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DoctrineFixturesBundle

2.4 version

DoctrineFixturesBundle

Fixtures are used to load a "fake" set of data into a database that can then be used for testing or to help give you some interesting data while you're developing your application. This bundle makes creating fixtures easy, and supports the ORM (MySQL, PostgreSQL, SQLite, etc.).

Installation

Open a command console, enter your project directory and run the following command to download the latest stable version of this bundle:

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composer require --dev doctrine/doctrine-fixtures-bundle

If you're not using Symfony Flex (i.e. Symfony 3 and lower), you will also need to enable the bundle in your AppKernel class:

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// app/AppKernel.php

// ...
// registerBundles()
if (in_array($this->getEnvironment(), array('dev', 'test'), true)) {
    // ...
    $bundles[] = new Doctrine\Bundle\FixturesBundle\DoctrineFixturesBundle();
}

Writing Fixtures

Data fixtures are PHP classes where you create objects and persist them to the database.

Imagine that you want to add some Product objects to your database. No problem! Just create a fixtures class and start adding products!

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// src/DataFixtures/AppFixtures.php
namespace App\DataFixtures;

use App\Entity\Product;
use Doctrine\Bundle\FixturesBundle\Fixture;
use Doctrine\Common\Persistence\ObjectManager;

class AppFixtures extends Fixture
{
    public function load(ObjectManager $manager)
    {
        // create 20 products! Bam!
        for ($i = 0; $i < 20; $i++) {
            $product = new Product();
            $product->setName('product '.$i);
            $product->setPrice(mt_rand(10, 100));
            $manager->persist($product);
        }

        $manager->flush();
    }
}

Tip

You can also create multiple fixtures classes. See Splitting Fixtures into Separate Files.

Loading Fixtures

Once your fixtures have been written, load them by executing this command:

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# when using the ORM
$ php bin/console doctrine:fixtures:load

Caution

By default the load command purges the database, removing all data from every table. To append your fixtures' data add the --append option.

This command looks for all services tagged with doctrine.fixture.orm. If you're using the default service configuration, any class that implements ORMFixtureInterface (for example, those extending from Fixture) will automatically be registered with this tag.

To see other options for the command, run:

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$ php bin/console doctrine:fixtures:load --help

Accessing Services from the Fixtures

In some cases you may need to access your application's services inside a fixtures class. No problem! Your fixtures class is a service, so you can use normal dependency injection:

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// src/DataFixtures/AppFixtures.php
use Symfony\Component\Security\Core\Encoder\UserPasswordEncoderInterface;

// ...
private $encoder;

public function __construct(UserPasswordEncoderInterface $encoder)
{
    $this->encoder = $encoder;
}

// ...
public function load(ObjectManager $manager)
{
    $user = new User();
    $user->setUsername('admin');

    $password = $this->encoder->encodePassword($user, 'pass_1234');
    $user->setPassword($password);

    $manager->persist($user);
    $manager->flush();
}

You can also access the container via the $this->container property. But remember that not all services (i.e. private services) can be accessed directly via the container.

Splitting Fixtures into Separate Files

In most applications, creating all your fixtures in just one class is fine. This class may end up being a bit long, but it's worth it because having one file helps keeping things simple.

If you do decide to split your fixtures into separate files, Symfony helps you solve the two most common issues: sharing objects between fixtures and loading the fixtures in order.

Sharing Objects between Fixtures

When using multiple fixtures files, you can reuse PHP objects across different files thanks to the object references. Use the addReference() method to give a name to any object and then, use the getReference() method to get the exact same object via its name:

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// src/DataFixtures/UserFixtures.php
// ...
class UserFixtures extends Fixture
{
    public function load(ObjectManager $manager)
    {
        $userAdmin = new User('admin', 'pass_1234');
        $manager->persist($userAdmin);
        $manager->flush();

        // other fixtures can get this object using the 'admin-user' name
        $this->addReference('admin-user', $userAdmin);
    }
}

// src/DataFixtures/GroupFixtures.php
// ...
class GroupFixtures extends Fixture
{
    public function load(ObjectManager $manager)
    {
        $userGroup = new Group('administrators');
        // this reference returns the User object created in UserFixtures
        $userGroup->addUser($this->getReference('admin-user'));

        $manager->persist($userGroup);
        $manager->flush();
    }
}

The only caveat of using references is that fixtures need to be loaded in a certain order (in this example, if the Group fixtures are load before the User fixtures, you'll see an error). By default Doctrine loads the fixture files in alphabetical order, but you can control their order as explained in the next section.

Loading the Fixture Files in Order

Instead of defining the exact order in which all fixture files must be loaded, Doctrine uses a smarter approach to ensure that some fixtures are loaded before others. Implement the DependentFixtureInterface and add a new getDependencies() method to your fixtures class. This will return an array of the fixture classes that must be loaded before this one:

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// src/DataFixtures/UserFixtures.php
namespace App\DataFixtures;

// ...
class UserFixtures extends Fixture
{
    public function load(ObjectManager $manager)
    {
        // ...
    }
}

// src/DataFixtures/GroupFixtures.php
namespace App\DataFixtures;
// ...
use App\DataFixtures\UserFixtures;
use Doctrine\Common\DataFixtures\DependentFixtureInterface;

class GroupFixtures extends Fixture implements DependentFixtureInterface
{
    public function load(ObjectManager $manager)
    {
        // ...
    }

    public function getDependencies()
    {
        return array(
            UserFixtures::class,
        );
    }
}

This work, including the code samples, is licensed under a Creative Commons BY-SA 3.0 license.