使用 Pydantic.BaseModel 时如何访问 fastapi.Request.state

Question

I'm trying to create a pydantic BaseModel that will be able to map some data from the request body and also from the request.state.

How can this be accomplished?

Answer 1

Request metadata shouldn't be part of your model - the model should only be concerned with the actual request (ie the data submitted by the user).

To access metadata about the request, add a Request object to your view definition:

def my_method(item: Item, request: Request):

This will magically give you all the metadata (including the .state entry) under the request variable in your view function.