使用active_model_serializers序列化模型数组

我试图使用gem active_model_serializers将模型的序列化版本作为参数发送到视图

 #app/serializers/admin_serializer.rb class AdminSerializer  true).page(params[:page]).per(10) @page_entries_info = view_context.page_entries_info @admins # render json: @admins respond_to do |format| format.html format.js format.json {render json: @admins} end end #app/views/dashboard/admins/index.html.erb   

以上调试产生以下响应：

 --- '{"data":{"id":"1","type":"admins","attributes":{"email":"[e-mail]","access_locked?":false}}}' //returned by the first debug --- - '{"object":{"id":36,"email":"[e-mail]","created_at":"2016-03-28T05:15:17.546Z","updated_at":"2016-03-28T05:15:17.546Z"},"instance_options":{},"root":null,"scope":null}' - '{"object":{"id":20,"email":"[e-mail]","created_at":"2016-03-28T05:15:16.304Z","updated_at":"2016-03-28T05:15:16.304Z"},"instance_options":{},"root":null,"scope":null}' - '{"object":{"id":22,"email":"[e-mail]","created_at":"2016-03-28T05:15:16.459Z","updated_at":"2016-03-28T05:15:16.459Z"},"instance_options":{},"root":null,"scope":null}' - '{"object":{"id":37,"email":"[e-mail]","created_at":"2016-03-28T05:15:17.624Z","updated_at":"2016-03-28T05:15:17.624Z"},"instance_options":{},"root":null,"scope":null}' - '{"object":{"id":5,"email":"[e-mail]","created_at":"2016-03-28T05:15:15.139Z","updated_at":"2016-03-28T05:15:15.139Z"},"instance_options":{},"root":null,"scope":null}' - '{"object":{"id":14,"email":"[e-mail]","created_at":"2016-03-28T05:15:15.838Z","updated_at":"2016-03-28T05:15:15.838Z"},"instance_options":{},"root":null,"scope":null}' - '{"object":{"id":27,"email":"[e-mail]","created_at":"2016-03-28T05:15:16.848Z","updated_at":"2016-03-28T05:15:16.848Z"},"instance_options":{},"root":null,"scope":null}' - '{"object":{"id":2,"email":"[e-mail]","created_at":"2016-03-28T05:15:14.873Z","updated_at":"2016-03-28T05:15:14.873Z"},"instance_options":{},"root":null,"scope":null}' - '{"object":{"id":10,"email":"[e-mail]","created_at":"2016-03-28T05:15:15.527Z","updated_at":"2016-03-28T05:15:15.527Z"},"instance_options":{},"root":null,"scope":null}' - '{"object":{"id":15,"email":"[e-mail]","created_at":"2016-03-28T05:15:15.916Z","updated_at":"2016-03-28T05:15:15.916Z"},"instance_options":{},"root":null,"scope":null}' 

在第一个调试中，我只序列化一个对象，而在第二个调试中，我正在尝试为一个对象数组执行此操作。 第一个调试正确地返回对象的序列化版本（以json_api格式），而第二个调试则没有。 尝试使用ArraySerializer，但没有成功： ActiveModel::Serializer::ArraySerializer.new(@admins, each_serializer: AdminSerializer).as_json如何实现所需的序列化。 而且，如果实现了，我可以使用其他一些简化版吗？ 因为这个调试语句太冗长了。

尝试了这里提到的所有解决方案 – 如何使用ActiveRecord :: Relation数组初始化ActiveModel :: Serializer类？

我试图解决的基本问题是，在Admin控制器的索引方法中，Admin对象作为PORO传递给index.html文件。 但我想要这个对象的序列化json版本，以便我可以将它作为prop传递给我的react组件

index方法是在解雇http://dashboard.localhost.com:3000/admins.json时呈现正确的json

索引方法更新＃1

 def index @search = Admin.search(params[:q]) @admins_array = @search.result(:distinct => true).to_a if params[:page] @admins = @search.result(:distinct => true).page(params[:page][:number]).per(10) @admins_json_array = Kaminari.paginate_array(@admins_array).page(params[:page][:number]).per(10) else @admins = @search.result(:distinct => true).page(1).per(10) @admins_json_array = Kaminari.paginate_array(@admins_array).page(1).per(10) end @admins_json = ActiveModel::SerializableResource.new(@admins_json_array.to_a) ... ... ... end 

Answer 1

由于需要默认序列化程序的不同属性，我需要指定序列化程序的控制器。

在控制器中：

  def index search = User.ransack(search_params) render json: search.result, each_serializer: MembershipRenewalSerializer::MemberSerializer end 

所以，只是为了让事情有效，如果指定each_serializer选项会发生什么？

编辑：

外部控制器：

 ActiveModel::SerializableResource.new( User.first(2), each_serializer: MembershipRenewalSerializer::MemberSerializer ).to_json 

注意，如果没有指定each_serializer ， SerializableResource将使用UserSerializer 。

编辑＃2，

看起来@admins数据发生了一些奇怪的事情。

尝试转换为数组：

 ActiveModel::SerializableResource.new(@admins.to_a).to_json 

编辑＃3

要对数组进行分页，请尝试以下操作：

 @search = Admin.search(params[:q]) @results = @search.result(:distinct => true).to_a @admins = Kaminari.paginate_array(@results).page(params[:page]).per(10) 

Answer 2

按照指南： 在控制器渲染之前进行序列化

你可以使用ActiveModel::SerializableResource.new(@admins, adapter: :json_api).to_json

在index.html.erb

 <%= debug (ActiveModel::SerializableResource.new(@posts, adapter: :json_api).to_json) %> 

以下是输出（使用post）

 '{"data":[{"id":"1","type":"posts","attributes":{"title":"first post","body":null}},{"id":"2","type":"posts","attributes":{"title":"second post","body":null}}],"links":{}}