未初始化常量 API::V1::ApplicationSerializer

Question

我開始使用gem 'active_model_serializers', '~> 0.10.0' 。 按照本文檔執行。

我有以下關系。

landmark has_many concerns
concern belongs_to landmark
concern has_many comments 

我在app/serializers/api/application_serializer.rb創建了一個ApplicationSerializer

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

我的關注序列化程序包含：

# ===> 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

在上面的代碼中，如果我用ActiveModel::Serializer替換ApplicationSerializer它可以正常工作，但是我丟失了ApplicationSerializer中定義的通用代碼。

Answer 1

看起來像一個自動加載問題。 ApplicationSerializer應該在它自己的文件<serializers directory>/api/application_serializer.rb （確保在app中創建目錄后重新啟動 server/spring 以便它們被自動加載器拾取）

您也可以使用絕對 class 名稱來引用它： ::API::ApplicationSerializer