无法导入名称DurationField

我想运行一个应用程序，它使用django rest framework.However是得到导入错误“无法导入名称DurationField”。如何解决此错误？无法导入名称DurationField

Views.py

from django.shortcuts import render 
from django.contrib.auth.models import User 
from django.http import Http404 

from restapp.serializers import UserSerializer 
from rest_framework.views import APIView 
from rest_framework.response import Response 
from rest_framework import status 


class UserList(APIView): 

#List all user,create new one 
def get(self,request,format=None): 
    users = User.objects.all() 
    serializer = UserSerializer(users,many=True) 
    return Response(serializer.data) 

def post(self,request,format=None): 
    serializer= UserSerializer(data=request.DATA) 
    if serializer.is_valid(): 
     serializer.save() 
     return Response(serializer.data, status=status.HTTP_201_CREATED) 
    return Response(serializer.errors,status=status.HTTP_400_BAD_REQUEST) 

def delete(self,request,pk, format=None): 
    user = self.get_object(pk) 
    user.delete() 
    return Response(status=status.HTTP_204_NO_CONTENT) 

class UserDetail(APIView): 

#Retrive update,or delete a user instance 

def get_object(self,pk): 
    try: 
     return User.objects.get(pk=pk) 
    except user.DoesNotExist: 
     raise 404 

def get(self,request,pk,format=None): 
    user = self.get_object(pk) 
    user = UserSerializer(user) 
    return Response(user.data) 

def put(self,request,pk,format=None): 
    user = self.get_object(pk) 
    serializer=UserSerializer(user,data = request.DATA) 
    if serializer.is_valid(): 
     serializer.save() 
     return Response(serializer.data) 
    return Response(serializer.errors,status=status.HTTP_400_BAD_REQUEST) 


def delete(self,request,pk,format=None): 
    user = self.get_object(pk) 
    user.delete() 
    return Response(status=status.HTTP_204_NO_CONTENT)

serializers.py

from django.contrib.auth.models import User 
from rest_framework import serializers 

class UserSerializer(serializers.ModelSerializer): 
    class Meta: 
    model = User 
    fields = ('id','username','firstname','last_name','email')

它指向该文件serializers.py，线18作为误差的来源。

enter image description here

来源

2016-08-13 brxy

你在哪里使用'DurationField' - 无法在代码中找到。 – masnun

它指向一个附带django rest框架的文件（serializers.py，第18行）。我添加了sceenshot，看一看。 – brxy

从截图，我可以看到你使用Django 1.7。

由DRF导入的DurationField在Django 1.8中引入。

所以你必须升级你的Django才能使这个版本的DRF工作。

来源

2016-08-13 11:34:29 masnun

无法导入名称DurationField

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