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How to validate the uniqueness of multiple columns

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How to validate the uniqueness of multiple columns

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How-tos

Yii version unchanged

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unique, unique validator, uniqueness validator, multiple unique columns, multiple primary keys

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I am going to show you an effective way to validate the uniqueness of multiple columns. In the following example we have 3 columns, the combination of which need to be unique: id, category and language.


```php
class Post extends CActiveRecord
{
[...]
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Viewed: 18 386 times
Version: 1.1
Category: How-tos
Tags: multiple primary keys, multiple unique columns, unique, unique validator, uniqueness validator
Written by: oligalma
Last updated by: oligalma
Created on: Jan 15, 2015
Last updated: 8 years ago
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