Annotation of loncom/interface/lonexttool.pm, revision 1.12
1.1 raeburn 1: # The LearningOnline Network with CAPA
2: # Launch External Tool Provider (LTI)
3: #
1.12 ! raeburn 4: # $Id: lonexttool.pm,v 1.11 2017/12/18 16:11:18 raeburn Exp $
1.1 raeburn 5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28:
29: =pod
30:
31: =head1 NAME
32:
33: Apache::lonexttool - Tool Provider launcher
34:
35: =head1 SYNOPSIS
36:
37:
38: =head1 OVERVIEW
39:
40: =cut
41:
42: package Apache::lonexttool;
43:
44: use strict;
45: use Apache::Constants qw(:common :http);
46: use Encode;
47: use Digest::SHA;
48: use HTML::Entities;
49: use Apache::lonlocal;
50: use Apache::lonnet;
51: use Apache::loncommon;
1.12 ! raeburn 52: use Apache::londatecheck;
! 53: use Apache::lonipcheck;
! 54: use Apache::lonhomework;
! 55: use Apache::structuretags;
1.9 raeburn 56: use LONCAPA::ltiutils;
1.1 raeburn 57:
58: sub handler {
59: my $r=shift;
60: &Apache::loncommon::content_type($r,'text/html');
61: $r->send_http_header;
62:
63: return OK if $r->header_only;
64:
65: my $target=$env{'form.grade_target'};
66: # ------------------------------------------------------------ Print the screen
67: if ($target eq 'tex') {
68: $r->print(&Apache::lonprintout::print_latex_header($env{'form.latex_type'}));
1.12 ! raeburn 69: } else {
! 70: $target = 'web';
1.1 raeburn 71: }
72:
73: # Is this even in a course?
74: unless ($env{'request.course.id'}) {
75: if ($target ne 'tex') {
1.11 raeburn 76: &Apache::loncommon::simple_error_page($r,'','Not in a course',
77: {'only_body' => 1});
1.1 raeburn 78: } else {
79: $r->print('\textbf{Not in a course}\end{document}');
80: }
81: return OK;
82: }
83:
1.3 raeburn 84: my ($marker,$exttool) = (split(m{/},$r->uri))[4,5];
1.1 raeburn 85: $marker=~s/\D//g;
86:
87: if (!$marker) {
88: if ($target ne 'tex') {
1.3 raeburn 89: $r->print(&mt('Invalid Call'));
1.1 raeburn 90: } else {
1.3 raeburn 91: $r->print('\textbf{'&mt('Invalid Call').'}\end{document}');
1.1 raeburn 92: }
93: return OK;
94: }
95:
96: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
97: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
98: my $chome = $env{'course.'.$env{'request.course.id'}.'.home'};
1.12 ! raeburn 99: my ($idx,$is_tool,%toolhash,%toolsettings);
1.1 raeburn 100:
1.3 raeburn 101: if ($r->uri eq "/adm/$cdom/$cnum/$marker/$exttool") {
1.12 ! raeburn 102: %toolsettings=&Apache::lonnet::dump('exttool_'.$marker,$cdom,$cnum);
1.3 raeburn 103: if ($toolsettings{'id'}) {
1.12 ! raeburn 104: $idx = $toolsettings{'id'};
1.7 raeburn 105: my %ltitools = &Apache::lonnet::get_domain_lti($cdom,'consumer');
1.6 raeburn 106: if (ref($ltitools{$idx}) eq 'HASH') {
1.12 ! raeburn 107: %toolhash = %{$ltitools{$idx}};
1.3 raeburn 108: $toolhash{'display'} = {
109: target => $toolsettings{'target'},
110: width => $toolsettings{'width'},
111: height => $toolsettings{'height'},
112: };
1.4 raeburn 113: $toolhash{'crslabel'} = $toolsettings{'crslabel'};
114: $toolhash{'crstitle'} = $toolsettings{'crstitle'};
1.5 raeburn 115: $toolhash{'crsappend'} = $toolsettings{'crsappend'};
1.12 ! raeburn 116: $toolhash{'gradable'} = $toolsettings{'gradable'};
1.3 raeburn 117: $is_tool = 1;
1.1 raeburn 118: }
119: }
1.3 raeburn 120: }
121: unless ($is_tool) {
1.1 raeburn 122: if ($target ne 'tex') {
1.3 raeburn 123: $r->print('<div>'.&mt('Invalid Call').'</div>');
1.1 raeburn 124: } else {
1.3 raeburn 125: $r->print('\textbf{'.&mt(Invalid Call).'}\end{document}');
1.1 raeburn 126: }
1.12 ! raeburn 127: return OK;
! 128: }
! 129:
! 130: my ($status,$open,$close,$msg);
! 131: if ($toolhash{'gradable'}) {
! 132: $Apache::lonhomework::browse = &Apache::lonnet::allowed('bre',$r->uri);
! 133: if ($env{'form.markaccess'}) {
! 134: my @interval=&Apache::lonnet::EXT("resource.0.interval");
! 135: my ($timelimit) = split(/_/,$interval[0]);
! 136: &Apache::lonnet::set_first_access($interval[1],$timelimit);
! 137: }
! 138: ($status,$msg) = &gradabletool_access_check();
! 139: undef($Apache::lonhomework::browse);
! 140: if ($status eq 'SHOW_ANSWER') {
! 141: $r->print(&display_score());
! 142: return OK;
! 143: } elsif ($status ne 'CAN_ANSWER') {
! 144: $r->print($msg);
! 145: return OK;
! 146: }
! 147: } else {
! 148: my ($status,$open,$close,$msg)=&Apache::londatecheck::content_date_check();
! 149: if ($status ne 'OPEN') {
! 150: if ($target eq 'tex') {
! 151: $r->print(&mt('Not open to be viewed'));
! 152: } else {
! 153: $r->print($msg);
! 154: }
! 155: return OK;
! 156: } else {
! 157: ($status,$msg)=&Apache::lonipcheck::ip_access_check();
! 158: if ($status ne 'OPEN') {
! 159: if ($target eq 'tex') {
! 160: $r->print(&mt('Not open to be viewed'));
! 161: } else {
! 162: $r->print($msg);
! 163: }
! 164: return OK;
! 165: }
! 166: }
! 167: }
! 168: my $launchok = 1;
! 169: if ($target eq 'tex') {
! 170: $r->print(&mt('External Tool'));
! 171: } else {
! 172: my $now = time;
! 173: if ($toolhash{'passback'}) {
! 174: if (&LONCAPA::ltiutils::set_service_secret($cdom,$cnum,$marker,'grade',$now,
! 175: \%toolsettings,\%toolhash) eq 'ok') {
! 176: $toolhash{'gradesecret'} = $toolsettings{'gradesecret'};
! 177: } else {
! 178: undef($launchok);
! 179: }
! 180: }
! 181: if ($toolhash{'roster'}) {
! 182: if (&LONCAPA::ltiutils::set_service_secret($cdom,$cnum,$marker,'roster',$now,
! 183: \%toolsettings,\%toolhash) eq 'ok') {
! 184: $toolhash{'rostersecret'} = $toolsettings{'rostersecret'};
! 185: }
! 186: }
! 187: my $submittext = &mt('Launch [_1]',$toolhash{'title'});
! 188: if (($toolhash{'key'} ne '') && ($toolhash{'secret'} ne '') &&
! 189: ($toolhash{'url'} ne '') && ($launchok)) {
! 190: my %lti = <i_params($r,$cnum,$cdom,$idx,$submittext,\%toolhash);
! 191: my $url = $toolhash{'url'};
! 192: if ($toolhash{'crsappend'} ne '') {
! 193: $url .= $toolhash{'crsappend'};
! 194: }
! 195: $r->print(&launch_html($url,$toolhash{'key'},$toolhash{'secret'},
! 196: $submittext,\%lti));
! 197: } else {
! 198: $r->print('<div>'.&mt('External Tool Unavailable').'</div>');
! 199: }
1.1 raeburn 200: }
201: return OK;
202: }
203:
204: sub lti_params {
1.6 raeburn 205: my ($r,$cnum,$cdom,$idx,$submittext,$toolsref) = @_;
1.1 raeburn 206: my ($version,$context_type,$msgtype,$toolname,$passback,$roster,$locale,
1.6 raeburn 207: $crslabel,$crstitle,$gradesecret,$rostersecret,%fields,%rolesmap,
208: %display,%custom,@userlangs);
1.1 raeburn 209: if (ref($toolsref) eq 'HASH') {
210: $version = $toolsref->{'version'};
211: $toolname = $toolsref->{'title'};
212: $passback = $toolsref->{'passback'};
1.6 raeburn 213: $gradesecret = $toolsref->{'gradesecret'};
1.1 raeburn 214: $roster = $toolsref->{'roster'};
1.6 raeburn 215: $rostersecret = $toolsref->{'rostersecret'};
1.1 raeburn 216: $msgtype = $toolsref->{'messagetype'};
217: if (ref($toolsref->{'fields'}) eq 'HASH') {
218: %fields = %{$toolsref->{'fields'}};
219: }
220: if (ref($toolsref->{'roles'}) eq 'HASH') {
221: %rolesmap = %{$toolsref->{'roles'}};
222: }
223: if (ref($toolsref->{'display'}) eq 'HASH') {
224: %display = %{$toolsref->{'display'}};
225: }
226: if (ref($toolsref->{'custom'}) eq 'HASH') {
227: %custom = %{$toolsref->{'custom'}};
228: }
1.4 raeburn 229: $crslabel = $toolsref->{'crslabel'};
230: $crstitle = $toolsref->{'crstitle'};
1.1 raeburn 231: }
232: if ($version eq '') {
233: $version = 'LTI-1p0';
234: }
235: if ($context_type eq '') {
236: $context_type = 'CourseSection';
237: }
238: if ($msgtype eq '') {
239: $msgtype = 'basic-lti-launch-request';
240: }
1.4 raeburn 241: if ($crslabel eq '') {
242: $crslabel = $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'},
243: }
244: if ($crstitle eq '') {
245: $crstitle = $env{'course.'.$env{'request.course.id'}.'.description'},;
246: }
1.1 raeburn 247: my $lonhost = $r->dir_config('lonHostID');
248: my $loncaparev = $r->dir_config('lonVersion');
249: my $uname = $env{'user.name'};
250: my $udom = $env{'user.domain'};
251: my @possroles = qw(Instructor ContentDeveloper TeachingAssistant Learner);
1.3 raeburn 252: my ($roleprefix) = ($env{'request.role'} =~ /^(\w+)\./);
253: my $ltirole = $rolesmap{$roleprefix};
1.1 raeburn 254: unless (grep(/^\Q$ltirole\E$/,@possroles)) {
255: $ltirole = 'Learner';
256: }
257: my $digest_user = &Encode::decode_utf8($uname.':'.$udom);
258: $digest_user = &Digest::SHA::sha1_hex($digest_user);
259: if ($env{'course.'.$env{'request.course.id'}.'.languages'} ne '') {
260: @userlangs=(@userlangs,split(/\s*(\,|\;|\:)\s*/,
261: $env{'course.'.$env{'request.course.id'}.'.languages'}));
262: } else {
1.2 raeburn 263: my %langhash = &Apache::loncommon::getlangs($uname,$udom);
1.1 raeburn 264: if ($langhash{'languages'} ne '') {
265: @userlangs = split(/\s*(\,|\;|\:)\s*/,$langhash{'languages'});
266: } else {
267: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
268: if ($domdefs{'lang_def'} ne '') {
269: @userlangs = ($domdefs{'lang_def'});
270: }
271: }
272: }
273: if (scalar(@userlangs) == 1) {
274: $locale = $userlangs[0];
275: }
276: my ($title,$digest_symb);
277: my ($symb) = &Apache::lonnet::whichuser();
278: if ($symb) {
279: $digest_symb = &Encode::decode_utf8($symb);
280: $digest_symb = &Digest::SHA::sha1_hex($digest_symb);
281: my $navmap = Apache::lonnavmaps::navmap->new();
282: if (ref($navmap)) {
283: my $res = $navmap->getBySymb($symb);
284: if (ref($res)) {
285: $title = $res->compTitle();
286: }
287: }
288: }
1.4 raeburn 289: my $domdesc = &Apache::lonnet::domain($cdom);
290: my $primary_id = &Apache::lonnet::domain($cdom,'primary');
291: my $int_dom = &Apache::lonnet::internet_dom($primary_id);
292: my $portal_url = &Apache::lonnet::course_portal_url($cnum,$cdom);
293:
1.1 raeburn 294: my %ltiparams = (
295: lti_version => $version,
296: lti_message_type => $msgtype,
297: resource_link_title => $title,
298: resource_link_id => $digest_symb,
299: tool_consumer_instance_guid => $lonhost,
1.4 raeburn 300: tool_consumer_instance_description => $domdesc,
1.1 raeburn 301: tool_consumer_info_product_family_code => 'loncapa',
1.4 raeburn 302: tool_consumer_instance_name => $int_dom,
303: tool_consumer_instance_url => $portal_url,
1.1 raeburn 304: tool_consumer_info_version => $loncaparev,
305: user_id => $digest_user,
306: roles => $ltirole,
307: context_id => $env{'request.course.id'},
308: context_type => $context_type,
1.4 raeburn 309: context_label => $crslabel,
310: context_title => $crstitle,
1.1 raeburn 311: launch_presentation_locale => $locale,
312: );
1.3 raeburn 313: my $crshome = $env{'course.'.$env{'request.course.id'}.'.home'};
314: my $crshostname = &Apache::lonnet::hostname($crshome);
1.1 raeburn 315: if ($crshostname) {
1.3 raeburn 316: my $crsprotocol = $Apache::lonnet::protocol{$crshome};
1.1 raeburn 317: unless ($crsprotocol eq 'https') {
318: $crsprotocol = 'http';
1.6 raeburn 319: }
320: if (($passback) || ($roster)) {
321: if ($passback) {
1.8 raeburn 322: $ltiparams{'lis_outcome_service_url'} = $crsprotocol.'://'.$crshostname.'/adm/service/passback';
1.1 raeburn 323: $ltiparams{'ext_ims_lis_basic_outcome_url'} = $ltiparams{'lis_outcome_service_url'};
1.6 raeburn 324: if ($gradesecret) {
1.9 raeburn 325: my $uniqid = $digest_symb.':::'.$digest_user.':::'.$env{'request.course.id'};
1.10 raeburn 326: $ltiparams{'lis_result_sourcedid'} = &LONCAPA::ltiutils::get_service_id($gradesecret,$uniqid);
1.6 raeburn 327: }
328: }
329: if ($roster) {
330: if (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) {
1.8 raeburn 331: $ltiparams{'ext_ims_lis_memberships_url'} = $crsprotocol.'://'.$crshostname.'/adm/service/roster';
1.6 raeburn 332: if ($rostersecret) {
1.9 raeburn 333: my $uniqid = $digest_symb.':::'.$env{'request.course.id'};
1.10 raeburn 334: $ltiparams{'ext_ims_lis_memberships_id'} = &LONCAPA::ltiutils::get_service_id($rostersecret,$uniqid);
1.6 raeburn 335: }
336: }
337: }
338: my %digesthash;
339: if ($ltiparams{'lis_result_sourcedid'}) {
340: $digesthash{$ltiparams{'lis_result_sourcedid'}} = "$idx\0".time;
341: }
342: if ($ltiparams{'ext_ims_lis_memberships_id'}) {
343: $digesthash{$ltiparams{'ext_ims_lis_memberships_id'}} = "$idx\0".time;
1.1 raeburn 344: }
1.6 raeburn 345: if (($digest_symb) && ($gradesecret || $rostersecret)) {
346: $digesthash{$digest_symb} = $symb;
347: }
348: if (($passback) && ($gradesecret)) {
349: $digesthash{$digest_user} = $uname.':'.$udom;
350: }
351: if (keys(%digesthash)) {
352: &Apache::lonnet::put('exttools',\%digesthash,$cdom,$cnum);
1.1 raeburn 353: }
354: }
355: }
356: if ($display{'target'}) {
357: $ltiparams{'launch_presentation_document_target'} = $display{'target'};
358: }
359: if ($display{'width'}) {
360: $ltiparams{'launch_presentation_width'} = $display{'width'};
361: }
362: if ($display{'height'}) {
363: $ltiparams{'launch_presentation_height'} = $display{'height'};
364: }
365: if ($fields{'firstname'}) {
366: $ltiparams{'lis_person_name_given'} = $env{'environment.firstname'};
367: }
368: if ($fields{'lastname'}) {
369: $ltiparams{'lis_person_name_family'} = $env{'environment.lastname'};
370: }
371: if ($fields{'fullname'}) {
372: $ltiparams{'lis_person_name_full'} = &Apache::loncommon::plainname($uname,$udom);
373: }
374: if ($fields{'email'}) {
375: my %emails = &Apache::loncommon::getemails($uname,$udom);
376: my $contact_email;
1.3 raeburn 377: foreach my $type ('permanentemail','critnotification','notification') {
378: if ($emails{$type} =~ /\@/) {
379: $contact_email = $emails{$type};
1.1 raeburn 380: last;
381: }
382: }
1.2 raeburn 383: $ltiparams{'lis_person_contact_email_primary'} = $contact_email;
1.1 raeburn 384: }
1.4 raeburn 385: if ($fields{'user'}) {
1.6 raeburn 386: $ltiparams{'lis_person_sourcedid'} = $uname.':'.$udom;
1.4 raeburn 387: }
1.1 raeburn 388: if (keys(%custom)) {
389: foreach my $key (keys(%custom)) {
1.5 raeburn 390: my $value = $custom{$key};
391: $value =~ s/^\s+|\s+\$//g;
392: if ($value =~ /^\QLONCAPA::env{\E([^\}]+)\}$/) {
393: if (exists($env{$1})) {
394: $value = $env{$1};
395: }
396: }
397: $ltiparams{'custom_'.$key} = $value;
1.1 raeburn 398: }
399: }
400: foreach my $key (keys(%ltiparams)) {
401: $ltiparams{$key} = &Encode::decode_utf8($ltiparams{$key});
402: }
1.3 raeburn 403: $ltiparams{'basiclti_submit'} = $submittext;
1.1 raeburn 404: return %ltiparams;
405: }
406:
407: sub launch_html {
1.3 raeburn 408: my ($url,$key,$secret,$submittext,$paramsref) = @_;
1.9 raeburn 409: my $hashref = &LONCAPA::ltiutils::sign_params($url,$key,$secret,$paramsref);
1.5 raeburn 410: my $action = &HTML::Entities::encode($url,'<>&"');
1.1 raeburn 411: my $form = <<"END";
412: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
413: <html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
414: <body>
415: <div id="LCltiLaunch">
1.5 raeburn 416: <form name="LCltiLaunchForm" id="LCltiLaunchFormId" action="$action" method="post" encType="application/x-www-form-urlencoded">
1.1 raeburn 417: END
418: if (ref($hashref) eq 'HASH') {
419: foreach my $item (keys(%{$hashref})) {
1.3 raeburn 420: my $type = 'hidden';
421: if ($item eq 'basiclti_submit') {
422: $type = 'submit';
423: }
424: $form .= '<input type="'.$type.'" name="'.$item.'" value="'.$hashref->{$item}.'" id="id_'.$item.'" />'."\n";
1.1 raeburn 425: }
426: }
427: $form .= "</form></div>\n";
428: $form .= <<"ENDJS";
429: <script type="text/javascript">
430: document.getElementById("LCltiLaunch").style.display = "none";
431: nei = document.createElement('input');
432: nei.setAttribute('type','hidden');
1.3 raeburn 433: nei.setAttribute('name','basiclti_submit');
1.1 raeburn 434: nei.setAttribute('value','$submittext');
1.3 raeburn 435: document.getElementById("LCltiLaunchFormId").appendChild(nei);
1.1 raeburn 436: document.LCltiLaunchForm.submit();
437: </script>
438: ENDJS
439: $form .= "</body></html>\n";
440: return $form;
441: }
442:
1.12 ! raeburn 443: sub gradabletool_access_check {
! 444: my ($result,$resource_due);
! 445: my $status;
! 446: my ($symb,$courseid,$udom,$uname) = &Apache::lonnet::whichuser();
! 447: my @targets;
! 448: if (defined($env{'form.submitted'}) && defined($env{'form.validate'})) {
! 449: @targets = ('grade','web');
! 450: } else {
! 451: @targets = ('web');
! 452: }
! 453: foreach my $target (@targets) {
! 454: undef(%Apache::lonhomework::results);
! 455: undef(%Apache::lonhomework::history);
! 456: %Apache::lonhomework::history =
! 457: &Apache::lonnet::restore($symb,$courseid,$udom,$uname);
! 458: &Apache::lonhomework::set_show_problem_status(&Apache::lonnet::EXT('resource.0.problemstatus'));
! 459: my ($accessmsg,$slot_name,$slot,$ipused);
! 460: ($status,$accessmsg,$slot_name,$slot,$ipused) =
! 461: &Apache::lonhomework::check_slot_access('0','tool',$symb);
! 462: if (( $status eq 'CLOSED' ) ||
! 463: ( $status eq 'UNCHECKEDOUT') ||
! 464: ( $status eq 'NOT_YET_VIEWED') ||
! 465: ( $status eq 'BANNED') ||
! 466: ( $status eq 'UNAVAILABLE') ||
! 467: ( $status eq 'NOT_IN_A_SLOT') ||
! 468: ( $status eq 'NOTRESERVABLE') ||
! 469: ( $status eq 'RESERVABLE') ||
! 470: ( $status eq 'RESERVABLE_LATER') ||
! 471: ( $status eq 'INVALID_ACCESS') ||
! 472: ( $status eq 'NEED_DIFFERENT_IP') ||
! 473: ( $status eq 'WAITING_FOR_GRADE')) {
! 474: $result = &Apache::structuretags::access_status_msg('tool',$status,$symb,
! 475: $target,$ipused,$accessmsg);
! 476: } elsif ($status eq 'NEEDS_CHECKIN') {
! 477: $result = &Apache::structuretags::checkin_prompt($target,$slot_name,$slot,'tool');
! 478: } elsif ($target eq 'web') {
! 479: if ($status eq 'CAN_ANSWER') {
! 480: $resource_due = &Apache::lonhomework::due_date(0, $env{'request.symb'});
! 481: if ($slot_name ne '') {
! 482: $resource_due = &Apache::structuretags::selfcheckin_resource($resource_due,
! 483: $slot_name,$slot,
! 484: $env{'request.symb'});
! 485: }
! 486: }
! 487: }
! 488: }
! 489: return ($status,$result,$resource_due);
! 490: }
! 491:
! 492: sub display_score {
! 493: my $weight = &Apache::lonnet::EXT('resource.0.weight');
! 494: if ((!defined($weight)) || ($weight eq '')) { $weight=1; }
! 495: my $awarded = $Apache::lonhomework::history{'resource.0.awarded'};
! 496: if (!defined($awarded)) { $awarded=0; }
! 497: my $display='';
! 498: if (!defined($awarded)) {
! 499: $display = &mt('[_1] possible points.',$weight);
! 500: } else {
! 501: my $points = $awarded*$weight;
! 502: my $result = sprintf('%.2f',$points);
! 503: $display = &mt('You have [_1] out of [quant,_2,possible point]',
! 504: $result,$weight);
! 505: }
! 506: my $comment = $Apache::lonhomework::history{'resource.0.comment'};
! 507: if (!defined($comment) || $comment!~/\w/) {
! 508: $comment='';
! 509: } else {
! 510: $comment='<br /><table><tr><td bgcolor="#FFFFDD">'.$comment.'</td></tr></table>';
! 511: }
! 512: my $gradeinfo = $Apache::lonhomework::history{'resource.0.gradeinfo'};
! 513: if (!defined($gradeinfo) || $gradeinfo!~/\w/) {
! 514: $gradeinfo='';
! 515: } else {
! 516: $gradeinfo='<br /><table><tr><td bgcolor="#DDDDFF"><font size="+2">'.$gradeinfo.'</font></td></tr></table>';
! 517: }
! 518: return $display.$comment.$gradeinfo;
! 519: }
! 520:
1.1 raeburn 521: 1;
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