- before_filter :authenticate_user, :only => [:new, :create, :update, :destroy]
- before_filter :authenticate_artist, :only => [:new, :create, :update, :destroy]
+ before_action :authenticate_user, :only => [:new, :create, :update, :destroy]
+ before_action :authenticate_artist, :only => [:new, :create, :update, :destroy]