Makasih semuanya! masalah saya selesai :)

def update
                @user = User.find(params[:id])
                if @user.update_attributes(params[:user]) &&
@user.address.update_attributes(params[:address])               
                        redirect_to :action => 'list'
                else                    
                        @provinces = Province.find(:all)
                        @countries = Country.find(:all)
                        render :action => 'edit'
                end
        end

Kirim email ke