更新一个模型并在一种表单中创建其他模型Rails 3.2.5

Question

I have one form that can create two models perfectly, but, is there any way to update one of the models and create the other? Resuming: I have a form for creating an appointment and also I can create the person for this appointment.

def new
  @Cita = Cita.new
  @Cita.build_paciente

  render :new
end

def create

 @Cita = Cita.new(params[:cita])

 if @Cita.save
  redirect_to :action => 'hoy'
 else
  render  'new'

end

This is working pretty well when I create the two models at time, but if I fill the person fields ... How can I do for UPDATING the person attributes ("paciente") and creating the appointment ("Cita") for that person.

Thanks.

Answer 1

Finally I solved it adding a hidden field filling the person_ID on the person form. When you send the ID in the model attributes rails makes an update instead of an insert for that model while creates the other model associating the nested model. If this hidden field is empty, rails create the two models at time.