Django Rest Framework业务逻辑 [英] Django Rest Framework Business Logic

问题描述

我正在尝试使用 Django Rest Framework 创建一个后端，并试图确定将业务逻辑放置在哪里。它会出现在views.py中吗？我想创建更复杂的服务，而不仅仅是获取对象列表或获取一个特定对象。任何指导将不胜感激，谢谢。我意识到有一个关于通用Django项目中的业务逻辑的讨论，但是我特别询问django rest框架。

解决方案

更多的是设计模式，而不是Django Rest Framework。

这里有一些提示：

• 使用REST提供的接口不应涉及任何与数据操作或业务逻辑相关的特定代码。


• 使用MVC方法并不意味着您不应该对应用程序进行分层。


• 您应该能够测试您的业务逻辑，而无需完全触摸UI。


• 有些人可能建议将业务逻辑放入模型中。但是我不同意它们，因为Django模型不同于域模型和与业务相关的任务，例如税收计算。


• 在陷入MVC之前，您可以阅读有关
  
  
  

  假设您有一家在线咖啡店，您想提供一个REST API来订购咖啡。

  
  
  

  以下是我建议的代码示例：

  
  
  

  myapp / views.py：

    def订单（请求，数量= 1）：
  ＃通过调用来处理订单映射的方法
   order_id = CoffeeShopService.place_order（quantity）
  返回HttpResponse（{'order_id'：order_id，mimetype ='application / json'）
    

  myapp / services.py：

   类CoffeeShopService（对象）：
   @staticmethod 
   def place_order（数量）：
  ＃在这里进行业务逻辑
  返回order_id 
    

  
  

  I am trying to create a backend with Django Rest Framework and am trying to determine where to place the business logic. Would it go in the views.py? I would like to create more complex services than just getting a list of objects or grabbing one specific object. Any guidance would be appreciated, thanks. I realize there is a discussion about the business logic in a generic Django project but I am asking specifically about the django rest framework.

  解决方案

  It is more about design patterns rather than Django Rest Framework.

  Here are some tips:

  • Providing interfaces using REST should not involve any specific code related to data manipulation or business logic.
  • Using an MVC approach does not mean that you shouldn't layer your application.
  • You should be able to test your business logic without touching the UI at all.
  • Some people may suggest putting business logic in models. But I do not agree with them, since Django models are different from domain models and business related tasks such as tax calculation.
  • Before getting stuck in MVC, You could read more about The MVC implemented in MVC three-tier architecture
  • I suggest having a business layer and related apps putting your business logic there.

  Suppose that you have an online coffee shop & you'd like to provide a REST API for ordering coffees.

  Here are my suggested code samples:

  myapp/views.py:

      def order(request, quantity=1):
          # Process the order by calling the mapped method
          order_id = CoffeeShopService.place_order(quantity)
          return HttpResponse({'order_id': order_id, mimetype='application/json')
  

  myapp/services.py:

      class CoffeeShopService(object):
          @staticmethod
          def place_order(quantity):
             # do the business logic here
             return order_id
  

  这篇关于Django Rest Framework业务逻辑的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！