django 实现同一个ip十分钟内只能注册一次

class Ip(models.Model):
    ip=models.CharField(max_length=20)
    time=models.DateTimeField()
    class Meta:
        verbose_name = u'访问时间'
        verbose_name_plural = verbose_name
    def __str__(self):
        return self.ip

from django.views.generic.base import View
from blog.models import Ip
class RegView(View):
    def get(self,request):
        ipreques = request.META['REMOTE_ADDR']
        try:
            ip_c=Ip.objects.get(ip=ipreques)
            if ip_c :
                if (datetime.datetime.now()-ip_c.time).total_seconds()<600:
                    return render(request, 'login.html', {'msg': u'10分钟内只能注册一次'})
                ip_c.time=datetime.datetime.now()
                ip_c.save()
                return render(request, 'reg.html')
        except Exception as e:
            new=Ip()
            new.ip=str(ipreques)
            new.time=datetime.datetime.now()
            new.save()
            return render(request, 'reg.html')
    def post(self,request):
        username=request.POST['username']
        if len(getuser(username))<=0:
            return render(request,'reg.html',{'msg':u'用户名应该是6-16组成'})
        passwor1 = request.POST['password']
        passwor2 = request.POST['password1']
        shouj = request.POST['shouji']
        if len(getPhoneNumFromFile(shouj))<=0:
            return render(request, 'reg.html', {'msg':u'手机号格式是否正确'})
        shouji = User.objects.filter(mobile__exact=shouj)
        if shouji:
            return render(request, 'reg.html', {'msg': u'手机号已经存在'})
        youjian = request.POST['email']
        if len(getMailAddFromFile(youjian))<=0:
            return render(request, 'reg.html', {'msg': u'邮箱格式是否正确'})
        use=User.objects.filter(username__exact=username)
        if use:
            return render(request,'reg.html',{'msg':u'用户名已经存在'})
        else:
            if passwor1==passwor2:
                use1=User()
                use1.username=username
                use1.password=passwor1
                use1.mobile=shouj
                use1.email=youjian
                use1.save()
                return HttpResponseRedirect('login')
            else:
                return render(request,'reg.html',{'msg':u'请查看密码是否一致'})
        return render(request,'reg.html')