Method deconstruct

django/db/migrations/operations/fields.py:216–224

(self)

        super().__init__(model_name, name, field)

    def deconstruct(self):
        kwargs = {
            "model_name": self.model_name,
            "name": self.name,
            "field": self.field,
        }
        if self.preserve_default is not True:
            kwargs["preserve_default"] = self.preserve_default
        return (self.__class__.__name__, [], kwargs)

    def state_forwards(self, app_label, state):
        state.alter_field(