drf自定义筛选

1，表结构设计

•   不会经常变化的值放在内存：choices形式，避免跨表性能低
    分表：如果表中列太多，大量内容可以选择水平分表
    表自关联
  

2，一次增加两个表中的数据

•     def post(self, request, *args, **kwargs):
          ser = serializer.ArticleListSerializer(data=request.data)
          ser_content = serializer.AddArticleSerializer(data=request.data)
          if ser.is_valid() and ser_content.is_valid():
              article_obj = ser.save()
              ser_content.save(article=article_obj)
              return Response("添加成功")
          return Response("添加失败")

3，筛选

• 在文章列表时，添加筛选功能

•     def get(self, request, *args, **kwargs):
          pk = kwargs.get("pk")
          if not pk:
              # 筛选
              condition = {}
              category = request.query_params.get("category")
              if category:
                  condition["category"] = category
                  queryset = models.Article.objects.filter(**condition).order_by("-date")
              else:
                  queryset = models.Article.objects.all().order_by("-date")
              # 分页
              page_obj = PageNumberPagination()
              result = page_obj.paginate_queryset(queryset, request, self)
              ser = serializer.ArticleListSerializer(instance=result, many=True)
              return Response(ser.data)