### Parâmetros do Pydantic v1 { #pydantic-v1-parameters }

Se você precisar usar algumas das ferramentas específicas do FastAPI para parâmetros como `Body`, `Query`, `Form` etc. com modelos do Pydantic v1, pode importá-las de `fastapi.temp_pydantic_v1_params` enquanto conclui a migração para o Pydantic v2:

{* ../../docs_src/pydantic_v1_in_v2/tutorial004_an_py310.py hl[4,18] *}

   *   <li>If a constructor or factory method takes a parameter whose type is interface, a dynamic
   *       proxy will be passed to the method. It's possible that the method body expects an
   *       instance method of the passed-in proxy to be of a certain value yet the proxy isn't aware
   *       of the assumption, in which case the equality check before and after serialization will
   *       fail.

		return
	}

	var rulesMap event.RulesMap
	if r.ContentLength < 0 {
		s.writeErrorResponse(w, errInvalidArgument)
		return
	}

	err := gob.NewDecoder(r.Body).Decode(&rulesMap)
	if err != nil {
		s.writeErrorResponse(w, err)
		return
	}

	globalEventNotifier.AddRulesMap(bucketName, rulesMap)
}

// HealthHandler - returns true of health

crawler.document.file.max.digest.length=200
# Whether to append meta content from files.
crawler.document.file.append.meta.content=true
# Whether to append body content from files.
crawler.document.file.append.body.content=true
# Default language for file documents.
crawler.document.file.default.lang=
# Patterns to include for file index processing.
crawler.document.file.default.include.index.patterns=

      .filter { "Cache" in it.simpleName!! }
      .also { eventRecorder.clearAllEvents() }

  private fun dnsResponse(s: String): MockResponse =
    MockResponse
      .Builder()
      .body(Buffer().write(s.decodeHex()))
      .addHeader("content-type", "application/dns-message")
      .addHeader("content-length", s.length / 2)
      .build()

  private fun buildLocalhost(

![editor support](https://fastapi.tiangolo.com/img/pycharm-completion.png)

You will get completion in code you might even consider impossible before. As for example, the `price` key inside a JSON body (that could have been nested) that comes from a request.

No more typing the wrong key names, coming back and forth between docs, or scrolling up and down to find if you finally used `username` or `user_name`.

<img src="/img/tutorial/generate-clients/image08.png">

## Beneficios { #benefits }

Cuando uses los clientes generados automáticamente obtendrás **autocompletado** para:

* Métodos.
* Payloads de request en el body, parámetros de query, etc.
* Payloads de response.

También tendrás **errores en línea** para todo.

{* ../../docs_src/custom_response/tutorial006c_py39.py hl[2,7,9] *}

### `StreamingResponse` { #streamingresponse }

Takes an async generator or a normal generator/iterator and streams the response body.

{* ../../docs_src/custom_response/tutorial007_py39.py hl[2,14] *}

#### Using `StreamingResponse` with file-like objects { #using-streamingresponse-with-file-like-objects }

/// note

Notice that `response_model` is a parameter of the "decorator" method (`get`, `post`, etc). Not of your *path operation function*, like all the parameters and body.

///

`response_model` receives the same type you would declare for a Pydantic model field, so, it can be a Pydantic model, but it can also be, e.g. a `list` of Pydantic models, like `List[Item]`.

	public final fun -deprecated_headers ()Lokhttp3/Headers;
	public synthetic fun <init> (Lokhttp3/Headers;Lokhttp3/RequestBody;Lkotlin/jvm/internal/DefaultConstructorMarker;)V
	public final fun body ()Lokhttp3/RequestBody;
	public static final fun create (Lokhttp3/Headers;Lokhttp3/RequestBody;)Lokhttp3/MultipartBody$Part;
	public static final fun create (Lokhttp3/RequestBody;)Lokhttp3/MultipartBody$Part;