mod/forum/discuss.php

   1 <?PHP // $Id$
   2
   3 //  Displays a post, and all the posts below it.
   4 //  If no post is given, displays all posts in a discussion
   5
   6     require_once("../../config.php");
   7     require_once("lib.php");
   8
   9     require_variable($d);       // Discussion ID
  10     optional_variable($parent); // If set, then display this post and all children.
  11     optional_variable($mode);   // If set, changes the layout of the thread
  12     optional_variable($move);   // If set, moves this discussion to another forum
  13
  14     if (! $discussion = get_record("forum_discussions", "id", $d)) {
  15         error("Discussion ID was incorrect or no longer exists");
  16     }
  17
  18     if (! $course = get_record("course", "id", $discussion->course)) {
  19         error("Course ID is incorrect - discussion is faulty");
  20     }
  21
  22     if ($CFG->forcelogin) {
  23         require_login();
  24     }
  25
  26     if ($course->category) {
  27         require_login($course->id);
  28     }
  29
  30     if (!empty($move)) {
  31         if (!isteacher($course->id)) {
  32             error("Only teachers can do that!");
  33         }
  34         if ($forum = get_record("forum", "id", $move)) {
  35             if (!forum_move_attachments($discussion, $move)) {
  36                 notify("Errors occurred while moving attachment directories - check your file permissions");
  37             }
  38             set_field("forum_discussions", "forum", $forum->id, "id", $discussion->id);
  39             $discussion->forum = $forum->id;
  40             if ($cm = get_coursemodule_from_instance("forum", $forum->id, $course->id)) {
  41                 add_to_log($course->id, "forum", "move discussion", "discuss.php?d=$discussion->id", "$discussion->id",
  42                            $cm->id);
  43             } else {
  44                 add_to_log($course->id, "forum", "move discussion", "discuss.php?d=$discussion->id", "$discussion->id");
  45             }
  46             $discussionmoved = true;
  47         } else {
  48             error("You can't move to that forum - it doesn't exist!");
  49         }
  50     }
  51
  52     if (empty($forum)) {
  53         if (! $forum = get_record("forum", "id", $discussion->forum)) {
  54             notify("Bad forum ID stored in this discussion");
  55         }
  56     }
  57
  58     $logparameters = "d=$discussion->id";
  59     if ($parent) {
  60         $logparameters .= "&parent=$parent";
  61     }
  62
  63     if ($cm = get_coursemodule_from_instance("forum", $forum->id, $course->id)) {
  64         add_to_log($course->id, "forum", "view discussion", "discuss.php?$logparameters", "$discussion->id", $cm->id);
  65     } else {
  66         add_to_log($course->id, "forum", "view discussion", "discuss.php?$logparameters", "$discussion->id");
  67     }
  68
  69     unset($SESSION->fromdiscussion);
  70
  71     if ($mode) {
  72         set_user_preference("forum_displaymode", $mode);
  73     }
  74
  75     $displaymode = get_user_preferences("forum_displaymode", $CFG->forum_displaymode);
  76
  77     if ($parent) {
  78         if (abs($displaymode) == 1) {  // If flat AND parent, then force nested display this time
  79             $displaymode = 3;
  80         }
  81     } else {
  82         $parent = $discussion->firstpost;
  83         $navtail = "$discussion->name";
  84     }
  85
  86     if (! $post = forum_get_post_full($parent)) {
  87         error("Discussion no longer exists", "$CFG->wwwroot/mod/forum/view.php?f=$forum->id");
  88     }
  89
  90     if (empty($navtail)) {
  91         $navtail = "<A HREF=\"discuss.php?d=$discussion->id\">$discussion->name</A> -> $post->subject";
  92     }
  93
  94     $navmiddle = "<A HREF=\"../forum/index.php?id=$course->id\">".get_string("forums", "forum")."</A> -> <A HREF=\"../forum/view.php?f=$forum->id\">$forum->name</A>";
  95
  96     $searchform = forum_print_search_form($course, "", true, "plain");
  97
  98     if ($course->category) {
  99         print_header("$course->shortname: $discussion->name", "$course->fullname",
 100                  "<A HREF=../../course/view.php?id=$course->id>$course->shortname</A> ->
 101                   $navmiddle -> $navtail", "", "", true, $searchform, navmenu($course, $cm));
 102     } else {
 103         print_header("$course->shortname: $discussion->name", "$course->fullname",
 104                  "$navmiddle -> $navtail", "", "", true, $searchform, navmenu($course, $cm));
 105     }
 106
 107
 108 /// Check to see if groups are being used in this forum
 109 /// If so, make sure the current person is allowed to see this discussion
 110 /// Also, if we know they should be able to reply, then explicitly set $canreply
 111
 112     $canreply = NULL;   /// No override one way or the other
 113
 114     $groupmode = groupmode($course, $cm);
 115
 116     if ($groupmode and !isteacheredit($course->id)) {   // Groups must be kept separate
 117         if ($groupmode == SEPARATEGROUPS) {
 118             require_login();
 119
 120             if (mygroupid($course->id) == $discussion->groupid) {
 121                 $canreply = true;
 122             } else {
 123                 print_heading("Sorry, you can't see this discussion because you are not in this group");
 124                 print_footer();
 125                 die;
 126             }
 127
 128         } else if ($groupmode == VISIBLEGROUPS) {
 129             $canreply = (mygroupid($course->id) == $discussion->groupid);
 130         }
 131     }
 132
 133
 134 /// Print the controls across the top
 135
 136     echo "<table width=\"100%\"><tr><td width=\"33%\">";
 137
 138     if ($groupmode == VISIBLEGROUPS or ($groupmode and isteacheredit($course->id))) {
 139         if ($groups = get_records_menu("groups", "courseid", $course->id, "name ASC", "id,name")) {
 140             print_group_menu($groups, $groupmode, $discussion->groupid, "view.php?id=$cm->id&group=");
 141         }
 142     }
 143
 144     echo "</td><td width=\"33%\">";
 145     forum_print_mode_form($discussion->id, $displaymode);
 146
 147     echo "</td><td width=\"33%\">";
 148     if (isteacher($course->id)) {    // Popup menu to allow discussions to be moved to other forums
 149         if ($forums = get_all_instances_in_course("forum", $course)) {
 150             foreach ($forums as $courseforum) {
 151                 if ($courseforum->id != $forum->id) {
 152                     $url = "discuss.php?d=$discussion->id&move=$courseforum->id";
 153                     $forummenu[$url] = $courseforum->name;
 154                 }
 155             }
 156             if (!empty($forummenu)) {
 157                 echo "<div align=\"right\">";
 158                 echo popup_form("$CFG->wwwroot/mod/forum/", $forummenu, "forummenu", "",
 159                                  get_string("movethisdiscussionto", "forum"), "", "", true);
 160                 echo "</div>";
 161             }
 162         }
 163     }
 164     echo "</td></tr></table>";
 165
 166     if (isset($discussionmoved)) {
 167         notify(get_string("discussionmoved", "forum", $forum->name));
 168     }
 169
 170
 171 /// Print the actual discussion
 172
 173     forum_print_discussion($course, $forum, $discussion, $post, $displaymode, $canreply);
 174
 175
 176     print_footer($course);
 177
 178 ?>