function EntityReferenceTranslationDeriver::getDerivativeDefinitions

Overrides DeriverBase::getDerivativeDefinitions

File

core/modules/migrate_drupal/src/Plugin/migrate/EntityReferenceTranslationDeriver.php, line 93

Class

EntityReferenceTranslationDeriver

Deriver for entity reference field translations.

Namespace

Code

public function getDerivativeDefinitions($base_plugin_definition) {
    // Get all entity reference fields.
    $field_map = $this->entityFieldManager
        ->getFieldMapByFieldType('entity_reference');
    foreach ($field_map as $entity_type => $fields) {
        foreach ($fields as $field_name => $field) {
            foreach ($field['bundles'] as $bundle) {
                $field_definitions = $this->entityFieldManager
                    ->getFieldDefinitions($entity_type, $bundle);
                $target_type = $field_definitions[$field_name]->getSetting('target_type');
                // If the field's target type is not supported, skip it.
                if (!array_key_exists($target_type, $base_plugin_definition['target_types'])) {
                    continue;
                }
                // Key derivatives by entity types and bundles.
                $derivative_key = $entity_type . '__' . $bundle;
                $derivative = $base_plugin_definition;
                $entity_type_definition = $this->entityTypeManager
                    ->getDefinition($entity_type);
                // Set the migration label.
                $derivative['label'] = $this->t('@label (@derivative)', [
                    '@label' => $base_plugin_definition['label'],
                    '@derivative' => $derivative_key,
                ]);
                // Set the source plugin.
                $derivative['source']['plugin'] = 'content_entity' . PluginBase::DERIVATIVE_SEPARATOR . $entity_type;
                if ($entity_type_definition->hasKey('bundle')) {
                    $derivative['source']['bundle'] = $bundle;
                }
                // Set the process pipeline.
                $id_key = $entity_type_definition->getKey('id');
                $derivative['process'][$id_key] = $id_key;
                if ($entity_type_definition->isRevisionable()) {
                    $revision_key = $entity_type_definition->getKey('revision');
                    $derivative['process'][$revision_key] = $revision_key;
                }
                if ($entity_type_definition->isTranslatable()) {
                    $langcode_key = $entity_type_definition->getKey('langcode');
                    $derivative['process'][$langcode_key] = $langcode_key;
                }
                // Set the destination plugin.
                $derivative['destination']['plugin'] = 'entity' . PluginBase::DERIVATIVE_SEPARATOR . $entity_type;
                if ($entity_type_definition->hasKey('bundle')) {
                    $derivative['destination']['default_bundle'] = $bundle;
                }
                if ($entity_type_definition->isTranslatable()) {
                    $derivative['destination']['translations'] = TRUE;
                }
                // Allow overwriting the entity reference field so we can update its
                // values with the ones found in the mapping table.
                $derivative['destination']['overwrite_properties'][$field_name] = $field_name;
                // Add the entity reference field to the process pipeline.
                $derivative['process'][$field_name] = [
                    'plugin' => 'sub_process',
                    'source' => $field_name,
                    'process' => [
                        'translation_target_id' => [
                            [
                                'plugin' => 'migration_lookup',
                                'source' => 'target_id',
                                'migration' => $base_plugin_definition['target_types'][$target_type],
                                'no_stub' => TRUE,
                            ],
                            [
                                'plugin' => 'skip_on_empty',
                                'method' => 'process',
                            ],
                            [
                                'plugin' => 'extract',
                                'index' => [
                                    0,
                                ],
                            ],
                        ],
                        'target_id' => [
                            [
                                'plugin' => 'null_coalesce',
                                'source' => [
                                    '@translation_target_id',
                                    'target_id',
                                ],
                            ],
                        ],
                    ],
                ];
                if (!isset($this->derivatives[$derivative_key])) {
                    // If this is a new derivative, add it to the returned derivatives.
                    $this->derivatives[$derivative_key] = $derivative;
                }
                else {
                    // If this is an existing derivative, it means this bundle has more
                    // than one entity reference field. In that case, we only want to add
                    // the field to the process pipeline and make it overwritable.
                    $this->derivatives[$derivative_key]['process'] += $derivative['process'];
                    $this->derivatives[$derivative_key]['destination']['overwrite_properties'] += $derivative['destination']['overwrite_properties'];
                }
            }
        }
    }
    return $this->derivatives;
}