sferik/rails_admin — pull request #1859 by TechFounder (2013-12-09 20:17:55+00:00)
Title: Auto generated migration file not needed if you already have an admin us...

...er class with Devise

For those who have an Devise admin user class already, you want to let people know that they need to delete the auto generated migration file which adds fields to your admin table before doing the migration.