Annotation of loncom/interface/groupboards.pm, revision 1.2
1.1 raeburn 1: # The LearningOnline Network
2: # Group Bulletin Boards Manager
3: #
4: # Copyright Michigan State University Board of Trustees
5: #
6: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
7: #
8: # LON-CAPA is free software; you can redistribute it and/or modify
9: # it under the terms of the GNU General Public License as published by
10: # the Free Software Foundation; either version 2 of the License, or
11: # (at your option) any later version.
12: #
13: # LON-CAPA is distributed in the hope that it will be useful,
14: # but WITHOUT ANY WARRANTY; without even the implied warranty of
15: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16: # GNU General Public License for more details.
17: #
18: # You should have received a copy of the GNU General Public License
19: # along with LON-CAPA; if not, write to the Free Software
20: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21: #
22: # /home/httpd/html/adm/gpl.txt
23: #
24: # http://www.lon-capa.org/
25: #
26:
27: package Apache::groupboards;
1.2 ! albertel 28:
1.1 raeburn 29: use strict;
30: use Apache::Constants qw(:common :http);
31: use Apache::loncommon;
32: use Apache::lonnet;
33: use Apache::lonnavmaps;
34: use Apache::lonuserstate;
35: use Apache::lonratedt;
36: use Apache::lonlocal;
37: use LONCAPA;
38:
39: sub handler {
40: my ($r) = @_;
41: &Apache::loncommon::content_type($r,'text/html');
42: $r->send_http_header;
43: return OK if $r->header_only;
44:
45: # Needs to be in a course
46: if (! ($env{'request.course.fn'})) {
47: # Not in a course
48: $env{'user.error.msg'}=
49: "/adm/groupboards:mdg:0:0:Cannot edit or view course groups";
50: return HTTP_NOT_ACCEPTABLE;
51: }
52:
53: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
54: ['group']);
55:
56: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
57: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
58: my $now = time;
59: my $crstype = &Apache::loncommon::course_type();
60: my $gpterm = &Apache::loncommon::group_term();
61: my $bodytitle = &mt('[_1] Discussion Boards',$crstype);
62: my $group = $env{'form.group'};
63: if (!defined($group)) {
64: $r->print(&Apache::loncommon::start_page($bodytitle));
65: $r->print(&mt('No [_1] defined, so there are no [_1] discussion boards to display',$gpterm));
66: $r->print(&Apache::loncommon::end_page());
67: return OK;
68: }
69: my $can_create=&Apache::lonnet::allowed('cgb',$env{'request.course.id'}.
70: '/'.$group);
71: my $can_view=&Apache::lonnet::allowed('pgd',$env{'request.course.id'}.
72: '/'.$group);
73: if (defined($env{'form.newbul'})) {
74: if (($can_create) || (&Apache::lonnet::allowed('mdg',$env{'request.course.id'}))) {
75: $r->print(&Apache::loncommon::start_page($bodytitle));
1.2 ! albertel 76: my ($outcome,$symb,$newurl,$bbtitle) =
! 77: &create_board($cdom,$cnum,$group,$env{'form.newbul'});
1.1 raeburn 78: if ($outcome eq 'ok') {
79: my ($furl,$ferr)= &Apache::lonuserstate::readmap($cdom.'/'.$cnum);
80: $r->print(&mt('The new discussion board was added successfully.<br />'));
81: $r->print('<table border="0"><tr><td>'.
82: '<a href="'.$newurl.'?register=1&symb='.$symb.
83: '&group='.$group.'">'.
84: &mt('Edit [_1] board',$bbtitle).'</a></td>'.
85: '<td> </td><td>'.
86: '<a href="/adm/groupboards?group='.$group.'">'.
87: &mt('View all group discussion boards').
88: '</a></td></tr></table>');
89: } else {
1.2 ! albertel 90: $r->print(&mt('There was a problem creating the new discussion board - [_1]','<span class="LC_error">'.$outcome.'</span>').'<br /><a href="/adm/groupboards?group='.$group.'">'.
1.1 raeburn 91: &mt('Return to discussion boards').'</a>');
92: }
93: $r->print(&Apache::loncommon::end_page());
94: return OK;
95: }
96: }
97: my $jscript;
98: if (($can_create) || (&Apache::lonnet::allowed('mdg',$env{'request.course.id'}))) {
99: $jscript = qq|
100: function makebulboard() {
101: var title=prompt('Discussion Board Title');
102: if (title) {
103: this.document.forms.newbb.newbul.value=
104: title+'=/adm/$cdom/$cnum/$now/bulletinboard';
105: this.document.forms.newbb.submit();
106: }
107: }
108: |;
109: }
110: $r->print(&Apache::loncommon::start_page($bodytitle,
111: '<script type="text/javascript">'.
112: $jscript.'</script>'));
113: if (!$can_view) {
114: $r->print(&mt('You do not have privileges to view discussion boards in this [_1]',$crstype));
115: return OK;
116: }
117: my $navmap = Apache::lonnavmaps::navmap->new();
118: my @groupboards;
119: my %boards;
120: my $grpbbmap = &get_bbfolder_url($cdom,$cnum,$group);
121: if ($grpbbmap) {
122: my $bbfolderres = $navmap->getResourceByUrl($grpbbmap);
123: if ($bbfolderres) {
124: my @boards = $navmap->retrieveResources($bbfolderres,undef,0,0);
125: foreach my $res (@boards) {
126: my $url = $res->src();
127: if ($url =~ m|^/adm/\Q$cdom\E/\Q$cnum\E/\d+/bulletinboard|) {
1.2 ! albertel 128: push(@groupboards,$res->symb());
! 129: $boards{$res->symb()} = {
! 130: title => $res->title(),
! 131: url => $res->src(),
! 132: };
1.1 raeburn 133: }
134: }
135: }
136: }
137: if (($can_create) || (&Apache::lonnet::allowed('mdg',$env{'request.course.id'}))) {
138: $r->print('<form method="post" name="newbb" action="/adm/groupboards">'.
139: "\n".'<input type="button" name="bbbutton" value="'.
140: &mt('New Discussion Board').
141: '" onClick="javascript:makebulboard();" />'."\n".
142: ' <input type="hidden" name="newbul" />'."\n".
143: ' <input type="hidden" name="group" value="'.$group.'" />'.
144: "\n".'</form><br />');
145: }
146: if (@groupboards) {
147: foreach my $board (@groupboards) {
1.2 ! albertel 148: $r->print('<a href="'.$boards{$board}{'url'}.'?register=1&symb='.$board.'&group='.$group.'">'.$boards{$board}{'title'}.'</a><br />');
1.1 raeburn 149: }
150: } else {
151: $r->print(&mt('There are currently no discussion boards in this [_1].',
152: $gpterm));
153: }
154: $r->print(&Apache::loncommon::end_page());
155: return OK;
156: }
157:
158: sub create_board {
159: my ($cdom,$cnum,$group,$newboard,$symb) = @_;
160: my ($bbtitle,$newurl)=split(/\=/,$newboard);
161: $bbtitle=&unescape($bbtitle);
162: $newurl=&unescape($newurl);
163: my $allbbsmap = &get_bbfolder_url($cdom,$cnum,$group);
164: my ($outcome,$symb);
165: if ($allbbsmap =~ m|^/uploaded|) {
166: my ($errtext,$fatal)=&Apache::lonratedt::mapread($allbbsmap);
167: if (!$fatal) {
168: my $newidx=&Apache::lonratedt::getresidx($newurl);
169: $Apache::lonratedt::resources[$newidx]=$bbtitle.':'.$newurl.
170: ':false:normal:res';
1.2 ! albertel 171: push(@Apache::lonratedt::order,$newidx);
1.1 raeburn 172: my ($errtext,$fatal)=&Apache::lonratedt::storemap($allbbsmap,1);
173: if ($fatal) {
1.2 ! albertel 174: $outcome = "error: failed to store discussion boards map - $errtext\n";
1.1 raeburn 175: } else {
176: $outcome = 'ok';
177: $symb = &Apache::lonnet::encode_symb($allbbsmap,$newidx,$newurl);
178: }
179: } else {
1.2 ! albertel 180: $outcome = "error: failed to read all discussion boards map - $errtext\n";
1.1 raeburn 181: }
182: } else {
1.2 ! albertel 183: $outcome = 'error: discussion boards folder absent, '.
1.1 raeburn 184: 'or in unexpected location - '.$allbbsmap."\n";
185: }
186: return ($outcome,$symb,$newurl,$bbtitle);
187: }
188:
189: sub get_bbfolder_url {
190: my ($cdom,$cnum,$group) = @_;
191: my %curr_groups = &Apache::longroup::coursegroups($cdom,$cnum,$group);
192: my $grpbbmap;
193: if (%curr_groups) {
194: my %group_info = &Apache::longroup::get_group_settings(
195: $curr_groups{$group});
196: my $creation = $group_info{'creation'};
197: my $bbfolder = $creation + 1;
198: my $crspath = '/uploaded/'.$cdom.'/'.$cnum.'/';
199: $grpbbmap = $crspath.'default_'.$bbfolder.'.sequence';
200: }
201: return $grpbbmap;
202: }
203:
204: 1;
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