0

tag_count 方法为我的 GroupsController 中的所有记录提供相同的值：

    @group_blog_tags=@group.blog.blog_posts.tag_counts

在哪里

     class Group < ActiveRecord::Base
      has_one :blog, :as => :owner, :dependent => :destroy


      class Blog < ActiveRecord::Base
          has_many :blog_posts, :order => "blog_posts.created_at desc", :dependent => 
            :destroy

但无论我选择哪个组，它总是获取标签表中的第一条记录。

我究竟做错了什么？

@group=Group.find(45)  => #<Group id: 45, name: "Royal P&O Princess", description:                        
        "Royal P&O Princess the next edit", created_at: "2013-03-04 06:04:57", 
        primary_photo_id: 807, updated_at: "2013-03-14 07:33:37", tags: "Caribbean, 
        Nile, Mediterranean", group_memberships_count: 2, group_type: 1, 
        last_updated_by: 1, content_updated_at: "2013-03-04 11:05:08", activity_points: 
        0, activity_status: 0, no_memberships_on: nil, owner_id: 28, sponsor_account_id: 
        65, views: 241, company_id: 0, active: 1, de_flag:0  

@group.blog.blog_posts => [#<BlogPost id: 12, created_at: "2013-03-20 05:08:56", 
       updated_at: "2013-03-20 05:08:56", blog_id: 74, creator_id: 1, title: "South 
       African Sojourn", text: "<p>\r\n\tSouth African Sojourn</p>\r\n", comments_count: 
       0, created_at_year_month: 201303, cached_tag_list: "Africa, Veldt", rating_count: 
       0, rating_total: 0, rating_avg: #<BigDecimal:b2de1978,'0.0',4(8)>, views: 1, 
       source: nil, link: nil, guid: nil, tagline: nil, creator_type: "Profile", 
       num_positive_votes: 0, num_negative_votes: 0, net_helpful: 0, best_image: nil, 
      active: 1>, #<BlogPost id: 11, created_at: "2013-03-20 03:46:07", updated_at: 
      "2013-03-20 03:46:07", blog_id: 74, creator_id: 1, title: "African safari", text: 
       "<p>\r\n\tAfrican safari&nbsp;Africa, Safari&nbsp;Afric...", comments_count: 0, 
       created_at_year_month: 201303, cached_tag_list: "Africa, Safari, Veldt", 
       rating_count: 0, rating_total: 0, rating_avg: #<BigDecimal:b2de1518,'0.0',4(8)>, 
       views: 1, source: nil, link: nil, guid: nil, tagline: nil, creator_type: 
       "Profile", num_positive_votes: 0, num_negative_votes: 0, net_helpful: 0, 
       best_image: nil, active: 1>, #<BlogPost id: 2, created_at: "2013-03-04 06:34:53", 
      updated_at: "2013-03-04 06:34:53", blog_id: 74, creator_id: 28, title: "New blog 
       post", text: "<p>\r\n\tNew blog post</p>\r\n", comments_count: 4, 
      created_at_year_month: 201303, cached_tag_list: "New blog post", rating_count: 0, 
       rating_total: 0, rating_avg: #<BigDecimal:b2de1414,'0.0',4(8)>, views: 7, source: 
       nil, link: nil, guid: nil, tagline: nil, creator_type: "Profile", 
       num_positive_votes: 1, num_negative_votes: 0, net_helpful: 1, best_image: nil, 
       active: 1>]  

       @group.blog.blog_posts.tag_counts          => [#<Tag id: 1, name: "acticity 
     stream message">]     


       Trying another group:
       Group.find(40).blog.blog_posts.tag_counts  => [#<Tag id: 1, name: "acticity 
       stream message">]

它总是获取与结果相同的记录！

4

1 回答 1

0

我认为一个组“belongs_to”是一个博客，而不是“has_one”。

编辑

您必须指定组和博客之间的关系。可能是这种情况：

  • 一个群有_一个博客，一个博客属于一个群
  • 一个群有_许多博客，一个博客属于_一个群
  • 一个群属于_一个博客，一个博客有_一个群
  • 一个群属于_一个博客，一个博客有_多个群
  • 一个组 has_one_and_belongs_to_many 个博客，一个博客 has_one_and_belongs_to_many 个组

Ax belongs_to y意味着你的桌子上有y_id一个x。

Ax has_one y或x has_many y指定y每个的数量x。

Ax has_and_belongs_to_many y暗示x有 manyy和yhas_many x。

于 2013-03-20T14:42:09.247 回答