MDL-13375 fix for duplicate itemnumbers in outcome items; merged from MOODLE_19_STABLE
[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");
f0ef40c5 7
83da3d28 8 $d = required_param('d', PARAM_INT); // Discussion ID
9 $parent = optional_param('parent', 0, PARAM_INT); // If set, then display this post and all children.
10 $mode = optional_param('mode', 0, PARAM_INT); // If set, changes the layout of the thread
11 $move = optional_param('move', 0, PARAM_INT); // If set, moves this discussion to another forum
12 $fromforum = optional_param('fromforum', 0, PARAM_INT); // Needs to be set when we want to move a discussion.
87b0b499 13 $mark = optional_param('mark', '', PARAM_ALPHA); // Used for tracking read posts if user initiated.
83da3d28 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, $course->id)) {
bbbf2d40 29 error('Course Module ID was incorrect');
30 }
f0ef40c5 31 // move this down fix for MDL-6926
32 require_once("lib.php");
bf553d9e 33 require_course_login($course, true, $cm);
50e07a49 34
9af1611a 35 $modcontext = get_context_instance(CONTEXT_MODULE, $cm->id);
0468976c 36 $canviewdiscussion = has_capability('mod/forum:viewdiscussion', $modcontext);
0fa18d5a 37
bbbf2d40 38 if ($forum->type == "news") {
49a0ba94 39 if (!($USER->id == $discussion->userid || (($discussion->timestart == 0
40 || $discussion->timestart <= time())
fbc21e82 41 && ($discussion->timeend == 0 || $discussion->timeend > time())))) {
42 error('Discussion ID was incorrect or no longer exists', "$CFG->wwwroot/mod/forum/view.php?f=$forum->id");
43 }
68ddf8bc 44 }
45
1fc49f00 46
8f0cd6ef 47 if (!empty($move)) {
83da3d28 48
49 if (!$sourceforum = get_record('forum', 'id', $fromforum)) {
50 error('Cannot find which forum this discussion is being moved from');
51 }
52 if ($sourceforum->type == 'single') {
53 error('Cannot move discussion from a simple single discussion forum');
54 }
55
7c900d5d 56 require_capability('mod/forum:movediscussions', $modcontext);
57
1fc49f00 58 if ($forum = get_record("forum", "id", $move)) {
cc2b7ea5 59 if (!forum_move_attachments($discussion, $move)) {
60 notify("Errors occurred while moving attachment directories - check your file permissions");
61 }
bbbf2d40 62 set_field("forum_discussions", "forum", $forum->id, "id", $discussion->id);
1fc49f00 63 $discussion->forum = $forum->id;
69d79bc3 64 if ($cm = get_coursemodule_from_instance("forum", $forum->id, $course->id)) {
65 add_to_log($course->id, "forum", "move discussion", "discuss.php?d=$discussion->id", "$discussion->id",
66 $cm->id);
67 } else {
68 add_to_log($course->id, "forum", "move discussion", "discuss.php?d=$discussion->id", "$discussion->id");
69 }
8de14dc7 70 $discussionmoved = true;
83da3d28 71
5a39def9 72 require_once('rsslib.php');
73 require_once($CFG->libdir.'/rsslib.php');
74
75 // Delete the RSS files for the 2 forums because we want to force
76 // the regeneration of the feeds since the discussions have been
77 // moved.
83da3d28 78 if (!forum_rss_delete_file($forum) || !forum_rss_delete_file($sourceforum)) {
5a39def9 79 notify('Could not purge the cached RSS feeds for the source and/or'.
80 'destination forum(s) - check your file permissionsforums');
81 }
1fc49f00 82 } else {
499c6214 83 error('You can\'t move to that forum - it doesn\'t exist!');
1fc49f00 84 }
85 }
86
1fc49f00 87 $logparameters = "d=$discussion->id";
88 if ($parent) {
839f2456 89 $logparameters .= "&amp;parent=$parent";
501cdbd8 90 }
69d79bc3 91
92 if ($cm = get_coursemodule_from_instance("forum", $forum->id, $course->id)) {
93 add_to_log($course->id, "forum", "view discussion", "discuss.php?$logparameters", "$discussion->id", $cm->id);
94 } else {
95 add_to_log($course->id, "forum", "view discussion", "discuss.php?$logparameters", "$discussion->id");
96 }
501cdbd8 97
98 unset($SESSION->fromdiscussion);
99
279826e2 100 if ($mode) {
f2d042c4 101 set_user_preference('forum_displaymode', $mode);
279826e2 102 }
501cdbd8 103
acb50c1b 104 $displaymode = get_user_preferences('forum_displaymode', $CFG->forum_displaymode);
501cdbd8 105
e92ea3d8 106 if ($parent) {
279826e2 107 if (abs($displaymode) == 1) { // If flat AND parent, then force nested display this time
e92ea3d8 108 $displaymode = 3;
109 }
110 } else {
501cdbd8 111 $parent = $discussion->firstpost;
501cdbd8 112 }
073286f0 113
ff1dc046 114 if (!forum_user_can_view_post($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
c15b86dc 122 $post->modcontext = $modcontext;
123
eaf50aef 124 if (forum_tp_can_track_forums($forum) && forum_tp_is_tracked($forum) &&
125 $CFG->forum_usermarksread) {
f37da850 126 if ($mark == 'read') {
127 forum_tp_add_read_record($USER->id, $postid, $discussion->id, $forum->id);
128 } else if ($mark == 'unread') {
129 forum_tp_delete_read_records($USER->id, $postid);
130 }
131 }
132
cef1ce6a 133
6f1cc8d6 134 $searchform = forum_search_form($course);
87a462ea 135
136 $navlinks = array();
87a462ea 137 $navlinks[] = array('name' => format_string($discussion->name,true), 'link' => "discuss.php?d=$discussion->id", 'type' => 'title');
138 if ($parent != $discussion->firstpost) {
139 $navlinks[] = array('name' => format_string($post->subject,true), 'type' => 'title');
140 }
e3f58dfb 141
38e179a4 142 $navigation = build_navigation($navlinks, $cm);
e3f58dfb 143 print_header("$course->shortname: ".format_string($discussion->name), $course->fullname,
144 $navigation, "", "", true, $searchform, navmenu($course, $cm));
145
c6d691dc 146
9197e147 147/// Check to see if groups are being used in this forum
148/// If so, make sure the current person is allowed to see this discussion
c6d691dc 149/// Also, if we know they should be able to reply, then explicitly set $canreply
150
9276d742 151 if ($forum->type == 'news') {
152 $capname = 'mod/forum:replynews';
153 } else {
154 $capname = 'mod/forum:replypost';
155 }
45c38eef 156
c57da119 157 $canreply = false;
158 if (has_capability($capname, $modcontext)) {
159 $groupmode = groups_get_activity_groupmode($cm);
160 if ($groupmode) {
161 if (has_capability('moodle/site:accessallgroups', $modcontext)) {
162 $canreply = true;
163 } else {
164 if ($groupmode == SEPARATEGROUPS) {
165 require_login();
166 if ($discussion->groupid == -1) {
167 // can not reply to discussions for "All participants" in separate mode without accessallgroups cap
168 } else if (groups_is_member($discussion->groupid)) {
169 $canreply = true;
170 } else {
171 // this should not happen
172 print_heading("Sorry, you can't see this discussion because you are not in this group");
173 print_footer($course);
174 die;
175 }
176
177 } else if ($groupmode == VISIBLEGROUPS) {
178 if ($discussion->groupid == -1 or groups_is_member($discussion->groupid)) {
179 $canreply = true;
180 }
9276d742 181 }
c57da119 182 }
183 } else {
184 $canreply = true;
f5bf7ea8 185 }
21b89cb4 186 } else { // allow guests to see the link
187 $coursecontext = get_context_instance(CONTEXT_COURSE, $course->id);
188 if (has_capability('moodle/legacy:guest', $coursecontext, NULL, false)) { // User is a guest here!
189 $canreply = true;
190 }
9197e147 191 }
192
c6d691dc 193/// Print the controls across the top
194
a1857045 195 echo '<table width="100%" class="discussioncontrols"><tr><td>';
c6d691dc 196
87b0b499 197 // groups selector not needed here
c6d691dc 198
c7a049a3 199 echo "</td><td>";
ec9c0d44 200 forum_print_mode_form($discussion->id, $displaymode);
c7a049a3 201 echo "</td><td>";
cef1ce6a 202
203 if ($forum->type != 'single'
204 && has_capability('mod/forum:movediscussions', $modcontext)) {
205
206 // Popup menu to move discussions to other forums. The discussion in a
207 // single discussion forum can't be moved.
cccb016a 208 if ($forums = get_all_instances_in_course("forum", $course)) {
fcc69042 209 if ($course->format == 'weeks') {
210 $strsection = get_string("week");
211 } else {
212 $strsection = get_string("topic");
213 }
214 $section = -1;
1fc49f00 215 foreach ($forums as $courseforum) {
fcc69042 216 if (!empty($courseforum->section) and $section != $courseforum->section) {
217 $forummenu[] = "-------------- $strsection $courseforum->section --------------";
218 }
219 $section = $courseforum->section;
1fc49f00 220 if ($courseforum->id != $forum->id) {
83da3d28 221 $url = "discuss.php?d=$discussion->id&amp;fromforum=$discussion->forum&amp;move=$courseforum->id";
3849dae8 222 $forummenu[$url] = format_string($courseforum->name,true);
1fc49f00 223 }
224 }
225 if (!empty($forummenu)) {
41a22032 226 echo "<div style=\"float:right;\">";
8f0cd6ef 227 echo popup_form("$CFG->wwwroot/mod/forum/", $forummenu, "forummenu", "",
1fc49f00 228 get_string("movethisdiscussionto", "forum"), "", "", true);
229 echo "</div>";
230 }
231 }
232 }
02ebf404 233 echo "</td></tr></table>";
1fc49f00 234
a4f495bf 235 if (!empty($forum->blockafter) && !empty($forum->blockperiod)) {
236 $a->blockafter = $forum->blockafter;
237 $a->blockperiod = get_string('secondstotime'.$forum->blockperiod);
238 notify(get_string('thisforumisthrottled','forum',$a));
239 }
240
0468976c 241 if ($forum->type == 'qanda' && !has_capability('mod/forum:viewqandawithoutposting', $modcontext) &&
bbbf2d40 242 !forum_user_has_posted($forum->id,$discussion->id,$USER->id)) {
098d27d4 243 notify(get_string('qandanotify','forum'));
244 }
245
8de14dc7 246 if (isset($discussionmoved)) {
3849dae8 247 notify(get_string("discussionmoved", "forum", format_string($forum->name,true)));
8de14dc7 248 }
249
c6d691dc 250
49a0ba94 251/// Print the actual discussion
252 if (!$canviewdiscussion) {
253 notice(get_string('noviewdiscussionspermission', 'forum'));
254 } else {
255 $canrate = has_capability('mod/forum:rate', $modcontext);
256 forum_print_discussion($course, $forum, $discussion, $post, $displaymode, $canreply, $canrate);
257 }
258
501cdbd8 259 print_footer($course);
49a0ba94 260
501cdbd8 261
50e07a49 262?>