function core_field_views_data

Implements hook_field_views_data().

The function implements the hook in behalf of 'core' because it adds a relationship and a reverse relationship to entity_reference field type, which is provided by core.

File

core/modules/views/views.views.inc, line 772

Code

function core_field_views_data(FieldStorageConfigInterface $field_storage) {
    $data = views_field_default_views_data($field_storage);
    // The code below only deals with the Entity reference field type.
    if ($field_storage->getType() != 'entity_reference') {
        return $data;
    }
    $entity_type_manager = \Drupal::entityTypeManager();
    $entity_type_id = $field_storage->getTargetEntityTypeId();
    
    /** @var \Drupal\Core\Entity\Sql\DefaultTableMapping $table_mapping */
    $table_mapping = $entity_type_manager->getStorage($entity_type_id)
        ->getTableMapping();
    foreach ($data as $table_name => $table_data) {
        // Add a relationship to the target entity type.
        $target_entity_type_id = $field_storage->getSetting('target_type');
        $target_entity_type = $entity_type_manager->getDefinition($target_entity_type_id);
        $entity_type_id = $field_storage->getTargetEntityTypeId();
        $entity_type = $entity_type_manager->getDefinition($entity_type_id);
        $target_base_table = $target_entity_type->getDataTable() ?: $target_entity_type->getBaseTable();
        $field_name = $field_storage->getName();
        // Provide a relationship for the entity type with the entity reference
        // field.
        $args = [
            '@label' => $target_entity_type->getLabel(),
            '@field_name' => $field_name,
        ];
        $data[$table_name][$field_name]['relationship'] = [
            'title' => t('@label referenced from @field_name', $args),
            'label' => t('@field_name: @label', $args),
            'group' => $entity_type->getLabel(),
            'help' => t('Appears in: @bundles.', [
                '@bundles' => implode(', ', $field_storage->getBundles()),
            ]),
            'id' => 'standard',
            'base' => $target_base_table,
            'entity type' => $target_entity_type_id,
            'base field' => $target_entity_type->getKey('id'),
            'relationship field' => $field_name . '_target_id',
        ];
        // Provide a reverse relationship for the entity type that is referenced by
        // the field.
        $args['@entity'] = $entity_type->getLabel();
        $args['@label'] = $target_entity_type->getSingularLabel();
        $pseudo_field_name = 'reverse__' . $entity_type_id . '__' . $field_name;
        $data[$target_base_table][$pseudo_field_name]['relationship'] = [
            'title' => t('@entity using @field_name', $args),
            'label' => t('@field_name', [
                '@field_name' => $field_name,
            ]),
            'group' => $target_entity_type->getLabel(),
            'help' => t('Relate each @entity with a @field_name set to the @label.', $args),
            'id' => 'entity_reverse',
            'base' => $entity_type->getDataTable() ?: $entity_type->getBaseTable(),
            'entity_type' => $entity_type_id,
            'base field' => $entity_type->getKey('id'),
            'field_name' => $field_name,
            'field table' => $table_mapping->getDedicatedDataTableName($field_storage),
            'field field' => $field_name . '_target_id',
            'join_extra' => [
                [
                    'field' => 'deleted',
                    'value' => 0,
                    'numeric' => TRUE,
                ],
            ],
        ];
    }
    return $data;
}