--- /dev/null
+<?php
+
+/**
+ * @file
+ * Provide views data for comment.module.
+ */
+
+use Drupal\Core\Entity\ContentEntityInterface;
+
+/**
+ * Implements hook_views_data_alter().
+ */
+function comment_views_data_alter(&$data) {
+ // New comments are only supported for node table because it requires the
+ // history table.
+ $data['node']['new_comments'] = [
+ 'title' => t('New comments'),
+ 'help' => t('The number of new comments on the node.'),
+ 'field' => [
+ 'id' => 'node_new_comments',
+ 'no group by' => TRUE,
+ ],
+ ];
+
+ // Provide a integration for each entity type except comment.
+ foreach (\Drupal::entityManager()->getDefinitions() as $entity_type_id => $entity_type) {
+ if ($entity_type_id == 'comment' || !$entity_type->entityClassImplements(ContentEntityInterface::class) || !$entity_type->getBaseTable()) {
+ continue;
+ }
+ $fields = \Drupal::service('comment.manager')->getFields($entity_type_id);
+ $base_table = $entity_type->getDataTable() ?: $entity_type->getBaseTable();
+ $args = ['@entity_type' => $entity_type_id];
+
+ if ($fields) {
+ $data[$base_table]['comments_link'] = [
+ 'field' => [
+ 'title' => t('Add comment link'),
+ 'help' => t('Display the standard add comment link used on regular @entity_type, which will only display if the viewing user has access to add a comment.', $args),
+ 'id' => 'comment_entity_link',
+ ],
+ ];
+
+ // Multilingual properties are stored in data table.
+ if (!($table = $entity_type->getDataTable())) {
+ $table = $entity_type->getBaseTable();
+ }
+ $data[$table]['uid_touch'] = [
+ 'title' => t('User posted or commented'),
+ 'help' => t('Display nodes only if a user posted the @entity_type or commented on the @entity_type.', $args),
+ 'argument' => [
+ 'field' => 'uid',
+ 'name table' => 'users_field_data',
+ 'name field' => 'name',
+ 'id' => 'argument_comment_user_uid',
+ 'no group by' => TRUE,
+ 'entity_type' => $entity_type_id,
+ 'entity_id' => $entity_type->getKey('id'),
+ ],
+ 'filter' => [
+ 'field' => 'uid',
+ 'name table' => 'users_field_data',
+ 'name field' => 'name',
+ 'id' => 'comment_user_uid',
+ 'entity_type' => $entity_type_id,
+ 'entity_id' => $entity_type->getKey('id'),
+ ],
+ ];
+
+ foreach ($fields as $field_name => $field) {
+ $data[$base_table][$field_name . '_cid'] = [
+ 'title' => t('Comments of the @entity_type using field: @field_name', $args + ['@field_name' => $field_name]),
+ 'help' => t('Relate all comments on the @entity_type. This will create 1 duplicate record for every comment. Usually if you need this it is better to create a comment view.', $args),
+ 'relationship' => [
+ 'group' => t('Comment'),
+ 'label' => t('Comments'),
+ 'base' => 'comment_field_data',
+ 'base field' => 'entity_id',
+ 'relationship field' => $entity_type->getKey('id'),
+ 'id' => 'standard',
+ 'extra' => [
+ [
+ 'field' => 'entity_type',
+ 'value' => $entity_type_id,
+ ],
+ [
+ 'field' => 'field_name',
+ 'value' => $field_name,
+ ],
+ ],
+ ],
+ ];
+ }
+ }
+ }
+}