七、判断用户名和手机号是否已经注册

1、用户名的判断

<1>注册子路由

urlpatterns = [
	# 获取数据，正则校验数据
    url(r"^usernames/(?P<username>\w+)/count/$", views.UserNameView.as_view())
    ]

<2>视图类的实现

class UserNameView(APIView):
    def get(self, request, username):
    	# 查找数据
        count = User.objects.filter(username=username).count()
        # 返回结果
        return Response({
            "count":count
        })

2、手机号的判断

<1>注册子路由

urlpatterns = [
    url(r"^mobiles/(?P<mobile>1[3-9]\d{9})/count/$", views.MobileView.as_view()),
    ]

<2>视图类的实现

class MobileView(APIView):
    def get(self, request, mobile):
        count = User.objects.filter(mobile=mobile).count()
        return Response({
            "count": count
        })