Set ``on_delete`` to ``models.PROTECT`` for ``created_by`` and ``updated_by`` ForeignKey fields. ``on_delete`` will become a required parameter in Django 1.9. Fixes #5401.
Set ``on_delete`` to ``models.PROTECT`` for ``created_by`` and ``updated_by`` ForeignKey fields. ``on_delete`` will become a required parameter in Django 1.9. Fixes #5401.

thecut/thecut-authorship