[英]How to includes associated models in active_admin
In a Rails application, I have two models like this : 在Rails应用程序中,我有两个这样的模型:
class Painting < ActiveRecord::Base
belongs_to :artist
end
class Artist < ActiveRecord::Base
belongs_to :country
def display_name
text = to_s
if birth_year
death = death_year || "----"
text += " (#{birth_year}-#{death})"
end
text += ", #{country.name}"
end
end
class Country < ActiveRecord::Base
active_admin_translates :name
end
I use active admin like this 我这样使用活动管理员
ActiveAdmin.register Painting do
end
The problem is than the display_name
method need to call countries and translations tables. 问题在于, display_name
方法需要调用国家和翻译表。 There is a lot of artists and it's very long to run. 有很多艺术家,而且运行时间很长。 I'm looking for a way to to increase the speed. 我正在寻找提高速度的方法。
Request seems like this : 请求看起来像这样:
SELECT "artists".* FROM "artists" WHERE "artists"."accepted" = 't' ORDER BY name
SELECT "countries".* FROM "countries" WHERE "countries"."id" = 50 ORDER BY name LIMIT 1
All artists are requested to do this input : 请所有艺术家输入以下内容:
What can I do? 我能做什么?
Have you tried setting the scoped_collection on the controller? 您是否尝试过在控制器上设置scoped_collection?
I think it's something like this: 我认为是这样的:
ActiveAdmin.register Painting do
controller do
def scoped_collection
Painting.joins({artist: {country: :translations}})
end
end
end
More info available here: http://www.activeadmin.info/docs/2-resource-customization.html 此处提供更多信息: http : //www.activeadmin.info/docs/2-resource-customization.html
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