function comment_alter_entity_extra_field_info in Comment Alter 8

Implements hook_entity_extra_field_info().

File

./comment_alter.module, line 584

Allows to alter entities from comment form.

Code

function comment_alter_entity_extra_field_info() {
  $extra = [];
  $comment_bundles = [];
  foreach (\Drupal::entityManager()
    ->getDefinitions() as $entity_type => $entity_definition) {

    // Handle only non-comment content entity types.
    if (!$entity_definition instanceof Drupal\Core\Entity\ContentEntityTypeInterface || $entity_type == 'comment') {
      continue;
    }

    // Store the comment type or the comment bundle using FieldStorageDefinition
    // associated with this entity type, which can be accessed for any of its
    // bundle using the field machine name.
    $field_storage_definitions = \Drupal::entityManager()
      ->getFieldStorageDefinitions($entity_type);
    foreach ($field_storage_definitions as $field_name => $field_storage_definition) {
      if (!$field_storage_definition instanceof Drupal\Core\Field\BaseFieldDefinition && $field_storage_definition
        ->getType() == 'comment') {
        $comment_bundles[$entity_type][$field_name] = $field_storage_definition
          ->getSetting('comment_type');
        $weight[$comment_bundles[$entity_type][$field_name]] = 0;
      }
    }

    // No need to further processing if there are no comment fields on this
    // content entity bundle.
    if (empty($comment_bundles[$entity_type])) {
      continue;
    }
    foreach (entity_get_bundles($entity_type) as $bundle => $bundle_info) {

      // Retrieve the list of comment_alterable_fields for this entity_type's
      // current bundle.
      $comment_alterable_fields = comment_alter_get_alterable_fields($entity_type, $bundle);

      // Skip to the next bundle if there are no comment_alterable_fields.
      if (empty($comment_alterable_fields)) {
        continue;
      }

      // If this content entity type and bundle has any comment_alterable
      // field, then _ALL_ the comment types (bundles) should have the extra
      // field info on them (about _ALL_ these comment_alterable fields). But:
      // only those comment types (bundles) should have this info, which are
      // attached to this content entity type and bundle.
      // To retrieve the list of comment types (bundles) attached to this
      // entity type and bundle, we'll use the above created comment_bundles
      // array. So, we need to store all the comment fields for this entity type
      // and bundle in order to get comment bundle for the corresponding field.
      $comment_fields = [];
      $field_definitions = \Drupal::entityManager()
        ->getFieldDefinitions($entity_type, $bundle);
      foreach ($field_definitions as $field_name => $field_definition) {
        if ($field_definition
          ->getType() == 'comment') {
          $comment_fields[] = $field_name;
        }
      }

      // Now that we have all the info needed, let's build the extra field
      // info array.
      foreach ($comment_fields as $comment_field) {
        foreach ($comment_alterable_fields as $field_name) {
          $field = FieldConfig::loadByName($entity_type, $bundle, $field_name);
          $extra['comment'][$comment_bundles[$entity_type][$comment_field]]['form'][$entity_type . '_' . $bundle . '_' . 'comment_alter_' . $field_name] = [
            'label' => t('Comment alter: %type . %bundle : %label', [
              '%type' => $entity_type,
              '%bundle' => $bundle,
              '%label' => $field
                ->getLabel(),
            ]),
            'description' => $field
              ->getDescription(),
            'weight' => $weight[$comment_bundles[$entity_type][$comment_field]],
          ];
          $weight[$comment_bundles[$entity_type][$comment_field]]++;
        }
        $extra['comment'][$comment_bundles[$entity_type][$comment_field]]['display']['comment_alter'] = [
          'label' => t('Comment changes'),
          'description' => t('Changes made to the parent node\'s fields in this comment.'),
          'weight' => -1,
        ];
      }
    }
  }
  return $extra;
}