mirror of https://github.com/tiangolo/fastapi.git
48 lines
2.2 KiB
Markdown
48 lines
2.2 KiB
Markdown
## Use a `Response` parameter
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You can declare a parameter of type `Response` in your *path operation function*.
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And then you can set cookies in that *temporal* response object.
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```Python hl_lines="1 8 9"
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{!./src/response_cookies/tutorial002.py!}
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```
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And then you can return any object you need, as you normally would (a `dict`, a database model, etc).
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And if you declared a `response_model`, it will still be used to filter and convert the object you returned.
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**FastAPI** will use that *temporal* response to extract the cookies (also headers and status code), and will put them in the final response that contains the value you returned, filtered by any `response_model`.
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You can also declare the `Response` parameter in dependencies, and set cookies (and headers) in them.
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## Return a `Response` directly
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You can also create cookies when returning a `Response` directly in your code.
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To do that, you can create a response as described in [Return a Response Directly](response-directly.md){.internal-link target=_blank}.
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Then set Cookies in it, and then return it:
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```Python hl_lines="10 11 12"
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{!./src/response_cookies/tutorial001.py!}
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```
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!!! tip
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Have in mind that if you return a response directly instead of using the `Response` parameter, FastAPI will return it directly.
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So, you will have to make sure your data is of the correct type. E.g. it is compatible with JSON, if you are returning a `JSONResponse`.
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And also that you are not sending any data that should have been filtered by a `response_model`.
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### More info
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!!! note "Technical Details"
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You could also use `from starlette.responses import Response` or `from starlette.responses import JSONResponse`.
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**FastAPI** provides the same `starlette.responses` as `fastapi.responses` just as a convenience for you, the developer. But most of the available responses come directly from Starlette.
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And as the `Response` can be used frequently to set headers and cookies, **FastAPI** also provides it at `fastapi.Response`.
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To see all the available parameters and options, check the <a href="https://www.starlette.io/responses/#set-cookie" class="external-link" target="_blank">documentation in Starlette</a>.
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