从关联方法内访问Rails proxy_association.owner

Question

是否有方法从关联方法内访问proxy_association对象？

例子：

class User < ActiveRecord:Base 
    has_many :accounts 
end 

class Account < ActiveRecord:Base 
    belongs_to :user 

    def some_function 
    # Here I want to access the same user object the association was called on 
    # (that holds all already defined global variables), not a newly created object 
    # through self.user (where all global variables are reset). 

    proxy_association.owner 
    end 
end 

如何访问一个协会是由该协会中呼吁的对象？不幸的是，self.user返回一个新对象，其中所有先前设置的变量都恢复为默认值。

Answer 1

使用has_many关联中的:inverse_of选项。这将在使用关联时连接内存中的两个模型。

class User < ActiveRecord:Base 
    has_many :accounts, inverse_of: :user 
end 

来源： http://api.rubyonrails.org/classes/ActiveRecord/Associations/ClassMethods.html#method-i-has_many