Request json is null

[josesalasdev]

When calling this method await request.json() it is common to encounter this exception
raise JSONDecodeError("Expecting value", s, err.value) from None json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0) when the body is null, my idea is to expose a flag that allows to control this error:

Path module: starlette/requests.py

async def json(self, nullable: bool = False) -> typing.Any:
        if not hasattr(self, "_json"):
            body = await self.body()
            self._json = {} if (body == b'' and nullable) else json.loads(body)
        return self._json

this makes sense for you and the users ?
josesalasdev@16c1c8e

[josesalasdev]

@tomchristie this makes sense for you?

[snosratiershad]

I think {} isn't a good response with nullable flag because it will returns same value for b'' and b'{}' as request body.
Also None isn't good too, as it is the representation of null.
I think if we decide to add to add a flag like it and it's functionality, empty string would be a better response.