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我有以下型号ActiveAdmin:排序关联计数
class User < ActiveRecord::Base
has_many :reviews
end
class Review < ActiveRecord::Base
belongs_to :user
end
我想你认为每个用户 拥有的数量我ActiveDdmin页面上的用户进行排序。
我想这一点,但没有运气:(从this SO question)
ActiveAdmin.register User do
filter :name
index do
column :name
column :email
column "Facebook" do |u|
if u.provider == "facebook"
"Yes"
end
end
column "No. of reviews", :sortable => :"reviews.count" do |u|
u.reviews.count
end
end
controller do
def scoped_collection
end_of_association_chain.includes(:reviews)
end
end
end