User validates_associated :activity.
@user = User.new(params[:user]) @user.build_activity(params[:activity]) if @user.save # saves both, runs in a transaction ... end
-- fxn
User validates_associated :activity.
@user = User.new(params[:user]) @user.build_activity(params[:activity]) if @user.save # saves both, runs in a transaction ... end
-- fxn