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Differences Between: [Versions 39 and 400] [Versions 39 and 401] [Versions 39 and 402] [Versions 39 and 403]

   1  <?php
   2  
   3  // This file is part of Moodle - http://moodle.org/
   4  //
   5  // Moodle is free software: you can redistribute it and/or modify
   6  // it under the terms of the GNU General Public License as published by
   7  // the Free Software Foundation, either version 3 of the License, or
   8  // (at your option) any later version.
   9  //
  10  // Moodle is distributed in the hope that it will be useful,
  11  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  // GNU General Public License for more details.
  14  //
  15  // You should have received a copy of the GNU General Public License
  16  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  17  
  18  /**
  19   * @package   mod_forum
  20   * @copyright 1999 onwards Martin Dougiamas  {@link http://moodle.com}
  21   * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  22   */
  23  
  24  require_once(__DIR__ . '/../../config.php');
  25  require_once($CFG->dirroot . '/course/lib.php');
  26  require_once($CFG->dirroot . '/mod/forum/lib.php');
  27  require_once($CFG->libdir . '/rsslib.php');
  28  
  29  $id = optional_param('id', 0, PARAM_INT);                   // Course id
  30  $subscribe = optional_param('subscribe', null, PARAM_INT);  // Subscribe/Unsubscribe all forums
  31  
  32  $url = new moodle_url('/mod/forum/index.php', array('id' => $id));
  33  if ($subscribe !== null) {
  34      require_sesskey();
  35      $url->param('subscribe', $subscribe);
  36  }
  37  $PAGE->set_url($url);
  38  
  39  if ($id) {
  40      if (!$course = $DB->get_record('course', array('id' => $id))) {
  41          print_error('invalidcourseid');
  42      }
  43  } else {
  44      $course = get_site();
  45  }
  46  
  47  require_course_login($course);
  48  $PAGE->set_pagelayout('incourse');
  49  $coursecontext = context_course::instance($course->id);
  50  
  51  unset($SESSION->fromdiscussion);
  52  
  53  $params = array(
  54      'context' => context_course::instance($course->id)
  55  );
  56  $event = \mod_forum\event\course_module_instance_list_viewed::create($params);
  57  $event->add_record_snapshot('course', $course);
  58  $event->trigger();
  59  
  60  $strforums       = get_string('forums', 'forum');
  61  $strforum        = get_string('forum', 'forum');
  62  $strdescription  = get_string('description');
  63  $strdiscussions  = get_string('discussions', 'forum');
  64  $strsubscribed   = get_string('subscribed', 'forum');
  65  $strunreadposts  = get_string('unreadposts', 'forum');
  66  $strtracking     = get_string('tracking', 'forum');
  67  $strmarkallread  = get_string('markallread', 'forum');
  68  $strtrackforum   = get_string('trackforum', 'forum');
  69  $strnotrackforum = get_string('notrackforum', 'forum');
  70  $strsubscribe    = get_string('subscribe', 'forum');
  71  $strunsubscribe  = get_string('unsubscribe', 'forum');
  72  $stryes          = get_string('yes');
  73  $strno           = get_string('no');
  74  $strrss          = get_string('rss');
  75  $stremaildigest  = get_string('emaildigest');
  76  
  77  $searchform = forum_search_form($course);
  78  
  79  // Start of the table for General Forums.
  80  $generaltable = new html_table();
  81  $generaltable->head  = array ($strforum, $strdescription, $strdiscussions);
  82  $generaltable->align = array ('left', 'left', 'center');
  83  
  84  if ($usetracking = forum_tp_can_track_forums()) {
  85      $untracked = forum_tp_get_untracked_forums($USER->id, $course->id);
  86  
  87      $generaltable->head[] = $strunreadposts;
  88      $generaltable->align[] = 'center';
  89  
  90      $generaltable->head[] = $strtracking;
  91      $generaltable->align[] = 'center';
  92  }
  93  
  94  // Fill the subscription cache for this course and user combination.
  95  \mod_forum\subscriptions::fill_subscription_cache_for_course($course->id, $USER->id);
  96  
  97  $usesections = course_format_uses_sections($course->format);
  98  
  99  $table = new html_table();
 100  
 101  // Parse and organise all the forums.  Most forums are course modules but
 102  // some special ones are not.  These get placed in the general forums
 103  // category with the forums in section 0.
 104  
 105  $forums = $DB->get_records_sql("
 106      SELECT f.*,
 107             d.maildigest
 108        FROM {forum} f
 109   LEFT JOIN {forum_digests} d ON d.forum = f.id AND d.userid = ?
 110       WHERE f.course = ?
 111      ", array($USER->id, $course->id));
 112  
 113  $generalforums  = array();
 114  $learningforums = array();
 115  $modinfo = get_fast_modinfo($course);
 116  $showsubscriptioncolumns = false;
 117  
 118  foreach ($modinfo->get_instances_of('forum') as $forumid => $cm) {
 119      if (!$cm->uservisible or !isset($forums[$forumid])) {
 120          continue;
 121      }
 122  
 123      $forum = $forums[$forumid];
 124  
 125      if (!$context = context_module::instance($cm->id, IGNORE_MISSING)) {
 126          // Shouldn't happen.
 127          continue;
 128      }
 129  
 130      if (!has_capability('mod/forum:viewdiscussion', $context)) {
 131          // User can't view this one - skip it.
 132          continue;
 133      }
 134  
 135      // Determine whether subscription options should be displayed.
 136      $forum->cansubscribe = mod_forum\subscriptions::is_subscribable($forum);
 137      $forum->cansubscribe = $forum->cansubscribe || has_capability('mod/forum:managesubscriptions', $context);
 138      $forum->issubscribed = mod_forum\subscriptions::is_subscribed($USER->id, $forum, null, $cm);
 139  
 140      $showsubscriptioncolumns = $showsubscriptioncolumns || $forum->issubscribed || $forum->cansubscribe;
 141  
 142      // Fill two type array - order in modinfo is the same as in course.
 143      if ($forum->type == 'news' or $forum->type == 'social') {
 144          $generalforums[$forum->id] = $forum;
 145  
 146      } else if ($course->id == SITEID or empty($cm->sectionnum)) {
 147          $generalforums[$forum->id] = $forum;
 148  
 149      } else {
 150          $learningforums[$forum->id] = $forum;
 151      }
 152  }
 153  
 154  if ($showsubscriptioncolumns) {
 155      // The user can subscribe to at least one forum.
 156      $generaltable->head[] = $strsubscribed;
 157      $generaltable->align[] = 'center';
 158  
 159      $generaltable->head[] = $stremaildigest . ' ' . $OUTPUT->help_icon('emaildigesttype', 'mod_forum');
 160      $generaltable->align[] = 'center';
 161  
 162  }
 163  
 164  if ($show_rss = (($showsubscriptioncolumns || $course->id == SITEID) &&
 165                   isset($CFG->enablerssfeeds) && isset($CFG->forum_enablerssfeeds) &&
 166                   $CFG->enablerssfeeds && $CFG->forum_enablerssfeeds)) {
 167      $generaltable->head[] = $strrss;
 168      $generaltable->align[] = 'center';
 169  }
 170  
 171  
 172  // Do course wide subscribe/unsubscribe if requested
 173  if (!is_null($subscribe)) {
 174      if (isguestuser() or !$showsubscriptioncolumns) {
 175          // There should not be any links leading to this place, just redirect.
 176          redirect(
 177                  new moodle_url('/mod/forum/index.php', array('id' => $id)),
 178                  get_string('subscribeenrolledonly', 'forum'),
 179                  null,
 180                  \core\output\notification::NOTIFY_ERROR
 181              );
 182      }
 183      // Can proceed now, the user is not guest and is enrolled
 184      foreach ($modinfo->get_instances_of('forum') as $forumid => $cm) {
 185          $forum = $forums[$forumid];
 186          $modcontext = context_module::instance($cm->id);
 187          $cansub = false;
 188  
 189          if (has_capability('mod/forum:viewdiscussion', $modcontext)) {
 190              $cansub = true;
 191          }
 192          if ($cansub && $cm->visible == 0 &&
 193              !has_capability('mod/forum:managesubscriptions', $modcontext))
 194          {
 195              $cansub = false;
 196          }
 197          if (!\mod_forum\subscriptions::is_forcesubscribed($forum)) {
 198              $subscribed = \mod_forum\subscriptions::is_subscribed($USER->id, $forum, null, $cm);
 199              $canmanageactivities = has_capability('moodle/course:manageactivities', $coursecontext, $USER->id);
 200              if (($canmanageactivities || \mod_forum\subscriptions::is_subscribable($forum)) && $subscribe && !$subscribed && $cansub) {
 201                  \mod_forum\subscriptions::subscribe_user($USER->id, $forum, $modcontext, true);
 202              } else if (!$subscribe && $subscribed) {
 203                  \mod_forum\subscriptions::unsubscribe_user($USER->id, $forum, $modcontext, true);
 204              }
 205          }
 206      }
 207      $returnto = forum_go_back_to(new moodle_url('/mod/forum/index.php', array('id' => $course->id)));
 208      $shortname = format_string($course->shortname, true, array('context' => context_course::instance($course->id)));
 209      if ($subscribe) {
 210          redirect(
 211                  $returnto,
 212                  get_string('nowallsubscribed', 'forum', $shortname),
 213                  null,
 214                  \core\output\notification::NOTIFY_SUCCESS
 215              );
 216      } else {
 217          redirect(
 218                  $returnto,
 219                  get_string('nowallunsubscribed', 'forum', $shortname),
 220                  null,
 221                  \core\output\notification::NOTIFY_SUCCESS
 222              );
 223      }
 224  }
 225  
 226  if ($generalforums) {
 227      // Process general forums.
 228      foreach ($generalforums as $forum) {
 229          $cm      = $modinfo->instances['forum'][$forum->id];
 230          $context = context_module::instance($cm->id);
 231  
 232          $count = forum_count_discussions($forum, $cm, $course);
 233  
 234          if ($usetracking) {
 235              if ($forum->trackingtype == FORUM_TRACKING_OFF) {
 236                  $unreadlink  = '-';
 237                  $trackedlink = '-';
 238  
 239              } else {
 240                  if (isset($untracked[$forum->id])) {
 241                          $unreadlink  = '-';
 242                  } else if ($unread = forum_tp_count_forum_unread_posts($cm, $course)) {
 243                      $unreadlink = '<span class="unread"><a href="view.php?f='.$forum->id.'#unread">'.$unread.'</a>';
 244                      $icon = $OUTPUT->pix_icon('t/markasread', $strmarkallread);
 245                      $unreadlink .= '<a title="'.$strmarkallread.'" href="markposts.php?f='.
 246                                     $forum->id.'&amp;mark=read&amp;sesskey=' . sesskey() . '">' . $icon . '</a></span>';
 247                  } else {
 248                      $unreadlink = '<span class="read">0</span>';
 249                  }
 250  
 251                  if (($forum->trackingtype == FORUM_TRACKING_FORCED) && ($CFG->forum_allowforcedreadtracking)) {
 252                      $trackedlink = $stryes;
 253                  } else if ($forum->trackingtype === FORUM_TRACKING_OFF || ($USER->trackforums == 0)) {
 254                      $trackedlink = '-';
 255                  } else {
 256                      $aurl = new moodle_url('/mod/forum/settracking.php', array(
 257                              'id' => $forum->id,
 258                              'sesskey' => sesskey(),
 259                          ));
 260                      if (!isset($untracked[$forum->id])) {
 261                          $trackedlink = $OUTPUT->single_button($aurl, $stryes, 'post', array('title' => $strnotrackforum));
 262                      } else {
 263                          $trackedlink = $OUTPUT->single_button($aurl, $strno, 'post', array('title' => $strtrackforum));
 264                      }
 265                  }
 266              }
 267          }
 268  
 269          $forum->intro = shorten_text(format_module_intro('forum', $forum, $cm->id), $CFG->forum_shortpost);
 270          $forumname = format_string($forum->name, true);
 271  
 272          if ($cm->visible) {
 273              $style = '';
 274          } else {
 275              $style = 'class="dimmed"';
 276          }
 277          $forumlink = "<a href=\"view.php?f=$forum->id\" $style>".format_string($forum->name,true)."</a>";
 278          $discussionlink = "<a href=\"view.php?f=$forum->id\" $style>".$count."</a>";
 279  
 280          $row = array ($forumlink, $forum->intro, $discussionlink);
 281          if ($usetracking) {
 282              $row[] = $unreadlink;
 283              $row[] = $trackedlink;    // Tracking.
 284          }
 285  
 286          if ($showsubscriptioncolumns) {
 287              $row[] = forum_get_subscribe_link($forum, $context, array('subscribed' => $stryes,
 288                  'unsubscribed' => $strno, 'forcesubscribed' => $stryes,
 289                  'cantsubscribe' => '-'), false, false, true);
 290              $row[] = forum_index_get_forum_subscription_selector($forum);
 291          }
 292  
 293          // If this forum has RSS activated, calculate it.
 294          if ($show_rss) {
 295              if ($forum->rsstype and $forum->rssarticles) {
 296                  //Calculate the tooltip text
 297                  if ($forum->rsstype == 1) {
 298                      $tooltiptext = get_string('rsssubscriberssdiscussions', 'forum');
 299                  } else {
 300                      $tooltiptext = get_string('rsssubscriberssposts', 'forum');
 301                  }
 302  
 303                  if (!isloggedin() && $course->id == SITEID) {
 304                      $userid = guest_user()->id;
 305                  } else {
 306                      $userid = $USER->id;
 307                  }
 308                  //Get html code for RSS link
 309                  $row[] = rss_get_link($context->id, $userid, 'mod_forum', $forum->id, $tooltiptext);
 310              } else {
 311                  $row[] = '&nbsp;';
 312              }
 313          }
 314  
 315          $generaltable->data[] = $row;
 316      }
 317  }
 318  
 319  
 320  // Start of the table for Learning Forums
 321  $learningtable = new html_table();
 322  $learningtable->head  = array ($strforum, $strdescription, $strdiscussions);
 323  $learningtable->align = array ('left', 'left', 'center');
 324  
 325  if ($usetracking) {
 326      $learningtable->head[] = $strunreadposts;
 327      $learningtable->align[] = 'center';
 328  
 329      $learningtable->head[] = $strtracking;
 330      $learningtable->align[] = 'center';
 331  }
 332  
 333  if ($showsubscriptioncolumns) {
 334      $learningtable->head[] = $strsubscribed;
 335      $learningtable->align[] = 'center';
 336  
 337      $learningtable->head[] = $stremaildigest . ' ' . $OUTPUT->help_icon('emaildigesttype', 'mod_forum');
 338      $learningtable->align[] = 'center';
 339  }
 340  
 341  if ($show_rss = (($showsubscriptioncolumns || $course->id == SITEID) &&
 342                   isset($CFG->enablerssfeeds) && isset($CFG->forum_enablerssfeeds) &&
 343                   $CFG->enablerssfeeds && $CFG->forum_enablerssfeeds)) {
 344      $learningtable->head[] = $strrss;
 345      $learningtable->align[] = 'center';
 346  }
 347  
 348  // Now let's process the learning forums.
 349  if ($course->id != SITEID) {    // Only real courses have learning forums
 350      // 'format_.'$course->format only applicable when not SITEID (format_site is not a format)
 351      $strsectionname  = get_string('sectionname', 'format_'.$course->format);
 352      // Add extra field for section number, at the front
 353      array_unshift($learningtable->head, $strsectionname);
 354      array_unshift($learningtable->align, 'center');
 355  
 356  
 357      if ($learningforums) {
 358          $currentsection = '';
 359              foreach ($learningforums as $forum) {
 360              $cm      = $modinfo->instances['forum'][$forum->id];
 361              $context = context_module::instance($cm->id);
 362  
 363              $count = forum_count_discussions($forum, $cm, $course);
 364  
 365              if ($usetracking) {
 366                  if ($forum->trackingtype == FORUM_TRACKING_OFF) {
 367                      $unreadlink  = '-';
 368                      $trackedlink = '-';
 369  
 370                  } else {
 371                      if (isset($untracked[$forum->id])) {
 372                          $unreadlink  = '-';
 373                      } else if ($unread = forum_tp_count_forum_unread_posts($cm, $course)) {
 374                          $unreadlink = '<span class="unread"><a href="view.php?f='.$forum->id.'#unread">'.$unread.'</a>';
 375                          $icon = $OUTPUT->pix_icon('t/markasread', $strmarkallread);
 376                          $unreadlink .= '<a title="'.$strmarkallread.'" href="markposts.php?f='.
 377                                         $forum->id.'&amp;mark=read&sesskey=' . sesskey() . '">' . $icon . '</a></span>';
 378                      } else {
 379                          $unreadlink = '<span class="read">0</span>';
 380                      }
 381  
 382                      if (($forum->trackingtype == FORUM_TRACKING_FORCED) && ($CFG->forum_allowforcedreadtracking)) {
 383                          $trackedlink = $stryes;
 384                      } else if ($forum->trackingtype === FORUM_TRACKING_OFF || ($USER->trackforums == 0)) {
 385                          $trackedlink = '-';
 386                      } else {
 387                          $aurl = new moodle_url('/mod/forum/settracking.php', array('id' => $forum->id));
 388                          if (!isset($untracked[$forum->id])) {
 389                              $trackedlink = $OUTPUT->single_button($aurl, $stryes, 'post', array('title' => $strnotrackforum));
 390                          } else {
 391                              $trackedlink = $OUTPUT->single_button($aurl, $strno, 'post', array('title' => $strtrackforum));
 392                          }
 393                      }
 394                  }
 395              }
 396  
 397              $forum->intro = shorten_text(format_module_intro('forum', $forum, $cm->id), $CFG->forum_shortpost);
 398  
 399              if ($cm->sectionnum != $currentsection) {
 400                  $printsection = get_section_name($course, $cm->sectionnum);
 401                  if ($currentsection) {
 402                      $learningtable->data[] = 'hr';
 403                  }
 404                  $currentsection = $cm->sectionnum;
 405              } else {
 406                  $printsection = '';
 407              }
 408  
 409              $forumname = format_string($forum->name,true);
 410  
 411              if ($cm->visible) {
 412                  $style = '';
 413              } else {
 414                  $style = 'class="dimmed"';
 415              }
 416              $forumlink = "<a href=\"view.php?f=$forum->id\" $style>".format_string($forum->name,true)."</a>";
 417              $discussionlink = "<a href=\"view.php?f=$forum->id\" $style>".$count."</a>";
 418  
 419              $row = array ($printsection, $forumlink, $forum->intro, $discussionlink);
 420              if ($usetracking) {
 421                  $row[] = $unreadlink;
 422                  $row[] = $trackedlink;    // Tracking.
 423              }
 424  
 425              if ($showsubscriptioncolumns) {
 426                  $row[] = forum_get_subscribe_link($forum, $context, array('subscribed' => $stryes,
 427                      'unsubscribed' => $strno, 'forcesubscribed' => $stryes,
 428                      'cantsubscribe' => '-'), false, false, true);
 429                  $row[] = forum_index_get_forum_subscription_selector($forum);
 430              }
 431  
 432              //If this forum has RSS activated, calculate it
 433              if ($show_rss) {
 434                  if ($forum->rsstype and $forum->rssarticles) {
 435                      //Calculate the tolltip text
 436                      if ($forum->rsstype == 1) {
 437                          $tooltiptext = get_string('rsssubscriberssdiscussions', 'forum');
 438                      } else {
 439                          $tooltiptext = get_string('rsssubscriberssposts', 'forum');
 440                      }
 441                      //Get html code for RSS link
 442                      $row[] = rss_get_link($context->id, $USER->id, 'mod_forum', $forum->id, $tooltiptext);
 443                  } else {
 444                      $row[] = '&nbsp;';
 445                  }
 446              }
 447  
 448              $learningtable->data[] = $row;
 449          }
 450      }
 451  }
 452  
 453  // Output the page.
 454  $PAGE->navbar->add($strforums);
 455  $PAGE->set_title("$course->shortname: $strforums");
 456  $PAGE->set_heading($course->fullname);
 457  $PAGE->set_button($searchform);
 458  echo $OUTPUT->header();
 459  
 460  if (!isguestuser() && isloggedin() && $showsubscriptioncolumns) {
 461      // Show the subscribe all options only to non-guest, enrolled users.
 462      echo $OUTPUT->box_start('subscription');
 463  
 464      $subscriptionlink = new moodle_url('/mod/forum/index.php', [
 465          'id'        => $course->id,
 466          'sesskey'   => sesskey(),
 467      ]);
 468  
 469      // Subscribe all.
 470      $subscriptionlink->param('subscribe', 1);
 471      echo html_writer::tag('div', html_writer::link($subscriptionlink, get_string('allsubscribe', 'forum')), [
 472              'class' => 'helplink',
 473          ]);
 474  
 475      // Unsubscribe all.
 476      $subscriptionlink->param('subscribe', 0);
 477      echo html_writer::tag('div', html_writer::link($subscriptionlink, get_string('allunsubscribe', 'forum')), [
 478              'class' => 'helplink',
 479          ]);
 480  
 481      echo $OUTPUT->box_end();
 482      echo $OUTPUT->box('&nbsp;', 'clearer');
 483  }
 484  
 485  if ($generalforums) {
 486      echo $OUTPUT->heading(get_string('generalforums', 'forum'), 2);
 487      echo html_writer::table($generaltable);
 488  }
 489  
 490  if ($learningforums) {
 491      echo $OUTPUT->heading(get_string('learningforums', 'forum'), 2);
 492      echo html_writer::table($learningtable);
 493  }
 494  
 495  echo $OUTPUT->footer();
 496  
 497  /**
 498   * Get the content of the forum subscription options for this forum.
 499   *
 500   * @param   stdClass    $forum      The forum to return options for
 501   * @return  string
 502   */
 503  function forum_index_get_forum_subscription_selector($forum) {
 504      global $OUTPUT, $PAGE;
 505  
 506      if ($forum->cansubscribe || $forum->issubscribed) {
 507          if ($forum->maildigest === null) {
 508              $forum->maildigest = -1;
 509          }
 510  
 511          $renderer = $PAGE->get_renderer('mod_forum');
 512          return $OUTPUT->render($renderer->render_digest_options($forum, $forum->maildigest));
 513      } else {
 514          // This user can subscribe to some forums. Add the empty fields.
 515          return '';
 516      }
 517  };