Si vous ne savez pas ce que c'est, vous apprendrez ce qu'est un « hachage de mot de passe » dans les [chapitres sur la sécurité](security/simple-oauth2.md#password-hashing).

///

## Utiliser plusieurs modèles { #multiple-models }

Voici une idée générale de l'apparence des modèles avec leurs champs de mot de passe et les endroits où ils sont utilisés :

    "name": "Foo",
    "description": "The pretender",
    "price": 42.0,
    "tax": 3.2,
    "tags": ["rock", "metal", "bar"],
    "image": {
        "url": "http://example.com/baz.jpg",
        "name": "The Foo live"
    }
}
```

Là encore, avec cette simple déclaration, avec FastAPI vous obtenez :

- Prise en charge par l'éditeur (autocomplétion, etc.), même pour les modèles imbriqués
- Conversion des données

/**
 * Builder class for creating RequestData objects using a fluent interface.
 * This class provides a simple way to construct RequestData objects with method chaining.
 *
 * <p>Usage example:</p>
 * <pre>
 * RequestData request = RequestDataBuilder.newRequestData()
 *     .method("GET")
 *     .url("https://example.com")
 *     .weight(1.0f)
 *     .build();
 * </pre>
 *

* `allow_origins` - Cross-origin request yapmasına izin verilmesi gereken origin’lerin listesi. Örn. `['https://example.org', 'https://www.example.org']`. Herhangi bir origin’e izin vermek için `['*']` kullanabilirsiniz.
* `allow_origin_regex` - Cross-origin request yapmasına izin verilmesi gereken origin’lerle eşleşecek bir regex string’i. Örn. `'https://.*\.example\.org'`.

          "normalization-java"
        ],
        "parallelizationMethod": {
          "name": "TestDistribution"
        }
      },
      {
        "subprojects": [
          "build-cache-example-client",
          "client-services",
          "composite-builds",
          "docs",
          "files",
          "model-reflect",
          "request-handler-worker",
          "security",

## How to enable Fan-Out Uploads ?

Fan-Out uploads are automatically enabled if `x-minio-fanout-list` form-field is provided with the PostUpload API, to keep things simple higher level APIs are provided in our SDKs for example in `minio-go` SDK:

```
PutObjectFanOut(ctx context.Context, bucket string, fanOutContent io.Reader, fanOutReq minio.PutObjectFanOutRequest) ([]minio.PutObjectFanOutResponse, error)

That's why in this example we have to declare it in the `response_model` parameter.

...but continue reading below to see how to overcome that.

## Return Type and Data Filtering { #return-type-and-data-filtering }

* `allow_origins` - Список источников, на которые разрешено выполнять кросс-доменные запросы. Например, `['https://example.org', 'https://www.example.org']`. Можно использовать `['*']`, чтобы разрешить любые источники.
* `allow_origin_regex` - Регулярное выражение для определения источников, на которые разрешено выполнять кросс-доменные запросы. Например, `'https://.*\.example\.org'`.

///

{* ../../docs_src/extra_models/tutorial003_py310.py hl[1,14:15,18:20,33] *}

### `Union` in Python 3.10 { #union-in-python-3-10 }

In this example we pass `Union[PlaneItem, CarItem]` as the value of the argument `response_model`.

    @Test
    void getHostNameDelegatesToWrappedInetAddress() {
        InetAddress dummy = mock(InetAddress.class);
        when(dummy.getHostName()).thenReturn("host.example.com");
        UniAddress ua = new UniAddress(dummy);
        assertEquals("host.example.com", ua.getHostName(), "should forward hostName to underlying InetAddress");
    }

    @Test
    void getHostAddressDelegatesToWrappedInetAddress() {