Annotation of loncom/interface/statistics/lonstathelpers.pm, revision 1.59.12.2
1.1 matthew 1: # The LearningOnline Network with CAPA
2: #
1.59.12.2! raeburn 3: # $Id: lonstathelpers.pm,v 1.59.12.1 2010/09/11 19:08:23 raeburn Exp $
1.1 matthew 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;
1.46 albertel 52: use Apache::lonnet;
1.1 matthew 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();
1.8 matthew 61: use GDBM_File;
62: use Storable qw(freeze thaw);
1.53 www 63: use lib '/home/httpd/lib/perl/';
64: use LONCAPA;
65:
1.1 matthew 66:
67: ####################################################
68: ####################################################
69:
70: =pod
71:
72: =item &render_resource($resource)
73:
1.42 matthew 74: Input: a navmaps resource
1.1 matthew 75:
76: Retunrs: a scalar containing html for a rendering of the problem
77: within a table.
78:
79: =cut
80:
81: ####################################################
82: ####################################################
83: sub render_resource {
84: my ($resource) = @_;
85: ##
86: ## Render the problem
1.43 matthew 87: my ($base) = ($resource->src =~ m|^(.*/)[^/]*$|);
88: $base="http://".$ENV{'SERVER_NAME'}.$base;
1.55 raeburn 89: my ($src,$symb)=($resource->link,&escape($resource->shown_symb));
1.40 matthew 90: my $rendered_problem = &Apache::lonnet::ssi_body($src.'?symb='.$symb);
1.1 matthew 91: $rendered_problem =~ s/<\s*form\s*/<nop /g;
92: $rendered_problem =~ s|(<\s*/form\s*>)|<\/nop>|g;
93: return '<table bgcolor="ffffff"><tr><td>'.
94: '<base href="'.$base.'" />'.
95: $rendered_problem.
96: '</td></tr></table>';
97: }
1.2 matthew 98:
99: ####################################################
100: ####################################################
101:
102: =pod
103:
1.40 matthew 104: =item &get_resources
105:
106: =cut
107:
108: ####################################################
109: ####################################################
110: sub get_resources {
111: my ($navmap,$sequence) = @_;
112: my @resources = $navmap->retrieveResources($sequence,
113: sub { shift->is_problem(); },
114: 0,0,0);
115: return @resources;
116: }
117:
118: ####################################################
119: ####################################################
120:
121: =pod
122:
123: =item &problem_selector($AcceptedResponseTypes)
1.2 matthew 124:
125: Input: scalar containing regular expression which matches response
126: types to show. '.' will yield all, '(option|radiobutton)' will match
127: all option response and radiobutton problems.
128:
129: Returns: A string containing html for a table which lists the sequences
130: and their contents. A radiobutton is provided for each problem.
1.14 matthew 131: Skips 'survey' problems.
1.2 matthew 132:
133: =cut
134:
135: ####################################################
136: ####################################################
1.40 matthew 137: sub problem_selector {
1.50 matthew 138: my ($AcceptedResponseTypes,$sequence_addendum) = @_;
1.2 matthew 139: my $Str;
140: $Str = "\n<table>\n";
1.27 matthew 141: my $rb_count =0;
1.40 matthew 142: my ($navmap,@sequences) =
143: &Apache::lonstatistics::selected_sequences_with_assessments('all');
144: return $navmap if (! ref($navmap)); # error
145: foreach my $seq (@sequences) {
1.2 matthew 146: my $seq_str = '';
1.40 matthew 147: foreach my $res (&get_resources($navmap,$seq)) {
148: foreach my $part (@{$res->parts}) {
149: my @response_ids = $res->responseIds($part);
150: my @response_types = $res->responseType($part);
151: for (my $i=0;$i<scalar(@response_types);$i++){
152: my $respid = $response_ids[$i];
153: my $resptype = $response_types[$i];
1.2 matthew 154: if ($resptype =~ m/$AcceptedResponseTypes/) {
1.40 matthew 155: my $value = &make_target_id({symb=>$res->symb,
1.2 matthew 156: part=>$part,
157: respid=>$respid,
158: resptype=>$resptype});
159: my $checked = '';
1.46 albertel 160: if ($env{'form.problemchoice'} eq $value) {
1.59 bisitz 161: $checked = ' checked="checked"';
1.2 matthew 162: }
1.40 matthew 163: my $title = $res->compTitle;
1.2 matthew 164: if (! defined($title) || $title eq '') {
1.40 matthew 165: ($title) = ($res->src =~ m:/([^/]*)$:);
1.2 matthew 166: }
1.27 matthew 167: $seq_str .= '<tr>'.
1.59 bisitz 168: qq{<td><input type="radio" id="$rb_count" name="problemchoice" value="$value"$checked /></td>}.
1.27 matthew 169: '<td><label for="'.$rb_count.'">'.$resptype.'</label></td>'.
170: '<td><label for="'.$rb_count.'">'.$title.'</label>';
1.40 matthew 171: if (scalar(@response_ids) > 1) {
1.2 matthew 172: $seq_str .= &mt('response').' '.$respid;
173: }
1.55 raeburn 174: my $link = $res->link.'?symb='.&escape($res->shown_symb);
1.27 matthew 175: $seq_str .= (' 'x2).
1.56 bisitz 176: '<a target="preview" href="'.$link.'">'.&mt('view').'</a>';
1.2 matthew 177: $seq_str .= "</td></tr>\n";
1.27 matthew 178: $rb_count++;
1.2 matthew 179: }
180: }
181: }
182: }
183: if ($seq_str ne '') {
1.57 bisitz 184: $Str .= '<tr><td> </td>'.
1.50 matthew 185: '<td colspan="2"><b>'.$seq->compTitle.'</b></td>'.
1.2 matthew 186: "</tr>\n".$seq_str;
1.50 matthew 187: if (defined($sequence_addendum)) {
188: $Str .= '<tr>'.
1.57 bisitz 189: ('<td> </td>'x2).
1.50 matthew 190: '<td align="right">'.$sequence_addendum.'</td>'.
191: "</tr>\n";
192: }
1.2 matthew 193: }
194: }
195: $Str .= "</table>\n";
196: return $Str;
197: }
198:
199: ####################################################
200: ####################################################
201:
202: =pod
203:
1.24 matthew 204: =item &MultipleProblemSelector($navmap,$selected,$inputname)
1.21 matthew 205:
206: Generate HTML with checkboxes for problem selection.
207:
208: Input:
209:
210: $navmap: a navmap object. If undef, navmaps will be called to create a
211: new object.
212:
213: $selected: Scalar, Array, or hash reference of currently selected items.
214:
215: $inputname: The name of the form elements to use for the checkboxs.
216:
217: Returns: A string containing html for a table which lists the sequences
218: and their contents. A checkbox is provided for each problem.
219:
220: =cut
221:
222: ####################################################
223: ####################################################
224: sub MultipleProblemSelector {
1.23 matthew 225: my ($navmap,$inputname,$formname)=@_;
1.46 albertel 226: my $cid = $env{'request.course.id'};
1.21 matthew 227: my $Str;
228: # Massage the input as needed.
229: if (! defined($navmap)) {
230: $navmap = Apache::lonnavmaps::navmap->new();
231: if (! defined($navmap)) {
1.56 bisitz 232: $Str .= '<div class="LC_error">'
233: .&mt('Error: cannot process course structure')
234: .'</div>';
1.21 matthew 235: return $Str;
236: }
237: }
238: my $selected = {map { ($_,1) } (&get_selected_symbs($inputname))};
239: # Header
240: $Str .= <<"END";
1.58 bisitz 241: <script type="text/javascript" language="JavaScript">
1.59.12.2! raeburn 242: function checkall(value,seqid,caller) {
! 243: if (caller == 'allproblems') {
! 244: if ((value == null ) || (value == '') || (value == undefined)) {
! 245: if (document.forms.$formname.allproblems.checked) {
! 246: document.forms.$formname.noproblems.checked = false;
! 247: value = true;
! 248: } else {
! 249: return;
! 250: }
! 251: }
! 252: }
! 253: if (caller == 'noproblems') {
! 254: if ((value == null ) || (value == '') || (value == undefined)) {
! 255: if (document.forms.$formname.noproblems.checked) {
! 256: document.forms.$formname.allproblems.checked = false;
! 257: value = false;
! 258: } else {
! 259: return;
! 260: }
! 261: }
! 262: }
1.21 matthew 263: for (i=0; i<document.forms.$formname.elements.length; i++) {
264: ele = document.forms.$formname.elements[i];
265: if (ele.name == '$inputname') {
1.59.12.2! raeburn 266: if ((seqid != null) && (seqid != '') && (seqid != undefined)) {
1.25 matthew 267: itemid = document.forms.$formname.elements[i].id;
268: thing = itemid.split(':');
269: if (thing[0] == seqid) {
270: document.forms.$formname.elements[i].checked=value;
271: }
272: } else {
273: document.forms.$formname.elements[i].checked=value;
274: }
1.21 matthew 275: }
276: }
277: }
278: </script>
279: END
280: $Str .=
1.59.12.2! raeburn 281: '<label><input type="checkbox" name="allproblems" value="true" onclick="javascript:checkall('."'','','allproblems'".')" />'.&mt('Select All').'</label>'.
1.21 matthew 282: (' 'x4).
1.59.12.2! raeburn 283: '<label><input type="checkbox" name="noproblems" value="true" onclick="javascript:checkall('."'','','noproblems'".')" />'.&mt('Unselect All').'</label>';
1.21 matthew 284: $Str .= $/.'<table>'.$/;
1.59.12.1 raeburn 285: my ($iterator,$sequence_string,@Accumulator);
1.25 matthew 286: my $seq_id = 0;
1.59.12.1 raeburn 287: if (&Apache::loncommon::needs_gci_custom()) {
288: my $cdom = $env{'course.'.$cid.'.domain'};
289: my $cnum = $env{'course.'.$cid.'.num'};
290: my $mapurl = "/uploaded/$cdom/$cnum/default_1261144274.sequence";
291: my $map = $navmap->getResourceByUrl($mapurl);
292: my $firstResource = $map->map_start();
293: my $lastResource = $map->map_finish();
1.59.12.2! raeburn 294: $iterator = $navmap->getIterator($firstResource,$lastResource,sub { $_[0]->is_problem() },1);
1.59.12.1 raeburn 295: @Accumulator = (&new_accumulator($map->compTitle,
296: $map->src,
297: $map->symb,
298: $seq_id++,
299: $inputname));
300: } else {
301: $iterator = $navmap->getIterator(undef, undef, undef, 1);
302: @Accumulator = (&new_accumulator($env{'course.'.$cid.'.description'},
303: '',
304: '',
305: $seq_id++,
306: $inputname));
307: }
1.21 matthew 308: my @Sequence_Data;
309: while (my $curRes = $iterator->next()) {
310: if ($curRes == $iterator->END_MAP) {
311: if (ref($Accumulator[-1]) eq 'CODE') {
1.24 matthew 312: my $old_accumulator = pop(@Accumulator);
313: push(@Sequence_Data,&{$old_accumulator}());
1.21 matthew 314: }
315: } elsif ($curRes == $iterator->BEGIN_MAP) {
316: # Not much to do here.
317: }
318: next if (! ref($curRes));
319: if ($curRes->is_map) {
1.24 matthew 320: push(@Accumulator,&new_accumulator($curRes->compTitle,
1.21 matthew 321: $curRes->src,
322: $curRes->symb,
1.25 matthew 323: $seq_id++,
1.21 matthew 324: $inputname));
325: } elsif ($curRes->is_problem) {
1.59.12.2! raeburn 326: my $is_selected;
! 327: if (($env{'form.allproblems'}) || (exists($selected->{$curRes->symb}))) {
! 328: $is_selected = 1;
! 329: }
1.21 matthew 330: if (@Accumulator && $Accumulator[-1] ne '') {
1.59.12.2! raeburn 331: &{$Accumulator[-1]}($curRes,$is_selected);
1.21 matthew 332: }
333: }
334: }
335: my $course_seq = pop(@Sequence_Data);
336: foreach my $seq ($course_seq,@Sequence_Data) {
337: #my $seq = pop(@Sequence_Data);
338: next if (! defined($seq) || ref($seq) ne 'HASH');
339: $Str.= '<tr><td colspan="2">'.
1.25 matthew 340: '<b>'.$seq->{'title'}.'</b>'.(' 'x2).
341: '<a href="javascript:checkall(true,'.$seq->{'id'}.')">'.
342: &mt('Select').'</a>'.(' 'x2).
343: '<a href="javascript:checkall(false,'.$seq->{'id'}.')">'.
344: &mt('Unselect').'</a>'.(' 'x2).
1.21 matthew 345: '</td></tr>'.$/;
346: $Str.= $seq->{'html'};
347: }
348: $Str .= '</table>'.$/;
349: return $Str;
350: }
351:
352: sub new_accumulator {
1.25 matthew 353: my ($title,$src,$symb,$seq_id,$inputname) = @_;
1.21 matthew 354: my $target;
1.25 matthew 355: my $item_id=0;
1.21 matthew 356: return
357: sub {
358: if (@_) {
359: my ($res,$checked) = @_;
1.23 matthew 360: $target.='<tr><td><label>'.
1.21 matthew 361: '<input type="checkbox" name="'.$inputname.'" ';
362: if ($checked) {
1.56 bisitz 363: $target .= 'checked="checked" ';
1.21 matthew 364: }
1.25 matthew 365: $target .= 'id="'.$seq_id.':'.$item_id++.'" ';
1.21 matthew 366: $target.=
1.53 www 367: 'value="'.&escape($res->symb).'" />'.
1.26 matthew 368: ' '.$res->compTitle.'</label>'.
369: (' 'x2).'<a target="preview" '.
1.55 raeburn 370: 'href="'.$res->link.'?symb='.
1.56 bisitz 371: &escape($res->shown_symb).'">'.&mt('view').'</a>'.
1.26 matthew 372: '</td></tr>'.$/;
1.21 matthew 373: } else {
374: if (defined($target)) {
375: return { title => $title,
376: symb => $symb,
377: src => $src,
1.25 matthew 378: id => $seq_id,
1.21 matthew 379: html => $target, };
380: }
381: return undef;
382: }
383: };
384: }
385:
386: sub get_selected_symbs {
387: my ($inputfield) = @_;
388: my $field = 'form.'.$inputfield;
1.48 matthew 389: my @symbs = (map {
1.53 www 390: &unescape($_);
1.48 matthew 391: } &Apache::loncommon::get_env_multiple($field));
392: return @symbs;
1.21 matthew 393: }
394:
395: ####################################################
396: ####################################################
397:
398: =pod
399:
1.2 matthew 400: =item &make_target_id($target)
401:
402: Inputs: Hash ref with the following entries:
403: $target->{'symb'}, $target->{'part'}, $target->{'respid'},
404: $target->{'resptype'}.
405:
406: Returns: A string, suitable for a form parameter, which uniquely identifies
407: the problem, part, and response to do statistical analysis on.
408:
409: Used by Apache::lonstathelpers::ProblemSelector().
410:
411: =cut
412:
413: ####################################################
414: ####################################################
415: sub make_target_id {
416: my ($target) = @_;
1.53 www 417: my $id = &escape($target->{'symb'}).':'.
418: &escape($target->{'part'}).':'.
419: &escape($target->{'respid'}).':'.
420: &escape($target->{'resptype'});
1.2 matthew 421: return $id;
422: }
423:
424: ####################################################
425: ####################################################
426:
427: =pod
428:
429: =item &get_target_from_id($id)
430:
431: Inputs: $id, a scalar string from Apache::lonstathelpers::make_target_id().
432:
433: Returns: A hash reference, $target, containing the following keys:
434: $target->{'symb'}, $target->{'part'}, $target->{'respid'},
435: $target->{'resptype'}.
436:
437: =cut
438:
439: ####################################################
440: ####################################################
441: sub get_target_from_id {
442: my ($id) = @_;
1.21 matthew 443: if (! ref($id)) {
444: my ($symb,$part,$respid,$resptype) = split(':',$id);
1.53 www 445: return ({ symb => &unescape($symb),
446: part => &unescape($part),
447: respid => &unescape($respid),
448: resptype => &unescape($resptype)});
1.21 matthew 449: } elsif (ref($id) eq 'ARRAY') {
450: my @Return;
451: foreach my $selected (@$id) {
452: my ($symb,$part,$respid,$resptype) = split(':',$selected);
1.53 www 453: push(@Return,{ symb => &unescape($symb),
454: part => &unescape($part),
455: respid => &unescape($respid),
456: resptype => &unescape($resptype)});
1.21 matthew 457: }
458: return \@Return;
459: }
1.2 matthew 460: }
461:
462: ####################################################
463: ####################################################
464:
465: =pod
466:
1.13 matthew 467: =item &get_prev_curr_next($target,$AcceptableResponseTypes,$granularity)
1.2 matthew 468:
469: Determine the problem parts or responses preceeding and following the
470: current resource.
471:
472: Inputs: $target (see &Apache::lonstathelpers::get_target_from_id())
473: $AcceptableResponseTypes, regular expression matching acceptable
474: response types,
1.52 albertel 475: $granularity, either 'part', 'response', 'part_survey', or 'part_task'
1.2 matthew 476:
477: Returns: three hash references, $prev, $curr, $next, which refer to the
478: preceeding, current, or following problem parts or responses, depending
479: on the value of $granularity. Values of undef indicate there is no
480: previous or next part/response. A value of undef for all three indicates
481: there was no match found to the current part/resource.
482:
483: The hash references contain the following keys:
484: symb, part, resource
485:
486: If $granularity eq 'response', the following ADDITIONAL keys will be present:
487: respid, resptype
488:
489: =cut
490:
491: ####################################################
492: ####################################################
493: sub get_prev_curr_next {
494: my ($target,$AcceptableResponseTypes,$granularity) = @_;
495: #
496: # Build an array with the data we need to search through
497: my @Resource;
1.40 matthew 498: my ($navmap,@sequences) =
499: &Apache::lonstatistics::selected_sequences_with_assessments('all');
500: return $navmap if (! ref($navmap));
501: foreach my $seq (@sequences) {
502: my @resources = &get_resources($navmap,$seq);
503: foreach my $res (@resources) {
504: foreach my $part (@{$res->parts}) {
505: if ($res->is_survey($part) && ($granularity eq 'part_survey')){
1.20 matthew 506: push (@Resource,
1.40 matthew 507: { symb => $res->symb,
1.20 matthew 508: part => $part,
509: resource => $res,
510: } );
1.52 albertel 511: } elsif ($res->is_task($part) && ($granularity eq 'part_task')){
512: push (@Resource,
513: { symb => $res->symb,
514: part => $part,
515: resource => $res,
516: } );
1.13 matthew 517: } elsif ($granularity eq 'part') {
1.2 matthew 518: push (@Resource,
1.40 matthew 519: { symb => $res->symb,
1.2 matthew 520: part => $part,
521: resource => $res,
522: } );
523: } elsif ($granularity eq 'response') {
1.40 matthew 524: my @response_ids = $res->responseIds($part);
525: my @response_types = $res->responseType($part);
1.2 matthew 526: for (my $i=0;
1.40 matthew 527: $i<scalar(@response_ids);
1.2 matthew 528: $i++){
1.40 matthew 529: my $respid = $response_ids[$i];
530: my $resptype = $response_types[$i];
1.2 matthew 531: next if ($resptype !~ m/$AcceptableResponseTypes/);
532: push (@Resource,
1.40 matthew 533: { symb => $res->symb,
1.2 matthew 534: part => $part,
1.40 matthew 535: respid => $respid,
536: resptype => $resptype,
1.2 matthew 537: resource => $res,
538: } );
539: }
540: }
541: }
542: }
543: }
544: #
545: # Get the index of the current situation
546: my $curr_idx;
547: for ($curr_idx=0;$curr_idx<$#Resource;$curr_idx++) {
548: my $curr_item = $Resource[$curr_idx];
1.52 albertel 549: if ($granularity =~ /^(part|part_survey|part_task)$/) {
1.2 matthew 550: if ($curr_item->{'symb'} eq $target->{'symb'} &&
551: $curr_item->{'part'} eq $target->{'part'}) {
552: last;
553: }
554: } elsif ($granularity eq 'response') {
555: if ($curr_item->{'symb'} eq $target->{'symb'} &&
556: $curr_item->{'part'} eq $target->{'part'} &&
557: $curr_item->{'respid'} eq $target->{'respid'} &&
558: $curr_item->{'resptype'} eq $target->{'resptype'}) {
559: last;
560: }
561: }
562: }
563: my $curr_item = $Resource[$curr_idx];
1.52 albertel 564: if ($granularity =~ /^(part|part_survey|part_task)$/) {
1.2 matthew 565: if ($curr_item->{'symb'} ne $target->{'symb'} ||
566: $curr_item->{'part'} ne $target->{'part'}) {
567: # bogus symb - return nothing
568: return (undef,undef,undef);
569: }
570: } elsif ($granularity eq 'response') {
571: if ($curr_item->{'symb'} ne $target->{'symb'} ||
572: $curr_item->{'part'} ne $target->{'part'} ||
573: $curr_item->{'respid'} ne $target->{'respid'} ||
574: $curr_item->{'resptype'} ne $target->{'resptype'}){
575: # bogus symb - return nothing
576: return (undef,undef,undef);
577: }
578: }
579: #
580: # Now just pick up the data we need
581: my ($prev,$curr,$next);
582: if ($curr_idx == 0) {
583: $prev = undef;
584: $curr = $Resource[$curr_idx ];
585: $next = $Resource[$curr_idx+1];
586: } elsif ($curr_idx == $#Resource) {
587: $prev = $Resource[$curr_idx-1];
588: $curr = $Resource[$curr_idx ];
589: $next = undef;
590: } else {
591: $prev = $Resource[$curr_idx-1];
592: $curr = $Resource[$curr_idx ];
593: $next = $Resource[$curr_idx+1];
594: }
1.40 matthew 595: return ($navmap,$prev,$curr,$next);
1.4 matthew 596: }
597:
1.9 matthew 598:
599: #####################################################
600: #####################################################
601:
602: =pod
603:
604: =item GetStudentAnswers($r,$problem,$Students)
605:
606: Determines the correct answer for a set of students on a given problem.
607: The students answers are stored in the student hashes pointed to by the
608: array @$Students under the key 'answer'.
609:
610: Inputs: $r
611: $problem: hash reference containing the keys 'resource', 'part', and 'respid'.
612: $Students: reference to array containing student hashes (need 'username',
613: 'domain').
614:
615: Returns: nothing
616:
617: =cut
618:
619: #####################################################
620: #####################################################
621: sub GetStudentAnswers {
1.12 matthew 622: my ($r,$problem,$Students,$formname,$inputname) = @_;
1.31 matthew 623: my %answers;
1.12 matthew 624: my $status_type;
625: if (defined($formname)) {
626: $status_type = 'inline';
627: } else {
628: $status_type = 'popup';
629: }
1.9 matthew 630: my $c = $r->connection();
631: my %Answers;
632: my ($resource,$partid,$respid) = ($problem->{'resource'},
633: $problem->{'part'},
634: $problem->{'respid'});
635: # Read in the cache (if it exists) before we start timing things.
636: &Apache::lonstathelpers::ensure_proper_cache($resource->{'symb'});
637: # Open progress window
638: my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
639: ($r,'Student Answer Compilation Status',
1.12 matthew 640: 'Student Answer Compilation Progress', scalar(@$Students),
641: $status_type,undef,$formname,$inputname);
1.9 matthew 642: $r->rflush();
643: foreach my $student (@$Students) {
644: last if ($c->aborted());
645: my $sname = $student->{'username'};
646: my $sdom = $student->{'domain'};
1.30 matthew 647: my $answer = &Apache::lonstathelpers::get_student_answer
1.9 matthew 648: ($resource,$sname,$sdom,$partid,$respid);
649: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
650: &mt('last student'));
1.31 matthew 651: $answers{$answer}++;
1.9 matthew 652: $student->{'answer'} = $answer;
653: }
1.29 matthew 654: &Apache::lonstathelpers::write_analysis_cache();
1.9 matthew 655: return if ($c->aborted());
656: $r->rflush();
657: # close progress window
658: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
1.31 matthew 659: return \%answers;
1.9 matthew 660: }
1.4 matthew 661:
662: #####################################################
663: #####################################################
664:
665: =pod
666:
667: =item analyze_problem_as_student
668:
1.30 matthew 669: Analyzes a homework problem for a student
1.4 matthew 670:
671: Inputs: $resource: a resource object
672: $sname, $sdom, $partid, $respid
673:
1.30 matthew 674: Returns: the problem analysis hash
1.6 matthew 675:
1.4 matthew 676: =cut
677:
678: #####################################################
679: #####################################################
680: sub analyze_problem_as_student {
1.30 matthew 681: my ($resource,$sname,$sdom) = @_;
1.22 matthew 682: if (ref($resource) ne 'HASH') {
683: my $res = $resource;
684: $resource = { 'src' => $res->src,
685: 'symb' => $res->symb,
686: 'parts' => $res->parts };
687: foreach my $part (@{$resource->{'parts'}}) {
688: $resource->{'partdata'}->{$part}->{'ResponseIds'}=
689: [$res->responseIds($part)];
690: }
691: }
1.4 matthew 692: my $url = $resource->{'src'};
693: my $symb = $resource->{'symb'};
1.29 matthew 694: my $analysis = &get_from_analysis_cache($sname,$sdom,$symb);
695: if (! defined($analysis)) {
1.46 albertel 696: my $courseid = $env{'request.course.id'};
1.29 matthew 697: my $Answ=&Apache::lonnet::ssi($url,('grade_target' => 'analyze',
698: 'grade_domain' => $sdom,
699: 'grade_username' => $sname,
700: 'grade_symb' => $symb,
701: 'grade_courseid' => $courseid));
702: (my $garbage,$analysis)=split(/_HASH_REF__/,$Answ,2);
703: &store_analysis($sname,$sdom,$symb,$analysis);
704: }
705: my %Answer=&Apache::lonnet::str2hash($analysis);
1.6 matthew 706: #
1.30 matthew 707: return \%Answer;
708: }
709:
710: #####################################################
711: #####################################################
712:
713: =pod
714:
715: =item get_student_answer
716:
717: Analyzes a homework problem for a particular student and returns the correct
718: answer. Attempts to put together an answer for problem types
719: that do not natively support it.
720:
721: Inputs: $resource: a resource object (from navmaps or hash from loncoursedata)
722: $sname, $sdom, $partid, $respid
723:
724: Returns: $answer
725:
726: If $partid and $respid are specified, $answer is simply a scalar containing
727: the correct answer for the response.
728:
729: If $partid or $respid are undefined, $answer will be a hash reference with
730: keys $partid.'.'.$respid.'.answer'.
731:
732: =cut
733:
734: #####################################################
735: #####################################################
736: sub get_student_answer {
737: my ($resource,$sname,$sdom,$partid,$respid) = @_;
738: #
739: if (ref($resource) ne 'HASH') {
740: my $res = $resource;
741: $resource = { 'src' => $res->src,
742: 'symb' => $res->symb,
743: 'parts' => $res->parts };
744: foreach my $part (@{$resource->{'parts'}}) {
745: $resource->{'partdata'}->{$part}->{'ResponseIds'}=
746: [$res->responseIds($part)];
747: }
748: }
749: #
750: my $analysis =
751: &analyze_problem_as_student($resource,$sname,$sdom);
1.29 matthew 752: my $answer;
1.8 matthew 753: foreach my $partid (@{$resource->{'parts'}}) {
1.6 matthew 754: my $partdata = $resource->{'partdata'}->{$partid};
755: foreach my $respid (@{$partdata->{'ResponseIds'}}) {
756: my $prefix = $partid.'.'.$respid;
757: my $key = $prefix.'.answer';
1.30 matthew 758: $answer->{$partid}->{$respid} =
759: &get_answer($prefix,$key,%$analysis);
1.6 matthew 760: }
1.8 matthew 761: }
1.30 matthew 762: my $returnvalue;
1.8 matthew 763: if (! defined($partid)) {
764: $returnvalue = $answer;
765: } elsif (! defined($respid)) {
766: $returnvalue = $answer->{$partid};
1.6 matthew 767: } else {
1.8 matthew 768: $returnvalue = $answer->{$partid}->{$respid};
1.6 matthew 769: }
770: return $returnvalue;
771: }
772:
773: sub get_answer {
774: my ($prefix,$key,%Answer) = @_;
775: my $returnvalue;
1.4 matthew 776: if (exists($Answer{$key})) {
1.54 albertel 777: if (ref($Answer{$key}) eq 'HASH') {
778: my $which = 'INTERNAL';
779: if (!exists($Answer{$key}{$which})) {
780: $which = (sort(keys(%{ $Answer{$key} })))[0];
781: }
782: my $student_answer = $Answer{$key}{$which}[0][0];
783: $returnvalue = $student_answer;
784: } else {
785: &Apache::lonnet::logthis("error analyzing problem. got a answer of type ".ref($Answer{$key}));
786: }
1.4 matthew 787: } else {
788: if (exists($Answer{$prefix.'.shown'})) {
789: # The response has foils
790: my %values;
791: while (my ($k,$v) = each(%Answer)) {
792: next if ($k !~ /^$prefix\.foil\.(value|area)\.(.*)$/);
793: my $foilname = $2;
794: $values{$foilname}=$v;
795: }
796: foreach my $foil (@{$Answer{$prefix.'.shown'}}) {
797: if (ref($values{$foil}) eq 'ARRAY') {
1.10 albertel 798: $returnvalue.=&HTML::Entities::encode($foil,'<>&"').'='.
799: join(',',map {&HTML::Entities::encode($_,'<>&"')} @{$values{$foil}}).'&';
1.4 matthew 800: } else {
1.10 albertel 801: $returnvalue.=&HTML::Entities::encode($foil,'<>&"').'='.
802: &HTML::Entities::encode($values{$foil},'<>&"').'&';
1.4 matthew 803: }
804: }
805: $returnvalue =~ s/ /\%20/g;
806: chop ($returnvalue);
807: }
808: }
809: return $returnvalue;
810: }
1.8 matthew 811:
812: #####################################################
813: #####################################################
814:
815: =pod
816:
817: =item Caching routines
818:
819: =over 4
820:
1.29 matthew 821: =item &load_analysis_cache($symb)
1.8 matthew 822:
823: Loads the cache for the given symb into memory from disk.
824: Requires the cache filename be set.
825: Only should be called by &ensure_proper_cache.
826:
827: =cut
828:
829: #####################################################
830: #####################################################
831: {
832: my $cache_filename = undef;
833: my $current_symb = undef;
834: my %cache;
835:
1.29 matthew 836: sub load_analysis_cache {
1.8 matthew 837: my ($symb) = @_;
838: return if (! defined($cache_filename));
839: if (! defined($current_symb) || $current_symb ne $symb) {
840: undef(%cache);
841: my $storedstring;
842: my %cache_db;
843: if (tie(%cache_db,'GDBM_File',$cache_filename,&GDBM_READER(),0640)) {
1.53 www 844: $storedstring = $cache_db{&escape($symb)};
1.8 matthew 845: untie(%cache_db);
846: }
847: if (defined($storedstring)) {
848: %cache = %{thaw($storedstring)};
849: }
850: }
851: return;
852: }
853:
854: #####################################################
855: #####################################################
856:
857: =pod
858:
1.29 matthew 859: =item &get_from_analysis_cache($sname,$sdom,$symb,$partid,$respid)
1.8 matthew 860:
861: Returns the appropriate data from the cache, or undef if no data exists.
862:
863: =cut
864:
865: #####################################################
866: #####################################################
1.29 matthew 867: sub get_from_analysis_cache {
868: my ($sname,$sdom,$symb) = @_;
1.8 matthew 869: &ensure_proper_cache($symb);
870: my $returnvalue;
1.29 matthew 871: if (exists($cache{$sname.':'.$sdom})) {
872: $returnvalue = $cache{$sname.':'.$sdom};
1.8 matthew 873: } else {
874: $returnvalue = undef;
875: }
876: return $returnvalue;
877: }
878:
879: #####################################################
880: #####################################################
881:
882: =pod
883:
1.29 matthew 884: =item &write_analysis_cache($symb)
1.8 matthew 885:
886: Writes the in memory cache to disk so that it can be read in with
1.29 matthew 887: &load_analysis_cache($symb).
1.8 matthew 888:
889: =cut
890:
891: #####################################################
892: #####################################################
1.29 matthew 893: sub write_analysis_cache {
1.8 matthew 894: return if (! defined($current_symb) || ! defined($cache_filename));
895: my %cache_db;
1.53 www 896: my $key = &escape($current_symb);
1.8 matthew 897: if (tie(%cache_db,'GDBM_File',$cache_filename,&GDBM_WRCREAT(),0640)) {
898: my $storestring = freeze(\%cache);
899: $cache_db{$key}=$storestring;
900: $cache_db{$key.'.time'}=time;
901: untie(%cache_db);
902: }
903: undef(%cache);
904: undef($current_symb);
905: undef($cache_filename);
906: return;
907: }
908:
909: #####################################################
910: #####################################################
911:
912: =pod
913:
914: =item &ensure_proper_cache($symb)
915:
916: Called to make sure we have the proper cache set up. This is called
1.29 matthew 917: prior to every analysis lookup.
1.8 matthew 918:
919: =cut
920:
921: #####################################################
922: #####################################################
923: sub ensure_proper_cache {
924: my ($symb) = @_;
1.46 albertel 925: my $cid = $env{'request.course.id'};
1.8 matthew 926: my $new_filename = '/home/httpd/perl/tmp/'.
1.29 matthew 927: 'problemanalysis_'.$cid.'_analysis_cache.db';
1.8 matthew 928: if (! defined($cache_filename) ||
929: $cache_filename ne $new_filename ||
930: ! defined($current_symb) ||
931: $current_symb ne $symb) {
932: $cache_filename = $new_filename;
933: # Notice: $current_symb is not set to $symb until after the cache is
1.29 matthew 934: # loaded. This is what tells &load_analysis_cache to load in a new
1.8 matthew 935: # symb cache.
1.29 matthew 936: &load_analysis_cache($symb);
1.8 matthew 937: $current_symb = $symb;
938: }
939: }
940:
941: #####################################################
942: #####################################################
943:
944: =pod
945:
1.29 matthew 946: =item &store_analysis($sname,$sdom,$symb,$partid,$respid,$dataset)
1.8 matthew 947:
1.29 matthew 948: Stores the analysis data in the in memory cache.
1.8 matthew 949:
950: =cut
951:
952: #####################################################
953: #####################################################
1.29 matthew 954: sub store_analysis {
955: my ($sname,$sdom,$symb,$dataset) = @_;
1.8 matthew 956: return if ($symb ne $current_symb);
1.29 matthew 957: $cache{$sname.':'.$sdom}=$dataset;
1.8 matthew 958: return;
959: }
960:
961: }
962: #####################################################
963: #####################################################
964:
965: =pod
966:
967: =back
968:
969: =cut
970:
971: #####################################################
972: #####################################################
1.4 matthew 973:
974: ##
975: ## The following is copied from datecalc1.pl, part of the
976: ## Spreadsheet::WriteExcel CPAN module.
977: ##
978: ##
979: ######################################################################
980: #
981: # Demonstration of writing date/time cells to Excel spreadsheets,
982: # using UNIX/Perl time as source of date/time.
983: #
984: # Copyright 2000, Andrew Benham, adsb@bigfoot.com
985: #
986: ######################################################################
987: #
988: # UNIX/Perl time is the time since the Epoch (00:00:00 GMT, 1 Jan 1970)
989: # measured in seconds.
990: #
991: # An Excel file can use exactly one of two different date/time systems.
992: # In these systems, a floating point number represents the number of days
993: # (and fractional parts of the day) since a start point. The floating point
994: # number is referred to as a 'serial'.
995: # The two systems ('1900' and '1904') use different starting points:
996: # '1900'; '1.00' is 1 Jan 1900 BUT 1900 is erroneously regarded as
997: # a leap year - see:
998: # http://support.microsoft.com/support/kb/articles/Q181/3/70.asp
999: # for the excuse^H^H^H^H^H^Hreason.
1000: # '1904'; '1.00' is 2 Jan 1904.
1001: #
1002: # The '1904' system is the default for Apple Macs. Windows versions of
1003: # Excel have the option to use the '1904' system.
1004: #
1005: # Note that Visual Basic's "DateSerial" function does NOT erroneously
1006: # regard 1900 as a leap year, and thus its serials do not agree with
1007: # the 1900 serials of Excel for dates before 1 Mar 1900.
1008: #
1009: # Note that StarOffice (at least at version 5.2) does NOT erroneously
1010: # regard 1900 as a leap year, and thus its serials do not agree with
1011: # the 1900 serials of Excel for dates before 1 Mar 1900.
1012: #
1013: ######################################################################
1014: #
1015: # Calculation description
1016: # =======================
1017: #
1018: # 1900 system
1019: # -----------
1020: # Unix time is '0' at 00:00:00 GMT 1 Jan 1970, i.e. 70 years after 1 Jan 1900.
1021: # Of those 70 years, 17 (1904,08,12,16,20,24,28,32,36,40,44,48,52,56,60,64,68)
1022: # were leap years with an extra day.
1023: # Thus there were 17 + 70*365 days = 25567 days between 1 Jan 1900 and
1024: # 1 Jan 1970.
1025: # In the 1900 system, '1' is 1 Jan 1900, but as 1900 was not a leap year
1026: # 1 Jan 1900 should really be '2', so 1 Jan 1970 is '25569'.
1027: #
1028: # 1904 system
1029: # -----------
1030: # Unix time is '0' at 00:00:00 GMT 1 Jan 1970, i.e. 66 years after 1 Jan 1904.
1031: # Of those 66 years, 17 (1904,08,12,16,20,24,28,32,36,40,44,48,52,56,60,64,68)
1032: # were leap years with an extra day.
1033: # Thus there were 17 + 66*365 days = 24107 days between 1 Jan 1904 and
1034: # 1 Jan 1970.
1035: # In the 1904 system, 2 Jan 1904 being '1', 1 Jan 1970 is '24107'.
1036: #
1037: ######################################################################
1038: #
1039: # Copyright (c) 2000, Andrew Benham.
1040: # This program is free software. It may be used, redistributed and/or
1041: # modified under the same terms as Perl itself.
1042: #
1043: # Andrew Benham, adsb@bigfoot.com
1044: # London, United Kingdom
1045: # 11 Nov 2000
1046: #
1047: ######################################################################
1048: #-----------------------------------------------------------
1049: # calc_serial()
1050: #
1051: # Called with (up to) 2 parameters.
1052: # 1. Unix timestamp. If omitted, uses current time.
1053: # 2. GMT flag. Set to '1' to return serial in GMT.
1054: # If omitted, returns serial in appropriate timezone.
1055: #
1056: # Returns date/time serial according to $DATE_SYSTEM selected
1057: #-----------------------------------------------------------
1058: sub calc_serial {
1059: # Use 1900 date system on all platforms other than Apple Mac (for which
1060: # use 1904 date system).
1061: my $DATE_SYSTEM = ($^O eq 'MacOS') ? 1 : 0;
1062: my $time = (defined $_[0]) ? $_[0] : time();
1063: my $gmtflag = (defined $_[1]) ? $_[1] : 0;
1064: #
1065: # Divide timestamp by number of seconds in a day.
1066: # This gives a date serial with '0' on 1 Jan 1970.
1067: my $serial = $time / 86400;
1068: #
1069: # Adjust the date serial by the offset appropriate to the
1070: # currently selected system (1900/1904).
1071: if ($DATE_SYSTEM == 0) { # use 1900 system
1072: $serial += 25569;
1073: } else { # use 1904 system
1074: $serial += 24107;
1075: }
1076: #
1077: unless ($gmtflag) {
1078: # Now have a 'raw' serial with the right offset. But this
1079: # gives a serial in GMT, which is false unless the timezone
1080: # is GMT. We need to adjust the serial by the appropriate
1081: # timezone offset.
1082: # Calculate the appropriate timezone offset by seeing what
1083: # the differences between localtime and gmtime for the given
1084: # time are.
1085: #
1086: my @gmtime = gmtime($time);
1087: my @ltime = localtime($time);
1088: #
1089: # For the first 7 elements of the two arrays, adjust the
1090: # date serial where the elements differ.
1091: for (0 .. 6) {
1092: my $diff = $ltime[$_] - $gmtime[$_];
1093: if ($diff) {
1094: $serial += _adjustment($diff,$_);
1095: }
1096: }
1097: }
1098: #
1099: # Perpetuate the error that 1900 was a leap year by decrementing
1100: # the serial if we're using the 1900 system and the date is prior to
1101: # 1 Mar 1900. This has the effect of making serial value '60'
1102: # 29 Feb 1900.
1103: #
1104: # This fix only has any effect if UNIX/Perl time on the platform
1105: # can represent 1900. Many can't.
1106: #
1107: unless ($DATE_SYSTEM) {
1108: $serial-- if ($serial < 61); # '61' is 1 Mar 1900
1109: }
1110: return $serial;
1111: }
1112:
1113: sub _adjustment {
1114: # Based on the difference in the localtime/gmtime array elements
1115: # number, return the adjustment required to the serial.
1116: #
1117: # We only look at some elements of the localtime/gmtime arrays:
1118: # seconds unlikely to be different as all known timezones
1119: # have an offset of integral multiples of 15 minutes,
1120: # but it's easy to do.
1121: # minutes will be different for timezone offsets which are
1122: # not an exact number of hours.
1123: # hours very likely to be different.
1124: # weekday will differ when localtime/gmtime difference
1125: # straddles midnight.
1126: #
1127: # Assume that difference between localtime and gmtime is less than
1128: # 5 days, then don't have to do maths for day of month, month number,
1129: # year number, etc...
1130: #
1131: my ($delta,$element) = @_;
1132: my $adjust = 0;
1133: #
1134: if ($element == 0) { # Seconds
1135: $adjust = $delta/86400; # 60 * 60 * 24
1136: } elsif ($element == 1) { # Minutes
1137: $adjust = $delta/1440; # 60 * 24
1138: } elsif ($element == 2) { # Hours
1139: $adjust = $delta/24; # 24
1140: } elsif ($element == 6) { # Day of week number
1141: # Catch difference straddling Sat/Sun in either direction
1142: $delta += 7 if ($delta < -4);
1143: $delta -= 7 if ($delta > 4);
1144: #
1145: $adjust = $delta;
1146: }
1147: return $adjust;
1148: }
1149:
1150: ###########################################################
1151: ###########################################################
1152:
1153: =pod
1154:
1155: =item get_problem_data
1156:
1157: Returns a data structure describing the problem.
1158:
1159: Inputs: $url
1160:
1161: Returns: %Partdata
1162:
1163: =cut
1164:
1165: ## note: we must force each foil and option to not begin or end with
1166: ## spaces as they are stored without such data.
1167: ##
1168: ###########################################################
1169: ###########################################################
1170: sub get_problem_data {
1171: my ($url) = @_;
1172: my $Answ=&Apache::lonnet::ssi($url,('grade_target' => 'analyze'));
1173: (my $garbage,$Answ)=split(/_HASH_REF__/,$Answ,2);
1174: my %Answer;
1175: %Answer=&Apache::lonnet::str2hash($Answ);
1176: my %Partdata;
1177: foreach my $part (@{$Answer{'parts'}}) {
1178: while (my($key,$value) = each(%Answer)) {
1179: #
1180: # Logging code:
1.7 matthew 1181: if (0) {
1.4 matthew 1182: &Apache::lonnet::logthis($part.' got key "'.$key.'"');
1183: if (ref($value) eq 'ARRAY') {
1184: &Apache::lonnet::logthis(' @'.join(',',@$value));
1185: } else {
1186: &Apache::lonnet::logthis(' '.$value);
1187: }
1188: }
1189: # End of logging code
1.51 albertel 1190: next if ($key !~ /^\Q$part\E/);
1191: $key =~ s/^\Q$part\E\.//;
1.4 matthew 1192: if (ref($value) eq 'ARRAY') {
1193: if ($key eq 'options') {
1194: $Partdata{$part}->{'_Options'}=$value;
1195: } elsif ($key eq 'concepts') {
1196: $Partdata{$part}->{'_Concepts'}=$value;
1.28 matthew 1197: } elsif ($key eq 'items') {
1198: $Partdata{$part}->{'_Items'}=$value;
1.4 matthew 1199: } elsif ($key =~ /^concept\.(.*)$/) {
1200: my $concept = $1;
1201: foreach my $foil (@$value) {
1202: $Partdata{$part}->{'_Foils'}->{$foil}->{'_Concept'}=
1203: $concept;
1204: }
1.32 matthew 1205: } elsif ($key =~ /^(unit|incorrect|answer|ans_low|ans_high|str_type)$/) {
1.4 matthew 1206: $Partdata{$part}->{$key}=$value;
1207: }
1208: } else {
1209: if ($key=~ /^foil\.text\.(.*)$/) {
1210: my $foil = $1;
1211: $Partdata{$part}->{'_Foils'}->{$foil}->{'name'}=$foil;
1212: $value =~ s/(\s*$|^\s*)//g;
1213: $Partdata{$part}->{'_Foils'}->{$foil}->{'text'}=$value;
1214: } elsif ($key =~ /^foil\.value\.(.*)$/) {
1215: my $foil = $1;
1216: $Partdata{$part}->{'_Foils'}->{$foil}->{'value'}=$value;
1.28 matthew 1217: } elsif ($key eq 'answercomputed') {
1218: $Partdata{$part}->{'answercomputed'} = $value;
1.4 matthew 1219: }
1220: }
1221: }
1222: }
1.28 matthew 1223: # Further debugging code
1224: if (0) {
1225: &Apache::lonnet::logthis('lonstathelpers::get_problem_data');
1226: &log_hash_ref(\%Partdata);
1227: }
1.4 matthew 1228: return %Partdata;
1.5 matthew 1229: }
1230:
1.28 matthew 1231: sub log_array_ref {
1232: my ($arrayref,$prefix) = @_;
1233: return if (ref($arrayref) ne 'ARRAY');
1234: if (! defined($prefix)) { $prefix = ''; };
1235: foreach my $v (@$arrayref) {
1236: if (ref($v) eq 'ARRAY') {
1237: &log_array_ref($v,$prefix.' ');
1238: } elsif (ref($v) eq 'HASH') {
1239: &log_hash_ref($v,$prefix.' ');
1240: } else {
1241: &Apache::lonnet::logthis($prefix.'"'.$v.'"');
1242: }
1243: }
1244: }
1245:
1246: sub log_hash_ref {
1247: my ($hashref,$prefix) = @_;
1248: return if (ref($hashref) ne 'HASH');
1249: if (! defined($prefix)) { $prefix = ''; };
1250: while (my ($k,$v) = each(%$hashref)) {
1251: if (ref($v) eq 'ARRAY') {
1252: &Apache::lonnet::logthis($prefix.'"'.$k.'" = array');
1253: &log_array_ref($v,$prefix.' ');
1254: } elsif (ref($v) eq 'HASH') {
1255: &Apache::lonnet::logthis($prefix.'"'.$k.'" = hash');
1256: &log_hash_ref($v,$prefix.' ');
1257: } else {
1258: &Apache::lonnet::logthis($prefix.'"'.$k.'" => "'.$v.'"');
1259: }
1260: }
1261: }
1.5 matthew 1262: ####################################################
1263: ####################################################
1264:
1265: =pod
1266:
1267: =item &limit_by_time()
1268:
1269: =cut
1270:
1271: ####################################################
1272: ####################################################
1273: sub limit_by_time_form {
1274: my $Starttime_form = '';
1275: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
1276: ('limitby_startdate');
1277: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
1278: ('limitby_enddate');
1279: if (! defined($endtime)) {
1280: $endtime = time;
1281: }
1282: if (! defined($starttime)) {
1283: $starttime = $endtime - 60*60*24*7;
1284: }
1285: my $state;
1286: if (&limit_by_time()) {
1287: $state = '';
1288: } else {
1289: $state = 'disabled';
1290: }
1291: my $startdateform = &Apache::lonhtmlcommon::date_setter
1292: ('Statistics','limitby_startdate',$starttime,undef,undef,$state);
1293: my $enddateform = &Apache::lonhtmlcommon::date_setter
1294: ('Statistics','limitby_enddate',$endtime,undef,undef,$state);
1295: my $Str;
1.58 bisitz 1296: $Str .= '<script type="text/javascript" language="JavaScript">';
1.5 matthew 1297: $Str .= 'function toggle_limitby_activity(state) {';
1298: $Str .= ' if (state) {';
1299: $Str .= ' limitby_startdate_enable();';
1300: $Str .= ' limitby_enddate_enable();';
1301: $Str .= ' } else {';
1302: $Str .= ' limitby_startdate_disable();';
1303: $Str .= ' limitby_enddate_disable();';
1304: $Str .= ' }';
1305: $Str .= '}';
1306: $Str .= '</script>';
1307: $Str .= '<fieldset>';
1308: my $timecheckbox = '<input type="checkbox" name="limit_by_time" ';
1309: if (&limit_by_time()) {
1310: $timecheckbox .= ' checked ';
1311: }
1312: $timecheckbox .= 'OnChange="javascript:toggle_limitby_activity(this.checked);" ';
1313: $timecheckbox .= ' />';
1.49 albertel 1314: $Str .= '<legend><label>'.&mt('[_1] Limit by time',$timecheckbox).'</label></legend>';
1.5 matthew 1315: $Str .= &mt('Start Time: [_1]',$startdateform).'<br />';
1316: $Str .= &mt(' End Time: [_1]',$enddateform).'<br />';
1317: $Str .= '</fieldset>';
1318: return $Str;
1319: }
1320:
1321: sub limit_by_time {
1.46 albertel 1322: if (exists($env{'form.limit_by_time'}) &&
1323: $env{'form.limit_by_time'} ne '' ) {
1.5 matthew 1324: return 1;
1325: } else {
1326: return 0;
1327: }
1328: }
1329:
1330: sub get_time_limits {
1331: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
1332: ('limitby_startdate');
1333: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
1334: ('limitby_enddate');
1335: return ($starttime,$endtime);
1.11 matthew 1336: }
1337:
1.2 matthew 1338: ####################################################
1339: ####################################################
1340:
1341: =pod
1342:
1.12 matthew 1343: =item &manage_caches
1344:
1345: Inputs: $r, apache request object
1346:
1347: Returns: An array of scalars containing html for buttons.
1348:
1349: =cut
1350:
1351: ####################################################
1352: ####################################################
1353: sub manage_caches {
1.23 matthew 1354: my ($r,$formname,$inputname,$update_message) = @_;
1.12 matthew 1355: &Apache::loncoursedata::clear_internal_caches();
1.16 matthew 1356: my $sectionkey =
1357: join(',',
1358: map {
1.53 www 1359: &escape($_);
1.44 matthew 1360: } sort(&Apache::lonstatistics::get_selected_sections())
1.16 matthew 1361: );
1362: my $statuskey = $Apache::lonstatistics::enrollment_status;
1.46 albertel 1363: if (exists($env{'form.ClearCache'}) ||
1364: exists($env{'form.updatecaches'}) ||
1365: (exists($env{'form.firstrun'}) && $env{'form.firstrun'} ne 'no') ||
1366: (exists($env{'form.prevsection'}) &&
1367: $env{'form.prevsection'} ne $sectionkey) ||
1368: (exists($env{'form.prevenrollstatus'}) &&
1369: $env{'form.prevenrollstatus'} ne $statuskey)
1.16 matthew 1370: ) {
1.23 matthew 1371: if (defined($update_message)) {
1372: $r->print($update_message);
1373: }
1.40 matthew 1374: if (0) {
1375: &Apache::lonnet::logthis('Updating mysql student data caches');
1376: }
1.36 matthew 1377: &gather_full_student_data($r,$formname,$inputname);
1.12 matthew 1378: }
1379: #
1.16 matthew 1380: my @Buttons =
1381: ('<input type="submit" name="ClearCache" '.
1382: 'value="'.&mt('Clear Caches').'" />',
1383: '<input type="submit" name="updatecaches" '.
1.17 matthew 1384: 'value="'.&mt('Update Caches').'" />'.
1385: &Apache::loncommon::help_open_topic('Statistics_Cache'),
1.16 matthew 1386: '<input type="hidden" name="prevsection" value="'.$sectionkey.'" />',
1387: '<input type="hidden" name="prevenrollstatus" value="'.$statuskey.'" />'
1388: );
1389: #
1.46 albertel 1390: if (! exists($env{'form.firstrun'})) {
1.12 matthew 1391: $r->print('<input type="hidden" name="firstrun" value="yes" />');
1392: } else {
1393: $r->print('<input type="hidden" name="firstrun" value="no" />');
1394: }
1395: #
1396: return @Buttons;
1397: }
1398:
1.36 matthew 1399: sub gather_full_student_data {
1400: my ($r,$formname,$inputname) = @_;
1401: my $status_type;
1402: if (defined($formname)) {
1403: $status_type = 'inline';
1404: } else {
1405: $status_type = 'popup';
1406: }
1407: my $c = $r->connection();
1408: #
1409: &Apache::loncoursedata::clear_internal_caches();
1410: #
1411: my @Students = @Apache::lonstatistics::Students;
1412: #
1413: # Open the progress window
1414: my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
1415: ($r,&mt('Student Data Compilation Status'),
1416: &mt('Student Data Compilation Progress'), scalar(@Students),
1417: $status_type,undef,$formname,$inputname);
1418: #
1419: while (my $student = shift @Students) {
1420: return if ($c->aborted());
1421: my $status = &Apache::loncoursedata::ensure_current_full_data
1422: ($student->{'username'},$student->{'domain'},
1.46 albertel 1423: $env{'request.course.id'});
1.36 matthew 1424: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
1425: &mt('last student'));
1426: }
1427: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
1428: $r->rflush();
1429: return;
1430: }
1.12 matthew 1431:
1.38 matthew 1432: ####################################################
1433: ####################################################
1434:
1435: =pod
1436:
1437: =item &submission_report_form
1438:
1439: Input: The originating reportSelected value for the current stats page.
1440:
1441: Output: Scalar containing HTML with needed form elements and a link to
1442: the student submission reports page.
1443:
1444: =cut
1445:
1446: ####################################################
1447: ####################################################
1448: sub submission_report_form {
1449: my ($original_report) = @_;
1450: # Note: In the link below we change the reportSelected value. If
1451: # the user hits the 'back' button on the browser after getting their
1452: # student submissions report, this value may still be around. So we
1453: # output a script block to set it properly. If the $original_report
1454: # value is unset, you are just asking for trouble.
1455: if (! defined($original_report)) {
1456: &Apache::lonnet::logthis
1457: ('someone called lonstathelpers::submission_report_form without '.
1458: ' enough input.');
1459: }
1460: my $html = $/.
1.58 bisitz 1461: '<script type="text/javascript" language="JavaScript">'.
1.38 matthew 1462: "document.Statistics.reportSelected.value='$original_report';".
1463: '</script>'.
1464: '<input type="hidden" name="correctans" value="true" />'.
1465: '<input type="hidden" name="prob_status" value="true" />'.
1466: '<input type="hidden" name="all_sub" value="true" />';
1467: my $output_selector = $/.'<select name="output">'.$/;
1468: foreach ('HTML','Excel','CSV') {
1469: $output_selector .= ' <option value="'.lc($_).'"';
1.46 albertel 1470: if ($env{'form.output'} eq lc($_)) {
1.38 matthew 1471: $output_selector .= ' selected ';
1472: }
1473: $output_selector .='>'.&mt($_).'</option>'.$/;
1474: }
1475: $output_selector .= '</select>'.$/;
1476: my $link = '<a href="javascript:'.
1477: q{document.Statistics.reportSelected.value='student_submission_reports';}.
1478: 'document.Statistics.submit();">';
1479: $html.= &mt('View data as [_1] [_2]go[_3]',$output_selector,
1480: $link,'</a>').$/;
1481: return $html
1482: }
1.12 matthew 1483:
1484: ####################################################
1485: ####################################################
1486:
1487: =pod
1488:
1.2 matthew 1489: =back
1490:
1491: =cut
1492:
1493: ####################################################
1494: ####################################################
1.1 matthew 1495:
1496: 1;
1497:
1498: __END__
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