Class IsUnique

Checks that a list of fields from an entity are unique in the table

Namespace: Cake\ORM\Rule
Location: ORM/Rule/IsUnique.php

Properties summary

  • $_fields protected
    array
    The list of fields to check
  • $_options protected
    array
    The options to use.

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()source public 

__construct( array $fields , array $options [] )

Constructor.

Options

  • allowMultipleNulls Set to false to disallow multiple null values in multi-column unique rules. By default this is true to 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()source 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 repository key is required.

array $options
Options passed to the check,

Returns

boolean

_alias()source 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

Properties detail

$_fieldssource

protected array

The list of fields to check

$_optionssource

protected array

The options to use.

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https://api.cakephp.org/3.4/class-Cake.ORM.Rule.IsUnique.html