dummy/db/migrate/20150412125404_add_lastfm_user_name_to_users.voluntary_engine.rb
# This migration comes from voluntary_engine (originally 20150119171210)
class AddLastfmUserNameToUsers < ActiveRecord::Migration
def up
add_column :users, :lastfm_user_name, :string
change_column :users, :email, :string, null: true
end
def down
remove_column :users, :lastfm_user_name
change_column :users, :email, :string, null: false
end
end