README

A Yii2 behavior for automatically generating and formatting UUIDs for ActiveRecord models.

Features

• Automatically generates UUIDs for new records
• Supports both PHP-generated and MySQL-generated UUIDs
• Configurable UUID format (with or without dashes)
• Handles existing UUIDs and ensures proper formatting
• Optional UUID generation on record updates

Installation

The preferred way to install this extension is through composer.

composer require laith-zraikat/yii2-uuid-behavior

Usage

Attach the behavior to your ActiveRecord model:

use LaithZraikat\UUID\UUIDBehavior;

class MyModel extends \yii\db\ActiveRecord
{
    public function behaviors()
    {
        return [
            [
                'class' => UUIDBehavior::class,
                'attribute' => 'uuid', // the attribute that will store the UUID
                'method' => UUIDBehavior::METHOD_MYSQL, // or UUIDBehavior::METHOD_PHP
                'keepDashes' => true, // whether to keep dashes in the UUID
                'enableOnUpdate' => false, // whether to generate UUID on update
            ],
        ];
    }
}

Configuration Options

UUID Generation Methods

MySQL Method (METHOD_MYSQL)

Uses MySQL's UUID() function to generate UUIDs. This method:

• Has better performance and uniqueness guarantees
• Requires a database call to generate the UUID
• The UUID is only available after the record is saved

PHP Method (METHOD_PHP)

Generates UUIDs using PHP's mt_rand() function. This method:

• Makes the UUID available before saving the record
• Works with any database backend
• Slightly less performant than the MySQL method

UUID Formatting

The behavior supports two UUID formats:

1. Standard format (with dashes): xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
2. Compact format (without dashes): xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

Use the keepDashes option to control the format.

License

This project is licensed under the MIT License - see the LICENSE file for details.