valdergallo/django-choice-flow — pull request #5 by rennerocha (2013-06-11 19:31:06+00:00)
Title: Removing db_index=True for FlowCharField and FlowIntegerField

Despite being a good practice to index fields, not every field should be indexed by default.

A good rule, if you are going to order by, or filter by, it should be indexed. The app should not make the decision for you.