Added message string for when a user does not have permissions to view forum discussi...
[moodle.git] / mod / forum / discuss.php
CommitLineData
41905731 1<?php // $Id$
501cdbd8 2
3// Displays a post, and all the posts below it.
4// If no post is given, displays all posts in a discussion
5
b0e3a925 6 require_once("../../config.php");
7 require_once("lib.php");
501cdbd8 8
c992ff85 9 $d = required_param('d', PARAM_INT); // Discussion ID
10 $parent = optional_param('parent', 0, PARAM_INT); // If set, then display this post and all children.
11 $mode = optional_param('mode', 0, PARAM_INT); // If set, changes the layout of the thread
12 $move = optional_param('move', 0, PARAM_INT); // If set, moves this discussion to another forum
13 $mark = optional_param('mark', 0, PARAM_INT); // Used for tracking read posts if user initiated.
14 $postid = optional_param('postid', 0, PARAM_INT); // Used for tracking read posts if user initiated.
501cdbd8 15
0fa18d5a 16 if (!$discussion = get_record("forum_discussions", "id", $d)) {
94361e02 17 error("Discussion ID was incorrect or no longer exists");
501cdbd8 18 }
19
0fa18d5a 20 if (!$course = get_record("course", "id", $discussion->course)) {
501cdbd8 21 error("Course ID is incorrect - discussion is faulty");
22 }
23
0fa18d5a 24 if (!$forum = get_record("forum", "id", $discussion->forum)) {
68258534 25 notify("Bad forum ID stored in this discussion");
26 }
27
0fa18d5a 28 if (!$cm = get_coursemodule_from_instance('forum', $forum->id, $course->id)) {
bbbf2d40 29 error('Course Module ID was incorrect');
30 }
9af1611a 31 $modcontext = get_context_instance(CONTEXT_MODULE, $cm->id);
0468976c 32 $canviewdiscussion = has_capability('mod/forum:viewdiscussion', $modcontext);
0fa18d5a 33
bbbf2d40 34
35 if ($forum->type == "news") {
36 if (!($canviewdiscussion || $USER->id == $discussion->userid
fbc21e82 37 || (($discussion->timestart == 0 || $discussion->timestart <= time())
38 && ($discussion->timeend == 0 || $discussion->timeend > time())))) {
39 error('Discussion ID was incorrect or no longer exists', "$CFG->wwwroot/mod/forum/view.php?f=$forum->id");
40 }
41
68258534 42 } else {
43 if (! $cm = get_coursemodule_from_instance("forum", $discussion->forum, $course->id)) {
44 error("Course Module ID was incorrect");
45 }
46 require_course_login($course, false, $cm);
68ddf8bc 47 }
48
1fc49f00 49
8f0cd6ef 50 if (!empty($move)) {
0468976c 51 if (has_capability('mod/forum:movediscussions', $modcontext)) {
bbbf2d40 52 error("You do not have the permission to move this discussion!");
1fc49f00 53 }
54 if ($forum = get_record("forum", "id", $move)) {
cc2b7ea5 55 if (!forum_move_attachments($discussion, $move)) {
56 notify("Errors occurred while moving attachment directories - check your file permissions");
57 }
bbbf2d40 58 set_field("forum_discussions", "forum", $forum->id, "id", $discussion->id);
1fc49f00 59 $discussion->forum = $forum->id;
69d79bc3 60 if ($cm = get_coursemodule_from_instance("forum", $forum->id, $course->id)) {
61 add_to_log($course->id, "forum", "move discussion", "discuss.php?d=$discussion->id", "$discussion->id",
62 $cm->id);
63 } else {
64 add_to_log($course->id, "forum", "move discussion", "discuss.php?d=$discussion->id", "$discussion->id");
65 }
8de14dc7 66 $discussionmoved = true;
5a39def9 67 require_once('rsslib.php');
68 require_once($CFG->libdir.'/rsslib.php');
69
70 // Delete the RSS files for the 2 forums because we want to force
71 // the regeneration of the feeds since the discussions have been
72 // moved.
73 if (!forum_rss_delete_file($forum) || !forum_rss_delete_file($fromforum)) {
74 notify('Could not purge the cached RSS feeds for the source and/or'.
75 'destination forum(s) - check your file permissionsforums');
76 }
1fc49f00 77 } else {
78 error("You can't move to that forum - it doesn't exist!");
79 }
80 }
81
1fc49f00 82 $logparameters = "d=$discussion->id";
83 if ($parent) {
839f2456 84 $logparameters .= "&amp;parent=$parent";
501cdbd8 85 }
69d79bc3 86
87 if ($cm = get_coursemodule_from_instance("forum", $forum->id, $course->id)) {
88 add_to_log($course->id, "forum", "view discussion", "discuss.php?$logparameters", "$discussion->id", $cm->id);
89 } else {
90 add_to_log($course->id, "forum", "view discussion", "discuss.php?$logparameters", "$discussion->id");
91 }
501cdbd8 92
93 unset($SESSION->fromdiscussion);
94
279826e2 95 if ($mode) {
acb50c1b 96 if (isguest()) {
97 $USER->preference['forum_displaymode'] = $mode; // don't save it in database
98 } else {
99 set_user_preference('forum_displaymode', $mode);
100 }
279826e2 101 }
501cdbd8 102
acb50c1b 103 $displaymode = get_user_preferences('forum_displaymode', $CFG->forum_displaymode);
501cdbd8 104
e92ea3d8 105 if ($parent) {
279826e2 106 if (abs($displaymode) == 1) { // If flat AND parent, then force nested display this time
e92ea3d8 107 $displaymode = 3;
108 }
109 } else {
501cdbd8 110 $parent = $discussion->firstpost;
c78ac798 111 $navtail = format_string($discussion->name);
501cdbd8 112 }
073286f0 113
ff1dc046 114 if (!forum_user_can_view_post($parent, $course, $cm, $forum, $discussion)) {
115 error('You do not have permissions to view this post', "$CFG->wwwroot/mod/forum/view.php?f=$forum->id");
073286f0 116 }
501cdbd8 117
11b0c469 118 if (! $post = forum_get_post_full($parent)) {
501cdbd8 119 error("Discussion no longer exists", "$CFG->wwwroot/mod/forum/view.php?f=$forum->id");
120 }
121
eaf50aef 122 if (forum_tp_can_track_forums($forum) && forum_tp_is_tracked($forum) &&
123 $CFG->forum_usermarksread) {
f37da850 124 if ($mark == 'read') {
125 forum_tp_add_read_record($USER->id, $postid, $discussion->id, $forum->id);
126 } else if ($mark == 'unread') {
127 forum_tp_delete_read_records($USER->id, $postid);
128 }
129 }
130
61e96406 131 if (empty($navtail)) {
c78ac798 132 $navtail = "<a href=\"discuss.php?d=$discussion->id\">".format_string($discussion->name,true)."</a> -> ".format_string($post->subject);
501cdbd8 133 }
134
3849dae8 135 $navmiddle = "<a href=\"../forum/index.php?id=$course->id\">".get_string("forums", "forum")."</a> -> <a href=\"../forum/view.php?f=$forum->id\">".format_string($forum->name,true)."</a>";
501cdbd8 136
6f1cc8d6 137 $searchform = forum_search_form($course);
97485d07 138
501cdbd8 139 if ($course->category) {
c78ac798 140 print_header("$course->shortname: ".format_string($discussion->name), "$course->fullname",
72b4e283 141 "<a href=\"../../course/view.php?id=$course->id\">$course->shortname</a> ->
8f0cd6ef 142 $navmiddle -> $navtail", "", "", true, $searchform, navmenu($course, $cm));
501cdbd8 143 } else {
c78ac798 144 print_header("$course->shortname: ".format_string($discussion->name), "$course->fullname",
8f0cd6ef 145 "$navmiddle -> $navtail", "", "", true, $searchform, navmenu($course, $cm));
501cdbd8 146 }
147
c6d691dc 148
9197e147 149/// Check to see if groups are being used in this forum
150/// If so, make sure the current person is allowed to see this discussion
c6d691dc 151/// Also, if we know they should be able to reply, then explicitly set $canreply
152
153 $canreply = NULL; /// No override one way or the other
45c38eef 154 $groupmode = groupmode($course, $cm);
155
d0087b2f 156
0468976c 157 if ($groupmode and !has_capability('moodle/site:accessallgroups', $modcontext)) { // Groups must be kept separate
fa22fd5f 158 //change this to ismember
bbbf2d40 159 $mygroupid = mygroupid($course->id); //only useful if 0, otherwise it's an array now
c6d691dc 160 if ($groupmode == SEPARATEGROUPS) {
161 require_login();
162
fa22fd5f 163 if ((empty($mygroupid) and $discussion->groupid == -1) || (ismember($discussion->groupid) || $mygroupid == $discussion->groupid)) {
c6d691dc 164 $canreply = true;
2862b309 165 } elseif ($discussion->groupid == -1) {
166 $canreply = false;
c6d691dc 167 } else {
168 print_heading("Sorry, you can't see this discussion because you are not in this group");
cd8d4471 169 print_footer($course);
c6d691dc 170 die;
171 }
172
173 } else if ($groupmode == VISIBLEGROUPS) {
bbbf2d40 174 $canreply = ( (empty($mygroupid) && $discussion->groupid == -1) ||
175 (ismember($discussion->groupid) || $mygroupid == $discussion->groupid) &&
0468976c 176 has_capability('mod/forum:replypost', $modcontext) );
9197e147 177 }
178 }
179
d0087b2f 180
9197e147 181
c6d691dc 182/// Print the controls across the top
183
d5bbc556 184 echo '<table width="100%"><tr><td width="33%">';
c6d691dc 185
0468976c 186 if ($groupmode == VISIBLEGROUPS or ($groupmode and has_capability('moodle/site:accessallgroups', $modcontext))) {
d5bbc556 187 if ($groups = get_records_menu('groups', 'courseid', $course->id, 'name ASC', 'id,name')) {
839f2456 188 print_group_menu($groups, $groupmode, $discussion->groupid, "view.php?id=$cm->id&amp;group=");
c6d691dc 189 }
190 }
191
192 echo "</td><td width=\"33%\">";
ec9c0d44 193 forum_print_mode_form($discussion->id, $displaymode);
c6d691dc 194
02ebf404 195 echo "</td><td width=\"33%\">";
0468976c 196 if (has_capability('mod/forum:movediscussions', $modcontext)) { // Popup menu to move discussions to other forums
cccb016a 197 if ($forums = get_all_instances_in_course("forum", $course)) {
fcc69042 198 if ($course->format == 'weeks') {
199 $strsection = get_string("week");
200 } else {
201 $strsection = get_string("topic");
202 }
203 $section = -1;
1fc49f00 204 foreach ($forums as $courseforum) {
fcc69042 205 if (!empty($courseforum->section) and $section != $courseforum->section) {
206 $forummenu[] = "-------------- $strsection $courseforum->section --------------";
207 }
208 $section = $courseforum->section;
1fc49f00 209 if ($courseforum->id != $forum->id) {
839f2456 210 $url = "discuss.php?d=$discussion->id&amp;move=$courseforum->id";
3849dae8 211 $forummenu[$url] = format_string($courseforum->name,true);
1fc49f00 212 }
213 }
214 if (!empty($forummenu)) {
215 echo "<div align=\"right\">";
8f0cd6ef 216 echo popup_form("$CFG->wwwroot/mod/forum/", $forummenu, "forummenu", "",
1fc49f00 217 get_string("movethisdiscussionto", "forum"), "", "", true);
218 echo "</div>";
219 }
220 }
221 }
02ebf404 222 echo "</td></tr></table>";
1fc49f00 223
a4f495bf 224 if (!empty($forum->blockafter) && !empty($forum->blockperiod)) {
225 $a->blockafter = $forum->blockafter;
226 $a->blockperiod = get_string('secondstotime'.$forum->blockperiod);
227 notify(get_string('thisforumisthrottled','forum',$a));
228 }
229
0468976c 230 if ($forum->type == 'qanda' && !has_capability('mod/forum:viewqandawithoutposting', $modcontext) &&
bbbf2d40 231 !forum_user_has_posted($forum->id,$discussion->id,$USER->id)) {
098d27d4 232 notify(get_string('qandanotify','forum'));
233 }
234
8de14dc7 235 if (isset($discussionmoved)) {
3849dae8 236 notify(get_string("discussionmoved", "forum", format_string($forum->name,true)));
8de14dc7 237 }
238
c6d691dc 239/// Print the actual discussion
0468976c 240 $canrate = has_capability('mod/forum:rate', $modcontext);
bbbf2d40 241 forum_print_discussion($course, $forum, $discussion, $post, $displaymode, $canreply, $canrate);
c6d691dc 242
501cdbd8 243 print_footer($course);
244
0468976c 245?>