public FieldStorageDefinitionInterface::getSchema()
Returns the field schema.
Note that this method returns an empty array for computed fields which have no schema.
Return value
array[] The field schema, as an array of key/value pairs in the format returned by \Drupal\Core\Field\FieldItemInterface::schema():
- columns: An array of Schema API column specifications, keyed by column name. This specifies what comprises a single value for a given field. No assumptions should be made on how storage backends internally use the original column name to structure their storage.
- indexes: An array of Schema API index definitions. Some storage backends might not support indexes.
- unique keys: An array of Schema API unique key definitions. Some storage backends might not support unique keys.
- foreign keys: An array of Schema API foreign key definitions. Note, however, that depending on the storage backend specified for the field, the field data is not necessarily stored in SQL.
File
- core/lib/Drupal/Core/Field/FieldStorageDefinitionInterface.php, line 252
Class
- FieldStorageDefinitionInterface
- Defines an interface for entity field storage definitions.
Namespace
Drupal\Core\Field
Code
public function getSchema();
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