File:
[LON-CAPA] /
loncom /
interface /
selfenroll.pm
Revision
1.9:
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Fri Jul 11 13:43:53 2008 UTC (15 years, 10 months ago) by
raeburn
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MAIN
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- Add some header lines.
- Re-wording to replace domain with institution in most cases.
- Code to check in cases where self-enrollment is restricted to certain types of user whether user has the correct institutional status moved to &user_can_selfenroll().
- Information about self-enrollment with future availability.
- Checking eligibility for authenticated users for self-enrollment with future availability.
- Improved display of institutional status types allowed to self-enroll.
- Corrected or eliminated the domain passed as arg to &get_selfenroll_filters() and &print_selfenroll_types in some cases.
1: # The LearningOnline Network
2: # Allow users to self-enroll in a course
3: #
4: # $Id: selfenroll.pm,v 1.9 2008/07/11 13:43:53 raeburn Exp $
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: package Apache::selfenroll;
30:
31: use strict;
32: use Apache::Constants qw(:common);
33: use Apache::lonnet;
34: use Apache::loncommon;
35: use Apache::lonlocal;
36: use LONCAPA qw(:DEFAULT :match);
37:
38: sub handler {
39: my $r = shift;
40: &Apache::loncommon::content_type($r,'text/html');
41: $r->send_http_header;
42: if ($r->header_only) {
43: return OK;
44: }
45: my $handle = &Apache::lonnet::check_for_valid_session($r);
46: my $lonidsdir=$r->dir_config('lonIDsDir');
47: if ($handle ne '') {
48: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
49: }
50: &Apache::lonacc::get_posted_cgi($r);
51: &Apache::lonlocal::get_language_handle($r);
52: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['cid']);
53: my ($coursechk,$cid) = &validate_course_id($env{'form.cid'});
54: my $start_page =
55: &Apache::loncommon::start_page('Self-enroll in a LON-CAPA course','',
56: {'no_inline_link' => 1,});
57: $r->print($start_page);
58: &Apache::lonhtmlcommon::clear_breadcrumbs();
59: &Apache::lonhtmlcommon::add_breadcrumb
60: ({href=>"/adm/selfenroll?cid=$cid",
61: text=>"Self-enroll"});
62: $r->print(&Apache::lonhtmlcommon::breadcrumbs('Self-enroll in course'));
63: if ($coursechk ne 'ok') {
64: $r->print('<h3>'.&mt('Self-enrollment error').'</h3>'.
65: '<span class="LC_error">'.&mt('Invalid domain or course number').'</span>');
66: $r->print(&Apache::loncommon::end_page());
67: return OK;
68: }
69: my ($cdom,$cnum,$canenroll,$selfenroll_types,$selfenroll_registered,
70: @cancreate,$knownuser,$selfenroll_access_start,$selfenroll_access_end,
71: $selfenroll_section,$selfenroll_future,%curr_role,%coursehash,$cdomdesc);
72: my $now = time;
73: %coursehash = &Apache::lonnet::coursedescription($cid);
74: $cdom = $coursehash{'domain'};
75: $cnum = $coursehash{'num'};
76: $selfenroll_types = $coursehash{'internal.selfenroll_types'};
77: $selfenroll_registered = $coursehash{'internal.selfenroll_registered'};
78: $selfenroll_section = $coursehash{'internal.selfenroll_section'};
79: $selfenroll_access_start = $coursehash{'internal.selfenroll_start_access'};
80: $selfenroll_access_end = $coursehash{'internal.selfenroll_end_access'};
81: if ($selfenroll_types ne '') {
82: my $start = $coursehash{'internal.selfenroll_start_date'};
83: my $end = $coursehash{'internal.selfenroll_end_date'};
84: if (($start > 0 && $start < $now) && (($end == 0) || ($end > 0 && $end > $now))) {
85: $canenroll = 1;
86: } elsif (($end == 0) || ($end > 0 && $end > $now)) {
87: if ($start > $now) {
88: $selfenroll_future = &Apache::lonlocal::locallocaltime($start);
89: }
90: }
91: }
92: $knownuser = &user_is_known();
93: if (!$canenroll) {
94: $r->print('<h3>'.&mt('Self-enrollment unavailable').'</h3><span class="LC_warning">'.
95: &mt('Self-enrollment is not currently available for this course.').
96: '</span><br /><br />');
97: if ($selfenroll_types ne '') {
98: if ($selfenroll_future ne '') {
99: if ($selfenroll_types eq '*') {
100: $r->print(&mt('Self-enrollment will become available starting [_1], and will be available to all LON-CAPA users.',$selfenroll_future).'<br />');
101: } else {
102: my ($enrolltypes,$longtypes,$alldoms);
103: if ($knownuser) {
104: &get_selfenroll_filters($selfenroll_types,$env{'user.domain'});
105: my $domdesc = &Apache::lonnet::domain($env{'user.domain'},'description');
106: if (ref($enrolltypes) eq 'HASH') {
107: if (ref($enrolltypes->{$env{'user.domain'}}) eq 'ARRAY') {
108: if (grep(/^any$/,@{$enrolltypes->{$env{'user.domain'}}})) {
109: $r->print(&mt('Self-enrollment will become available starting [_1], and will be available to all LON-CAPA users at your institution ([_2]).',
110: $selfenroll_future,$domdesc).'<br />');
111:
112: } else {
113: if (&user_can_selfenroll($env{'user.domain'},
114: $env{'user.name'},
115: $enrolltypes->{$env{'user.domain'}})) {
116: $r->print(&mt('Self-enrollment will become available starting [_1]; please enroll at that time.',$selfenroll_future));
117: } else {
118: $r->print(&mt('Although self-enrollment will become available starting [_1], you are ineligible for enrollment.',$selfenroll_future).'<br />');
119: $r->print(&print_selfenroll_types($longtypes,$env{'user.domain'}));
120: }
121: }
122: }
123: }
124: } else {
125: $r->print(&mt('Self-enrollment will become available starting [_1].',
126: $selfenroll_future).'<br />');
127: $r->print(&print_selfenroll_types($longtypes));
128: }
129: }
130: }
131: }
132: }
133: if ($knownuser) {
134: foreach my $key (keys(%env)) {
135: if ($key =~ m-^user\.role\.st\./$cdom/$cnum/?(\w*)$-) {
136: my $sec = $1;
137: my ($start,$end) = split(/\./,$env{$key});
138: my $status = 'active';
139: if (($end) && ($end<=$now)) {
140: $status = 'previous';
141: }
142: if (($start) && ($now<$start)) {
143: $status = 'future';
144: }
145: if ($status eq 'active' || $status eq 'future') {
146: $curr_role{'status'} = $status;
147: $curr_role{'section'} = $sec;
148: if ($curr_role{'section'} eq '') {
149: $curr_role{'section'} = &mt('none');
150: }
151: $curr_role{'start'} = &Apache::lonlocal::locallocaltime($start);
152: $curr_role{'role'} = 'st./'.$cdom.'/'.$cnum;
153: if ($sec ne '') {
154: $curr_role{'role'} .= '/'.$sec;
155: }
156: }
157: }
158: }
159: }
160: if (!$canenroll) {
161: if (keys(%curr_role)) {
162: $r->print(&has_role(%curr_role));
163: }
164: $r->print(&Apache::loncommon::end_page());
165: return OK;
166: }
167: @cancreate = &can_create($cdom);
168: my ($login_path,$firsturl,$create_path,$sso_url,$missing_formitem);
169: $login_path = '/adm/login';
170: $firsturl= '/adm/selfenroll?cid='.$cid;
171: $create_path = '/adm/createaccount';
172: $sso_url = $r->dir_config('lonSSOReloginServer');
173: if ($sso_url eq '') {
174: $sso_url = $login_path;
175: }
176: my $missing_formitem = &mt('The link to the requested page could not be followed.')."\\n".&mt('The placeholder for the courseID is absent.');
177: if ($knownuser) {
178: if (keys(%curr_role)) {
179: $r->print('<h3>'.&mt('Self-enrollment unavailable').'</h3>'.
180: '<span class="LC_warning">'.&has_role(%curr_role).'</span>');
181: $r->print(&Apache::loncommon::end_page());
182: return OK;
183: }
184: &process_self_enroll($r,$cdom,$cnum,$selfenroll_types,$selfenroll_registered,
185: $selfenroll_access_start,$selfenroll_access_end,
186: $selfenroll_section,$now);
187: } elsif (@cancreate > 0) {
188: $r->print(<<END);
189: <script type="text/javascript">
190: function setPath(formaction,item,arg) {
191: document.forms.logmein.action = formaction;
192: var itemid = getIndexByName("setting");
193: if (itemid > -1) {
194: document.logmein.elements[itemid].name = item;
195: document.logmein.elements[itemid].value = arg;
196: document.logmein.submit();
197: } else {
198: alert("$missing_formitem");
199: }
200: return;
201: }
202:
203: function getIndexByName(item) {
204: for (var i=0;i<document.logmein.elements.length;i++) {
205: if (document.logmein.elements[i].name == item) {
206: return i;
207: }
208: }
209: return -1;
210: }
211: </script>
212: END
213: $r->print('<h3>'.&mt('LON-CAPA account required').'</h3>'.
214: &mt('You need to be logged into LON-CAPA to self-enroll in a course.').'<ul><li>'.&mt('If you have an account in LON-CAPA, [_1]log-in[_2].','<a href="javascript:setPath('."'$login_path','firsturl','$firsturl'".')">','</a>').'</li>');
215: if (@cancreate > 1) {
216: $r->print('<li>'.&mt('Otherwise:').'<br />');
217: my $count = 0;
218: foreach my $type ('sso','login','email') {
219: if (($count > 0) && ($count <@cancreate)) {
220: $r->print(' , '.&mt('or').'<br />');
221: }
222: if (grep(/^$type$/,@cancreate)) {
223: if ($type eq 'sso') {
224: $r->print(' '.&mt("if you have an institutional log-in, use your institution's [_1]single sign on page[_2] to log-in, then create an account",'<a href="javascript:setPath('."'$sso_url','firsturl','$firsturl'".')">','</a>'));
225: } elsif ($type eq 'login') {
226: $r->print(' '.&mt('if you have an institutional login, [_1]create an account[_2]','<a href="javascript:setPath('."'$create_path','courseid','$cid'".')">','</a>'));
227: } elsif ($type eq 'email') {
228: $r->print(' '.&mt('you can use an e-mail address to [_1]create an account[_2]','<a href="javascript:setPath('."'$create_path','courseid','$cid'".')">','</a>'));
229: }
230: $count ++;
231: }
232: }
233: $r->print('.<br />');
234: } else {
235: if ($cancreate[0] eq 'login') {
236: $r->print('<li>'.&mt('Otherwise, if you have an institutional login, [_1]create an account[_2].','<a href="javascript:setPath('."'$create_path','courseid','$cid'".')">','</a>'));
237: } elsif ($cancreate[0] eq 'email') {
238: $r->print('<li>'.&mt('Otherwise, you will use an e-mail address to [_1]create an account[_2].','<a href="javascript:setPath('."'$create_path','courseid','$cid'".')">','</a>'));
239: } elsif ($cancreate[0] eq 'sso') {
240: $r->print('<li>'.&mt("Otherwise, use your institution's [_1]single sign on page[_2] to log-in, then create an account.",'<a href="javascript:setPath('."'$sso_url','firsturl','$firsturl'".')">','</a>'));
241: }
242: }
243: if ($selfenroll_types eq '*') {
244: $r->print('<br />'.&mt('You will be able to self enroll in this course once the account has been created.').'</li></ul>');
245: } else {
246: $r->print('</li></ul>');
247: my ($enrolltypes,$longtypes,$alldoms) =
248: &get_selfenroll_filters($selfenroll_types);
249: $r->print(&print_selfenroll_types($longtypes));
250: }
251: } else {
252: my $cdomdesc = &Apache::lonnet::domain($cdom,'description');
253: $r->print('<h3>'.&mt('LON-CAPA account required').'</h3>');
254: $r->print(&mt('You must [_1]log-in[_2] to LON-CAPA with an existing account to be able to enroll in this course, as account creation at this institution ([_3]) is not permitted when self-enrolling.','<a href="'.$login_path.'">','</a>',$cdomdesc));
255: if ($selfenroll_types ne '*') {
256: my ($enrolltypes,$longtypes,$alldoms) =
257: &get_selfenroll_filters($selfenroll_types);
258: $r->print('<br />'.&print_selfenroll_types($longtypes));
259: }
260: my $displayurl = &escape($firsturl);
261: $r->print(&mt('Submit a request to the LON-CAPA [_1]helpdesk[_2] for [_3] if you require assistance.','<a href="/adm/helpdesk?origurl='.$displayurl.'">','</a>',$cdomdesc));
262: }
263: $r->print('<form name ="logmein" method="post" action="">'."\n".
264: '<input type="hidden" name="setting" value=""/>'."\n".
265: '</form>'."\n".
266: &Apache::loncommon::end_page());
267: return OK;
268: }
269:
270: sub validate_course_id {
271: my ($cid) = @_;
272: my ($cdom,$cnum) = ($env{'form.cid'} =~ /^($match_domain)_($match_courseid)$/);
273: if ($cdom ne '' && $cnum ne '') {
274: if (&Apache::lonnet::is_course($cdom,$cnum)) {
275: return ('ok',$cid);
276: }
277: }
278: return;
279: }
280:
281: sub user_is_known {
282: my $known = 0;
283: if ($env{'user.name'} ne '' && $env{'user.name'} ne 'public'
284: && $env{'user.domain'} ne '' && $env{'user.domain'} ne 'public') {
285: $known = 1;
286: }
287: return $known;
288: }
289:
290: sub can_create {
291: my ($cdom) = @_;
292: my @cancreate;
293: my %domconfig = &Apache::lonnet::get_dom('configuration',['usercreation'],$cdom);
294: if (ref($domconfig{'usercreation'}) eq 'HASH') {
295: if (ref($domconfig{'usercreation'}{'cancreate'}) eq 'HASH') {
296: if ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne 'none') {
297: if (ref($domconfig{'usercreation'}{'cancreate'}{'selfcreate'}) eq 'ARRAY') {
298: @cancreate = @{$domconfig{'usercreation'}{'cancreate'}{'selfcreate'}};
299: } else {
300: if (($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne 'none') &&
301: ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne '')) {
302: @cancreate = ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'});
303: }
304: }
305: }
306: }
307: }
308: return @cancreate;
309: }
310:
311: sub has_role {
312: my (%curr_role) = @_;
313: my $output;
314: if ($curr_role{'status'} eq 'active') {
315: my $rolelink = &jump_to_role($curr_role{'role'});
316: $output = &mt('You already have an active student role (section: "[_1]") in this course.',$curr_role{'section'}).'<br>'.$rolelink;
317: } elsif ($curr_role{'status'} eq 'future') {
318: $output = &mt('You have a student role (section: "[_1]") in this course which will become active [_2].',$curr_role{'section'},$curr_role{'start'});
319: }
320: return $output;
321: }
322:
323: sub process_self_enroll {
324: my ($r,$cdom,$cnum,$selfenroll_types,$selfenroll_registered,
325: $selfenroll_access_start,$selfenroll_access_end,$selfenroll_section,$now) = @_;
326: my $udom = $env{'user.domain'};
327: my $uname = $env{'user.name'};
328: my $selfenroll = 0;
329: my ($enrolltypes,$longtypes,$alldoms);
330: if ($selfenroll_types eq '*') {
331: $selfenroll = 1;
332: } else {
333: ($enrolltypes,$longtypes,$alldoms) =
334: &get_selfenroll_filters($selfenroll_types,$udom);
335: if ($alldoms) {
336: $selfenroll = 1;
337: } elsif (ref($enrolltypes) eq 'HASH') {
338: if (ref($enrolltypes->{$udom}) eq 'ARRAY') {
339: if (grep(/^any$/,@{$enrolltypes->{$udom}})) {
340: $selfenroll = 1;
341: } else {
342: $selfenroll = &user_can_selfenroll($udom,$uname,$enrolltypes->{$udom});
343: }
344: }
345: }
346: }
347: if ($selfenroll) {
348: my $usec = $selfenroll_section;
349: if ($selfenroll_section eq 'none') {
350: $usec = '';
351: }
352: if ($selfenroll_registered) {
353: my ($registered,$instsec,$message) = &check_registered($cdom,$cnum);
354: $usec = $instsec;
355: if (!$registered) {
356: $r->print('<h3>'.&mt('Self-enrollment unavailable').'</h3>'.&mt('Self-enrollment is restricted to students officially registered for this course.').'<br />');
357: if ($message) {
358: $r->print($message);
359: } else {
360: $r->print(&mt('As you are not currently registered for this course, self-enrollment is unavailable.'));
361: }
362: return;
363: }
364: }
365: my $enrollresult =
366: &Apache::lonnet::modify_student_enrollment($udom,$uname,undef,undef,undef,
367: undef,undef,$usec,$selfenroll_access_end,$selfenroll_access_start,
368: 'manual',undef,$cdom.'_'.$cnum,$selfenroll);
369: if ($enrollresult eq 'ok') {
370: my (%userroles,%newrole,%newgroups);
371: my $role = 'st';
372: my $area = '/'.$cdom.'/'.$cnum;
373: my $spec = $role.'.'.$area;
374: if ($usec ne '') {
375: $spec .= '/'.$usec;
376: $area .= '/'.$usec;
377: }
378: &Apache::lonnet::standard_roleprivs(\%newrole,$role,$cdom,$spec,$cnum,
379: $area);
380: &Apache::lonnet::set_userprivs(\%userroles,\%newrole,%newgroups);
381: $userroles{'user.role.'.$spec} = $selfenroll_access_start.'.'.$selfenroll_access_end;
382: &Apache::lonnet::appenv(\%userroles,[$role,'cm']);
383: $r->print('<h3>'.&mt('Enrollment process complete').'</h3>');
384: if ($selfenroll_access_end && $selfenroll_access_end <= $now) {
385: $r->print(&mt('The end date for access to this course for users who self-enroll has passed.').'<br />'.&mt('Consequently, although a new role was created for you in the course, it is an inactive role which does not provide access to the course.'));
386: } else {
387: $r->print(&mt('Self-enrollment in this course was successful.').'<br />');
388: my $showstart = &Apache::lonlocal::locallocaltime($selfenroll_access_start);
389: my $showend = &Apache::lonlocal::locallocaltime($selfenroll_access_end);
390: if ($selfenroll_access_start && $selfenroll_access_start >$now) {
391: $r->print(&mt('The start date for access to this course for users who self-enroll has yet to be reached.').'<br />'.&mt('Consequently, although a new role was created for you in the course, you will not be able to select this role until [_1].',$showstart));
392: } else {
393: my $newrole = 'st./'.$cdom.'/'.$cnum;
394: if ($usec ne '') {
395: $newrole .= '/'.$usec;
396: }
397: my $rolelink = &jump_to_role($newrole);
398: $r->print(&mt('Your new role is available immediately, and will provide access to the course until [_1].',$showend).'<br /><br />'."\n".
399: $rolelink);
400: }
401: }
402: } else {
403: $r->print('<h3>'.&mt('Enrollment incomplete').'</h3>'.
404: &mt('Self-enrollment in this course failed.'));
405: if ($enrollresult ne '') {
406: $r->print('<span class="LC_error">'.$enrollresult.'</span>');
407: }
408: }
409: } else {
410: $r->print('<h3>'.&mt('Self-enrollment unavailable').'</h3>'.
411: &mt('You are not permitted to enroll yourself in this course.').'<br />');
412: $r->print(&print_selfenroll_types($longtypes));
413: }
414: return;
415: }
416:
417: sub user_can_selfenroll {
418: my ($udom,$uname,$domenrolltypes) = @_;
419: my $selfenroll = 0;
420: my @info = ['inststatus'];
421: my %userhash = &Apache::lonnet::userenvironment($udom,$uname,@info);
422: my @inststatuses;
423: if ($userhash{'inststatus'} eq '') {
424: push(@inststatuses,'other');
425: } else {
426: my @esc_statuses = split(/:/,$userhash{'inststatus'});
427: @inststatuses = map { &unescape($_); } (@esc_statuses);
428: }
429: foreach my $type (@inststatuses) {
430: if (ref($domenrolltypes) eq 'ARRAY') {
431: if (grep(/^\Q$type\E$/,@{$domenrolltypes})) {
432: $selfenroll = 1;
433: last;
434: }
435: }
436: }
437: return $selfenroll;
438: }
439:
440: sub jump_to_role {
441: my ($role) = @_;
442: my $output = <<"END";
443: <script type="text/javascript">
444: function SelectRole() {
445: document.rolechoice.selectrole.value = '1';
446: document.rolechoice.submit();
447: }
448: </script>
449: END
450: $output .= '<a href="javascript:SelectRole()">'."\n".
451: &mt('Enter course now').'</a>'."\n".
452: '<form name="rolechoice" action="/adm/roles" method="post">'."\n".
453: '<input type="hidden" name="selectrole" value="" />'."\n".
454: '<input type="hidden" name="'.$role.'" value="1" />'."\n".
455: '</form>';
456: return $output;
457: }
458:
459: sub get_selfenroll_filters {
460: my ($selfenroll_types,$domain) = @_;
461: my (%enrolltypes,%longtypes,$alldoms);
462: my @selfenrolldoms = split(/;/,$selfenroll_types);
463: foreach my $item (@selfenrolldoms) {
464: my ($selfdom,$type_str) = split(/:/,$item);
465: if ($selfdom eq '*') {
466: $alldoms = 1;
467: last;
468: }
469: if ($domain ne '') {
470: next if ($selfdom ne $domain);
471: }
472: if ($selfdom =~ /^$match_domain$/) {
473: if (&Apache::lonnet::domain($selfdom) ne '') {
474: my @types = split(/,/,$type_str);
475: my ($othertitle,$usertypes,$types) =
476: &Apache::loncommon::sorted_inst_types($selfdom);
477: if (ref($usertypes) eq 'HASH') {
478: my $anytype = 1;
479: foreach my $key (keys(%{$usertypes})) {
480: if (!grep(/^\Q$key\E$/,@types)) {
481: $anytype = 0;
482: last;
483: }
484: }
485: if ($anytype) {
486: if (!(grep(/^other$/,@types))) {
487: $anytype = 0;
488: }
489: }
490: $usertypes->{'any'} = &mt('Any users');
491: $usertypes->{'other'} = &mt('Others');
492: if ($anytype) {
493: @{$enrolltypes{$selfdom}} = ('any');
494: } else {
495: @{$enrolltypes{$selfdom}} = @types;
496: }
497: @{$longtypes{$selfdom}} =
498: map {$usertypes->{$_}} @{$enrolltypes{$selfdom}}
499: }
500: }
501: }
502: }
503: return (\%enrolltypes,\%longtypes,$alldoms);
504: }
505:
506: sub print_selfenroll_types {
507: my ($longtypes,$domain) = @_;
508: my $output;
509: if (ref($longtypes) eq 'HASH') {
510: if ($domain ne '') {
511: my $domdesc = &Apache::lonnet::domain($domain,'description');
512: if (ref($longtypes->{$domain}) eq 'ARRAY') {
513: if (grep(/^any$/,@{$longtypes->{$domain}})) {
514: $output = &mt('Self-enrollment in this course is available to any user affiliated with [_1].',$domdesc);
515: } else {
516: my $status_str = join(', ',@{$longtypes->{$domain}});
517: $output = &mt('Self-enrollment in this course is only available to users affiliated with [_1] who have the following status: "[_2]".',$domdesc,$status_str);
518: }
519: } else {
520: $output = &mt('Self-enrollment is not currently available for this course for users affiliated with [_1].',$domdesc);
521: }
522: } elsif (keys(%{$longtypes}) > 0) {
523: $output = &mt('Self-enrollment in this course is only available to users affiliated with the following institutions, and who have the required status:').' <ul>';
524: foreach my $selfdom (sort(keys(%{$longtypes}))) {
525: my $selfdomdesc = &Apache::lonnet::domain($selfdom,'description');
526: if (ref($longtypes->{$selfdom}) eq 'ARRAY') {
527: $output .= '<li>'.$selfdomdesc.': '.join(', ',@{$longtypes->{$selfdom}}).'</li>';
528: }
529: }
530: $output .= '</ul>';
531: } else {
532: $output = &mt('Self-enrollment is not currently available for this course.');
533: }
534: }
535: return $output;
536: }
537:
538: sub check_registered {
539: my ($cdom,$cnum) = @_;
540: my ($registered,$instsec,$message);
541: my %settings = &Apache::lonnet::get('environment',['internal.coursecode',
542: 'internal.sectionnums',
543: 'internal.crosslistings'],$cdom,$cnum);
544: my (@allcourses,%LC_code,%affiliates,%reply);
545: &Apache::loncommon::get_institutional_codes(\%settings,\@allcourses,\%LC_code);
546: if (@allcourses > 0) {
547: @{$affiliates{$cnum}} = @allcourses;
548: my $outcome = &Apache::lonnet::fetch_enrollment_query('updatenow',\%affiliates,\%reply,$cdom,$cnum);
549: if ($outcome eq 'ok') {
550: if ($reply{$cnum} > 0) {
551: foreach my $class (@allcourses) {
552: my %enrolled;
553: my $dir = $Apache::lonnet::perlvar{'lonDaemons'};
554: my %place = &LONCAPA::Enrollment::place_hash();
555: &LONCAPA::Enrollment::parse_classlist($dir,$cdom,$cnum,$class,
556: \%place,$LC_code{$class},\%enrolled);
557: if (defined($enrolled{$env{'user.name'}})) {
558: $registered = 1;
559: $instsec = $LC_code{$class};
560: last;
561: }
562: }
563: } else {
564: $message = &mt('Your registration status could not be verified.');
565: }
566: } else {
567: $message = &mt('Your registration status could not determined, because a problem occurred retrieving data.');
568: }
569: } else {
570: $message = &mt('As no institutional course sections are currently associated with this course, your registration status is undetermined.');
571: }
572: return ($registered,$instsec,$message);
573: }
574:
575: 1;
576:
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