protected SqlContentEntityStorageSchema::addSharedTableFieldUniqueKey(FieldStorageDefinitionInterface $storage_definition, &$schema)
Adds a unique key for the specified field to the given schema definition.
Also adds a 'not null' constraint, because many databases do not reliably support unique keys on null columns.
Parameters
\Drupal\Core\Field\FieldStorageDefinitionInterface $storage_definition: The storage definition of the field to which to add a unique key.
array $schema: A reference to the schema array to be updated.
File
- core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorageSchema.php, line 1671
Class
- SqlContentEntityStorageSchema
- Defines a schema handler that supports revisionable, translatable entities.
Namespace
Drupal\Core\Entity\Sql
Code
1 2 3 4 5 6 | protected function addSharedTableFieldUniqueKey(FieldStorageDefinitionInterface $storage_definition, &$schema) { $name = $storage_definition->getName(); $real_key = $this->getFieldSchemaIdentifierName($storage_definition->getTargetEntityTypeId(), $name); $schema['unique keys'][$real_key] = array($name); $schema['fields'][$name]['not null'] = TRUE;} |
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