活動記錄關聯錯誤 - 未定義方法

Question

我有以下代碼行似乎工作正常。

<% current_user.blockedshows.map(&:tvshows).each_with_index do |blocked, index| %> 

然而，當我把它在blocked.title和image_tag(blocked.image)，（以下全碼），我收到以下錯誤：undefined method title for <ActiveRecord::Associations::CollectionProxy::ActiveRecord_Associations_CollectionProxy_Tvshow:0x007fd4e24b9448>

查看

<%= blocked.title %> 
<%= image_tag(blocked.image) %> </br> 

Tweets containing the following keywords will be removed from your timeline: </br> 

    <%@keywords = blocked.phrases.map(&:text) %> 
    <%=@keywords %> </br> 

Blockedshow型號

class Blockedshow < ActiveRecord::Base 
    has_many :tvshows 
    belongs_to :user 
end 

Tvshow模型

class Tvshow < ActiveRecord::Base 
    has_many :phrases 
    belongs_to :blockedshow 
end 

Tvshow表

class CreateTvShows < ActiveRecord::Migration 
    def change 
    create_table :tvshows do |t| 
     t.string :title 
     t.string :image 

     t.timestamps 
    end 
    end 
end 

Answer 1

這是因爲tvshows本身就是一個ActiveRecord關聯對象。 您還需要循環：

current_user.blockedshows.map(&:tvshows).each_with_index do |blocked, index| 
    blocked.each do |b| 
    <%= b.title %> 
    end 
end