README

Adds ability do declare entity discriminator map using a configuration.

Installation

$ composer require facile-it/doctrine-dynamic-discriminator-map

Register the listener on Doctrine Event Manager

Example:

<?php

use Doctrine\Common\EventManager;
use Doctrine\ORM\EntityManager;
use Doctrine\ORM\Tools\Setup;
use Facile\DoctrineDDM\Factory\MetadataConfigFactory;
use Facile\DoctrineDDM\MetadataListener;
use My\Namespace\Entity;

$metadataConfigFactory = new MetadataConfigFactory();
// discriminator map configuration
$metadataConfig = $metadataConfigFactory->createMetadata([
    Entity\Person::class => [ // parent class
        'discriminator_map' => [
            'teacher' => Entity\Teacher::class, // child class
            'student' => Entity\Student::class, // child class
        ],
    ],
]);

$metadataListener = new MetadataListener($metadataConfig);

$eventManager = new EventManager();
$eventManager->addEventSubscriber($metadataListener);

$config = Setup::createAnnotationMetadataConfiguration(
    [__DIR__ . '/src'],
    true,
    null,
    null,
    false
);
$connection = [
    'driver' => 'pdo_sqlite',
    'memory' => true,
];

$entityManager = EntityManager::create($connection, $config, $eventManager);

Entities

Create the parent entity:

<?php

namespace My\Namespace\Entity;

use Doctrine\ORM\Mapping as ORM;

/**
 * @ORM\Entity
 * @ORM\Table(name="person")
 * @ORM\InheritanceType("SINGLE_TABLE")
 * @ORM\DiscriminatorColumn(name="type", type="string")
 * @ORM\DiscriminatorMap({"person" = "Person"})
 */
class Person
{
    // ...
}

Then you can declare the children entities:

<?php

namespace My\Namespace\Entity;

use Doctrine\ORM\Mapping as ORM;

/**
 * @ORM\Entity
 */
class Student extends Person
{
    // ...
}

/**
 * @ORM\Entity
 */
class Teacher extends Person
{
    // ...
}

That's it!

Frameworks Integration

Invokable factories

Facile\DoctrineDDM\Factory\MetadataConfigFactory and Facile\DoctrineDDM\Factory\MetadataListenerFactory have an __invoke() method that can be used with Interop\Container\ContainerInterface.

Facile\DoctrineDDM\Factory\MetadataConfigFactory will check for a config key where expects an array configuration.
Then it will check for Facile\DoctrineDDM\Factory\MetadataConfigFactory::CONFIG_KEY key where it expects the discriminator map configuration and returns a Facile\DoctrineDDM\Configuration\Metadata instance.

Facile\DoctrineDDM\Factory\MetadataListenerFactory will check for a service named Facile\DoctrineDDM\Configuration\Metadata (the configuration class) then will return a configured Facile\DoctrineDDM\MetadataListener instance.

Zend Framework and Zend Expressive

With DoctrineORMModule:

use Facile\DoctrineDDM\MetadataListener;
use Facile\DoctrineDDM\Factory\MetadataConfigFactory;
use Facile\DoctrineDDM\Factory\MetadataListenerFactory;
use Facile\DoctrineDDM\Configuration\Metadata;
use My\Namespace\Entity;

return [
    'service_manager' => [ // or "dependencies" for zend-expressive
        'factories' => [
            // register the configuration factory
            Metadata::class => MetadataConfigFactory::class,
            // register the metadata listener factory
            MetadataListener::class => MetadataListenerFactory::class,
        ],
    ],
    'doctrine' => [
        'eventmanager' => [
            'orm_default' => [
                'subscribers' => [
                    // register MetadataListener
                    MetadataListener::class,
                ],
            ],
        ],
    ],
    // declare discriminator map configuration used by MetadataConfigFactory
    MetadataConfigFactory::class => [
        Entity\Person::class => [ // parent class
            'discriminator_map' => [
                'teacher' => Entity\Teacher::class, // child class
                'student' => Entity\Student::class, // child class
            ],
        ],
    ],
];