and the date is prior to
1268: # 1 Mar 1900. This has the effect of making serial value '60'
1269: # 29 Feb 1900.
1270: #
1271: # This fix only has any effect if UNIX/Perl time on the platform
1272: # can represent 1900. Many can't.
1273: #
1274: unless ($DATE_SYSTEM) {
1275: $serial-- if ($serial < 61); # '61' is 1 Mar 1900
1276: }
1277: return $serial;
1278: }
1279:
1280: sub _adjustment {
1281: # Based on the difference in the localtime/gmtime array elements
1282: # number, return the adjustment required to the serial.
1283: #
1284: # We only look at some elements of the localtime/gmtime arrays:
1285: # seconds unlikely to be different as all known timezones
1286: # have an offset of integral multiples of 15 minutes,
1287: # but it's easy to do.
1288: # minutes will be different for timezone offsets which are
1289: # not an exact number of hours.
1290: # hours very likely to be different.
1291: # weekday will differ when localtime/gmtime difference
1292: # straddles midnight.
1293: #
1294: # Assume that difference between localtime and gmtime is less than
1295: # 5 days, then don't have to do maths for day of month, month number,
1296: # year number, etc...
1297: #
1298: my ($delta,$element) = @_;
1299: my $adjust = 0;
1300: #
1301: if ($element == 0) { # Seconds
1302: $adjust = $delta/86400; # 60 * 60 * 24
1303: } elsif ($element == 1) { # Minutes
1304: $adjust = $delta/1440; # 60 * 24
1305: } elsif ($element == 2) { # Hours
1306: $adjust = $delta/24; # 24
1307: } elsif ($element == 6) { # Day of week number
1308: # Catch difference straddling Sat/Sun in either direction
1309: $delta += 7 if ($delta < -4);
1310: $delta -= 7 if ($delta > 4);
1311: #
1312: $adjust = $delta;
1313: }
1314: return $adjust;
1315: }
1316:
1317: ###########################################################
1318: ###########################################################
1319:
1320: =pod
1321:
1322: =item get_problem_data
1323:
1324: Returns a data structure describing the problem.
1325:
1326: Inputs: $url
1327:
1328: Returns: %Partdata
1329:
1330: =cut
1331:
1332: ## note: we must force each foil and option to not begin or end with
1333: ## spaces as they are stored without such data.
1334: ##
1335: ###########################################################
1336: ###########################################################
1337: sub get_problem_data {
1338: my ($url) = @_;
1339: my $Answ=&Apache::lonnet::ssi($url,('grade_target' => 'analyze'));
1340: (my $garbage,$Answ)=split(/_HASH_REF__/,$Answ,2);
1341: my %Answer;
1342: %Answer=&Apache::lonnet::str2hash($Answ);
1343: my %Partdata;
1344: foreach my $part (@{$Answer{'parts'}}) {
1345: while (my($key,$value) = each(%Answer)) {
1346: #
1347: # Logging code:
1348: if (0) {
1349: &Apache::lonnet::logthis($part.' got key "'.$key.'"');
1350: if (ref($value) eq 'ARRAY') {
1351: &Apache::lonnet::logthis(' @'.join(',',@$value));
1352: } else {
1353: &Apache::lonnet::logthis(' '.$value);
1354: }
1355: }
1356: # End of logging code
1357: next if ($key !~ /^\Q$part\E/);
1358: $key =~ s/^\Q$part\E\.//;
1359: if (ref($value) eq 'ARRAY') {
1360: if ($key eq 'options') {
1361: $Partdata{$part}->{'_Options'}=$value;
1362: } elsif ($key eq 'concepts') {
1363: $Partdata{$part}->{'_Concepts'}=$value;
1364: } elsif ($key eq 'items') {
1365: $Partdata{$part}->{'_Items'}=$value;
1366: } elsif ($key =~ /^concept\.(.*)$/) {
1367: my $concept = $1;
1368: foreach my $foil (@$value) {
1369: $Partdata{$part}->{'_Foils'}->{$foil}->{'_Concept'}=
1370: $concept;
1371: }
1372: } elsif ($key =~ /^(unit|incorrect|answer|ans_low|ans_high|str_type)$/) {
1373: $Partdata{$part}->{$key}=$value;
1374: }
1375: } else {
1376: if ($key=~ /^foil\.text\.(.*)$/) {
1377: my $foil = $1;
1378: $Partdata{$part}->{'_Foils'}->{$foil}->{'name'}=$foil;
1379: $value =~ s/(\s*$|^\s*)//g;
1380: $Partdata{$part}->{'_Foils'}->{$foil}->{'text'}=$value;
1381: } elsif ($key =~ /^foil\.value\.(.*)$/) {
1382: my $foil = $1;
1383: $Partdata{$part}->{'_Foils'}->{$foil}->{'value'}=$value;
1384: } elsif ($key eq 'answercomputed') {
1385: $Partdata{$part}->{'answercomputed'} = $value;
1386: }
1387: }
1388: }
1389: }
1390: # Further debugging code
1391: if (0) {
1392: &Apache::lonnet::logthis('lonstathelpers::get_problem_data');
1393: &log_hash_ref(\%Partdata);
1394: }
1395: return %Partdata;
1396: }
1397:
1398: sub log_array_ref {
1399: my ($arrayref,$prefix) = @_;
1400: return if (ref($arrayref) ne 'ARRAY');
1401: if (! defined($prefix)) { $prefix = ''; };
1402: foreach my $v (@$arrayref) {
1403: if (ref($v) eq 'ARRAY') {
1404: &log_array_ref($v,$prefix.' ');
1405: } elsif (ref($v) eq 'HASH') {
1406: &log_hash_ref($v,$prefix.' ');
1407: } else {
1408: &Apache::lonnet::logthis($prefix.'"'.$v.'"');
1409: }
1410: }
1411: }
1412:
1413: sub log_hash_ref {
1414: my ($hashref,$prefix) = @_;
1415: return if (ref($hashref) ne 'HASH');
1416: if (! defined($prefix)) { $prefix = ''; };
1417: while (my ($k,$v) = each(%$hashref)) {
1418: if (ref($v) eq 'ARRAY') {
1419: &Apache::lonnet::logthis($prefix.'"'.$k.'" = array');
1420: &log_array_ref($v,$prefix.' ');
1421: } elsif (ref($v) eq 'HASH') {
1422: &Apache::lonnet::logthis($prefix.'"'.$k.'" = hash');
1423: &log_hash_ref($v,$prefix.' ');
1424: } else {
1425: &Apache::lonnet::logthis($prefix.'"'.$k.'" => "'.$v.'"');
1426: }
1427: }
1428: }
1429: ####################################################
1430: ####################################################
1431:
1432: =pod
1433:
1434: =item &limit_by_time()
1435:
1436: =cut
1437:
1438: ####################################################
1439: ####################################################
1440: sub limit_by_time_form {
1441: my $Starttime_form = '';
1442: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
1443: ('limitby_startdate');
1444: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
1445: ('limitby_enddate');
1446: if (! defined($endtime)) {
1447: $endtime = time;
1448: }
1449: if (! defined($starttime)) {
1450: $starttime = $endtime - 60*60*24*7;
1451: }
1452: my $state;
1453: if (&limit_by_time()) {
1454: $state = '';
1455: } else {
1456: $state = 'disabled';
1457: }
1458: my $startdateform = &Apache::lonhtmlcommon::date_setter
1459: ('Statistics','limitby_startdate',$starttime,undef,undef,$state);
1460: my $enddateform = &Apache::lonhtmlcommon::date_setter
1461: ('Statistics','limitby_enddate',$endtime,undef,undef,$state);
1462: my $Str;
1463: $Str .= '<script type="text/javascript" language="JavaScript">';
1464: $Str .= 'function toggle_limitby_activity(state) {';
1465: $Str .= ' if (state) {';
1466: $Str .= ' limitby_startdate_enable();';
1467: $Str .= ' limitby_enddate_enable();';
1468: $Str .= ' } else {';
1469: $Str .= ' limitby_startdate_disable();';
1470: $Str .= ' limitby_enddate_disable();';
1471: $Str .= ' }';
1472: $Str .= '}';
1473: $Str .= '</script>';
1474: $Str .= '<fieldset>';
1475: my $timecheckbox = '<input type="checkbox" name="limit_by_time" ';
1476: if (&limit_by_time()) {
1477: $timecheckbox .= 'checked="checked" ';
1478: }
1479: $timecheckbox .= 'onchange="javascript:toggle_limitby_activity(this.checked);" ';
1480: $timecheckbox .= ' />';
1481: $Str .= '<legend><label>'.&mt('[_1] Limit by time',$timecheckbox).'</label></legend>';
1482: $Str .= &mt('Start Time: [_1]',$startdateform).'<br />';
1483: $Str .= &mt(' End Time: [_1]',$enddateform).'<br />';
1484: $Str .= '</fieldset>';
1485: return $Str;
1486: }
1487:
1488: sub limit_by_time {
1489: if (exists($env{'form.limit_by_time'}) &&
1490: $env{'form.limit_by_time'} ne '' ) {
1491: return 1;
1492: } else {
1493: return 0;
1494: }
1495: }
1496:
1497: sub get_time_limits {
1498: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
1499: ('limitby_startdate');
1500: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
1501: ('limitby_enddate');
1502: return ($starttime,$endtime);
1503: }
1504:
1505: ####################################################
1506: ####################################################
1507:
1508: =pod
1509:
1510: =item &manage_caches
1511:
1512: Inputs: $r, apache request object
1513:
1514: Returns: An array of scalars containing html for buttons.
1515:
1516: =cut
1517:
1518: ####################################################
1519: ####################################################
1520: sub manage_caches {
1521: my ($r,$formname,$inputname,$update_message) = @_;
1522: &Apache::loncoursedata::clear_internal_caches();
1523: my $sectionkey =
1524: join(',',
1525: map {
1526: &escape($_);
1527: } sort(&Apache::lonstatistics::get_selected_sections())
1528: );
1529: my $statuskey = $Apache::lonstatistics::enrollment_status;
1530: if (exists($env{'form.ClearCache'}) ||
1531: exists($env{'form.updatecaches'}) ||
1532: (exists($env{'form.firstrun'}) && $env{'form.firstrun'} ne 'no') ||
1533: (exists($env{'form.prevsection'}) &&
1534: $env{'form.prevsection'} ne $sectionkey) ||
1535: (exists($env{'form.prevenrollstatus'}) &&
1536: $env{'form.prevenrollstatus'} ne $statuskey)
1537: ) {
1538: if (defined($update_message)) {
1539: $r->print($update_message);
1540: }
1541: if (0) {
1542: &Apache::lonnet::logthis('Updating mysql student data caches');
1543: }
1544: &gather_full_student_data($r,$formname,$inputname);
1545: }
1546: #
1547: my @Buttons =
1548: ('<input type="submit" name="ClearCache" '.
1549: 'value="'.&mt('Clear Caches').'" />',
1550: '<input type="submit" name="updatecaches" '.
1551: 'value="'.&mt('Update Caches').'" />'.
1552: &Apache::loncommon::help_open_topic('Statistics_Cache'),
1553: '<input type="hidden" name="prevsection" value="'.$sectionkey.'" />',
1554: '<input type="hidden" name="prevenrollstatus" value="'.$statuskey.'" />'
1555: );
1556: #
1557: if (! exists($env{'form.firstrun'})) {
1558: $r->print('<input type="hidden" name="firstrun" value="yes" />');
1559: } else {
1560: $r->print('<input type="hidden" name="firstrun" value="no" />');
1561: }
1562: #
1563: return @Buttons;
1564: }
1565:
1566: sub gather_full_student_data {
1567: my ($r,$formname,$inputname) = @_;
1568: my $status_type;
1569: if (defined($formname)) {
1570: $status_type = 'inline';
1571: } else {
1572: $status_type = 'popup';
1573: }
1574: my $c = $r->connection();
1575: #
1576: &Apache::loncoursedata::clear_internal_caches();
1577: #
1578: my @Students = @Apache::lonstatistics::Students;
1579: #
1580: # Open the progress window
1581: my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,scalar(@Students));
1582: #
1583: while (my $student = shift @Students) {
1584: return if ($c->aborted());
1585: my $status = &Apache::loncoursedata::ensure_current_full_data
1586: ($student->{'username'},$student->{'domain'},
1587: $env{'request.course.id'});
1588: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
1589: &mt('last student'));
1590: }
1591: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
1592: $r->rflush();
1593: return;
1594: }
1595:
1596: ####################################################
1597: ####################################################
1598:
1599: =pod
1600:
1601: =item &submission_report_form
1602:
1603: Input: The originating reportSelected value for the current stats page.
1604:
1605: Output: Scalar containing HTML with needed form elements and a link to
1606: the student submission reports page.
1607:
1608: =cut
1609:
1610: ####################################################
1611: ####################################################
1612: sub submission_report_form {
1613: my ($original_report) = @_;
1614: # Note: In the link below we change the reportSelected value. If
1615: # the user hits the 'back' button on the browser after getting their
1616: # student submissions report, this value may still be around. So we
1617: # output a script block to set it properly. If the $original_report
1618: # value is unset, you are just asking for trouble.
1619: if (! defined($original_report)) {
1620: &Apache::lonnet::logthis
1621: ('someone called lonstathelpers::submission_report_form without '.
1622: ' enough input.');
1623: }
1624: my $html = $/.
1625: '<script type="text/javascript" language="JavaScript">'.
1626: "document.Statistics.reportSelected.value='$original_report';".
1627: '</script>'.
1628: '<input type="hidden" name="correctans" value="true" />'.
1629: '<input type="hidden" name="prob_status" value="true" />'.
1630: '<input type="hidden" name="all_sub" value="true" />';
1631: my $output_selector = $/.'<select name="output">'.$/;
1632: foreach ('HTML','Excel','CSV') {
1633: $output_selector .= ' <option value="'.lc($_).'"';
1634: if ($env{'form.output'} eq lc($_)) {
1635: $output_selector .= ' selected ';
1636: }
1637: $output_selector .='>'.&mt($_).'</option>'.$/;
1638: }
1639: $output_selector .= '</select>'.$/;
1640: my $link = '<a href="javascript:'.
1641: q{document.Statistics.reportSelected.value='student_submission_reports';}.
1642: 'document.Statistics.submit();">';
1643: $html.= &mt('View data as [_1] [_2]go[_3]',$output_selector,
1644: $link,'</a>').$/;
1645: return $html
1646: }
1647:
1648: ####################################################
1649: ####################################################
1650:
1651: =pod
1652:
1653: =back
1654:
1655: =cut
1656:
1657: ####################################################
1658: ####################################################
1659:
1660: 1;
1661:
1662: __END__
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