typing.Self not supported in generic fields about pydantic HOT 2 OPEN

@strangemonad,

Yep, you're right, this isn't currently supported. I've marked this as a feature request. PRs with support are welcome!

from pydantic.

@sydney-runkle Hey, I started looking into this, and it seems a little tricky to me.

In the definition of Entity

class Entity(BaseModel):
    ref: Ref[Self]

Ref's __class_getitem__ method gets called which is defined here, though when its called, the typevar_values parameter is just Self, without a way to access or determine what Self is actually referring to (none that I could tell at least).

My best idea was to perhaps look try to look up the stack to figure out what Self refers to, kind of like what super() does, though I'm not sure that's the best idea.

Do you perhaps have any ideas/directions into how this should be implemented?

from pydantic.