def dissociate(self):
        self._parent.set_attribute(self._foreign_key, None)

        return self._parent.set_relation(self._relation, Result(None, self, self._parent))
Dissociate previously associated model from the given parent.
dataset/ETHPy150Open sdispater/orator/orator/orm/relations/belongs_to.py/BelongsTo.dissociate