Question

我试图序列化嵌套集合。我有一个带图像的产品。但是，当我尝试使用has_many或显式方法在我的产品序列化程序中定义images属性时，我得到：

wrong number of arguments (0 for 1)

我本可以发誓这是可行的。我做错了吗？

这是我的代码：

class Api::V1::ProductSerializer < ActiveModel::Serializer
  attributes :id, :sku, :name, :description, :images

  def images
    object.images
  end
end

完全回溯

Started GET "/api/v1/products" for 10.0.2.2 at 2015-03-02 23:12:34 +0000
Processing by Api::V1::ProductsController#index as HTML
  User Load (0.7ms)  SELECT  "users".* FROM "users" INNER JOIN "tenant_users" ON "tenant_users"."user_id" = "users"."id" WHERE "tenant_users"."tenant_id" = 1 AND "users"."authentication_token" = 'pGJE5UWrxzJTEPxMyiez'  ORDER BY "users"."id" ASC LIMIT 1
   (0.3ms)  BEGIN
  SQL (0.4ms)  UPDATE "users" SET "current_sign_in_at" = $1, "last_sign_in_at" = $2, "sign_in_count" = $3, "updated_at" = $4 WHERE "users"."id" = 1  [["current_sign_in_at", "2015-03-02 23:12:34.913333"], ["last_sign_in_at", "2015-03-02 23:12:33.754114"], ["sign_in_count", 171], ["updated_at", "2015-03-02 23:12:34.914298"]]
   (0.7ms)  COMMIT
  Product Load (0.4ms)  SELECT "products".* FROM "products"  WHERE "products"."tenant_id" = 1
  Attachinary::File Load (0.5ms)  SELECT "attachinary_files".* FROM "attachinary_files"  WHERE "attachinary_files"."attachinariable_id" = $1 AND "attachinary_files"."attachinariable_type" = $2 AND "attachinary_files"."scope" = 'images'  [["attachinariable_id", 1], ["attachinariable_type", "Product"]]
Completed 500 Internal Server Error in 19ms

ArgumentError (wrong number of arguments (0 for 1)):
  app/controllers/api/v1/products_controller.rb:4:in `index'
  app/controllers/concerns/api/landlord.rb:13:in `require_tenant!'


  Rendered /usr/local/rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/actionpack-4.1.8/lib/action_dispatch/middleware/templates/rescues/_source.erb (0.4ms)
  Rendered /usr/local/rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/actionpack-4.1.8/lib/action_dispatch/middleware/templates/rescues/_trace.html.erb (1.1ms)
  Rendered /usr/local/rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/actionpack-4.1.8/lib/action_dispatch/middleware/templates/rescues/_request_and_response.html.erb (0.1ms)
  Rendered /usr/local/rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/actionpack-4.1.8/lib/action_dispatch/middleware/templates/rescues/diagnostics.erb within rescues/layout (11.7ms)

活动模型序列化程序 - 参数数量错误（0表示1）

0 个答案: