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     $currentgroup = get_current_group($course->id);
  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                 $groupmode = NOGROUPS;
 171             }
 172
 173
 174             // this is potentially wrong logic. could possibly check for if user has the right to hmmm
 175             if ($groupmode == SEPARATEGROUPS and !has_capability('moodle/site:accessallgroups', $context)) {
 176                 $count = count_records_select("forum_discussions", "forum = '$forum->id' AND (groupid = '$currentgroup' OR groupid = '-1')");
 177             } else {
 178                 $count = count_records("forum_discussions", "forum", "$forum->id");
 179             }
 180
 181             if ($usetracking) {
 182                 if (($forum->trackingtype == FORUM_TRACKING_ON) || !isset($untracked[$forum->id])) {
 183                     $groupid = ($groupmode==SEPARATEGROUPS && !has_capability('moodle/site:accessallgroups', $context)) ? $currentgroup : false;
 184                     $unread = forum_tp_count_forum_unread_posts($USER->id, $forum->id, $groupid);
 185                     if ($unread > 0) {
 186                         $unreadlink = '<span class="unread"><a href="view.php?f='.$forum->id.'">'.$unread.'</a>';
 187                         $unreadlink .= '<a title="'.$strmarkallread.'" href="markposts.php?f='.
 188                                        $forum->id.'&amp;mark=read"><img src="'.$CFG->pixpath.'/t/clear.gif" alt="'.$strmarkallread.'" /></a></span>';
 189                     } else {
 190                         $unreadlink = '<span class="read"><a href="view.php?f='.$forum->id.'">'.$unread.'</a></span>';
 191                     }
 192
 193
 194                     if ($forum->trackingtype == FORUM_TRACKING_OPTIONAL) {
 195                         $trackedlink = '<a title="'.$strnotrackforum.'" href="settracking.php?id='.
 196                                        $forum->id.'">'.$stryes.'</a>';
 197                     }
 198                     else {
 199                         $trackedlink = $stryes;
 200                     }
 201                 } else {
 202                     $unreadlink = '-';
 203                     $trackedlink = '<a title="'.$strtrackforum.'" href="settracking.php?id='.
 204                                    $forum->id.'">'.$strno.'</a>';
 205                 }
 206             }
 207
 208             $introoptions->para=false;
 209             $forum->intro = shorten_text(trim(format_text($forum->intro, FORMAT_HTML, $introoptions)), $CFG->forum_shortpost);
 210
 211             if ($forum->visible) {
 212                 $forumlink = "<a href=\"view.php?f=$forum->id\">".format_string($forum->name,true)."</a>";
 213                 $discussionlink = "<a href=\"view.php?f=$forum->id\">".$count."</a>";
 214             } else {
 215                 $forumlink = "<a class=\"dimmed\" href=\"view.php?f=$forum->id\">".format_string($forum->name,true)."</a>";
 216                 $discussionlink = "<a class=\"dimmed\" href=\"view.php?f=$forum->id\">".$count."</a>";
 217             }
 218
 219             //If this forum has RSS activated, calculate it
 220             $rsslink = '';
 221             if ($show_rss) {
 222                 if ($forum->rsstype and $forum->rssarticles) {
 223                     //Calculate the tolltip text
 224                     if ($forum->rsstype == 1) {
 225                         $tooltiptext = get_string("rsssubscriberssdiscussions","forum",format_string($forum->name));
 226                     } else {
 227                         $tooltiptext = get_string("rsssubscriberssposts","forum",format_string($forum->name));
 228                     }
 229                     if (empty($USER->id)) {
 230                         $userid = 0;
 231                     } else {
 232                         $userid = $USER->id;
 233                     }
 234                     //Get html code for RSS link
 235                     $rsslink = rss_get_link($course->id, $userid, "forum", $forum->id, $tooltiptext);
 236                 }
 237             }
 238
 239             if ($can_subscribe) {
 240                 if (forum_is_forcesubscribed($forum->id)) {
 241                     $sublink = $stryes;
 242                 } else {
 243                     if ($groupmode and !has_capability('moodle/site:accessallgroups', $context) and !mygroupid($course->id)) {
 244                         $sublink = $strno;   // Can't subscribe to a group forum (not in a group)
 245                         $forumlink = format_string($forum->name,true);
 246                     } else {
 247                         if (forum_is_subscribed($USER->id, $forum->id)) {
 248                             $subscribed = $stryes;
 249                             $subtitle = get_string("unsubscribe", "forum");
 250                         } else {
 251                             $subscribed = $strno;
 252                             $subtitle = get_string("subscribe", "forum");
 253                         }
 254                         if ($forum->forcesubscribe == FORUM_DISALLOWSUBSCRIBE
 255                                     && !has_capability('mod/forum:managesubscriptions', $context)) {
 256                             $sublink = '-';
 257                         } else {
 258                             $sublink = "<a title=\"$subtitle\" href=\"subscribe.php?id=$forum->id\">$subscribed</a>";
 259                         }
 260                     }
 261                 }
 262                 $row = array ($forumlink, $forum->intro, $discussionlink);
 263                 if ($usetracking) {
 264                     $row[] = $unreadlink;
 265                     $row[] = $trackedlink;    // Tracking.
 266                 }
 267                 $row[] = $sublink;
 268                 if ($show_rss) {
 269                     $row[] = $rsslink;
 270                 }
 271                 $generaltable->data[] = $row;
 272             } else {
 273                 $row = array ($forumlink, $forum->intro, $discussionlink);
 274                 if ($usetracking) {
 275                     $row[] = $unreadlink;
 276                     $row[] = $trackedlink;    // Tracking.
 277                 }
 278                 if ($show_rss) {
 279                     $row[] = $rsslink;
 280                 }
 281                 $generaltable->data[] = $row;
 282             }
 283         }
 284     }
 285
 286
 287     // Start of the table for Learning Forums
 288     $learningtable->head  = array ($strforum, $strdescription, $strdiscussions);
 289     $learningtable->align = array ("left", "left", "center");
 290
 291     if ($usetracking) {
 292         $learningtable->head[] = $strunreadposts;
 293         $learningtable->align[] = 'center';
 294
 295         $learningtable->head[] = $strtracking;
 296         $learningtable->align[] = 'center';
 297     }
 298
 299     if ($can_subscribe) {
 300         $learningtable->head[] = $strsubscribed;
 301         $learningtable->align[] = 'center';
 302     }
 303
 304     if ($show_rss = (($can_subscribe || $course->id == SITEID) &&
 305                      isset($CFG->enablerssfeeds) && isset($CFG->forum_enablerssfeeds) &&
 306                      $CFG->enablerssfeeds && $CFG->forum_enablerssfeeds)) {
 307         $learningtable->head[] = $strrss;
 308         $learningtable->align[] = 'center';
 309     }
 310
 311     /// Now let's process the learning forums
 312
 313     if ($course->id != SITEID) {    // Only real courses have learning forums
 314         // Add extra field for section number, at the front
 315         if ($course->format == 'weeks' or $course->format == 'weekscss') {
 316             array_unshift($learningtable->head, $strweek);
 317         } else {
 318             array_unshift($learningtable->head, $strsection);
 319         }
 320         array_unshift($learningtable->align, "center");
 321
 322
 323         if ($learningforums) {
 324             $currentsection = "";
 325             foreach ($learningforums as $key => $forum) {
 326                 $groupmode = groupmode($course, $forum);  /// Can do this because forum->groupmode is defined
 327                 $forum->visible = instance_is_visible("forum", $forum)
 328                                     || has_capability('moodle/course:view', $coursecontext);
 329
 330                 $cm = get_coursemodule_from_instance("forum", $forum->id, $course->id);
 331                 $context = get_context_instance(CONTEXT_MODULE, $cm->id);
 332
 333                 if ($groupmode == SEPARATEGROUPS and !has_capability('moodle/site:accessallgroups', $context)) {
 334                     $count = count_records("forum_discussions", "forum", "$forum->id", "groupid", $currentgroup);
 335                 } else {
 336                     $count = count_records("forum_discussions", "forum", "$forum->id");
 337                 }
 338
 339                 if ($usetracking) {
 340                     if (($forum->trackingtype == FORUM_TRACKING_ON) ||
 341                         !isset($untracked[$forum->id])) {
 342                         $groupid = ($groupmode==SEPARATEGROUPS
 343                                     && !has_capability('moodle/site:accessallgroups', $context))
 344                                     ? $currentgroup : false;
 345                         $unread = forum_tp_count_forum_unread_posts($USER->id, $forum->id, $groupid);
 346                         if ($unread > 0) {
 347                             $unreadlink = '<span class="unread"><a href="view.php?f='.$forum->id.'">'.$unread.'</a>';
 348                             $unreadlink .= '<a title="'.$strmarkallread.'" href="markposts.php?f='.
 349                                            $forum->id.'&amp;mark=read"><img src="'.$CFG->pixpath.'/t/clear.gif" alt="'.$strmarkallread.'" /></a></span>';
 350                         } else {
 351                             $unreadlink = '<span class="read"><a href="view.php?f='.$forum->id.'">'.$unread.'</a></span>';
 352                         }
 353                         if ($forum->trackingtype == FORUM_TRACKING_OPTIONAL) {
 354                             $trackedlink = '<a title="'.$strnotrackforum.'" href="settracking.php?id='.
 355                                            $forum->id.'">'.$stryes.'</a>';
 356                         }
 357                     } else {
 358                         $unreadlink = '-';
 359                         $trackedlink = '<a title="'.$strtrackforum.'" href="settracking.php?id='.$forum->id.'">'.$strno.'</a>';
 360                     }
 361                 }
 362
 363                 $introoptions->para=false;
 364                 $forum->intro = shorten_text(trim(format_text($forum->intro, FORMAT_HTML, $introoptions)), $CFG->forum_shortpost);
 365
 366                 if ($forum->section != $currentsection) {
 367                     $printsection = $forum->section;
 368                     if ($currentsection) {
 369                         $learningtable->data[] = 'hr';
 370                     }
 371                     $currentsection = $forum->section;
 372                 } else {
 373                     $printsection = "";
 374                 }
 375
 376                 if ($forum->visible) {
 377                     $forumlink = "<a href=\"view.php?f=$forum->id\">".format_string($forum->name,true)."</a>";
 378                     $discussionlink = "<a href=\"view.php?f=$forum->id\">".$count."</a>";
 379                 } else {
 380                     $forumlink = "<a class=\"dimmed\" href=\"view.php?f=$forum->id\">".format_string($forum->name,true)."</a>";
 381                     $discussionlink = "<a class=\"dimmed\" href=\"view.php?f=$forum->id\">".$count."</a>";
 382                 }
 383
 384                 //If this forum has RSS activated, calculate it
 385                 $rsslink = '';
 386                 if ($show_rss) {
 387                     if ($forum->rsstype and $forum->rssarticles) {
 388                         //Calculate the tolltip text
 389                         if ($forum->rsstype == 1) {
 390                             $tooltiptext = get_string("rsssubscriberssdiscussions","forum",format_string($forum->name));
 391                         } else {
 392                             $tooltiptext = get_string("rsssubscriberssposts","forum",format_string($forum->name));
 393                         }
 394                         if (empty($USER->id)) {
 395                             $userid = 0;
 396                         } else {
 397                             $userid = $USER->id;
 398                         }
 399                         //Get html code for RSS link
 400                         $rsslink = rss_get_link($course->id, $userid, "forum", $forum->id, $tooltiptext);
 401                     }
 402                 }
 403
 404                 if ($can_subscribe) {
 405                     if (forum_is_forcesubscribed($forum->id)) {
 406                         $sublink = $stryes;
 407                     } else {
 408                         if ($groupmode and !has_capability('moodle/site:accessallgroups', $context)
 409                                     and !mygroupid($course->id)) {
 410                             $sublink = $strno;   // Can't subscribe to a group forum (not in a group)
 411                             if ($groupmode == SEPARATEGROUPS) {
 412                                 $forumlink = format_string($forum->name,true);
 413                             }
 414                         } else {
 415                             if (forum_is_subscribed($USER->id, $forum->id)) {
 416                                 $subscribed = $stryes;
 417                                 $subtitle = $strunsubscribe;
 418                             } else {
 419                                 $subscribed = $strno;
 420                                 $subtitle = $strsubscribe;
 421                             }
 422                             $sublink = "<a title=\"$subtitle\" href=\"subscribe.php?id=$forum->id\">$subscribed</a>";
 423                         }
 424                     }
 425
 426                     $row = array ($printsection, $forumlink, $forum->intro, $discussionlink);
 427                     if ($usetracking) {
 428                         $row[] = $unreadlink;
 429                         $row[] = $trackedlink;    // Tracking.
 430                     }
 431                     $row[] = $sublink;
 432                     if ($show_rss) {
 433                         $row[] = $rsslink;
 434                     }
 435                     $learningtable->data[] = $row;
 436
 437                 } else {
 438                     $row = array ($printsection, $forumlink, $forum->intro, $discussionlink);
 439                     if ($usetracking) {
 440                         $row[] = $unreadlink;
 441                         $row[] = $trackedlink;    // Tracking.
 442                     }
 443                     if ($show_rss) {
 444                         $row[] = $rsslink;
 445                     }
 446                     $learningtable->data[] = $row;
 447                 }
 448             }
 449         }
 450     }
 451
 452
 453     /// Output the page
 454     $crumbs[] = array('name' => $strforums, 'link' => '', 'type' => 'activity');
 455
 456     print_header("$course->shortname: $strforums", $course->fullname,
 457                     build_navigation($crumbs),
 458                     "", "", true, $searchform, navmenu($course));
 459
 460     if (!isguest()) {
 461         print_box_start('subscription');
 462         echo '<span class="helplink">';
 463         echo '<a href="index.php?id='.$course->id.'&amp;subscribe=1">'.get_string('allsubscribe', 'forum').'</a>';
 464         echo '</span><br /><span class="helplink">';
 465         echo '<a href="index.php?id='.$course->id.'&amp;subscribe=0">'.get_string('allunsubscribe', 'forum').'</a>';
 466         echo '</span>';
 467         print_box_end();
 468         print_box('&nbsp;', 'clearer');
 469     }
 470
 471     if ($generalforums) {
 472         print_heading(get_string("generalforums", "forum"));
 473         print_table($generaltable);
 474     }
 475
 476     if ($learningforums) {
 477         print_heading(get_string("learningforums", "forum"));
 478         print_table($learningtable);
 479     }
 480
 481     print_footer($course);
 482
 483 ?>