你可以定义任意深度的嵌套模型：

{* ../../docs_src/body_nested_models/tutorial007_py310.py hl[7,12,18,21,25] *}

/// info | 信息

请注意 `Offer` 拥有一组 `Item` 而反过来 `Item` 又是一个可选的 `Image` 列表是如何发生的。

///

## 纯列表请求体 { #bodies-of-pure-lists }

如果你期望的 JSON 请求体的最外层是一个 JSON `array`（即 Python `list`），则可以在路径操作函数的参数中声明此类型，就像声明 Pydantic 模型一样：

```Python
images: list[Image]
```

例如：

else
  export TF_VER_FULL="$(tfrun bazel run //tensorflow/tools/ci_build:calculate_full_version -- --wheel-type release)"
fi

# Note on gsutil commands:
# "gsutil cp" always "copies into". It cannot act on the contents of a directory
# and it does not seem possible to e.g. copy "gs://foo/bar" as anything other than
# "/path/bar". This script uses "gsutil rsync" instead, which acts on directory

		// gets preserved and moved into left most elements, regardless of
		// IP based sorting.
		{
			ipList:       []string{"hostname1", "10.0.0.13", "hostname2", "127.0.0.1", "192.168.1.106"},
			sortedIPList: []string{"hostname1", "hostname2", "192.168.1.106", "10.0.0.13", "127.0.0.1"},
		},
		// With same higher octets, preferentially move the localhost.
		{

    than 63 characters between dots), and empty labels.
 *  New: Don't include the `Content-Length` header in multipart bodies. Servers must delimit
    OkHttp's request bodies using the boundary only. (This change makes OkHttp more consistent with
    browsers and other HTTP clients.)
 *  New: Drop the `tunnelProxy` argument in `MockWebServer.useHttps()`. This change only impacts

   * {@code true}. The components are evaluated in order, and evaluation will be "short-circuited"
   * as soon as a false predicate is found. It defensively copies the iterable passed in, so future
   * changes to it won't alter the behavior of this predicate. If {@code components} is empty, the
   * returned predicate will always evaluate to {@code true}.
   *

    RoundToDoubleTester(BigDecimal input) {
      this.input = input;
    }

    @CanIgnoreReturnValue
    RoundToDoubleTester setExpectation(double expectedValue, RoundingMode... modes) {
      for (RoundingMode mode : modes) {
        Double previous = expectedValues.put(mode, expectedValue);
        if (previous != null) {
          throw new AssertionError();
        }
      }
      return this;
    }

With **FastAPI**, using OpenAPI, you can define the names of these webhooks, the types of HTTP operations that your app can send (e.g. `POST`, `PUT`, etc.) and the request **bodies** that your app would send.

This can make it a lot easier for your users to **implement their APIs** to receive your **webhook** requests, they might even be able to autogenerate some of their own API code.

/// info

Con **FastAPI**, usando OpenAPI, puedes definir los nombres de estos webhooks, los tipos de operaciones HTTP que tu aplicación puede enviar (por ejemplo, `POST`, `PUT`, etc.) y los **bodies** de las requests que tu aplicación enviaría.

# Comment faire - Recettes { #how-to-recipes }

Vous trouverez ici différentes recettes ou des guides « comment faire » pour **plusieurs sujets**.

La plupart de ces idées sont plus ou moins **indépendantes**, et dans la plupart des cas vous n'avez besoin de les étudier que si elles s'appliquent directement à **votre projet**.

/// info

`Form` is a class that inherits directly from `Body`.

///

/// tip

To declare form bodies, you need to use `Form` explicitly, because without it the parameters would be interpreted as query parameters or body (JSON) parameters.

///

## About "Form Fields" { #about-form-fields }