Class IsUnique
Checks that a list of fields from an entity are unique in the table
Properties summary
Method Summary
-
__construct() public
Constructor. -
__invoke() public
Performs the uniqueness check -
_alias() protected
Add a model alias to all the keys in a set of conditions.
Method Detail
__construct() public ¶
__construct( array $fields , array $options [] )
Constructor.
Options
allowMultipleNullsSet to false to disallow multiple null values in multi-column unique rules. By default this istrueto emulate how SQL UNIQUE keys work.
Parameters
- array $fields
- The list of fields to check uniqueness for
- array $options optional []
- The additional options for this rule.
__invoke() public ¶
__invoke( Cake\Datasource\EntityInterface $entity , array $options )
Performs the uniqueness check
Parameters
-
Cake\Datasource\EntityInterface$entity The entity from where to extract the fields where the
repositorykey is required.- array $options
- Options passed to the check,
Returns
boolean
_alias() protected ¶
_alias( string $alias , array $conditions , boolean $multipleNulls )
Add a model alias to all the keys in a set of conditions.
Null values will be omitted from the generated conditions,
as SQL UNIQUE indexes treat NULL != NULL
Parameters
- string $alias
- The alias to add.
- array $conditions
- The conditions to alias.
- boolean $multipleNulls
- Whether or not to allow multiple nulls.
Returns
array