Forwarder

Forward Modelable registration decorators to another Modelable.

A ModelableForwarder is a registration proxy: every decorator invoked on it is delegated, unchanged, to a target Modelable. The target then behaves exactly as if it had been decorated directly, so a third-party module can register attributes, unions or enums onto a core model it never imports, by going through a forwarder instead.

Bind a forwarder to its target by subclassing with the forwards_to keyword:

from pydantic import BaseModel
from pydantic_modelable import Modelable, ModelableForwarder

class Profile(Modelable):
    ...

class ExtensionForwarder(ModelableForwarder, forwards_to=Profile):
    ...

# Lands on `Profile` as if `@Profile.as_attribute('indirect')` was used:
@ExtensionForwarder.as_attribute('indirect')
class IndirectExtension(BaseModel):
    ...

The target may itself be another ModelableForwarder, in which case forwarders are chained until a concrete Modelable is reached.