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

Use fields_for for the associated models.
There should be no square brackets arround the parameters of fields_for

In your code example, I cannot find the relation between Patient and Diagnosis, and the plural of diagnosis is diagnoses, you can specify this in config/initializers/inflections.rb:

ActiveSupport::Inflector.inflections do |inflect|
  inflect.irregular 'diagnosis','diagnoses'
end

So your Patient model should contain

class Patient < ActiveRecord::Base
  attr_accessible :age, :name, :city, :street, :number
  has_many :diagnoses
end

And you can write in your form:

 

   <%= f.label :content %>

   <%= f.text_field :content %>
 
 <%= fields_for(@patient, @patient.diagnoses.build) do |u| %>
 

   <%= u.label :content %>

   <%= u.text_field :content %>
 
 <% end %>
 

   <%= f.submit %>