未初始化常量 API::V1::ApplicationSerializer

Question

我开始使用gem 'active_model_serializers', '~> 0.10.0' 。 按照本文档执行。

我有以下关系。

landmark has_many concerns
concern belongs_to landmark
concern has_many comments 

我在app/serializers/api/application_serializer.rb创建了一个ApplicationSerializer

module API
  class ApplicationSerializer < ActiveModel::Serializer
     # some commode here
  end
end

我的关注序列化程序包含：

# ===> Does not work <=====
module API::V1
  class ConcernSerializer < ApplicationSerializer
    attributes :id, :body
    has_many :comments
    belongs_to :landmark

    class CommentSerializer < ApplicationSerializer
      attributes :id, :body
    end

    class LandmarkSerializer < ApplicationSerializer
      attributes :id, :short_address
    end

  end
end


# ====> However, this works <====
module API::V1
  class ConcernSerializer < ApplicationSerializer
    attributes :id, :body
    has_many :comments

    class CommentSerializer < ActiveModel::Serializer
      attributes :id, :body
    end

  end
end

# ===> Does not work again<=====
module API::V1
  class ConcernSerializer < ApplicationSerializer
    attributes :id, :body
    has_many :comments
    belongs_to :landmark

    class CommentSerializer < ActiveModel::Serializer
      attributes :id, :body
    end

    class LandmarkSerializer < ActiveModel::Serializer
      attributes :id, :short_address
    end

  end
end

在上面的代码中，如果我用ActiveModel::Serializer替换ApplicationSerializer它可以正常工作，但是我丢失了ApplicationSerializer中定义的通用代码。

Answer 1

看起来像一个自动加载问题。 ApplicationSerializer应该在它自己的文件<serializers directory>/api/application_serializer.rb （确保在app中创建目录后重新启动 server/spring 以便它们被自动加载器拾取）

您也可以使用绝对 class 名称来引用它： ::API::ApplicationSerializer