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     $currentgroup = get_and_set_current_group($course, groupmode($course));
  22     $coursecontext = get_context_instance(CONTEXT_COURSE, $course->id);
  23
  24
  25     unset($SESSION->fromdiscussion);
  26
  27     add_to_log($course->id, "forum", "view forums", "index.php?id=$course->id");
  28
  29     $strforums = get_string("forums", "forum");
  30     $strforum = get_string("forum", "forum");
  31     $strdescription = get_string("description");
  32     $strdiscussions = get_string("discussions", "forum");
  33     $strsubscribed = get_string("subscribed", "forum");
  34     $strunreadposts = get_string("unreadposts", "forum");
  35     $strtracking = get_string('tracking', 'forum');
  36     $strmarkallread = get_string('markallread', 'forum');
  37     $strtrackforum = get_string('trackforum', 'forum');
  38     $strnotrackforum = get_string('notrackforum', 'forum');
  39     $strsubscribe = get_string('subscribe', 'forum');
  40     $strunsubscribe = get_string('unsubscribe', 'forum');
  41     $stryes = get_string('yes');
  42     $strno = get_string('no');
  43     $strrss = get_string("rss");
  44     $strweek = get_string('week');
  45     $strsection = get_string('section');
  46
  47     $searchform = forum_search_form($course);
  48
  49
  50     // Start of the table for General Forums
  51
  52     $generaltable->head  = array ($strforum, $strdescription, $strdiscussions);
  53     $generaltable->align = array ('left', 'left', 'center');
  54
  55     if ($usetracking = forum_tp_can_track_forums()) {
  56         $untracked = forum_tp_get_untracked_forums($USER->id, $course->id);
  57
  58         $generaltable->head[] = $strunreadposts;
  59         $generaltable->align[] = 'center';
  60
  61         $generaltable->head[] = $strtracking;
  62         $generaltable->align[] = 'center';
  63     }
  64
  65     if ($can_subscribe = has_capability('moodle/course:view', $coursecontext)) {
  66         $generaltable->head[] = $strsubscribed;
  67         $generaltable->align[] = 'center';
  68     }
  69
  70     if ($show_rss = (($can_subscribe || $course->id == SITEID) &&
  71                      isset($CFG->enablerssfeeds) && isset($CFG->forum_enablerssfeeds) &&
  72                      $CFG->enablerssfeeds && $CFG->forum_enablerssfeeds)) {
  73         $generaltable->head[] = $strrss;
  74         $generaltable->align[] = 'center';
  75     }
  76
  77
  78     // Parse and organise all the forums.  Most forums are course modules but
  79     // some special ones are not.  These get placed in the general forums
  80     // category with the forums in section 0.
  81
  82     $generalforums = array();            // For now
  83     $learningforums = get_all_instances_in_course("forum", $course);
  84
  85     if ($forums = get_records("forum", "course", $id, "name ASC")) {  // All known forums
  86
  87         if ($learningforums) {           // Copy "full" data into this complete array
  88             foreach ($learningforums as $key => $learningforum) {
  89                 $learningforum->keyreference = $key;
  90                 $forums[$learningforum->id] = $learningforum;
  91             }
  92         }
  93
  94         foreach ($forums as $forum) {
  95
  96             $cm = get_coursemodule_from_instance("forum", $forum->id, $course->id);
  97             $context = get_context_instance(CONTEXT_MODULE, $cm->id);
  98
  99             if (!has_capability('mod/forum:viewdiscussion', $context)) {
 100                 if (isset($forum->keyreference)) {
 101                     unset($learningforums[$forum->keyreference]);
 102                 }
 103                 continue;
 104             }
 105             if (!isset($forum->visible)) {
 106                 $forum->visible = instance_is_visible("forum", $forum);
 107                 if (!$forum->visible and !has_capability('moodle/course:viewhiddenactivities', $context)) {
 108                     if (isset($forum->keyreference)) {
 109                         unset($learningforums[$forum->keyreference]);
 110                     }
 111                     continue;
 112                 }
 113             }
 114             switch ($forum->type) {
 115                 case "news":
 116                 case "social":
 117                     $generalforums[] = $forum;
 118                     if (isset($forum->keyreference)) {   // Should always be
 119                         unset($learningforums[$forum->keyreference]);
 120                     }
 121                     break;
 122                 default:
 123                     if (($course->id == SITEID) or empty($forum->section)) {   // Site level or section 0
 124                         $generalforums[] = $forum;
 125                         if (isset($forum->keyreference)) {
 126                             unset($learningforums[$forum->keyreference]);
 127                         }
 128                     }
 129                     break;
 130             }
 131         }
 132     }
 133
 134     /// Do course wide subscribe/unsubscribe
 135     if (!is_null($subscribe) && !isguest()) {
 136         $allforums = array_merge($generalforums, $learningforums);
 137         if ($allforums) {
 138             foreach ($allforums as $forum) {
 139                 if (!forum_is_forcesubscribed($forum->id)) {
 140                     $subscribed = forum_is_subscribed($USER->id, $forum->id);
 141                     if ($subscribe && !$subscribed) {
 142                         forum_subscribe($USER->id, $forum->id);
 143                     } elseif (!$subscribe && $subscribed) {
 144                         forum_unsubscribe($USER->id, $forum->id);
 145                     }
 146                 }
 147             }
 148         }
 149         $returnto = forum_go_back_to("index.php?id=$course->id");
 150         if ($subscribe) {
 151             add_to_log($course->id, "forum", "subscribeall", "index.php?id=$course->id", $course->id);
 152             redirect($returnto, get_string("nowallsubscribed", "forum", format_string($course->shortname)), 1);
 153         } else {
 154             add_to_log($course->id, "forum", "unsubscribeall", "index.php?id=$course->id", $course->id);
 155             redirect($returnto, get_string("nowallunsubscribed", "forum", format_string($course->shortname)), 1);
 156         }
 157     }
 158
 159     /// First, let's process the general forums and build up a display
 160
 161     if ($generalforums) {
 162         foreach ($generalforums as $forum) {
 163
 164             $cm = get_coursemodule_from_instance("forum", $forum->id, $course->id);
 165             $context = get_context_instance(CONTEXT_MODULE, $cm->id);
 166
 167             if (isset($forum->groupmode)) {
 168                 $groupmode = groupmode($course, $forum);  /// Can do this because forum->groupmode is defined
 169             } else {
 170                 $groupmode = NOGROUPS;
 171             }
 172
 173             $cantaccessagroup = $groupmode and !has_capability('moodle/site:accessallgroups', $context) and !mygroupid($course->id);
 174
 175             // this is potentially wrong logic. could possibly check for if user has the right to hmmm
 176             if ($groupmode == SEPARATEGROUPS and !has_capability('moodle/site:accessallgroups', $context)) {
 177                 $count = count_records_select("forum_discussions", "forum = '$forum->id' AND (groupid = '$currentgroup' OR groupid = '-1')");
 178             } else {
 179                 $count = count_records("forum_discussions", "forum", "$forum->id");
 180             }
 181
 182             if ($usetracking) {
 183                 if (($forum->trackingtype == FORUM_TRACKING_ON) || !isset($untracked[$forum->id])) {
 184                     $groupid = ($groupmode==SEPARATEGROUPS && !has_capability('moodle/site:accessallgroups', $context)) ? $currentgroup : false;
 185                     $unread = forum_tp_count_forum_unread_posts($USER->id, $forum->id, $groupid);
 186                     if ($unread > 0) {
 187                         $unreadlink = '<span class="unread"><a href="view.php?f='.$forum->id.'">'.$unread.'</a>';
 188                         $unreadlink .= '<a title="'.$strmarkallread.'" href="markposts.php?f='.
 189                                        $forum->id.'&amp;mark=read"><img src="'.$CFG->pixpath.'/t/clear.gif" alt="'.$strmarkallread.'" /></a></span>';
 190                     } else {
 191                         $unreadlink = '<span class="read"><a href="view.php?f='.$forum->id.'">'.$unread.'</a></span>';
 192                     }
 193
 194
 195                     if ($forum->trackingtype == FORUM_TRACKING_OPTIONAL) {
 196                         $trackedlink = '<a title="'.$strnotrackforum.'" href="settracking.php?id='.
 197                                        $forum->id.'">'.$stryes.'</a>';
 198                     }
 199                     else {
 200                         $trackedlink = $stryes;
 201                     }
 202                 } else {
 203                     $unreadlink = '-';
 204                     $trackedlink = '<a title="'.$strtrackforum.'" href="settracking.php?id='.
 205                                    $forum->id.'">'.$strno.'</a>';
 206                 }
 207             }
 208
 209             $introoptions->para=false;
 210             $forum->intro = shorten_text(trim(format_text($forum->intro, FORMAT_HTML, $introoptions)), $CFG->forum_shortpost);
 211
 212             $forumname = format_string($forum->name,true);;
 213             if ($cantaccessagroup) {
 214                 $forumlink = $forumname;
 215                 $discussionlink = $count;
 216             } else {
 217                 if ($forum->visible) {
 218                     $style = '';
 219                 } else {
 220                     $style = 'class="dimmed"';
 221                 }
 222                 $forumlink = "<a href=\"view.php?f=$forum->id\" $style>".format_string($forum->name,true)."</a>";
 223                 $discussionlink = "<a href=\"view.php?f=$forum->id\" $style>".$count."</a>";
 224             }
 225
 226             $row = array ($forumlink, $forum->intro, $discussionlink);
 227             if ($usetracking) {
 228                 $row[] = $unreadlink;
 229                 $row[] = $trackedlink;    // Tracking.
 230             }
 231
 232             if ($can_subscribe) {
 233                 $row[] = forum_get_subscribe_link($forum, $context, array('subscribed' => $stryes,
 234                         'unsubscribed' => $strno, 'forcesubscribed' => $stryes,
 235                         'cantsubscribe' => '-'), $cantaccessagroup);
 236             }
 237
 238             //If this forum has RSS activated, calculate it
 239             if ($show_rss and $forum->rsstype and $forum->rssarticles) {
 240                 //Calculate the tolltip text
 241                 if ($forum->rsstype == 1) {
 242                     $tooltiptext = get_string("rsssubscriberssdiscussions","forum",format_string($forum->name));
 243                 } else {
 244                     $tooltiptext = get_string("rsssubscriberssposts","forum",format_string($forum->name));
 245                 }
 246                 if (empty($USER->id)) {
 247                     $userid = 0;
 248                 } else {
 249                     $userid = $USER->id;
 250                 }
 251                 //Get html code for RSS link
 252                 $row[] = rss_get_link($course->id, $userid, "forum", $forum->id, $tooltiptext);
 253             }
 254
 255             $generaltable->data[] = $row;
 256         }
 257     }
 258
 259
 260     // Start of the table for Learning Forums
 261     $learningtable->head  = array ($strforum, $strdescription, $strdiscussions);
 262     $learningtable->align = array ("left", "left", "center");
 263
 264     if ($usetracking) {
 265         $learningtable->head[] = $strunreadposts;
 266         $learningtable->align[] = 'center';
 267
 268         $learningtable->head[] = $strtracking;
 269         $learningtable->align[] = 'center';
 270     }
 271
 272     if ($can_subscribe) {
 273         $learningtable->head[] = $strsubscribed;
 274         $learningtable->align[] = 'center';
 275     }
 276
 277     if ($show_rss = (($can_subscribe || $course->id == SITEID) &&
 278                      isset($CFG->enablerssfeeds) && isset($CFG->forum_enablerssfeeds) &&
 279                      $CFG->enablerssfeeds && $CFG->forum_enablerssfeeds)) {
 280         $learningtable->head[] = $strrss;
 281         $learningtable->align[] = 'center';
 282     }
 283
 284     /// Now let's process the learning forums
 285
 286     if ($course->id != SITEID) {    // Only real courses have learning forums
 287         // Add extra field for section number, at the front
 288         if ($course->format == 'weeks' or $course->format == 'weekscss') {
 289             array_unshift($learningtable->head, $strweek);
 290         } else {
 291             array_unshift($learningtable->head, $strsection);
 292         }
 293         array_unshift($learningtable->align, "center");
 294
 295
 296         if ($learningforums) {
 297             $currentsection = "";
 298             foreach ($learningforums as $key => $forum) {
 299                 $groupmode = groupmode($course, $forum);  /// Can do this because forum->groupmode is defined
 300                 $forum->visible = instance_is_visible("forum", $forum)
 301                                     || has_capability('moodle/course:view', $coursecontext);
 302
 303                 $cm = get_coursemodule_from_instance("forum", $forum->id, $course->id);
 304                 $context = get_context_instance(CONTEXT_MODULE, $cm->id);
 305
 306                 $cantaccessagroup = $groupmode and !has_capability('moodle/site:accessallgroups', $context) and !mygroupid($course->id);
 307
 308                 if ($groupmode == SEPARATEGROUPS and !has_capability('moodle/site:accessallgroups', $context)) {
 309                     $count = count_records("forum_discussions", "forum", "$forum->id", "groupid", $currentgroup);
 310                 } else {
 311                     $count = count_records("forum_discussions", "forum", "$forum->id");
 312                 }
 313
 314                 if ($usetracking) {
 315                     if (($forum->trackingtype == FORUM_TRACKING_ON) ||
 316                         !isset($untracked[$forum->id])) {
 317                         $groupid = ($groupmode==SEPARATEGROUPS
 318                                     && !has_capability('moodle/site:accessallgroups', $context))
 319                                     ? $currentgroup : false;
 320                         $unread = forum_tp_count_forum_unread_posts($USER->id, $forum->id, $groupid);
 321                         if ($unread > 0) {
 322                             $unreadlink = '<span class="unread"><a href="view.php?f='.$forum->id.'">'.$unread.'</a>';
 323                             $unreadlink .= '<a title="'.$strmarkallread.'" href="markposts.php?f='.
 324                                            $forum->id.'&amp;mark=read"><img src="'.$CFG->pixpath.'/t/clear.gif" alt="'.$strmarkallread.'" /></a></span>';
 325                         } else {
 326                             $unreadlink = '<span class="read"><a href="view.php?f='.$forum->id.'">'.$unread.'</a></span>';
 327                         }
 328                         if ($forum->trackingtype == FORUM_TRACKING_OPTIONAL) {
 329                             $trackedlink = '<a title="'.$strnotrackforum.'" href="settracking.php?id='.
 330                                            $forum->id.'">'.$stryes.'</a>';
 331                         }
 332                     } else {
 333                         $unreadlink = '-';
 334                         $trackedlink = '<a title="'.$strtrackforum.'" href="settracking.php?id='.$forum->id.'">'.$strno.'</a>';
 335                     }
 336                 }
 337
 338                 $introoptions->para=false;
 339                 $forum->intro = shorten_text(trim(format_text($forum->intro, FORMAT_HTML, $introoptions)), $CFG->forum_shortpost);
 340
 341                 if ($forum->section != $currentsection) {
 342                     $printsection = $forum->section;
 343                     if ($currentsection) {
 344                         $learningtable->data[] = 'hr';
 345                     }
 346                     $currentsection = $forum->section;
 347                 } else {
 348                     $printsection = "";
 349                 }
 350
 351                 $forumname = format_string($forum->name,true);;
 352                 if ($cantaccessagroup && $groupmode == SEPARATEGROUPS) {
 353                     $forumlink = $forumname;
 354                     $discussionlink = $count;
 355                 } else {
 356                     if ($forum->visible) {
 357                         $style = '';
 358                     } else {
 359                         $style = 'class="dimmed"';
 360                     }
 361                     $forumlink = "<a href=\"view.php?f=$forum->id\" $style>".format_string($forum->name,true)."</a>";
 362                     $discussionlink = "<a href=\"view.php?f=$forum->id\" $style>".$count."</a>";
 363                 }
 364
 365                 $row = array ($printsection, $forumlink, $forum->intro, $discussionlink);
 366                 if ($usetracking) {
 367                     $row[] = $unreadlink;
 368                     $row[] = $trackedlink;    // Tracking.
 369                 }
 370
 371                 if ($can_subscribe) {
 372                     $row[] = forum_get_subscribe_link($forum, $context, array('subscribed' => $stryes,
 373                         'unsubscribed' => $strno, 'forcesubscribed' => $stryes,
 374                         'cantsubscribe' => '-'), $cantaccessagroup);
 375                 }
 376
 377                 //If this forum has RSS activated, calculate it
 378                 if ($show_rss and $forum->rsstype and $forum->rssarticles) {
 379                     //Calculate the tolltip text
 380                     if ($forum->rsstype == 1) {
 381                         $tooltiptext = get_string("rsssubscriberssdiscussions","forum",format_string($forum->name));
 382                     } else {
 383                         $tooltiptext = get_string("rsssubscriberssposts","forum",format_string($forum->name));
 384                     }
 385                     if (empty($USER->id)) {
 386                         $userid = 0;
 387                     } else {
 388                         $userid = $USER->id;
 389                     }
 390                     //Get html code for RSS link
 391                     $row[] = rss_get_link($course->id, $userid, "forum", $forum->id, $tooltiptext);
 392                 }
 393
 394                 $learningtable->data[] = $row;
 395             }
 396         }
 397     }
 398
 399
 400     /// Output the page
 401     $navlinks = array();
 402     $navlinks[] = array('name' => $strforums, 'link' => '', 'type' => 'activity');
 403
 404     print_header("$course->shortname: $strforums", $course->fullname,
 405                     build_navigation($navlinks),
 406                     "", "", true, $searchform, navmenu($course));
 407
 408     if (!isguest()) {
 409         print_box_start('subscription');
 410         echo '<span class="helplink">';
 411         echo '<a href="index.php?id='.$course->id.'&amp;subscribe=1">'.get_string('allsubscribe', 'forum').'</a>';
 412         echo '</span><br /><span class="helplink">';
 413         echo '<a href="index.php?id='.$course->id.'&amp;subscribe=0">'.get_string('allunsubscribe', 'forum').'</a>';
 414         echo '</span>';
 415         print_box_end();
 416         print_box('&nbsp;', 'clearer');
 417     }
 418
 419     if ($generalforums) {
 420         print_heading(get_string("generalforums", "forum"));
 421         print_table($generaltable);
 422     }
 423
 424     if ($learningforums) {
 425         print_heading(get_string("learningforums", "forum"));
 426         print_table($learningtable);
 427     }
 428
 429     print_footer($course);
 430
 431 ?>