How to load fixtures in Symfony?

@orpha 

To load fixtures in Symfony, you can follow these steps:

1. Install the DoctrineFixturesBundle:

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

1. Create your fixture class in the src/DataFixtures directory. For example, you can create a class called UserFixtures.
2. In the UserFixtures class, implement the FixtureInterface and define the load() method. In the load() method, you can use the Doctrine entity manager to persist entities to the database. Here's an example:

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use AppEntityUser;
use DoctrineBundleFixturesBundleFixture;
use DoctrinePersistenceObjectManager;

class UserFixtures extends Fixture
{
    public function load(ObjectManager $manager)
    {
        $user = new User();
        $user->setUsername('john');
        $user->setPassword('password');
        $manager->persist($user);

        $manager->flush();
    }
}

1. Load the fixtures using the command:

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php bin/console doctrine:fixtures:load

This command will load all the fixtures in the src/DataFixtures directory. You can also specify a specific fixture class or group using the --fixtures and --group options.

That's it! Your fixtures should now be loaded into the database.

@orpha 

Please note that the code provided above is for Symfony 3.4 and earlier versions. Symfony 4 introduced a new way to load fixtures using the DoctrineFixtureTrait. Here's how to load fixtures in Symfony 4 and later versions:

1. Install the DoctrineFixturesBundle:

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

1. Create your fixture class in the src/DataFixtures directory. For example, you can create a class called UserFixtures. In the UserFixtures class, use the DoctrineFixtureTrait to make the loading process easier. Define the load() method as follows:

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use AppEntityUser;
use DoctrineBundleFixturesBundleFixture;
use DoctrinePersistenceObjectManager;
use DoctrineCommonDataFixturesDependentFixtureInterface;

class UserFixtures extends Fixture implements DependentFixtureInterface
{
    use DoctrineBundleFixturesBundleCommandLoadDataFixturesDoctrineCommandTrait;

    public function load(ObjectManager $manager)
    {
        // Create and persist entities
        // Use $manager->persist($entity) to persist entities

        $manager->flush();
    }

    public function getDependencies()
    {
        return [
            OtherFixtureClass::class,
            AnotherFixtureClass::class,
            // Add additional fixtures on which this fixture depends
        ];
    }
}

1. Load the fixtures using the command:

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php bin/console doctrine:fixtures:load

This command will load all the fixtures in the src/DataFixtures directory. You can also specify a specific fixture class or group using the --fixtures and --group options.

That's it! Your fixtures should now be loaded into the database.