Symfony Bundle integrating Consistence library with Doctrine ORM
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readme.md

Symfony Bundle integrating Consistence library with Doctrine ORM

This is a Symfony bundle providing integration for the standalone package consistence/consistence-doctrine, if you are not using Symfony, follow instructions there.

This bundle provides integration of Consistence value objects for Doctrine ORM so that you can use them in your entities.

For now, the only integration which is needed is for Enums, see the examples below.

Usage

Enums represent predefined set of values and of course, you will want to store these values in your database as well. Since Enums are objects and you only want to store the represented value, there has to be some mapping.

You can see it in this example where you want to store sex for your Users:

<?php

namespace Consistence\Doctrine\Example\User;

class Sex extends \Consistence\Enum\Enum
{

	public const FEMALE = 'female';
	public const MALE = 'male';

}

Now you can use the Sex enum in your User entity. There are two important things to notice:

  1. type="string_enum" in ORM\Column - this will be used for mapping the value to your database, that means if you have a string based enum (see values in Sex), use string_enum

You can specify any other parameters for ORM\Column as you would usually (nullability, length...).

There is also integer_enum, float_enum and boolean_enum which can be used respectively for their types.

  1. @Enum(class=Sex::class) - this will be used for reconstructing the Sex enum object when loading the value back from database

The class annotation parameter uses the same namespace resolution process as other Doctrine annotations, so it is practically the same as when you specify a targetEntity in associations mapping.

<?php

namespace Consistence\Doctrine\Example\User;

use Consistence\Doctrine\Enum\EnumAnnotation as Enum;

use Doctrine\ORM\Mapping as ORM;

/**
 * @ORM\Entity()
 */
class User extends \Consistence\ObjectPrototype
{

	// ...

	/**
	 * @Enum(class=Sex::class)
	 * @ORM\Column(type="string_enum", nullable=true)
	 * @var \Consistence\Doctrine\Example\User\Sex|null
	 */
	private $sex;

	// ...

	public function __construct(
		// ...
		Sex $sex = null
		// ...
	)
	{
		// ...
		$this->sex = $sex;
		// ...
	}

	// ...

}

Now everything is ready to be used, when you call flush, only female will be saved:

<?php

namespace Consistence\Doctrine\Example\User;

$user = new User(
	// ...
	Sex::get(Sex::FEMALE)
	// ...
);
/** @var \Doctrine\ORM\EntityManager $entityManager */
$entityManager->persist($user);

// when persisting User::$sex to database, `female` will be saved
$entityManager->flush();

And when you retrieve the entity back from database, you will receive the Sex enum object again:

<?php

namespace Consistence\Doctrine\Example\User;

/** @var \Doctrine\ORM\EntityManager $entityManager */
$user = $entityManager->find(User::class, 1);
var_dump($user->getSex());

/*

class Consistence\Doctrine\Example\User\Sex#5740 (1) {
  private $value =>
  string(6) "female"
}

*/

This means that the objects API is symmetrical (you get the same type as you set) and you can start benefiting from Enums advantages such as being sure, that what you get is already a valid value and having the possibility to define methods on top of the represented values.

Configuration

You can override services used internally, for example if you want to use a more effective cache in production (which is recommended), you can provide custom instance with an alias:

services:
    mycache:
        class: Doctrine\Common\Cache\FilesystemCache
        arguments:
            - '%kernel.cache_dir%/mycache'

    consistence.doctrine.enum.enum_fields_cache: '@mycache'

Installation

  1. Install package consistence/consistence-doctrine-symfony with Composer:
composer require consistence/consistence-doctrine-symfony
  1. Register the bundle in your application:
// config/bundles.php
return [
	// ...
	Consistence\Doctrine\SymfonyBundle\ConsistenceDoctrineBundle::class => ['all' => true],
];

That's all, you are good to go!