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https://github.com/mongodb-labs/symfony-mongodb

(Experimental) Bundle to provide a lightweight integration of MongoDB in Symfony
https://github.com/mongodb-labs/symfony-mongodb

mongodb symfony symfony-bundle

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(Experimental) Bundle to provide a lightweight integration of MongoDB in Symfony

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# Symfony Bundle for MongoDB (EXPERIMENTAL)



This bundle provides integration of the [MongoDB library](https://github.com/mongodb/mongo-php-library)

into Symfony. It is designed as a lightweight alternative to the [Doctrine MongoDB ODM](https://github.com/doctrine/mongodb-odm),

providing only an integration to interact with MongoDB without providing all features of an ODM.



## Installation



Install the bundle with composer:



```bash

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:



```php

// config/bundles.php



 ['all' => true],

];

```



## Configuration



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

client:



```yaml

# 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:



```yaml

mongodb:

  clients:

    default: '%env(MONGODB_URI)%'

```



You can also specify additional options for the client:



```yaml

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](https://www.php.net/manual/en/mongodb-driver-manager.construct.php) for available options.



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



```yaml

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:



```php

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:



```php

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:



```php

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:



```php

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:



```php

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:



```php

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:



```php

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:



```php

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:



```php

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:



```diff

mongodb:

  clients:

    default:

      uri: '%env(MONGODB_URI)%'

+      default_database: 'myDatabase'

```



```php

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:



```php

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,

    ) {}

}

```