如何通過多個子類別收集

Question

什麼是軌道方式來查看嵌套在用戶habtm幾個關聯模型下的帖子？

@user = current_user 
    @user_clubs = @user.clubs #user is a member of many clubs (habtm), clubs have many events to post a quantity of products to 
    @uc_products = @user_clubs.collect {|a| a.products} # clubs have many products (and categories, haven't implemented yet) (with title, description, etc) 
    # @ucp_posts = @uc_categories.collect {|a| a.posts} # products have many posts (product_id, quantity, & date offered only) 

記錄儀給我集合，所以我知道代碼工作了，直到那點

#<User:0x58d4300> 
#<Club:0x5aa82e8>#<Club:0x5aa3578> 
#<Product:0x59150e8>#<Product:0x5911bc0>#<Product:0x58582b0> 

我可以收集產品，但只要我嘗試和收集從崗位，它給我錯誤

undefined method `posts' for #<Class:0x5a248d0> 

我試過：包括，兩個方向，無濟於事。
編輯：這裏是我的大部分車型：（我認爲這之前可能人羣的事情，不包括）

 class Post < ActiveRecord::Base 
      belongs_to :product, :include => :club 
      belongs_to :event 

    class Product < ActiveRecord::Base 
     belongs_to :user 
     belongs_to :club 
     belongs_to :category 
     has_many :posts 

    class Club < ActiveRecord::Base 
     has_many :products, :include => :posts 
      has_many :events 
      belongs_to :users_clubs 
      has_many :users_clubs 
      has_many :users, :through => :users_clubs, :foreign_key => :users_club_id 

class UsersClub < ActiveRecord::Base #table for joining habtm 
    has_many :users 
    has_many :clubs 
    belongs_to :user 
    belongs_to :club 

class Event < ActiveRecord::Base 
    has_many :posts 
    belongs_to :club 


    class User < ActiveRecord::Base 
     # Include default devise modules. Others available are: 
     # :token_authenticatable, :encryptable, :confirmable, :lockable, :timeoutable and :omniauthable 
     devise :database_authenticatable, :registerable, 
      :recoverable, :rememberable, :trackable, :validatable 

     # Setup accessible (or protected) attributes for your model 
     attr_accessible :name, :email, :password, :password_confirmation, :remember_me, 
         :bio, :reason, :barter 

         #:email, :name, :bio, :reason, :barter, : 

     belongs_to :roles_users     
     has_many :roles_users 
     has_many :roles, :through => :roles_users 

     belongs_to :users_clubs     
     has_many :users_clubs 
     has_many :clubs, :through => :users_clubs, :foreign_key => :users_club_id 

     has_many :approvals, :dependent => :destroy 
     has_many :products, :dependent => :destroy 
     has_many :posts, :dependent => :destroy 
     has_many :orders, :dependent => :destroy 

我的研究：
我發現樹結構，但是結構停留在它自己的模型，所以沒有成果。我也瀏覽過http://guides.rubyonrails.org/association_basics.html，只能和我一樣。我嘗試了一次循環產品，但是這給了我錯誤'do'和'end'都是意外的。我想過要搜索'多個標籤查詢'，但結果並不是4層深，所以也沒有多大幫助。我會在表格中加入額外的欄目以方便使用，但我想讓事情保持乾爽。

Whatdya認爲？或者，對我來說，嘗試使用谷歌會是一個很好的搜索術語？任何幫助都非常讚賞這個noob。

編輯2
找到的東西在這裏，將測試後
Rails Associations Through Multiple Levels（沒有運氣）
How to multi-level Associations?（看起來很有希望）

Answer 1

辛勞周後對這個..

我已經找到了訣竅是這種寶石http://rubygems.org/gems/nested_has_many_through可以做這樣的事情：

class Author < User 
    has_many :posts 
    has_many :categories, :through => :posts, :uniq => true 
    has_many :similar_posts, :through => :categories, :source => :posts 
    has_many :similar_authors, :through => :similar_posts, :source => :author, :uniq => true 
    has_many :posts_of_similar_authors, :through => :similar_authors, :source => :posts, :uniq => true 
    has_many :commenters, :through => :posts, :uniq => true 
end 

class Post < ActiveRecord::Base 
    belongs_to :author 
    belongs_to :category 
    has_many :comments 
    has_many :commenters, :through => :comments, :source => :user, :uniq => true 
end 

這超簡化了我的查詢和集合。

Answer 2

你好像缺少一個產品協會的has_many，你能張貼碼？

應該類似於：

class Product < ActiveRecord::Base 
    has_many :posts 
end