django中返回json操作

方式一、直接使用HttpResponse和json模块返回

• 1、导包

  import json
  
  from django.http import HttpResponse
  from django.views.generic import View
  
  from goods import models
  

• 2、视图的返回

  class GoodView(View):
      """
      定义一个产品的view
      """
  
      def get(self, request, *args, **kwargs):
          json_list = []
          goods = models.GoodsModel.objects.all()[:10]
  
          for good in goods:
              json_dict = {}
              json_dict['name'] = good.name
              json_dict['goods_num'] = good.goods_num
              # 返回一个dict-list(俗称对象数组)
              json_list.append(json_dict)
          return HttpResponse(json.dumps(json_list, ensure_ascii=False, indent=2), content_type='application/json')
  

方式二、使用model_to_dict来返回

• 1、导包

  import json
  
  from django.http import HttpResponse
  from django.views.generic import View
  from django.forms.models import model_to_dict
  
  from goods import models
  

• 2、视图类中书写

  class GoodView1(View):
      """
      定义一个产品分类视图
      """
  
      def get(self, request, *args, **kwargs):
          json_list = []
          goods = models.GoodsCategoryModel.objects.all()[:10]
  
          for good in goods:
              json_dict = model_to_dict(good)
              # 返回一个dict-list(俗称对象数组)
              json_list.append(json_dict)
          return HttpResponse(json.dumps(json_list, ensure_ascii=False, indent=2), content_type='application/json')
  

方式三、使用django的序列化serializers

• 1、导包

  from django.core import serializers
  from django.http import HttpResponse
  from django.views.generic import View
  from goods import models
  

• 2、视图类

  class GoogView2(View):
      """
      定义一个产品视图
      """
  
      def get(self, request, *args, **kwargs):
          goods = models.GoodsModel.objects.all()[:10]
          json_data = serializers.serialize('json', goods)
          return HttpResponse(json_data, content_type='application/json')
  

方式四、直接返回json

• 1、导包

  import json
  from django.core import serializers
  from django.http import HttpResponse, JsonResponse
  from django.views.generic import View
  from goods import models
  

• 2、视图类

  class GoogView2(View):
      """
      定义一个产品视图
      """
  
      def get(self, request, *args, **kwargs):
          goods = models.GoodsModel.objects.all()[:10]
          json_data = serializers.serialize('json', goods)
          return JsonResponse(json.loads(json_data, encoding='utf-8'), safe=False)