ActiveScaffold -更改关联对象的默认名称

Question

我的模型"combobox" has_many "comboboxselects"和"comboboxselects" belongs_to "combobox"。"comboboxes“的Activescaffold在comboboxselects column中显示数据，就像"#<Comboboxselect:0x472d25c>"。如何显示“comboxselect”表中的"answer“列？

型号：

class Combobox < ActiveRecord::Base
 has_many :comboboxselects
end

class Comboboxselect < ActiveRecord::Base
 belongs_to :combobox
end

模式：

  create_table "comboboxes", :force => true do |t|
   t.string   "question"
   t.datetime "created_at"
   t.datetime "updated_at"
  end

  create_table "comboboxselects", :force => true do |t|
   t.integer  "combobox_id"
   t.string   "answer"
   t.datetime "created_at"
   t.datetime "updated_at"
  end

输出：

class ComboboxesController < ApplicationController
 active_scaffold :combobox do |config|
   config.list.columns = [:id, :question]
   config.columns = [:question, :comboboxselects]
 end
end

class ComboboxselectsController < ApplicationController
 active_scaffold :comboboxselect  do |config|
   config.list.columns = [:id, :combobox, :answer]
   config.columns = [:answer]
 end
end

Answer 1

首先，config.list.columns中引用的所有字段都必须包含在config.columns中(任何显式定义的config.*.columns字段都必须是config.columns的子集)。

然后，在每个还没有name、title字段或方法的模型中，您必须声明此自定义方法：

class Comboboxselect < ActiveRecord::Base
 belongs_to :combobox
 def to_label
  "#{answer}" 
 end
end

请参阅ActiveScaffold文档：Describing Records: to_label

Answer 2

当您说显示时，我假设您是指在视图中？你能在你运行的时候发布代码以获得输出吗？

在我看来，你只是有了Comboboxselect对象，你有没有试过向它添加.answer来访问你想要的属性？