django-TemplateDoesNotExist错误

Question

我正在通过构建简单产品库存管理器教程来学习Django Rest Framework入门 。 在教程的最后，它说我“现在应该能够运行您的服务器并开始使用不同的API端点”。 但是，当我运行服务器时，我得到的只是一个TemplateDoesNotExist错误。 在本教程中的任何时候都没有提到创建模板（最终将连接到Angular 2前端，如本教程中所示），因此我对于这是否是我的代码中的错误感到困惑，或者本教程走了一步。 运行代码时，我没有任何控制台错误。

serializers.py

from .models import Product, Family, Location, Transaction
from rest_framework import serializers

class LocationSerializer(serializers.ModelSerializer):
  class Meta:
    model = Location
    fields = ('reference', 'title', 'description')

class FamilySerializer(serializers.ModelSerializer):
  class Meta:
    model = Family
    fields = ('reference', 'title', 'description', 'unit', 'minQuantity')

class ProductSerializer(serializers.HyperlinkedModelSerializer):
  class Meta:
    model = Product
    fields = ('sku', 'barcode', 'title', 'description', 'location', 'family')
    depth = 1

class TransactionSerializer(serializers.ModelSerializer):
  product = ProductSerializer()
  class Meta:
    model = Transaction
    fields = ('sku', 'barcode', 'product')

views.py

from __future__ import unicode_literals

from django.shortcuts import render

from rest_framework import status, generics, mixins
from rest_framework.decorators import api_view
from rest_framework.response import Response

from .models import Product, Location, Family, Transaction
from .serializers import *

# Create your views here.

@api_view(['GET', 'POST'])
def product_list(request):
    """
    List all products, or create a new product.
    """
    if request.method == 'GET':
        products = Product.objects.all()
        serializer = ProductSerializer(products,context={'request': request} ,many=True)
        return Response(serializer.data)
    elif request.method == 'POST':
        serializer = ProductSerializer(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)

@api_view(['GET', 'PUT', 'DELETE'])
def product_detail(request, pk):
    """
    Retrieve, update or delete a product instance.
    """
    try:
        product = Product.objects.get(pk=pk)
    except Product.DoesNotExist:
        return Response(status=status.HTTP_404_NOT_FOUND)

    if request.method == 'GET':
        serializer = ProductSerializer(product,context={'request': request})
        return Response(serializer.data)

    elif request.method == 'PUT':
        serializer = ProductSerializer(product, data=request.data,context={'request': request})
        if serializer.is_valid():
            serializer.save()
            return Response(serializer.data)
        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)

    elif request.method == 'DELETE':
        product.delete()
        return Response(status=status.HTTP_204_NO_CONTENT)

class family_list(mixins.ListModelMixin, mixins.CreateModelMixin, generics.GenericAPIView):
    queryset = Family.objects.all()
    serializer_class = FamilySerializer

    def get(self, request, *args, **kwargs):
        return self.list(request, *args, **kwargs)

    def post(self, request, *args, **kwargs):
        return self.create(request, *args, **kwargs)

class family_detail(generics.RetrieveUpdateDestroyAPIView):
    queryset = Family.objects.all()
    serializer_class = FamilySerializer

    def get(self, request, *args, **kwargs):
        return self.retrieve(request, *args, **kwargs)

    def put(self, request, *args, **kwargs):
        return self.update(request, *args, **kwargs)

    def delete(self, request, *args, **kwargs):
        return self.destroy(request, *args, **kwargs)

class location_list(generics.ListCreateAPIView):
    queryset = Location.objects.all()
    serializer_class = LocationSerializer

class location_detail(generics.RetrieveUpdateDestroyAPIView):
    queryset = Location.objects.all()
    serializer_class =  LocationSerializer

class transaction_list(generics.ListCreateAPIView):
    queryset = Transaction.objects.all()
    serializer_class = TransactionSerializer

class transaction_detail(generics.RetrieveUpdateDestroyAPIView):
    queryset = Transaction.objects.all()
    serializer_class =  TransactionSerializer

如果您需要查看更多代码，请发表评论并将其发布，但是所有内容都应与本教程中给出的代码相同。

Answer 1

可能是您忘记了在已安装的应用程序（settings.py）中添加“ rest_framework”。

INSTALLED_APPS = (
    ...
    'rest_framework',
)

http://www.django-rest-framework.org/#installation