Rails 3，ActiveAdmin自定义过滤器 [英] Rails 3, ActiveAdmin custom filter

问题描述

我有3个相关模型：

class Brand < ActiveRecord::Base
  has_many :car_models
end

class CarModel < ActiveRecord::Base
  has_many :production_years
  belongs_to :brand
end

class ProductionYear < ActiveRecord::Base
  belongs_to :car_model
end

所以，我怎么能如果要按品牌进行过滤，请在ActiveAdmin production_year部分中进行自定义过滤器？那里的默认过滤器：car_model select和year value

So, how i can make custom filter in ActiveAdmin production_year section, if i want make filtering by Brand? Default filters there: car_model select and year value

推荐答案

您尝试过类似的东西吗？

Did you try something like this?

ActiveAdmin.register ProductionYear do
  filter :brand, :as => :check_boxes, :collection => proc { Brand.all }
end

编辑哎呀，我没有注意到您的协会，我认为如果将其添加到ProductionYear类中，则效果会更好：

EDIT oops I didn't notice the complexity of your association, I think if you add this to your ProductionYear class things should work better:

class ProductionYear < ActiveRecord::Base
   belongs_to :car_model
   has_one :brand, :through => :car_model
end

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