class Po开发者_运维百科llOption < ActiveRecord::Base
belongs_to :poll
has_one :address
end
class Address < ActiveRecord::Base
belongs_to :user, :poll_options
apply_addresslogic :fields => [[:number, :street], :city, [:state, :zip_code]]
end
Those are my relevant models. Any ideas? I kinda just need a good example.
For Rails 4
Product Model
has_one :nutrition_fact, dependent: :destroy
accepts_nested_attributes_for :nutrition_fact
Nutrition Fact Model
belongs_to :product
ProductsController
def new
@product = Product.new
@product.build_nutrition_fact
end
def edit
@product.build_nutrition_fact if @product.nutrition_fact.nil?
end
private
def product_params
params.require(:product).permit(:title, :price, nutrition_fact_attributes: [:serving_size, :amount_per_serving, :calories])
end
views/products/new.html.erb
<%= form_for @product do |f| %>
<%= f.label :title %>
<%= f.text_field :title %>
<%= f.label :price %>
<%= f.text_field :price %>
<%= f.fields_for :nutrition_fact do |fact| %>
<%= fact.label :serving_size %>
<%= fact.text_field :serving_size %>
<%= fact.label :amount_per_serving %>
<%= fact.text_field :amount_per_serving %>
<%= fact.label :calories %>
<%= fact.text_field :calories %>
<% end %>
<%= f.submit "Create Product", class: "example-class" %>
<% end %>
This should answer:
http://archives.ryandaigle.com/articles/2009/2/1/what-s-new-in-edge-rails-nested-attributes
The main idea is to declare accepts_nested_attributes_for :address
in your PollOption model and to change your form as indicated in the step 2 of the link I provided.
Another useful link: http://api.rubyonrails.org/classes/ActiveRecord/NestedAttributes/ClassMethods.html
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