Ruby on Rails, two models in one form

Question

I have two very similar models Pretreatment and Diagnosis, that belong to the model Patient:

class Pretreatment < ActiveRecord::Base
  belongs_to :patient
  a         


        

Answer 1

You can achieve that using nested attributes :

patient.rb

class Patient < ActiveRecord::Base
  attr_accessible :age, :name,  :pretreatments_attributes, :diagnosiss_attributes
  has_many :pretreatments
  has_many :diagnosiss

  accepts_nested_attributes_for :pretreatments
  accepts_nested_attributes_for :diagnosiss
end

patients_controller.rb

def show
    @patient = Patient.find(params[:id])
    @patient.pretreatments.build
    @patient.diagnosiss.build
    respond_to do |format|
      format.html # show.html.erb
      format.json { render json: @patient }
    end
  end

patients/show.html.erb:

<%= form_for @patient do  |f|%>
    
Pretreatments:

    <%= f.fields_for :pretreatments do |field| %>
        <%= field.label "Content" %>