mod/forum/index.php

   1 <?php  // $Id$
   2
   3     require_once("../../config.php");
   4     require_once("lib.php");
   5     require_once("$CFG->libdir/rsslib.php");
   6
   7     $id = optional_param('id', 0, PARAM_INT);                   // Course id
   8     $subscribe = optional_param('subscribe', null, PARAM_INT);  // Subscribe/Unsubscribe all forums
   9
  10     if ($id) {
  11         if (! $course = get_record('course', 'id', $id)) {
  12             error("Course ID is incorrect");
  13         }
  14     } else {
  15         if (! $course = get_site()) {
  16             error("Could not find a top-level course!");
  17         }
  18     }
  19
  20     require_course_login($course);
  21     $coursecontext = get_context_instance(CONTEXT_COURSE, $course->id);
  22
  23
  24     unset($SESSION->fromdiscussion);
  25
  26     add_to_log($course->id, 'forum', 'view forums', "index.php?id=$course->id");
  27
  28     $strforums       = get_string('forums', 'forum');
  29     $strforum        = get_string('forum', 'forum');
  30     $strdescription  = get_string('description');
  31     $strdiscussions  = get_string('discussions', 'forum');
  32     $strsubscribed   = get_string('subscribed', 'forum');
  33     $strunreadposts  = get_string('unreadposts', 'forum');
  34     $strtracking     = get_string('tracking', 'forum');
  35     $strmarkallread  = get_string('markallread', 'forum');
  36     $strtrackforum   = get_string('trackforum', 'forum');
  37     $strnotrackforum = get_string('notrackforum', 'forum');
  38     $strsubscribe    = get_string('subscribe', 'forum');
  39     $strunsubscribe  = get_string('unsubscribe', 'forum');
  40     $stryes          = get_string('yes');
  41     $strno           = get_string('no');
  42     $strrss          = get_string('rss');
  43     $strweek         = get_string('week');
  44     $strsection      = get_string('section');
  45
  46     $searchform = forum_search_form($course);
  47
  48
  49     // Start of the table for General Forums
  50
  51     $generaltable->head  = array ($strforum, $strdescription, $strdiscussions);
  52     $generaltable->align = array ('left', 'left', 'center');
  53
  54     if ($usetracking = forum_tp_can_track_forums()) {
  55         $untracked = forum_tp_get_untracked_forums($USER->id, $course->id);
  56
  57         $generaltable->head[] = $strunreadposts;
  58         $generaltable->align[] = 'center';
  59
  60         $generaltable->head[] = $strtracking;
  61         $generaltable->align[] = 'center';
  62     }
  63
  64     $subscribed_forums = forum_get_subscribed_forums($course);
  65
  66     if ($can_subscribe = (!isguestuser() && has_capability('moodle/course:view', $coursecontext))) {
  67         $generaltable->head[] = $strsubscribed;
  68         $generaltable->align[] = 'center';
  69     }
  70
  71     if ($show_rss = (($can_subscribe || $course->id == SITEID) &&
  72                      isset($CFG->enablerssfeeds) && isset($CFG->forum_enablerssfeeds) &&
  73                      $CFG->enablerssfeeds && $CFG->forum_enablerssfeeds)) {
  74         $generaltable->head[] = $strrss;
  75         $generaltable->align[] = 'center';
  76     }
  77
  78
  79     // Parse and organise all the forums.  Most forums are course modules but
  80     // some special ones are not.  These get placed in the general forums
  81     // category with the forums in section 0.
  82
  83     $forums = get_records('forum', 'course', $course->id);
  84
  85     $generalforums  = array();
  86     $learningforums = array();
  87     $modinfo =& get_fast_modinfo($course);
  88
  89     if (!isset($modinfo->instances['forum'])) {
  90         $modinfo->instances['forum'] = array();
  91     }
  92
  93     foreach ($modinfo->instances['forum'] as $forumid=>$cm) {
  94         if (!$cm->uservisible or !isset($forums[$forumid])) {
  95             continue;
  96         }
  97
  98         $forum = $forums[$forumid];
  99
 100         if (!$context = get_context_instance(CONTEXT_MODULE, $cm->id)) {
 101             continue;   // Shouldn't happen
 102         }
 103
 104         if (!has_capability('mod/forum:viewdiscussion', $context)) {
 105             continue;
 106         }
 107
 108         // fill two type array - order in modinfo is the same as in course
 109         if ($forum->type == 'news' or $forum->type == 'social') {
 110             $generalforums[$forum->id] = $forum;
 111
 112         } else if ($course->id == SITEID or empty($cm->sectionnum)) {
 113             $generalforums[$forum->id] = $forum;
 114
 115         } else {
 116             $learningforums[$forum->id] = $forum;
 117         }
 118     }
 119
 120     /// Do course wide subscribe/unsubscribe
 121     if (!is_null($subscribe) and !isguestuser() and !isguest()) {
 122         foreach ($modinfo->instances['forum'] as $forumid=>$cm) {
 123             $forum = $forums[$forumid];
 124             $cansub = false;
 125             if (has_capability('mod/forum:viewdiscussion', $cm)) {
 126                 $cansub = true;
 127             }
 128             if ($cansub && $cm->visible == 0 &&
 129                 !has_capability('mod/forum:managesubscriptions', $cm))
 130             {
 131                 $cansub = false;
 132             }
 133             if (!forum_is_forcesubscribed($forum)) {
 134                 $subscribed = forum_is_subscribed($USER->id, $forum);
 135                 if ($subscribe && !$subscribed && $cansub) {
 136                     forum_subscribe($USER->id, $forumid);
 137                 } else if (!$subscribe && $subscribed) {
 138                     forum_unsubscribe($USER->id, $forumid);
 139                 }
 140             }
 141         }
 142         $returnto = forum_go_back_to("index.php?id=$course->id");
 143         if ($subscribe) {
 144             add_to_log($course->id, 'forum', 'subscribeall', "index.php?id=$course->id", $course->id);
 145             redirect($returnto, get_string('nowallsubscribed', 'forum', format_string($course->shortname)), 1);
 146         } else {
 147             add_to_log($course->id, 'forum', 'unsubscribeall', "index.php?id=$course->id", $course->id);
 148             redirect($returnto, get_string('nowallunsubscribed', 'forum', format_string($course->shortname)), 1);
 149         }
 150     }
 151
 152     /// First, let's process the general forums and build up a display
 153
 154     $introoptions = new object();
 155     $introoptions->para = false;
 156
 157     if ($generalforums) {
 158         foreach ($generalforums as $forum) {
 159             $cm      = $modinfo->instances['forum'][$forum->id];
 160             $context = get_context_instance(CONTEXT_MODULE, $cm->id);
 161
 162             $count = forum_count_discussions($forum, $cm, $course);
 163
 164             if ($usetracking) {
 165                 if ($forum->trackingtype == FORUM_TRACKING_OFF) {
 166                     $unreadlink  = '-';
 167                     $trackedlink = '-';
 168
 169                 } else {
 170                     if (isset($untracked[$forum->id])) {
 171                             $unreadlink  = '-';
 172                     } else if ($unread = forum_tp_count_forum_unread_posts($cm, $course)) {
 173                             $unreadlink = '<span class="unread"><a href="view.php?f='.$forum->id.'">'.$unread.'</a>';
 174                         $unreadlink .= '<a title="'.$strmarkallread.'" href="markposts.php?f='.
 175                                        $forum->id.'&amp;mark=read"><img src="'.$CFG->pixpath.'/t/clear.gif" alt="'.$strmarkallread.'" /></a></span>';
 176                     } else {
 177                         $unreadlink = '<span class="read">0</span>';
 178                     }
 179
 180                     if ($forum->trackingtype == FORUM_TRACKING_ON) {
 181                         $trackedlink = $stryes;
 182
 183                     } else {
 184                         $options = array('id'=>$forum->id);
 185                         if (!isset($untracked[$forum->id])) {
 186                             $trackedlink = print_single_button($CFG->wwwroot.'/mod/forum/settracking.php', $options, $stryes, 'post', '_self', true, $strnotrackforum);
 187                         } else {
 188                             $trackedlink = print_single_button($CFG->wwwroot.'/mod/forum/settracking.php', $options, $strno, 'post', '_self', true, $strtrackforum);
 189                         }
 190                     }
 191                 }
 192             }
 193
 194             $forum->intro = shorten_text(trim(format_text($forum->intro, FORMAT_HTML, $introoptions)), $CFG->forum_shortpost);
 195             $forumname = format_string($forum->name, true);;
 196
 197             if ($cm->visible) {
 198                 $style = '';
 199             } else {
 200                 $style = 'class="dimmed"';
 201             }
 202             $forumlink = "<a href=\"view.php?f=$forum->id\" $style>".format_string($forum->name,true)."</a>";
 203             $discussionlink = "<a href=\"view.php?f=$forum->id\" $style>".$count."</a>";
 204
 205             $row = array ($forumlink, $forum->intro, $discussionlink);
 206             if ($usetracking) {
 207                 $row[] = $unreadlink;
 208                 $row[] = $trackedlink;    // Tracking.
 209             }
 210
 211             if ($can_subscribe) {
 212                 if ($forum->forcesubscribe != FORUM_DISALLOWSUBSCRIBE) {
 213                     $row[] = forum_get_subscribe_link($forum, $context, array('subscribed' => $stryes,
 214                             'unsubscribed' => $strno, 'forcesubscribed' => $stryes,
 215                             'cantsubscribe' => '-'), false, false, true, $subscribed_forums);
 216                 } else {
 217                     $row[] = '-';
 218                 }
 219             }
 220
 221             //If this forum has RSS activated, calculate it
 222             if ($show_rss) {
 223                 if ($forum->rsstype and $forum->rssarticles) {
 224                     //Calculate the tolltip text
 225                     if ($forum->rsstype == 1) {
 226                         $tooltiptext = get_string('rsssubscriberssdiscussions', 'forum', format_string($forum->name));
 227                     } else {
 228                         $tooltiptext = get_string('rsssubscriberssposts', 'forum', format_string($forum->name));
 229                     }
 230                     //Get html code for RSS link
 231                     $row[] = rss_get_link($course->id, $USER->id, 'forum', $forum->id, $tooltiptext);
 232                 } else {
 233                     $row[] = '&nbsp;';
 234                 }
 235             }
 236
 237             $generaltable->data[] = $row;
 238         }
 239     }
 240
 241
 242     // Start of the table for Learning Forums
 243     $learningtable->head  = array ($strforum, $strdescription, $strdiscussions);
 244     $learningtable->align = array ('left', 'left', 'center');
 245
 246     if ($usetracking) {
 247         $learningtable->head[] = $strunreadposts;
 248         $learningtable->align[] = 'center';
 249
 250         $learningtable->head[] = $strtracking;
 251         $learningtable->align[] = 'center';
 252     }
 253
 254     if ($can_subscribe) {
 255         $learningtable->head[] = $strsubscribed;
 256         $learningtable->align[] = 'center';
 257     }
 258
 259     if ($show_rss = (($can_subscribe || $course->id == SITEID) &&
 260                      isset($CFG->enablerssfeeds) && isset($CFG->forum_enablerssfeeds) &&
 261                      $CFG->enablerssfeeds && $CFG->forum_enablerssfeeds)) {
 262         $learningtable->head[] = $strrss;
 263         $learningtable->align[] = 'center';
 264     }
 265
 266     /// Now let's process the learning forums
 267
 268     if ($course->id != SITEID) {    // Only real courses have learning forums
 269         // Add extra field for section number, at the front
 270         if ($course->format == 'weeks' or $course->format == 'weekscss') {
 271             array_unshift($learningtable->head, $strweek);
 272         } else {
 273             array_unshift($learningtable->head, $strsection);
 274         }
 275         array_unshift($learningtable->align, 'center');
 276
 277
 278         if ($learningforums) {
 279             $currentsection = '';
 280                 foreach ($learningforums as $forum) {
 281                 $cm      = $modinfo->instances['forum'][$forum->id];
 282                 $context = get_context_instance(CONTEXT_MODULE, $cm->id);
 283
 284                 $count = forum_count_discussions($forum, $cm, $course);
 285
 286                 if ($usetracking) {
 287                     if ($forum->trackingtype == FORUM_TRACKING_OFF) {
 288                         $unreadlink  = '-';
 289                         $trackedlink = '-';
 290
 291                     } else {
 292                         if (isset($untracked[$forum->id])) {
 293                             $unreadlink  = '-';
 294                         } else if ($unread = forum_tp_count_forum_unread_posts($cm, $course)) {
 295                             $unreadlink = '<span class="unread"><a href="view.php?f='.$forum->id.'">'.$unread.'</a>';
 296                             $unreadlink .= '<a title="'.$strmarkallread.'" href="markposts.php?f='.
 297                                            $forum->id.'&amp;mark=read"><img src="'.$CFG->pixpath.'/t/clear.gif" alt="'.$strmarkallread.'" /></a></span>';
 298                         } else {
 299                             $unreadlink = '<span class="read">0</span>';
 300                         }
 301
 302                         if ($forum->trackingtype == FORUM_TRACKING_ON) {
 303                             $trackedlink = $stryes;
 304
 305                         } else {
 306                             $options = array('id'=>$forum->id);
 307                             if (!isset($untracked[$forum->id])) {
 308                                 $trackedlink = print_single_button($CFG->wwwroot.'/mod/forum/settracking.php', $options, $stryes, 'post', '_self', true, $strnotrackforum);
 309                             } else {
 310                                 $trackedlink = print_single_button($CFG->wwwroot.'/mod/forum/settracking.php', $options, $strno, 'post', '_self', true, $strtrackforum);
 311                             }
 312                         }
 313                     }
 314                 }
 315
 316                 $introoptions->para=false;
 317                 $forum->intro = shorten_text(trim(format_text($forum->intro, FORMAT_HTML, $introoptions)), $CFG->forum_shortpost);
 318
 319                 if ($cm->sectionnum != $currentsection) {
 320                     $printsection = $cm->sectionnum;
 321                     if ($currentsection) {
 322                         $learningtable->data[] = 'hr';
 323                     }
 324                     $currentsection = $cm->sectionnum;
 325                 } else {
 326                     $printsection = '';
 327                 }
 328
 329                 $forumname = format_string($forum->name,true);;
 330
 331                 if ($cm->visible) {
 332                     $style = '';
 333                 } else {
 334                     $style = 'class="dimmed"';
 335                 }
 336                 $forumlink = "<a href=\"view.php?f=$forum->id\" $style>".format_string($forum->name,true)."</a>";
 337                 $discussionlink = "<a href=\"view.php?f=$forum->id\" $style>".$count."</a>";
 338
 339                 $row = array ($printsection, $forumlink, $forum->intro, $discussionlink);
 340                 if ($usetracking) {
 341                     $row[] = $unreadlink;
 342                     $row[] = $trackedlink;    // Tracking.
 343                 }
 344
 345                 if ($can_subscribe) {
 346                     if ($forum->forcesubscribe != FORUM_DISALLOWSUBSCRIBE) {
 347                         $row[] = forum_get_subscribe_link($forum, $context, array('subscribed' => $stryes,
 348                             'unsubscribed' => $strno, 'forcesubscribed' => $stryes,
 349                             'cantsubscribe' => '-'), false, false, true, $subscribed_forums);
 350                     } else {
 351                         $row[] = '-';
 352                     }
 353                 }
 354
 355                 //If this forum has RSS activated, calculate it
 356                 if ($show_rss) {
 357                     if ($forum->rsstype and $forum->rssarticles) {
 358                         //Calculate the tolltip text
 359                         if ($forum->rsstype == 1) {
 360                             $tooltiptext = get_string('rsssubscriberssdiscussions', 'forum', format_string($forum->name));
 361                         } else {
 362                             $tooltiptext = get_string('rsssubscriberssposts', 'forum', format_string($forum->name));
 363                         }
 364                         //Get html code for RSS link
 365                         $row[] = rss_get_link($course->id, $USER->id, 'forum', $forum->id, $tooltiptext);
 366                     } else {
 367                         $row[] = '&nbsp;';
 368                     }
 369                 }
 370
 371                 $learningtable->data[] = $row;
 372             }
 373         }
 374     }
 375
 376
 377     /// Output the page
 378     $navlinks = array();
 379     $navlinks[] = array('name' => $strforums, 'link' => '', 'type' => 'activity');
 380
 381     print_header("$course->shortname: $strforums", $course->fullname,
 382                     build_navigation($navlinks),
 383                     "", "", true, $searchform, navmenu($course));
 384
 385     if (!isguest()) {
 386         print_box_start('subscription');
 387         echo '<span class="helplink">';
 388         echo '<a href="index.php?id='.$course->id.'&amp;subscribe=1">'.get_string('allsubscribe', 'forum').'</a>';
 389         echo '</span><br /><span class="helplink">';
 390         echo '<a href="index.php?id='.$course->id.'&amp;subscribe=0">'.get_string('allunsubscribe', 'forum').'</a>';
 391         echo '</span>';
 392         print_box_end();
 393         print_box('&nbsp;', 'clearer');
 394     }
 395
 396     if ($generalforums) {
 397         print_heading(get_string('generalforums', 'forum'));
 398         print_table($generaltable);
 399     }
 400
 401     if ($learningforums) {
 402         print_heading(get_string('learningforums', 'forum'));
 403         print_table($learningtable);
 404     }
 405
 406     print_footer($course);
 407
 408 ?>