ruby-on-rails - 如何使用渲染 json : with active-model-serializers gem?

Question

我将 gem 'active_model_serializers', '~> 0.10.0' 用于 formart json，将 gem versionist 用于版本 api 管理器

我像这样为导出 json 编写克隆 Controller :

#app/v1/products_controller
class V1::ProductsController < V1::BaseController
  start_offset = params[:offset]
  max_products = Product.all.size
  products = Product.all.limit(Settings.limit_products_json).offset start_offset
  next_number = start_offset.to_i + Settings.limit_products_json

  if next_number < max_products
    render json: {
      products: products,
      next_products: Settings.next_products_json + next_number.to_s,
      product_end: Settings.product_end_false_json
    }
  else
    render json: {
      products: products,
      product_end: Settings.product_end_true_json,
      product_end_reason: Settings.product_end_reason_json
    }
  end
end

在我写的序列化程序文件夹中:

#serializers/v1/product_serializer.rb
class V1::ProductSerializer < ActiveModel::Serializer
  attributes :id, :name
end

result是Product的所有属性转json。但我只想将产品结果限制为 :id 和 :name，正如我在类 V1::ProductSerializer 中所写的那样。我怎样才能做到这一点？抱歉我的英语不好!

Answer 1

据我所知，active_model_serializers 不支持开箱即用的版本控制。将序列化程序重命名为 ProductSerializer 或明确指定 each_serializer 选项并将其他参数放入元数据中:

meta = if next_number < max_products
  {
    next_products: Settings.next_products_json + next_number.to_s,
    product_end: Settings.product_end_false_json
  }
else
  {
    product_end: Settings.product_end_true_json,
    product_end_reason: Settings.product_end_reason_json
  }
end

render json: products, each_serializer: V1::ProductSerializer, meta: meta