gistfile1

$ rake db:migrate
(in /Users/lucascaton/projects/code/ruby/pessoais/golks)
==  AddNameToMovies: migrating ================================================
-- add_column(:movies, :name, :string, {:null=>false})
rake aborted!
An error has occurred, this and all later migrations canceled:

PGError: ERROR:  column "name" contains null values
: ALTER TABLE "movies" ALTER "name" SET NOT NULL

(See full trace by running task with --trace)