Is it possible to set a unique validation rule for 2 fields?

Question

Yii

There is a table of dictionary elements (id, dictionary id, key, value). Is it possible to set a validation rule at the framework level for the uniqueness of the id-dictionary + key-element binding?

Answer 1

[
    [
        'id_словаря', 
        'key'
    ], 
    'unique', 
    'targetAttribute' => [
        'id_словаря', 
        'key'
    ]
],

Answer 2

I can offer a bike. Store in the md5 database (id.key) and check it for uniqueness.

Answer 3

Good afternoon.
[['id_словаря', 'key'], 'unique']

Answer 4

The validator has two interesting properties:
targetAttribute and comboNotUnique.
Read the help for these attributes and see the validator source code.