Ch.5 assigns[key] is used

[JunichiIto]

contacts_controller_spec uses assigns[:contact]:

        it "redirects to contacts#show" do
          post :create,
            contact: attributes_for(:contact,
              phones_attributes: @phones)
          expect(response).to redirect_to contact_path(assigns[:contact])
        end

I did not know this also works, but it should be assigns(:contact) for consistency.