django/django — pull request #1690 by albertyw (2013-09-29 20:02:14+00:00)
Title: Fixed #21194 -- Removed Nullification of Foreign Keys To CharFields

This pull request fixes https://code.djangoproject.com/ticket/21194#ticket

I basically made the `get_db_prep_save` function not convert a value to False if the related field is a CharField type.