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         $generaltable->align[] = 'center';
  62     }
  63
  64     if ($can_subscribe = has_capability('moodle/course:view', $coursecontext)) {
  65         $generaltable->head[] = $strsubscribed;
  66         $generaltable->align[] = 'center';
  67     }
  68
  69     if ($show_rss = (($can_subscribe || $course->id == SITEID) &&
  70                      isset($CFG->enablerssfeeds) && isset($CFG->forum_enablerssfeeds) &&
  71                      $CFG->enablerssfeeds && $CFG->forum_enablerssfeeds)) {
  72         $generaltable->head[] = $strrss;
  73         $generaltable->align[] = 'center';
  74     }
  75
  76
  77     // Parse and organise all the forums.  Most forums are course modules but
  78     // some special ones are not.  These get placed in the general forums
  79     // category with the forums in section 0.
  80
  81     $generalforums = array();            // For now
  82     $learningforums = get_all_instances_in_course("forum", $course);
  83
  84     if ($forums = get_records("forum", "course", $id, "name ASC")) {  // All known forums
  85
  86         if ($learningforums) {           // Copy "full" data into this complete array
  87             foreach ($learningforums as $key => $learningforum) {
  88                 $learningforum->keyreference = $key;
  89                 $forums[$learningforum->id] = $learningforum;
  90             }
  91         }
  92
  93         foreach ($forums as $forum) {
  94
  95             $cm = get_coursemodule_from_instance("forum", $forum->id, $course->id);
  96             $context = get_context_instance(CONTEXT_MODULE, $cm->id);
  97
  98             if (!has_capability('mod/forum:viewdiscussion', $context)) {
  99                 if (isset($forum->keyreference)) {
 100                     unset($learningforums[$forum->keyreference]);
 101                 }
 102                 continue;
 103             }
 104             if (!isset($forum->visible)) {
 105                 $forum->visible = instance_is_visible("forum", $forum);
 106                 if (!$forum->visible and !has_capability('moodle/course:viewhiddenactivities', $context)) {
 107                     if (isset($forum->keyreference)) {
 108                         unset($learningforums[$forum->keyreference]);
 109                     }
 110                     continue;
 111                 }
 112             }
 113             switch ($forum->type) {
 114                 case "news":
 115                 case "social":
 116                     $generalforums[] = $forum;
 117                     if (isset($forum->keyreference)) {   // Should always be
 118                         unset($learningforums[$forum->keyreference]);
 119                     }
 120                     break;
 121                 default:
 122                     if (($course->id == SITEID) or empty($forum->section)) {   // Site level or section 0
 123                         $generalforums[] = $forum;
 124                         if (isset($forum->keyreference)) {
 125                             unset($learningforums[$forum->keyreference]);
 126                         }
 127                     }
 128                     break;
 129             }
 130         }
 131     }
 132
 133     /// Do course wide subscribe/unsubscribe
 134     if (!is_null($subscribe) && !isguest()) {
 135         $allforums = array_merge($generalforums, $learningforums);
 136         if ($allforums) {
 137             foreach ($allforums as $forum) {
 138                 if (!forum_is_forcesubscribed($forum->id)) {
 139                     $subscribed = forum_is_subscribed($USER->id, $forum->id);
 140                     if ($subscribe && !$subscribed) {
 141                         forum_subscribe($USER->id, $forum->id);
 142                     } elseif (!$subscribe && $subscribed) {
 143                         forum_unsubscribe($USER->id, $forum->id);
 144                     }
 145                 }
 146             }
 147         }
 148         $returnto = forum_go_back_to("index.php?id=$course->id");
 149         if ($subscribe) {
 150             add_to_log($course->id, "forum", "subscribeall", "index.php?id=$course->id", $course->id);
 151             redirect($returnto, get_string("nowallsubscribed", "forum", format_string($course->shortname)), 1);
 152         } else {
 153             add_to_log($course->id, "forum", "unsubscribeall", "index.php?id=$course->id", $course->id);
 154             redirect($returnto, get_string("nowallunsubscribed", "forum", format_string($course->shortname)), 1);
 155         }
 156     }
 157
 158     /// First, let's process the general forums and build up a display
 159
 160     if ($generalforums) {
 161         foreach ($generalforums as $forum) {
 162
 163             $cm = get_coursemodule_from_instance("forum", $forum->id, $course->id);
 164             $context = get_context_instance(CONTEXT_MODULE, $cm->id);
 165
 166             if (!groups_course_module_visible($cm)) {
 167                 continue;
 168             }
 169             if (isset($forum->groupmode)) {
 170                 $groupmode = groups_get_activity_groupmode($cm);
 171             } else {
 172                 $groupmode = NOGROUPS;
 173             }
 174             $currentgroup = groups_get_activity_group($cm);
 175             $cantaccessagroup = $groupmode and !has_capability('moodle/site:accessallgroups', $context) and !mygroupid($course->id);
 176
 177             // this is potentially wrong logic. could possibly check for if user has the right to hmmm
 178             if ($groupmode == SEPARATEGROUPS and !has_capability('moodle/site:accessallgroups', $context)) {
 179                 $count = count_records_select("forum_discussions", "forum = '$forum->id' AND (groupid = '$currentgroup' OR groupid = '-1')");
 180             } else {
 181                 $count = count_records("forum_discussions", "forum", "$forum->id");
 182             }
 183
 184             if ($usetracking) {
 185                 if (($forum->trackingtype == FORUM_TRACKING_ON) || !isset($untracked[$forum->id])) {
 186                     $groupid = ($groupmode==SEPARATEGROUPS && !has_capability('moodle/site:accessallgroups', $context)) ? $currentgroup : false;
 187                     $unread = forum_tp_count_forum_unread_posts($USER->id, $forum->id, $groupid);
 188                     if ($unread > 0) {
 189                         $unreadlink = '<span class="unread"><a href="view.php?f='.$forum->id.'">'.$unread.'</a>';
 190                         $unreadlink .= '<a title="'.$strmarkallread.'" href="markposts.php?f='.
 191                                        $forum->id.'&amp;mark=read"><img src="'.$CFG->pixpath.'/t/clear.gif" alt="'.$strmarkallread.'" /></a></span>';
 192                     } else {
 193                         $unreadlink = '<span class="read"><a href="view.php?f='.$forum->id.'">'.$unread.'</a></span>';
 194                     }
 195
 196
 197                     if ($forum->trackingtype == FORUM_TRACKING_OPTIONAL) {
 198                         $trackedlink = '<a title="'.$strnotrackforum.'" href="settracking.php?id='.
 199                                        $forum->id.'">'.$stryes.'</a>';
 200                     }
 201                     else {
 202                         $trackedlink = $stryes;
 203                     }
 204                 } else {
 205                     $unreadlink = '-';
 206                     $trackedlink = '<a title="'.$strtrackforum.'" href="settracking.php?id='.
 207                                    $forum->id.'">'.$strno.'</a>';
 208                 }
 209             }
 210
 211             $introoptions->para=false;
 212             $forum->intro = shorten_text(trim(format_text($forum->intro, FORMAT_HTML, $introoptions)), $CFG->forum_shortpost);
 213
 214             $forumname = format_string($forum->name,true);;
 215             if ($cantaccessagroup) {
 216                 $forumlink = $forumname;
 217                 $discussionlink = $count;
 218             } else {
 219                 if ($forum->visible) {
 220                     $style = '';
 221                 } else {
 222                     $style = 'class="dimmed"';
 223                 }
 224                 $forumlink = "<a href=\"view.php?f=$forum->id\" $style>".format_string($forum->name,true)."</a>";
 225                 $discussionlink = "<a href=\"view.php?f=$forum->id\" $style>".$count."</a>";
 226             }
 227
 228             $row = array ($forumlink, $forum->intro, $discussionlink);
 229             if ($usetracking) {
 230                 $row[] = $unreadlink;
 231                 $row[] = $trackedlink;    // Tracking.
 232             }
 233
 234             if ($can_subscribe) {
 235                 $row[] = forum_get_subscribe_link($forum, $context, array('subscribed' => $stryes,
 236                         'unsubscribed' => $strno, 'forcesubscribed' => $stryes,
 237                         'cantsubscribe' => '-'), $cantaccessagroup);
 238             }
 239
 240             //If this forum has RSS activated, calculate it
 241             if ($show_rss and $forum->rsstype and $forum->rssarticles) {
 242                 //Calculate the tolltip text
 243                 if ($forum->rsstype == 1) {
 244                     $tooltiptext = get_string("rsssubscriberssdiscussions","forum",format_string($forum->name));
 245                 } else {
 246                     $tooltiptext = get_string("rsssubscriberssposts","forum",format_string($forum->name));
 247                 }
 248                 if (empty($USER->id)) {
 249                     $userid = 0;
 250                 } else {
 251                     $userid = $USER->id;
 252                 }
 253                 //Get html code for RSS link
 254                 $row[] = rss_get_link($course->id, $userid, "forum", $forum->id, $tooltiptext);
 255             }
 256
 257             $generaltable->data[] = $row;
 258         }
 259     }
 260
 261
 262     // Start of the table for Learning Forums
 263     $learningtable->head  = array ($strforum, $strdescription, $strdiscussions);
 264     $learningtable->align = array ("left", "left", "center");
 265
 266     if ($usetracking) {
 267         $learningtable->head[] = $strunreadposts;
 268         $learningtable->align[] = 'center';
 269
 270         $learningtable->head[] = $strtracking;
 271         $learningtable->align[] = 'center';
 272     }
 273
 274     if ($can_subscribe) {
 275         $learningtable->head[] = $strsubscribed;
 276         $learningtable->align[] = 'center';
 277     }
 278
 279     if ($show_rss = (($can_subscribe || $course->id == SITEID) &&
 280                      isset($CFG->enablerssfeeds) && isset($CFG->forum_enablerssfeeds) &&
 281                      $CFG->enablerssfeeds && $CFG->forum_enablerssfeeds)) {
 282         $learningtable->head[] = $strrss;
 283         $learningtable->align[] = 'center';
 284     }
 285
 286     /// Now let's process the learning forums
 287
 288     if ($course->id != SITEID) {    // Only real courses have learning forums
 289         // Add extra field for section number, at the front
 290         if ($course->format == 'weeks' or $course->format == 'weekscss') {
 291             array_unshift($learningtable->head, $strweek);
 292         } else {
 293             array_unshift($learningtable->head, $strsection);
 294         }
 295         array_unshift($learningtable->align, "center");
 296
 297
 298         if ($learningforums) {
 299             $currentsection = "";
 300             foreach ($learningforums as $key => $forum) {
 301                 $forum->visible = instance_is_visible("forum", $forum)
 302                                     || has_capability('moodle/course:view', $coursecontext);
 303
 304                 $cm = get_coursemodule_from_instance("forum", $forum->id, $course->id);
 305                 $context = get_context_instance(CONTEXT_MODULE, $cm->id);
 306
 307                 if (!groups_course_module_visible($cm)) {
 308                     continue;
 309                 }
 310                 $currentgroup = groups_get_activity_group($cm);
 311                 $groupmode = groups_get_activity_groupmode($cm);
 312
 313
 314                 $cantaccessagroup = $groupmode and !has_capability('moodle/site:accessallgroups', $context) and !mygroupid($course->id);
 315
 316                 if ($groupmode == SEPARATEGROUPS and !has_capability('moodle/site:accessallgroups', $context)) {
 317                     $count = count_records("forum_discussions", "forum", "$forum->id", "groupid", $currentgroup);
 318                 } else {
 319                     $count = count_records("forum_discussions", "forum", "$forum->id");
 320                 }
 321
 322                 if ($usetracking) {
 323                     if (($forum->trackingtype == FORUM_TRACKING_ON) ||
 324                         !isset($untracked[$forum->id])) {
 325                         $groupid = ($groupmode==SEPARATEGROUPS
 326                                     && !has_capability('moodle/site:accessallgroups', $context))
 327                                     ? $currentgroup : false;
 328                         $unread = forum_tp_count_forum_unread_posts($USER->id, $forum->id, $groupid);
 329                         if ($unread > 0) {
 330                             $unreadlink = '<span class="unread"><a href="view.php?f='.$forum->id.'">'.$unread.'</a>';
 331                             $unreadlink .= '<a title="'.$strmarkallread.'" href="markposts.php?f='.
 332                                            $forum->id.'&amp;mark=read"><img src="'.$CFG->pixpath.'/t/clear.gif" alt="'.$strmarkallread.'" /></a></span>';
 333                         } else {
 334                             $unreadlink = '<span class="read"><a href="view.php?f='.$forum->id.'">'.$unread.'</a></span>';
 335                         }
 336                         if ($forum->trackingtype == FORUM_TRACKING_OPTIONAL) {
 337                             $trackedlink = '<a title="'.$strnotrackforum.'" href="settracking.php?id='.
 338                                            $forum->id.'">'.$stryes.'</a>';
 339                         }
 340                     } else {
 341                         $unreadlink = '-';
 342                         $trackedlink = '<a title="'.$strtrackforum.'" href="settracking.php?id='.$forum->id.'">'.$strno.'</a>';
 343                     }
 344                 }
 345
 346                 $introoptions->para=false;
 347                 $forum->intro = shorten_text(trim(format_text($forum->intro, FORMAT_HTML, $introoptions)), $CFG->forum_shortpost);
 348
 349                 if ($forum->section != $currentsection) {
 350                     $printsection = $forum->section;
 351                     if ($currentsection) {
 352                         $learningtable->data[] = 'hr';
 353                     }
 354                     $currentsection = $forum->section;
 355                 } else {
 356                     $printsection = "";
 357                 }
 358
 359                 $forumname = format_string($forum->name,true);;
 360                 if ($cantaccessagroup && $groupmode == SEPARATEGROUPS) {
 361                     $forumlink = $forumname;
 362                     $discussionlink = $count;
 363                 } else {
 364                     if ($forum->visible) {
 365                         $style = '';
 366                     } else {
 367                         $style = 'class="dimmed"';
 368                     }
 369                     $forumlink = "<a href=\"view.php?f=$forum->id\" $style>".format_string($forum->name,true)."</a>";
 370                     $discussionlink = "<a href=\"view.php?f=$forum->id\" $style>".$count."</a>";
 371                 }
 372
 373                 $row = array ($printsection, $forumlink, $forum->intro, $discussionlink);
 374                 if ($usetracking) {
 375                     $row[] = $unreadlink;
 376                     $row[] = $trackedlink;    // Tracking.
 377                 }
 378
 379                 if ($can_subscribe) {
 380                     $row[] = forum_get_subscribe_link($forum, $context, array('subscribed' => $stryes,
 381                         'unsubscribed' => $strno, 'forcesubscribed' => $stryes,
 382                         'cantsubscribe' => '-'), $cantaccessagroup);
 383                 }
 384
 385                 //If this forum has RSS activated, calculate it
 386                 if ($show_rss and $forum->rsstype and $forum->rssarticles) {
 387                     //Calculate the tolltip text
 388                     if ($forum->rsstype == 1) {
 389                         $tooltiptext = get_string("rsssubscriberssdiscussions","forum",format_string($forum->name));
 390                     } else {
 391                         $tooltiptext = get_string("rsssubscriberssposts","forum",format_string($forum->name));
 392                     }
 393                     if (empty($USER->id)) {
 394                         $userid = 0;
 395                     } else {
 396                         $userid = $USER->id;
 397                     }
 398                     //Get html code for RSS link
 399                     $row[] = rss_get_link($course->id, $userid, "forum", $forum->id, $tooltiptext);
 400                 }
 401
 402                 $learningtable->data[] = $row;
 403             }
 404         }
 405     }
 406
 407
 408     /// Output the page
 409     $navlinks = array();
 410     $navlinks[] = array('name' => $strforums, 'link' => '', 'type' => 'activity');
 411
 412     print_header("$course->shortname: $strforums", $course->fullname,
 413                     build_navigation($navlinks),
 414                     "", "", true, $searchform, navmenu($course));
 415
 416     if (!isguest()) {
 417         print_box_start('subscription');
 418         echo '<span class="helplink">';
 419         echo '<a href="index.php?id='.$course->id.'&amp;subscribe=1">'.get_string('allsubscribe', 'forum').'</a>';
 420         echo '</span><br /><span class="helplink">';
 421         echo '<a href="index.php?id='.$course->id.'&amp;subscribe=0">'.get_string('allunsubscribe', 'forum').'</a>';
 422         echo '</span>';
 423         print_box_end();
 424         print_box('&nbsp;', 'clearer');
 425     }
 426
 427     if ($generalforums) {
 428         print_heading(get_string("generalforums", "forum"));
 429         print_table($generaltable);
 430     }
 431
 432     if ($learningforums) {
 433         print_heading(get_string("learningforums", "forum"));
 434         print_table($learningtable);
 435     }
 436
 437     print_footer($course);
 438
 439 ?>