public function DefaultConflictDiscovery::discoverConflictsContentEntity in Conflict 8.2

Discovers conflicts on content entities.

Parameters

\Drupal\conflict\Event\EntityConflictDiscoveryEvent: The entity conflict discovery event.

Overrides ConflictDiscoveryInterface::discoverConflictsContentEntity

File

src/ConflictDiscovery/DefaultConflictDiscovery.php, line 13

Class

DefaultConflictDiscovery

Namespace

Drupal\conflict\ConflictDiscovery

Code

public function discoverConflictsContentEntity(EntityConflictDiscoveryEvent $event) {

  /** @var \Drupal\Core\Entity\ContentEntityInterface $local_entity */
  $local_entity = $event
    ->getLocalEntity();

  /** @var \Drupal\Core\Entity\ContentEntityInterface $remote_entity */
  $remote_entity = $event
    ->getRemoteEntity();

  /** @var \Drupal\Core\Entity\ContentEntityInterface $base_entity */
  $base_entity = $event
    ->getBaseEntity();
  $langcode = $local_entity
    ->language()
    ->getId();
  $remote_entity = $remote_entity
    ->getTranslation($langcode);
  $base_entity = $base_entity
    ->getTranslation($langcode);

  // The revision metadata fields are updated constantly and they will always
  // cause conflicts, therefore we skip them here.
  // @see \Drupal\Core\Entity\ContentEntityForm::buildEntity().
  $skip_fields = array_flip($local_entity
    ->getEntityType()
    ->getRevisionMetadataKeys());

  // Iterate over the entity fields to find conflicting properties.
  foreach ($local_entity
    ->getFields() as $field_name => $field_items_local) {
    if (isset($skip_fields[$field_name])) {
      continue;
    }
    $field_definition = $field_items_local
      ->getFieldDefinition();

    // There could be no conflicts on read only fields.
    if ($field_definition
      ->isReadOnly()) {
      continue;
    }
    $field_items_remote = $remote_entity
      ->get($field_name);
    $field_items_base = $base_entity
      ->get($field_name);

    // Check for changes between the local and the remote entity versions.
    if (!$field_items_local
      ->equals($field_items_remote)) {

      // Check for changes between the remote and the base entity versions.
      if (!$field_items_remote
        ->equals($field_items_base)) {

        // Check for changes between the local and the base entity versions.
        $conflict_type = $field_items_local
          ->equals($field_items_base) ? ConflictTypes::CONFLICT_TYPE_REMOTE : ConflictTypes::CONFLICT_TYPE_LOCAL_REMOTE;
        $event
          ->addConflict($field_name, $conflict_type);
      }
    }
  }
}