Same name in other branches

1. 9 core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorageSchema.php \Drupal\Core\Entity\Sql\SqlContentEntityStorageSchema::getFieldForeignKeys()
2. 10 core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorageSchema.php \Drupal\Core\Entity\Sql\SqlContentEntityStorageSchema::getFieldForeignKeys()
3. 11.x core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorageSchema.php \Drupal\Core\Entity\Sql\SqlContentEntityStorageSchema::getFieldForeignKeys()

Gets field foreign keys.

Parameters

string $field_name: The name of the field.

array $field_schema: The schema of the field.

string[] $column_mapping: A mapping of field column names to database column names.

Return value

array The schema definition for the foreign keys.

1 call to SqlContentEntityStorageSchema::getFieldForeignKeys()

SqlContentEntityStorageSchema::getSharedTableFieldSchema in core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorageSchema.php

Gets the schema for a single field definition.

File

core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorageSchema.php, line 1215

Class

SqlContentEntityStorageSchema

Defines a schema handler that supports revisionable, translatable entities.

Namespace

Drupal\Core\Entity\Sql

Code

protected function getFieldForeignKeys($field_name, array $field_schema, array $column_mapping) {
    $foreign_keys = [];
    foreach ($field_schema['foreign keys'] as $specifier => $specification) {
        // To avoid clashes with entity-level foreign keys we use
        // "{$entity_type_id}_field__" as a prefix instead of just
        // "{$entity_type_id}__". We additionally namespace the specifier by the
        // field name to avoid clashes when multiple fields of the same type are
        // added to an entity type.
        $entity_type_id = $this->entityType
            ->id();
        $real_specifier = "{$entity_type_id}_field__{$field_name}__{$specifier}";
        $foreign_keys[$real_specifier]['table'] = $specification['table'];
        foreach ($specification['columns'] as $column => $referenced) {
            $foreign_keys[$real_specifier]['columns'][$column_mapping[$column]] = $referenced;
        }
    }
    return $foreign_keys;
}

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