Estos validadores personalizados son para cosas que pueden comprobarse **solo** con los **mismos datos** provistos en el request.

///

### Entiende ese código { #understand-that-code }

El punto importante es solo usar **`AfterValidator` con una función dentro de `Annotated`**. Si quieres, sáltate esta parte. 🤸

---

{* ../../docs_src/response_model/tutorial003_04_py310.py hl[8] *}

...esto falla porque la anotación de tipo no es un tipo de Pydantic y no es solo una sola clase `Response` o subclase, es una unión (cualquiera de los dos) entre una `Response` y un `dict`.

### Desactivar el Modelo de Response { #disable-response-model }

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