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