public function DependencyFieldMapGenerator::getReferentialFieldMap in Entity Reference Integrity 8

A field map keyed by the entity type being targeted by reference fields.

The referential field map is in the format of:

entity_type_id_being_referenced: source_entity_type_id:

• referencing_field_a
• referencing_field_b

Return value

array A field map.

Overrides DependencyFieldMapGeneratorInterface::getReferentialFieldMap

1 call to DependencyFieldMapGenerator::getReferentialFieldMap()

DependencyFieldMapGenerator::getReferencingFields in src/DependencyFieldMapGenerator.php

Get the segment of the field map for a specific entity type ID.

File

src/DependencyFieldMapGenerator.php, line 55

Class

DependencyFieldMapGenerator

Create a map of reference fields.

Namespace

Drupal\entity_reference_integrity

Code

public function getReferentialFieldMap() {
  $referential_field_map = [];
  foreach ($this->entityFieldManager
    ->getFieldMapByFieldType($this->fieldType) as $source_entity_type_id => $fields) {
    $source_entity_storage_definitions = $this->entityFieldManager
      ->getFieldStorageDefinitions($source_entity_type_id);
    $source_entity_type = $this->entityTypeManager
      ->getDefinition($source_entity_type_id);
    foreach ($fields as $field_name => $field_data) {
      $field_storage_definition = !empty($source_entity_storage_definitions[$field_name]) ? $source_entity_storage_definitions[$field_name] : FALSE;

      // Some fields like computed fields do not show up in the return value
      // of getFieldStorageDefinitions.
      if (!$field_storage_definition) {
        continue;
      }

      // Fields with custom storage like term parents can't be used with
      // entity query.
      if ($field_storage_definition
        ->hasCustomStorage()) {
        continue;
      }

      // Don't query against revision metadata fields.
      if (in_array($field_name, $source_entity_type
        ->getRevisionMetadataKeys())) {
        continue;
      }
      $target_entity_type_id = $source_entity_storage_definitions[$field_name]
        ->getSetting($this->targetEntitySettingsKey);
      $referential_field_map[$target_entity_type_id][$source_entity_type_id][] = $field_name;
    }
  }
  return $referential_field_map;
}