活动模型序列化程序格式化 JSON 显示

Question

我在我的 rails 应用程序中使用活动模型序列化器，我想重构显示：

每当我去 http://localhost:3000/api/users/1 我看到：

{"data":{"id":"1","type":"users","attributes":{"username":"Iggy1"},"relationships":{"items":{"data":[{"id":"1","type":"items"},{"id":"7","type":"items"}]},"lists":{"data":[{"id":"1","type":"lists"},{"id":"8","type":"lists"},{"id":"14","type":"lists"},{"id":"15","type":"lists"},{"id":"17","type":"lists"}]}}}}

我怎样才能让它看起来像：

{
    "data": {
        "id": "1",
        "type": "users",
        "attributes": {
            "username": "Iggy1"
        },
        "relationships": {
            "items": {
                "data": [{
                    "id": "1",
                    "type": "items"
                }, {
                    "id": "7",
                    "type": "items"
                }]
            },
            "lists": {
                "data": [{
                    "id": "1",
                    "type": "lists"
                }, {
                    "id": "8",
                    "type": "lists"
                }, {
                    "id": "14",
                    "type": "lists"
                }, {
                    "id": "15",
                    "type": "lists"
                }, {
                    "id": "17",
                    "type": "lists"
                }]
            }
        }
    }
}

我花了很多时间浏览 adapters, rendering, architecture，但找不到指南。首先，是否可以让它看起来像上面的第二个代码块？第二，如果可以的话，我必须怎么做才能改变显示？

api/users_controller.rb

   def show
     @user = User.find_by(id: params[:id])
     @no_user_found = User.all #other alternative when user ID not found?
     if @user.nil?
       flash[:notice] = "No user found"
       render json: @no_user_found, each_serializer: UserSerializer
     else
      render json: @user, each_serializer: UserSerializer
    end
   end

user_serializer.rb

class UserSerializer < ActiveModel::Serializer
   attributes :id, :username#, :email
   has_many :items, through: :lists
   has_many :lists
end

routes.rb

Rails.application.routes.draw do
  ActiveModelSerializers.config.adapter = :json_api
  namespace :api, defaults: { format: :json } do

     resources :users do
       resources :lists
     end

     resources :lists, only: [] do
       resources :items, only: [:create, :index, :show, :update]
     end

     resources :items, only: [:destroy]
   end
end

Answer 1

不使用浏览器，我建议使用 Postman pretty_generate.

您可以使用以下代码使用缩进和换行符呈现它：

<pre><%= JSON.pretty_generate(your_json_here) %></pre>

在您上面的代码中使用：

<%
  require 'json'

  hash = JSON[{"data":{"id":"1","type":"users","attributes":{"username":"Iggy1"},"relationships":{"items":{"data":[{"id":"1","type":"items"},{"id":"7","type":"items"}]},"lists":{"data":[{"id":"1","type":"lists"},{"id":"8","type":"lists"},{"id":"14","type":"lists"},{"id":"15","type":"lists"},{"id":"17","type":"lists"}]}}}}.to_json] 
%>

<pre>
  <%=  JSON.pretty_generate(hash)%>
</pre>

Answer 2

您的问题是关于 json 输出的样式。正如@araratan 上面所建议的那样，您可以使用它来只为您提供可读性。并且没有必要在机器上使用时尚。如果你需要在 thGenerate preety json outpur

中看到相同的外观

活动模型序列化程序格式化 JSON 显示

Active Model Serializer formatting JSON display

api

json

ruby-on-rails

active-model-serializers