Question

我有以下

class Service < ActiveRecord::Base
  has_many :service_testimonials, class_name: 'Service::Testimonial', dependent: :destroy
  has_many :testimonials, through: :service_testimonials
end

class Service::Testimonial < ActiveRecord::Base
  belongs_to :service
  belongs_to :testimonial
end

class Testimonial < ActiveRecord::Base

  has_many :service_testimonials, class_name: 'Service::Testimonial', dependent: :destroy
  has_many :services, through: :service_testimonials
end

但如果我Service.first.testimonials，那么sql是SELECT "service_testimonials".* FROM "service_testimonials" INNER JOIN "service_testimonials" "service_testimonials_testimonials_join" ON "service_testimonials"."id" = "service_testimonials_testimonials_join"."testimonial_id" WHERE "service_testimonials_testimonials_join"."service_id" = $1 [["service_id", 1]]

因此，它会返回Service::Testimonial而不是Testimonial的集合，向通过添加class_name无效。我可以让这个工作吗？或者我只是需要重命名我的模型？

Answer 1

您需要在Service::Testimonial课程中进行更改：

class Service::Testimonial < ActiveRecord::Base
  belongs_to :service, class_name: '::Service'
  belongs_to :testimonial, class_name: '::Testimonial'
end

那些class_name是强制性的，因为Rails assumes，您正在寻找同一名称空间中的类。因此，例如声明belongs_to :service将被解释为belongs_to :service, class_name: 'Service::Service'，这显然不是您的意图。

在名称空间模型

1 个答案: