tomchristie/django-rest-framework — pull request #1536 by Ian-Foote (2014-04-16 11:36:29+00:00)
Title: Allow customising ChoiceField blank display value

Django Rest Framework currently displays django's `BLANK_CHOICE_DASH` in an optional `ChoiceField`'s `choices`. This adds the possibility to customise the display value to something other than `'---------'`.