Annotation of loncom/interface/groupboards.pm, revision 1.3
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: $r->print('<table border="0"><tr><td>'.
1.3 ! raeburn 82: '<a href="'.$newurl.'?group='.$group.'">'.
1.1 raeburn 83: &mt('Edit [_1] board',$bbtitle).'</a></td>'.
84: '<td> </td><td>'.
85: '<a href="/adm/groupboards?group='.$group.'">'.
86: &mt('View all group discussion boards').
87: '</a></td></tr></table>');
88: } else {
1.2 albertel 89: $r->print(&mt('There was a problem creating the new discussion board - [_1]','<span class="LC_error">'.$outcome.'</span>').'<br /><a href="/adm/groupboards?group='.$group.'">'.
1.1 raeburn 90: &mt('Return to discussion boards').'</a>');
91: }
92: $r->print(&Apache::loncommon::end_page());
93: return OK;
94: }
95: }
96: my $jscript;
97: if (($can_create) || (&Apache::lonnet::allowed('mdg',$env{'request.course.id'}))) {
98: $jscript = qq|
99: function makebulboard() {
100: var title=prompt('Discussion Board Title');
101: if (title) {
102: this.document.forms.newbb.newbul.value=
103: title+'=/adm/$cdom/$cnum/$now/bulletinboard';
104: this.document.forms.newbb.submit();
105: }
106: }
107: |;
108: }
109: $r->print(&Apache::loncommon::start_page($bodytitle,
110: '<script type="text/javascript">'.
111: $jscript.'</script>'));
112: if (!$can_view) {
113: $r->print(&mt('You do not have privileges to view discussion boards in this [_1]',$crstype));
114: return OK;
115: }
116: my $navmap = Apache::lonnavmaps::navmap->new();
117: my @groupboards;
118: my %boards;
119: my $grpbbmap = &get_bbfolder_url($cdom,$cnum,$group);
120: if ($grpbbmap) {
121: my $bbfolderres = $navmap->getResourceByUrl($grpbbmap);
122: if ($bbfolderres) {
123: my @boards = $navmap->retrieveResources($bbfolderres,undef,0,0);
124: foreach my $res (@boards) {
125: my $url = $res->src();
126: if ($url =~ m|^/adm/\Q$cdom\E/\Q$cnum\E/\d+/bulletinboard|) {
1.2 albertel 127: push(@groupboards,$res->symb());
128: $boards{$res->symb()} = {
129: title => $res->title(),
130: url => $res->src(),
131: };
1.1 raeburn 132: }
133: }
134: }
135: }
136: if (($can_create) || (&Apache::lonnet::allowed('mdg',$env{'request.course.id'}))) {
137: $r->print('<form method="post" name="newbb" action="/adm/groupboards">'.
138: "\n".'<input type="button" name="bbbutton" value="'.
139: &mt('New Discussion Board').
140: '" onClick="javascript:makebulboard();" />'."\n".
141: ' <input type="hidden" name="newbul" />'."\n".
142: ' <input type="hidden" name="group" value="'.$group.'" />'.
143: "\n".'</form><br />');
144: }
145: if (@groupboards) {
146: foreach my $board (@groupboards) {
1.3 ! raeburn 147: $r->print('<a href="'.$boards{$board}{'url'}.'?group='.$group.'">'.$boards{$board}{'title'}.'</a><br />');
1.1 raeburn 148: }
149: } else {
150: $r->print(&mt('There are currently no discussion boards in this [_1].',
151: $gpterm));
152: }
153: $r->print(&Apache::loncommon::end_page());
154: return OK;
155: }
156:
157: sub create_board {
158: my ($cdom,$cnum,$group,$newboard,$symb) = @_;
159: my ($bbtitle,$newurl)=split(/\=/,$newboard);
160: $bbtitle=&unescape($bbtitle);
161: $newurl=&unescape($newurl);
162: my $allbbsmap = &get_bbfolder_url($cdom,$cnum,$group);
163: my ($outcome,$symb);
164: if ($allbbsmap =~ m|^/uploaded|) {
165: my ($errtext,$fatal)=&Apache::lonratedt::mapread($allbbsmap);
166: if (!$fatal) {
167: my $newidx=&Apache::lonratedt::getresidx($newurl);
168: $Apache::lonratedt::resources[$newidx]=$bbtitle.':'.$newurl.
169: ':false:normal:res';
1.2 albertel 170: push(@Apache::lonratedt::order,$newidx);
1.1 raeburn 171: my ($errtext,$fatal)=&Apache::lonratedt::storemap($allbbsmap,1);
172: if ($fatal) {
1.2 albertel 173: $outcome = "error: failed to store discussion boards map - $errtext\n";
1.1 raeburn 174: } else {
175: $outcome = 'ok';
176: $symb = &Apache::lonnet::encode_symb($allbbsmap,$newidx,$newurl);
177: }
178: } else {
1.2 albertel 179: $outcome = "error: failed to read all discussion boards map - $errtext\n";
1.1 raeburn 180: }
181: } else {
1.2 albertel 182: $outcome = 'error: discussion boards folder absent, '.
1.1 raeburn 183: 'or in unexpected location - '.$allbbsmap."\n";
184: }
185: return ($outcome,$symb,$newurl,$bbtitle);
186: }
187:
188: sub get_bbfolder_url {
189: my ($cdom,$cnum,$group) = @_;
190: my %curr_groups = &Apache::longroup::coursegroups($cdom,$cnum,$group);
191: my $grpbbmap;
192: if (%curr_groups) {
193: my %group_info = &Apache::longroup::get_group_settings(
194: $curr_groups{$group});
195: my $creation = $group_info{'creation'};
196: my $bbfolder = $creation + 1;
197: my $crspath = '/uploaded/'.$cdom.'/'.$cnum.'/';
198: $grpbbmap = $crspath.'default_'.$bbfolder.'.sequence';
199: }
200: return $grpbbmap;
201: }
202:
203: 1;
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