# Response Cookies { #response-cookies }

## Use a `Response` parameter { #use-a-response-parameter }

You can declare a parameter of type `Response` in your *path operation function*.

And then you can set cookies in that *temporal* response object.

{* ../../docs_src/response_cookies/tutorial002.py hl[1, 8:9] *}

And then you can return any object you need, as you normally would (a `dict`, a database model, etc).

You can use Pydantic's model configuration to `forbid` any `extra` fields:

{* ../../docs_src/cookie_param_models/tutorial002_an_py39.py hl[10] *}

If a client tries to send some **extra cookies**, they will receive an **error** response.

## Pydantic-модель для cookies

Объявите параметры **cookie**, которые вам нужны, в **Pydantic-модели**, а затем объявите параметр как `Cookie`:

{* ../../docs_src/cookie_param_models/tutorial001_an_py310.py hl[9:12,16] *}

**FastAPI** **извлечёт** данные для **каждого поля** из **cookies**, полученных в запросе, и выдаст вам объявленную Pydantic-модель.

## Проверка сгенерированной документации

    )
    get(urlWithIpAddress)
    val cookies = cookieManager.cookieStore.cookies
    assertThat(cookies.size).isEqualTo(1)
    val cookie = cookies[0]
    assertThat(cookie.name).isEqualTo("a")
    assertThat(cookie.value).isEqualTo("android")
    // Converting to a fixed date can cause rounding!
    assertThat(cookie.maxAge.toDouble()).isCloseTo(60.0, 1.0)
    assertThat(cookie.path).isEqualTo("/path")

      if (("Cookie".equals(key, ignoreCase = true) || "Cookie2".equals(key, ignoreCase = true)) &&
        value.isNotEmpty()
      ) {
        for (header in value) {
          if (cookies == null) cookies = mutableListOf()
          cookies.addAll(decodeHeaderAsJavaNetCookies(url, header))
        }
      }
    }

    return if (cookies != null) {
      Collections.unmodifiableList(cookies)
    } else {

    internal constructor(cookie: Cookie) : this() {
      this.name = cookie.name
      this.value = cookie.value
      this.expiresAt = cookie.expiresAt
      this.domain = cookie.domain
      this.path = cookie.path
      this.secure = cookie.secure
      this.httpOnly = cookie.httpOnly
      this.persistent = cookie.persistent
      this.hostOnly = cookie.hostOnly
      this.sameSite = cookie.sameSite

        Cookie[] cookies = getMockResponse().getCookies();
        boolean found = false;
        for (Cookie cookie : cookies) {
            if ("FESS_SEARCH_PARAM".equals(cookie.getName())) {
                found = true;
                assertNotNull(cookie.getValue());
            }
        }
        assertTrue(found);
        getMockRequest().addCookie(cookies[0]);

# Cookie Parameters { #cookie-parameters }

You can define Cookie parameters the same way you define `Query` and `Path` parameters.

## Import `Cookie` { #import-cookie }

First import `Cookie`:

{* ../../docs_src/cookie_params/tutorial001_an_py310.py hl[3] *}

## Declare `Cookie` parameters { #declare-cookie-parameters }

Then declare the cookie parameters using the same structure as with `Path` and `Query`.

  }
}

fun CookieJar.receiveHeaders(
  url: HttpUrl,
  headers: Headers,
) {
  if (this === CookieJar.NO_COOKIES) return

  val cookies = Cookie.parseAll(url, headers)
  if (cookies.isEmpty()) return

  saveFromResponse(url, cookies)
}

/**
 * Returns true if the response headers and status indicate that this response has a (possibly
 * 0-length) body. See RFC 7231.
 */

For those cases, you can use a `Response` parameter.

## Use a `Response` parameter { #use-a-response-parameter }

You can declare a parameter of type `Response` in your *path operation function* (as you can do for cookies and headers).

And then you can set the `status_code` in that *temporal* response object.

{* ../../docs_src/response_change_status_code/tutorial001.py hl[1,9,12] *}