兰萨克（Ransack）寻找远处的桌子？

Question

I want to search orders by tags, but tags are associated with customers.... is it possible to do that with Ransack?

Order.rb

Class Order < ActiveRecord::Base
belongs_to :customer
 ....

Customer.rb

Class Customer < ActiveRecord::Base
has_many :orders
has_many :customers_tags
has_many :tags, through: :customers_tags
 ....

Tag.rb

Class Tag < ActiveRecord::Base
has_many :customers_tags
has_many :customers, through: :customers_tags
 ....

Answer 1

Yes, you can search through multiple associations. Just reference them as you would in the association name (plural for has_many , singular for belongs_to ).

So in your example, searching for a field fieldname , you would use:

customer_tags_fieldname_cont

(Replace fieldname with whatever field you want to search.)