Rails的套裝在加連接表

Question

我有以下型號及運行的軌道3.01：

# file: app/models/product.rb 
class Product < ActiveRecord::Base 
    has_many :categories, :through => :product_categories 
    has_many :product_categories, :dependent => :destroy 
    accept_nested_attributes_for :product_categories 
end 

# file: app/models/category.rb 
class Category < ActiveRecord::Base 
    has_many :products, :through => :product_categories 
    has_many :product_categories, :dependent => :destroy 
end 

# file: app/models/product_category.rb 
class ProductCategory < ActiveRecord::Base 
    belongs_to :product 
    belongs_to :category 
end 

產品分類是我的連接表。我在產品表格中打什麼電話？我建立在Categories表或ProdcutCategories表上嗎？我只是很困惑，我應該如何嵌入我的產品。謝謝！

Answer 1

該模型已被配置爲接受products_categories關聯的屬性。在你的表單只是像這樣引用它：

<%= f.fields_for :products_categories do |pc| %> 
    # fields go here 

請記住，你將需要建立新的對象爲products_categories關聯之前這種形式會呈現什麼：

products.products_categories.build