ruby on rails-如何通过多个子类别进行收集

Question

如何查看嵌套在用户拥有的几个关联模型下的帖子？

    @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)

记录器给我集合，所以我知道代码一直在工作，直到

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

我可以收集产品，但一旦我尝试从中收集帖子，它就会给我错误

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

我试过了：包括两个方向，但都无济于事
编辑：这是我的大多数模型：（我以前认为它可能会拥挤，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：
我发现了树的结构，但这种结构停留在自己的模型中，所以没有结果。我看了一遍http://guides.rubyonrails.org/association_basics.html我也只能走得和我一样远。我曾经尝试过在产品中循环，但这给了我错误"do"one_answers"end"都是出乎意料的。我想搜索"多标签查询"，但结果没有深入到4个级别，所以这也没有多大帮助。为了方便起见，我会在表格中添加额外的列，但我想保持干燥。

你怎么想的？或者，对我来说，在谷歌上尝试什么是一个好的搜索词？非常感谢你为我提供的任何帮助。

编辑2
在此处找到一些内容，稍后将进行测试
通过多个级别的Rails关联（运气不好）
如何进行多级关联？（看起来很有希望）

Answer 1

看起来你在Product上缺少了一个has_many关联，你能发布那个代码吗？

它应该类似于：

class Product < ActiveRecord::Base
  has_many :posts
end

Answer 2

经过数周的努力。。

我发现诀窍就在这块宝石上http://rubygems.org/gems/nested_has_many_through它可以做这样的事情：

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

这大大简化了我的查询和收集。