我是 Django 和 python 的新手。现在我正在尝试用 Django 和 python 做 web API。我可以得到get请求，但是当我请求post方法时，显示这个错误
"non_field_errors": [ "No data provided" ]
View.py=>
from rest_framework.generics import get_object_or_404
from rest_framework.views import APIView
from rest_framework.response import Response
from .models import Allowance
from .serializers import AllowanceSerializer
# Create your views here.
class AllowanceAPIView(APIView):
def get(self,request,pk=None):
if pk:
allowance=get_object_or_404(Allowance.objects.all(),pk=pk)
serializer = AllowanceSerializer(allowance)
return Response({serializer.data})
allowance=Allowance.objects.all()
serializer = AllowanceSerializer(allowance,many=True)
return Response({"allowance":serializer.data})
def post(self,request):
allowance = request.data.get('allowance')
serializer = AllowanceSerializer(data=allowance)
if serializer.is_valid(raise_exception=True):
allowance_saved=serializer.save()
return Response({"success":"Allowance '{}' created successfully".format(allowance_saved.AllowID)})
def put(self,request,pk):
save_allowance = get_object_or_404(Allowance.objects.all(),pk=pk)
data = request.data.get('allowance')
serializer = AllowanceSerializer(instance=save_allowance,data=data,partial=True)
if serializer.is_valid(raise_exception = True):
allowance_saved=serializer.save()
return Response({"sucess": "Allowance '{}' updated successfully".format(allowance_saved.AllowID)})
def delete(self,request,pk):
#Get object with this pk
allowance = get_object_or_404(Allowance.objects.all(),pk=pk)
allowance.delete()
return Response({"message":"Allowance with id '{}' has been deleted.".format(pk)},status=204)
应用内的 urls.py =>
from django.conf.urls import url
from .views import AllowanceAPIView
urlpatterns = [
url(r'^$', AllowanceAPIView.as_view(), name='post-listcreate'),
url(r'^(?P<pk>\d+)/$', AllowanceAPIView.as_view(), name='post-listcreate')
]
项目内的 urls.py =>
from django.conf.urls import url, include
from django.contrib import admin
from rest_framework_jwt.views import obtain_jwt_token
urlpatterns = [
url(r'^admin/', admin.site.urls),
# url(r'^api/auth/login/$', obtain_jwt_token, name='api-login'),
url(r'^api/allowances_mas/', include('tmswebapi.urls')),
]
示例 API 请求=>
{
"AllowID": "Allow1",
"AllowDesc": "Allow1 Description",
"AllowAmt": "11.00",
"AllowType": "MEAL",
"Created_DT": "2019-06-18T18:09:00Z",
"Created_Usr": "Admin",
"LastModified_Usr": "",
"LastModified_DT": "2019-06-18T18:09:00Z"
}
序列化器=>
from rest_framework import serializers
import datetime
from .models import Allowance
class AllowanceSerializer(serializers.ModelSerializer):
class Meta:
model=Allowance
fields = "__all__"
def create(self,validated_data):
return Allowance.objects.create(**validated_data)
def update(self,instance,calidated_data):
instance.AllowDesc = validated_data.get('AllowDesc',instance.AllowDesc)
instance.AllowAmt = validated_data.get('AllowAmt',instance.AllowAmt)
instance.AllowType = validated_data.get('AllowType',instance.AllowType)
instance.LastModified_Usr = "Admin"
instance.LastModified_DT = datetime.datetime.now()
instance.save()
return instance
是因为url还是因为数据格式？
请您参考如下方法:
它从 if serializer.is_valid(raise_exception = True): 行返回错误。
这意味着 data 在某处是 None。
调试代码以确保 data 变量有数据
