README

This bundle provides integration of the MongoDB library into Symfony. It is designed as a lightweight alternative to the Doctrine MongoDB ODM, providing only an integration to interact with MongoDB without providing all features of an ODM.

Installation

Install the bundle with composer:

composer require mongodb/symfony-bundle

If you have symfony/flex installed, the bundle is automatically enabled. Otherwise, you need to enable it manually by adding it to the bundles.php file:

// config/bundles.php

<?php

return [
    // ...
    MongoDB\Bundle\MongoDBBundle::class => ['all' => true],
];

Configuration

Configuration is done in the config/packages/mongodb.yaml file. To get started, you need to configure at least one client:

# config/packages/mongodb.yaml
mongodb:
  clients:
    default: 'mongodb://localhost:27017'

The id is used to reference the client in the service container. The uri is the connection string to connect to. For security reasons, it is recommended to read this value from your local environment and referencing it through an environment variable in the container:

mongodb:
  clients:
    default: '%env(MONGODB_URI)%'

You can also specify additional options for the client:

mongodb:
  clients:
    default:
      uri: '%env(MONGODB_URI)%'
      default_database: #...
      uri_options: #...
      driver_options: #...

The uri_options and driver_options are passed directly to the underlying MongoDB driver. See the documentation for available options.

If you want to configure multiple clients, you can do so by adding additional clients to the configuration:

mongodb:
  default_client: default
  clients:
    default: '%env(MONGODB_URI)%'
    second: '%env(SECOND_MONGODB_URI)%'

Note

If you add multiple clients, you need to specify the default_client option to specify which client should be used as default!

Client Usage

For each client, a service is registered in the container with the mongodb.client.{id} service id.

Note

The MongoDB driver only establishes a connection to MongoDB when it is actually needed, so a client can be injected into services without causing network traffic.

With autowiring enabled, you can inject the client into your services like this:

use MongoDB\Client;

class MyService
{
    public function __construct(
        private Client $client,
    ) {}
}

If you register multiple clients, you can autowire them by using the client name with a Client suffix as parameter name:

use MongoDB\Bundle\Attribute\AutowireClient;
use MongoDB\Client;

class MyService
{
    public function __construct(
        // Will autowire the client with the id "second"
        private Client $secondClient,
    ) {}
}

or by using the #[AutowireClient] attribute:

use MongoDB\Bundle\Attribute\AutowireClient;
use MongoDB\Client;

class MyService
{
    public function __construct(
        #[AutowireClient('second')]
        private Client $client,
    ) {}
}

Database Usage

The client service provides access to databases and collections. You can access a database by calling the selectDatabase method, passing the database name and potential options:

use MongoDB\Client;
use MongoDB\Database;

class MyService
{
    private Database $database;

    public function __construct(
        Client $client,
    ) {
        $this->database = $client->selectDatabase('myDatabase');
    }
}

An alternative to this is using the #[AutowireDatabase] attribute, referencing the database name:

use MongoDB\Bundle\Attribute\AutowireDatabase;
use MongoDB\Database;

class MyService
{
    public function __construct(
        #[AutowireDatabase('myDatabase')]
        private Database $database,
    ) {}
}

If you don't specify a database name in the attribute, the default database name (specified in the default_database configuration option) will be used. If you did not define a default database, the database name has to be specified in the attribute.

If you have more than one client defined, you can also reference the client:

use MongoDB\Bundle\Attribute\AutowireDatabase;
use MongoDB\Database;

class MyService
{
    public function __construct(
        #[AutowireDatabase(database: 'myDatabase', client: 'second')]
        private Database $database,
    ) {}
}

Collection Usage

To inject a collection, you can either call the selectCollection method on a Client or Database instance. For convenience, the #[AutowireCollection] attribute provides a quicker alternative:

use MongoDB\Bundle\Attribute\AutowireCollection;
use MongoDB\Collection;

class MyService
{
    public function __construct(
        #[AutowireCollection(
            database: 'myDatabase',
            collection: 'myCollection'
        )]
        private Collection $collection,
    ) {}
}

You can also omit the collection option if the property name matches the collection name. In the following example the collection name is myCollection, inferred from the property name:

use MongoDB\Bundle\Attribute\AutowireCollection;
use MongoDB\Collection;

class MyService
{
    public function __construct(
        #[AutowireCollection(
            database: 'myDatabase',
        )]
        private Collection $myCollection,
    ) {}
}

If you have more than one client defined, you can also reference the client:

use MongoDB\Bundle\Attribute\AutowireCollection;
use MongoDB\Collection;

class MyService
{
    public function __construct(
        #[AutowireCollection(
            database: 'myDatabase',
            client: 'second',
        )]
        private Collection $myCollection,
    ) {}
}

By specifiying the default_database option in the configuration, you can omit the database option in the AutowireCollection attribute:

mongodb:
  clients:
    default:
      uri: '%env(MONGODB_URI)%'
+      default_database: 'myDatabase'

use MongoDB\Bundle\Attribute\AutowireCollection;
use MongoDB\Collection;

class MyService
{
    public function __construct(
        #[AutowireCollection]
        private Collection $myCollection,
    ) {}
}

Specifying options

When using the AutowireDatabase or AutowireCollection attributes, you can specify additional options for the resulting instances. You can pass the following options: || Option || Accepted type || | codec | DocumentCodec instance | | typeMap| array containing type map information | | readPreference | MongoDB\Driver\ReadPreference instance | | writeConcern | MongoDB\Driver\writeConcern instance | | readConcern | MongoDB\Driver\ReadConcern instance |

In addition to passing an instance, you can also pass a service reference by specifying a string for the given option:

use MongoDB\Bundle\Attribute\AutowireCollection;
use MongoDB\Collection;
use MongoDB\Driver\ReadPreference;

class MyService
{
    public function __construct(
        #[AutowireCollection(codec: Codec::class, readPreference: new ReadPreference('secondary'))]
        private Collection $myCollection,
    ) {}
}

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