5 * Provides discussion forums.
8 use Drupal\comment\CommentInterface;
9 use Drupal\comment\Plugin\Field\FieldType\CommentItemInterface;
10 use Drupal\Core\Entity\EntityInterface;
11 use Drupal\Core\Entity\EntityTypeInterface;
13 use Drupal\Core\Form\FormStateInterface;
14 use Drupal\Core\Routing\RouteMatchInterface;
15 use Drupal\taxonomy\VocabularyInterface;
16 use Drupal\user\Entity\User;
19 * Implements hook_help().
21 function forum_help($route_name, RouteMatchInterface $route_match) {
22 switch ($route_name) {
23 case 'help.page.forum':
25 $output .= '<h3>' . t('About') . '</h3>';
26 $output .= '<p>' . t('The Forum module lets you create threaded discussion forums with functionality similar to other message board systems. In a forum, users post topics and threads in nested hierarchies, allowing discussions to be categorized and grouped.') . '</p>';
27 $output .= '<p>' . t('The Forum module adds and uses a content type called <em>Forum topic</em>. For background information on content types, see the <a href=":node_help">Node module help page</a>.', [':node_help' => \Drupal::url('help.page', ['name' => 'node'])]) . '</p>';
28 $output .= '<p>' . t('A forum is represented by a hierarchical structure, consisting of:');
30 $output .= '<li>' . t('<em>Forums</em> (for example, <em>Recipes for cooking vegetables</em>)') . '</li>';
31 $output .= '<li>' . t('<em>Forum topics</em> submitted by users (for example, <em>How to cook potatoes</em>), which start discussions.') . '</li>';
32 $output .= '<li>' . t('Threaded <em>comments</em> submitted by users (for example, <em>You wash the potatoes first and then...</em>).') . '</li>';
33 $output .= '<li>' . t('Optional <em>containers</em>, used to group similar forums. Forums can be placed inside containers, and vice versa.') . '</li>';
36 $output .= '<p>' . t('For more information, see the <a href=":forum">online documentation for the Forum module</a>.', [':forum' => 'https://www.drupal.org/documentation/modules/forum']) . '</p>';
37 $output .= '<h3>' . t('Uses') . '</h3>';
39 $output .= '<dt>' . t('Setting up the forum structure') . '</dt>';
40 $output .= '<dd>' . t('Visit the <a href=":forums">Forums page</a> to set up containers and forums to hold your discussion topics.', [':forums' => \Drupal::url('forum.overview')]) . '</dd>';
41 $output .= '<dt>' . t('Starting a discussion') . '</dt>';
42 $output .= '<dd>' . t('The <a href=":create-topic">Forum topic</a> link on the <a href=":content-add">Add content</a> page creates the first post of a new threaded discussion, or thread.', [':create-topic' => \Drupal::url('node.add', ['node_type' => 'forum']), ':content-add' => \Drupal::url('node.add_page')]) . '</dd>';
43 $output .= '<dt>' . t('Navigating in the forum') . '</dt>';
44 $output .= '<dd>' . t('Enabling the Forum module provides a default <em>Forums</em> menu item in the Tools menu that links to the <a href=":forums">Forums page</a>.', [':forums' => \Drupal::url('forum.index')]) . '</dd>';
45 $output .= '<dt>' . t('Moving forum topics') . '</dt>';
46 $output .= '<dd>' . t('A forum topic (and all of its comments) may be moved between forums by selecting a different forum while editing a forum topic. When moving a forum topic between forums, the <em>Leave shadow copy</em> option creates a link in the original forum pointing to the new location.') . '</dd>';
47 $output .= '<dt>' . t('Locking and disabling comments') . '</dt>';
48 $output .= '<dd>' . t('Selecting <em>Closed</em> under <em>Comment settings</em> while editing a forum topic will lock (prevent new comments on) the thread. Selecting <em>Hidden</em> under <em>Comment settings</em> while editing a forum topic will hide all existing comments on the thread, and prevent new ones.') . '</dd>';
52 case 'forum.overview':
53 $output = '<p>' . t('Forums contain forum topics. Use containers to group related forums.') . '</p>';
56 '#url' => Url::fromRoute('help.page', ['name' => 'forum']),
57 '#title' => t('More help'),
59 'class' => ['icon-help'],
63 '#theme' => 'container',
64 '#children' => $more_help_link,
66 'class' => ['more-link'],
69 $output .= \Drupal::service('renderer')->renderPlain($container);
72 case 'forum.add_container':
73 return '<p>' . t('Use containers to group related forums.') . '</p>';
75 case 'forum.add_forum':
76 return '<p>' . t('A forum holds related forum topics.') . '</p>';
78 case 'forum.settings':
79 return '<p>' . t('Adjust the display of your forum topics. Organize the forums on the <a href=":forum-structure">forum structure page</a>.', [':forum-structure' => \Drupal::url('forum.overview')]) . '</p>';
84 * Implements hook_theme().
86 function forum_theme() {
89 'variables' => ['forums' => [], 'topics' => [], 'topics_pager' => [], 'parents' => NULL, 'term' => NULL, 'sortby' => NULL, 'forum_per_page' => NULL, 'header' => []],
92 'variables' => ['forums' => NULL, 'parents' => NULL, 'tid' => NULL],
95 'variables' => ['new_posts' => NULL, 'num_posts' => 0, 'comment_mode' => 0, 'sticky' => 0, 'first_new' => FALSE],
97 'forum_submitted' => [
98 'variables' => ['topic' => NULL],
104 * Implements hook_entity_type_build().
106 function forum_entity_type_build(array &$entity_types) {
107 /** @var $entity_types \Drupal\Core\Entity\EntityTypeInterface[] */
108 // Register forum specific forms.
109 $entity_types['taxonomy_term']
110 ->setFormClass('forum', 'Drupal\forum\Form\ForumForm')
111 ->setFormClass('container', 'Drupal\forum\Form\ContainerForm')
112 ->setLinkTemplate('forum-edit-container-form', '/admin/structure/forum/edit/container/{taxonomy_term}')
113 ->setLinkTemplate('forum-delete-form', '/admin/structure/forum/delete/forum/{taxonomy_term}')
114 ->setLinkTemplate('forum-edit-form', '/admin/structure/forum/edit/forum/{taxonomy_term}');
118 * Implements hook_entity_bundle_info_alter().
120 function forum_entity_bundle_info_alter(&$bundles) {
121 // Take over URI construction for taxonomy terms that are forums.
122 if ($vid = \Drupal::config('forum.settings')->get('vocabulary')) {
123 if (isset($bundles['taxonomy_term'][$vid])) {
124 $bundles['taxonomy_term'][$vid]['uri_callback'] = 'forum_uri';
130 * Entity URI callback used in forum_entity_bundle_info_alter().
132 function forum_uri($forum) {
133 return Url::fromRoute('forum.page', ['taxonomy_term' => $forum->id()]);
137 * Implements hook_entity_bundle_field_info_alter().
139 function forum_entity_bundle_field_info_alter(&$fields, EntityTypeInterface $entity_type, $bundle) {
140 if ($entity_type->id() == 'node' && !empty($fields['taxonomy_forums'])) {
141 $fields['taxonomy_forums']->addConstraint('ForumLeaf', []);
146 * Implements hook_ENTITY_TYPE_presave() for node entities.
148 * Assigns the forum taxonomy when adding a topic from within a forum.
150 function forum_node_presave(EntityInterface $node) {
151 if (\Drupal::service('forum_manager')->checkNodeType($node)) {
152 // Make sure all fields are set properly:
153 $node->icon = !empty($node->icon) ? $node->icon : '';
154 if (!$node->taxonomy_forums->isEmpty()) {
155 $node->forum_tid = $node->taxonomy_forums->target_id;
156 // Only do a shadow copy check if this is not a new node.
157 if (!$node->isNew()) {
158 $old_tid = \Drupal::service('forum.index_storage')->getOriginalTermId($node);
159 if ($old_tid && isset($node->forum_tid) && ($node->forum_tid != $old_tid) && !empty($node->shadow)) {
160 // A shadow copy needs to be created. Retain new term and add old term.
161 $node->taxonomy_forums[count($node->taxonomy_forums)] = ['target_id' => $old_tid];
169 * Implements hook_ENTITY_TYPE_update() for node entities.
171 function forum_node_update(EntityInterface $node) {
172 if (\Drupal::service('forum_manager')->checkNodeType($node)) {
173 // If this is not a new revision and does exist, update the forum record,
174 // otherwise insert a new one.
175 /** @var \Drupal\forum\ForumIndexStorageInterface $forum_index_storage */
176 $forum_index_storage = \Drupal::service('forum.index_storage');
177 if ($node->getRevisionId() == $node->original->getRevisionId() && $forum_index_storage->getOriginalTermId($node)) {
178 if (!empty($node->forum_tid)) {
179 $forum_index_storage->update($node);
181 // The node is removed from the forum.
183 $forum_index_storage->delete($node);
187 if (!empty($node->forum_tid)) {
188 $forum_index_storage->create($node);
191 // If the node has a shadow forum topic, update the record for this
193 if (!empty($node->shadow)) {
194 $forum_index_storage->deleteRevision($node);
195 $forum_index_storage->create($node);
198 // If the node is published, update the forum index.
199 if ($node->isPublished()) {
200 $forum_index_storage->deleteIndex($node);
201 $forum_index_storage->createIndex($node);
203 // When a forum node is unpublished, remove it from the forum_index table.
205 $forum_index_storage->deleteIndex($node);
211 * Implements hook_ENTITY_TYPE_insert() for node entities.
213 function forum_node_insert(EntityInterface $node) {
214 if (\Drupal::service('forum_manager')->checkNodeType($node)) {
215 /** @var \Drupal\forum\ForumIndexStorageInterface $forum_index_storage */
216 $forum_index_storage = \Drupal::service('forum.index_storage');
217 if (!empty($node->forum_tid)) {
218 $forum_index_storage->create($node);
221 // If the node is published, update the forum index.
222 if ($node->isPublished()) {
223 $forum_index_storage->createIndex($node);
229 * Implements hook_ENTITY_TYPE_predelete() for node entities.
231 function forum_node_predelete(EntityInterface $node) {
232 if (\Drupal::service('forum_manager')->checkNodeType($node)) {
233 /** @var \Drupal\forum\ForumIndexStorageInterface $forum_index_storage */
234 $forum_index_storage = \Drupal::service('forum.index_storage');
235 $forum_index_storage->delete($node);
236 $forum_index_storage->deleteIndex($node);
241 * Implements hook_ENTITY_TYPE_storage_load() for node entities.
243 function forum_node_storage_load($nodes) {
245 foreach ($nodes as $node) {
246 if (\Drupal::service('forum_manager')->checkNodeType($node)) {
247 $node_vids[] = $node->getRevisionId();
250 if (!empty($node_vids)) {
251 $result = \Drupal::service('forum.index_storage')->read($node_vids);
252 foreach ($result as $record) {
253 $nodes[$record->nid]->forum_tid = $record->tid;
259 * Implements hook_ENTITY_TYPE_update() for comment entities.
261 function forum_comment_update(CommentInterface $comment) {
262 if ($comment->getCommentedEntityTypeId() == 'node') {
263 \Drupal::service('forum.index_storage')->updateIndex($comment->getCommentedEntity());
268 * Implements hook_ENTITY_TYPE_insert() for comment entities.
270 function forum_comment_insert(CommentInterface $comment) {
271 if ($comment->getCommentedEntityTypeId() == 'node') {
272 \Drupal::service('forum.index_storage')->updateIndex($comment->getCommentedEntity());
277 * Implements hook_ENTITY_TYPE_delete() for comment entities.
279 function forum_comment_delete(CommentInterface $comment) {
280 if ($comment->getCommentedEntityTypeId() == 'node') {
281 \Drupal::service('forum.index_storage')->updateIndex($comment->getCommentedEntity());
286 * Implements hook_form_BASE_FORM_ID_alter() for \Drupal\taxonomy\VocabularyForm.
288 function forum_form_taxonomy_vocabulary_form_alter(&$form, FormStateInterface $form_state, $form_id) {
289 $vid = \Drupal::config('forum.settings')->get('vocabulary');
290 $vocabulary = $form_state->getFormObject()->getEntity();
291 if ($vid == $vocabulary->id()) {
292 $form['help_forum_vocab'] = [
293 '#markup' => t('This is the designated forum vocabulary. Some of the normal vocabulary options have been removed.'),
296 // Forum's vocabulary always has single hierarchy. Forums and containers
297 // have only one parent or no parent for root items. By default this value
299 $form['hierarchy']['#value'] = VocabularyInterface::HIERARCHY_SINGLE;
300 // Do not allow to delete forum's vocabulary.
301 $form['actions']['delete']['#access'] = FALSE;
302 // Do not allow to change a vid of forum's vocabulary.
303 $form['vid']['#disabled'] = TRUE;
308 * Implements hook_form_FORM_ID_alter() for \Drupal\taxonomy\TermForm.
310 function forum_form_taxonomy_term_form_alter(&$form, FormStateInterface $form_state, $form_id) {
311 $vid = \Drupal::config('forum.settings')->get('vocabulary');
312 if (isset($form['vid']['#value']) && $form['vid']['#value'] == $vid) {
313 // Hide multiple parents select from forum terms.
314 $form['relations']['parent']['#access'] = FALSE;
319 * Implements hook_form_BASE_FORM_ID_alter() for \Drupal\node\NodeForm.
321 function forum_form_node_form_alter(&$form, FormStateInterface $form_state, $form_id) {
322 $node = $form_state->getFormObject()->getEntity();
323 if (isset($node->taxonomy_forums) && !$node->isNew()) {
324 $forum_terms = $node->taxonomy_forums;
325 // If editing, give option to leave shadows.
326 $shadow = (count($forum_terms) > 1);
328 '#type' => 'checkbox',
329 '#title' => t('Leave shadow copy'),
330 '#default_value' => $shadow,
331 '#description' => t('If you move this topic, you can leave a link in the old forum to the new forum.'),
333 $form['forum_tid'] = ['#type' => 'value', '#value' => $node->forum_tid];
336 if (isset($form['taxonomy_forums'])) {
337 $widget =& $form['taxonomy_forums']['widget'];
338 // Make the vocabulary required for 'real' forum-nodes.
339 $widget['#required'] = TRUE;
340 $widget['#multiple'] = FALSE;
341 if (empty($widget['#default_value'])) {
342 // If there is no default forum already selected, try to get the forum
343 // ID from the URL (e.g., if we are on a page like node/add/forum/2, we
344 // expect "2" to be the ID of the forum that was requested).
345 $requested_forum_id = \Drupal::request()->query->get('forum_id');
346 $widget['#default_value'] = is_numeric($requested_forum_id) ? $requested_forum_id : '';
352 * Implements hook_preprocess_HOOK() for block templates.
354 function forum_preprocess_block(&$variables) {
355 if ($variables['configuration']['provider'] == 'forum') {
356 $variables['attributes']['role'] = 'navigation';
361 * Implements hook_theme_suggestions_HOOK().
363 function forum_theme_suggestions_forums(array $variables) {
365 $tid = $variables['term']->id();
367 // Provide separate template suggestions based on what's being output. Topic
368 // ID is also accounted for. Check both variables to be safe then the inverse.
369 // Forums with topic IDs take precedence.
370 if ($variables['forums'] && !$variables['topics']) {
371 $suggestions[] = 'forums__containers';
372 $suggestions[] = 'forums__' . $tid;
373 $suggestions[] = 'forums__containers__' . $tid;
375 elseif (!$variables['forums'] && $variables['topics']) {
376 $suggestions[] = 'forums__topics';
377 $suggestions[] = 'forums__' . $tid;
378 $suggestions[] = 'forums__topics__' . $tid;
381 $suggestions[] = 'forums__' . $tid;
388 * Prepares variables for forums templates.
390 * Default template: forums.html.twig.
392 * @param array $variables
393 * An array containing the following elements:
394 * - forums: An array of all forum objects to display for the given taxonomy
395 * term ID. If tid = 0 then all the top-level forums are displayed.
396 * - topics: An array of all the topics in the current forum.
397 * - parents: An array of taxonomy term objects that are ancestors of the
399 * - term: Taxonomy term of the current forum.
400 * - sortby: One of the following integers indicating the sort criteria:
401 * - 1: Date - newest first.
402 * - 2: Date - oldest first.
403 * - 3: Posts with the most comments first.
404 * - 4: Posts with the least comments first.
405 * - forum_per_page: The maximum number of topics to display per page.
407 function template_preprocess_forums(&$variables) {
408 $variables['tid'] = $variables['term']->id();
409 if ($variables['forums_defined'] = count($variables['forums']) || count($variables['parents'])) {
410 if (!empty($variables['forums'])) {
411 $variables['forums'] = [
412 '#theme' => 'forum_list',
413 '#forums' => $variables['forums'],
414 '#parents' => $variables['parents'],
415 '#tid' => $variables['tid'],
419 if ($variables['term'] && empty($variables['term']->forum_container->value) && !empty($variables['topics'])) {
420 $forum_topic_list_header = $variables['header'];
423 '#theme' => 'table__forum_topic_list',
424 '#responsive' => FALSE,
425 '#attributes' => ['id' => 'forum-topic-' . $variables['tid']],
430 if (!empty($forum_topic_list_header)) {
431 $table['#header'] = $forum_topic_list_header;
434 /** @var \Drupal\node\NodeInterface $topic */
435 foreach ($variables['topics'] as $id => $topic) {
436 $variables['topics'][$id]->icon = [
437 '#theme' => 'forum_icon',
438 '#new_posts' => $topic->new,
439 '#num_posts' => $topic->comment_count,
440 '#comment_mode' => $topic->comment_mode,
441 '#sticky' => $topic->isSticky(),
442 '#first_new' => $topic->first_new,
445 // We keep the actual tid in forum table, if it's different from the
446 // current tid then it means the topic appears in two forums, one of
447 // them is a shadow copy.
448 if ($variables['tid'] != $topic->forum_tid) {
449 $variables['topics'][$id]->moved = TRUE;
450 $variables['topics'][$id]->title = $topic->getTitle();
451 $variables['topics'][$id]->message = \Drupal::l(t('This topic has been moved'), new Url('forum.page', ['taxonomy_term' => $topic->forum_tid]));
454 $variables['topics'][$id]->moved = FALSE;
455 $variables['topics'][$id]->title_link = \Drupal::l($topic->getTitle(), $topic->urlInfo());
456 $variables['topics'][$id]->message = '';
458 $forum_submitted = ['#theme' => 'forum_submitted', '#topic' => (object) [
459 'uid' => $topic->getOwnerId(),
460 'name' => $topic->getOwner()->getDisplayName(),
461 'created' => $topic->getCreatedTime(),
463 $variables['topics'][$id]->submitted = drupal_render($forum_submitted);
465 '#theme' => 'forum_submitted',
466 '#topic' => isset($topic->last_reply) ? $topic->last_reply : NULL,
468 $variables['topics'][$id]->last_reply = drupal_render($forum_submitted);
470 $variables['topics'][$id]->new_text = '';
471 $variables['topics'][$id]->new_url = '';
473 if ($topic->new_replies) {
474 $page_number = \Drupal::entityManager()->getStorage('comment')
475 ->getNewCommentPageNumber($topic->comment_count, $topic->new_replies, $topic, 'comment_forum');
476 $query = $page_number ? ['page' => $page_number] : NULL;
477 $variables['topics'][$id]->new_text = \Drupal::translation()->formatPlural($topic->new_replies, '1 new post<span class="visually-hidden"> in topic %title</span>', '@count new posts<span class="visually-hidden"> in topic %title</span>', ['%title' => $variables['topics'][$id]->label()]);
478 $variables['topics'][$id]->new_url = \Drupal::url('entity.node.canonical', ['node' => $topic->id()], ['query' => $query, 'fragment' => 'new']);
481 // Build table rows from topics.
487 '#markup' => '<div class="forum__title"><div>' . $topic->title_link . '</div><div>' . $topic->submitted . '</div></div>',
490 'class' => ['forum__topic'],
495 'data' => $topic->message,
501 if ($topic->new_replies) {
502 $new_replies = '<br /><a href="' . $topic->new_url . '">' . $topic->new_text . '</a>';
508 '#prefix' => $topic->comment_count,
509 '#markup' => $new_replies,
512 'class' => ['forum__replies'],
515 'data' => $topic->last_reply,
516 'class' => ['forum__last-reply'],
519 $table['#rows'][] = $row;
522 $variables['topics'] = $table;
523 $variables['topics_pager'] = [
531 * Prepares variables for forum list templates.
533 * Default template: forum-list.html.twig.
535 * @param array $variables
536 * An array containing the following elements:
537 * - forums: An array of all forum objects to display for the given taxonomy
538 * term ID. If tid = 0 then all the top-level forums are displayed.
539 * - parents: An array of taxonomy term objects that are ancestors of the
541 * - tid: Taxonomy term ID of the current forum.
543 function template_preprocess_forum_list(&$variables) {
544 $user = \Drupal::currentUser();
546 // Sanitize each forum so that the template can safely print the data.
547 foreach ($variables['forums'] as $id => $forum) {
548 $variables['forums'][$id]->description = ['#markup' => $forum->description->value];
549 $variables['forums'][$id]->link = forum_uri($forum);
550 $variables['forums'][$id]->name = $forum->label();
551 $variables['forums'][$id]->is_container = !empty($forum->forum_container->value);
552 $variables['forums'][$id]->zebra = $row % 2 == 0 ? 'odd' : 'even';
555 $variables['forums'][$id]->new_text = '';
556 $variables['forums'][$id]->new_url = '';
557 $variables['forums'][$id]->new_topics = 0;
558 $variables['forums'][$id]->old_topics = $forum->num_topics;
559 $variables['forums'][$id]->icon_class = 'default';
560 $variables['forums'][$id]->icon_title = t('No new posts');
561 if ($user->isAuthenticated()) {
562 $variables['forums'][$id]->new_topics = \Drupal::service('forum_manager')->unreadTopics($forum->id(), $user->id());
563 if ($variables['forums'][$id]->new_topics) {
564 $variables['forums'][$id]->new_text = \Drupal::translation()->formatPlural($variables['forums'][$id]->new_topics, '1 new post<span class="visually-hidden"> in forum %title</span>', '@count new posts<span class="visually-hidden"> in forum %title</span>', ['%title' => $variables['forums'][$id]->label()]);
565 $variables['forums'][$id]->new_url = \Drupal::url('forum.page', ['taxonomy_term' => $forum->id()], ['fragment' => 'new']);
566 $variables['forums'][$id]->icon_class = 'new';
567 $variables['forums'][$id]->icon_title = t('New posts');
569 $variables['forums'][$id]->old_topics = $forum->num_topics - $variables['forums'][$id]->new_topics;
571 $forum_submitted = ['#theme' => 'forum_submitted', '#topic' => $forum->last_post];
572 $variables['forums'][$id]->last_reply = drupal_render($forum_submitted);
575 $variables['pager'] = [
579 // Give meaning to $tid for themers. $tid actually stands for term ID.
580 $variables['forum_id'] = $variables['tid'];
581 unset($variables['tid']);
585 * Prepares variables for forum icon templates.
587 * Default template: forum-icon.html.twig.
589 * @param array $variables
590 * An array containing the following elements:
591 * - new_posts: Indicates whether or not the topic contains new posts.
592 * - num_posts: The total number of posts in all topics.
593 * - comment_mode: An integer indicating whether comments are open, closed,
595 * - sticky: Indicates whether the topic is sticky.
596 * - first_new: Indicates whether this is the first topic with new posts.
598 function template_preprocess_forum_icon(&$variables) {
599 $variables['hot_threshold'] = \Drupal::config('forum.settings')->get('topics.hot_threshold');
601 if ($variables['num_posts'] > $variables['hot_threshold']) {
602 $variables['icon_status'] = $variables['new_posts'] ? 'hot-new' : 'hot';
603 $variables['icon_title'] = $variables['new_posts'] ? t('Hot topic, new comments') : t('Hot topic');
606 $variables['icon_status'] = $variables['new_posts'] ? 'new' : 'default';
607 $variables['icon_title'] = $variables['new_posts'] ? t('New comments') : t('Normal topic');
610 if ($variables['comment_mode'] == CommentItemInterface::CLOSED || $variables['comment_mode'] == CommentItemInterface::HIDDEN) {
611 $variables['icon_status'] = 'closed';
612 $variables['icon_title'] = t('Closed topic');
615 if ($variables['sticky'] == 1) {
616 $variables['icon_status'] = 'sticky';
617 $variables['icon_title'] = t('Sticky topic');
620 $variables['attributes']['title'] = $variables['icon_title'];
624 * Prepares variables for forum submission information templates.
626 * The submission information will be displayed in the forum list and topic
629 * Default template: forum-submitted.html.twig.
631 * @param array $variables
632 * An array containing the following elements:
633 * - topic: The topic object.
635 function template_preprocess_forum_submitted(&$variables) {
636 $variables['author'] = '';
637 if (isset($variables['topic']->uid)) {
638 $username = ['#theme' => 'username', '#account' => User::load($variables['topic']->uid)];
639 $variables['author'] = drupal_render($username);
641 $variables['time'] = isset($variables['topic']->created) ? \Drupal::service('date.formatter')->formatTimeDiffSince($variables['topic']->created) : '';