labels.facet_filetype_mp4a=Audio MP4A
labels.facet_filetype_oga=Audio OGA
labels.facet_filetype_wepb=Immagine WEBP
labels.facet_filetype_bmp=Immagine BMP
labels.facet_filetype_ico=Immagine ICO
labels.facet_filetype_png=Immagine PNG
labels.facet_filetype_svg=Immagine SVG
labels.facet_filetype_tiff=Immagine TIFF
labels.facet_filetype_jpg=Immagine JPEG
labels.facet_filetype_archive=Archivio
labels.facet_filetype_bat=File batch

errors.design_jsp_file_does_not_exist = Il file JSP non esiste.
errors.design_file_name_is_not_found = Il nome del file non è stato specificato.
errors.failed_to_write_design_image_file = Impossibile caricare il file immagine.
errors.failed_to_update_jsp_file = Impossibile aggiornare il file JSP.
errors.design_file_name_is_invalid = Il nome del file non è valido.
errors.design_file_is_unsupported_type = Questo tipo di file non è supportato.

@subrouter.post("/invoices/", callbacks=invoices_callback_router.routes)
def create_invoice(invoice: Invoice, callback_url: HttpUrl | None = None):
    """
    Create an invoice.

    This will (let's imagine) let the API user (some external developer) create an
    invoice.

    And this path operation will:

    * Send the invoice to the client.
    * Collect the money from the client.

For example, if you need to store it in a database.

For that, **FastAPI** provides a `jsonable_encoder()` function.

## Using the `jsonable_encoder` { #using-the-jsonable-encoder }

Let's imagine that you have a database `fake_db` that only receives JSON compatible data.

For example, it doesn't receive `datetime` objects, as those are not compatible with JSON.

But in some cases you need to return a different status code than the default.

## Use case { #use-case }

For example, imagine that you want to return an HTTP status code of "OK" `200` by default.

But if the data didn't exist, you want to create it, and return an HTTP status code of "CREATED" `201`.

    pass


@app.post("/invoices/", callbacks=invoices_callback_router.routes)
def create_invoice(invoice: Invoice, callback_url: HttpUrl | None = None):
    """
    Create an invoice.

    This will (let's imagine) let the API user (some external developer) create an
    invoice.

    And this path operation will:

    * Send the invoice to the client.
    * Collect the money from the client.

Porém em alguns casos você precisa retornar um código de status diferente do padrão.

## Caso de uso { #use-case }

Por exemplo, imagine que você deseja retornar um código de status HTTP de "OK" `200` por padrão.

Mas se o dado não existir, você quer criá-lo e retornar um código de status HTTP de "CREATED" `201`.

Being able to use asynchronous functions in your tests could be useful, for example, when you're querying your database asynchronously. Imagine you want to test sending requests to your FastAPI application and then verify that your backend successfully wrote the correct data in the database, while using an async database library.

Let's look at how we can make that work.

Let's start with an example **use case** and then see how to solve it with this.

Let's imagine that you have some **machine learning models** that you want to use to handle requests. 🤖

The same models are shared among requests, so, it's not one model per request, or one per user or something similar.

{* ../../docs_src/python_types/tutorial001_py310.py hl[2] *}

### Edit it { #edit-it }

It's a very simple program.

But now imagine that you were writing it from scratch.

At some point you would have started the definition of the function, you had the parameters ready...

But then you have to call "that method that converts the first letter to upper case".