django 关联表查询

django 关联表查询

1.新建serializers.py文件
		from rest_framework import serializers
		from .models import Grade,Course,Student,OnLine
		class StudentSerialize(serializers.ModelSerializer):
		    class Meta:
		        model = Student	  # 要查找的表
		        fields = '__all__'   # 查询内容 __all__表示所有
		        depth = 1				# 层级 表示查几层


2. view.py 内容
		from .models import Grade,Course,Student,OnLine
		from .serializers import OnLineSerialize
		class orm(APIView):
		    def get(self,request):
		        dataList = OnLine.objects.all()
		        ret = OnLineSerialize(dataList,many=True)
		        return Response(ret.data)