:32:in `alias_method': undefined method `graft' for class `ActiveRecord::Associations::JoinDependency/aliasing.rb:32:in `alias_method_chain'
[RVM]/gems/ruby-2.0.0-p247/gems/polyamorous-0.6.4/lib/polyamorous/dependencie
我使用的是Rails 4.2.10。我有以下型号的… class Order < ActiveRecord::Base has_many :products
class Product < ActiveRecord::Basebelongs_to :manufacturer 但是,当我想搜索具有特定名称的匹配制造商的订单时,我得到这个错误... > o = Order.includes(products: :manufacturer/lib/squeel</em
`admin_contact` AS `admin_contact`, `programmes`.`admin_contact` AS `admin_contact`, `programmes`.2.2.7/lib/ruby/gems/2.2.0/gems/polyamorous-1.3.1/lib/polyamorous/activerecord_5.1_ruby_2/