django - TemplateDoesNotExist错误

Question

我正在通过此Getting started with Django Rest Framework by Building a Simple Product Inventory Manager教程工作。在最后的教程中，它说我“现在应该能够运行你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，我得到的是一个TemplateDoesNotExist错误。在教程中没有提到创建模板（这最终将连接到Angular 2前端，如this tutorial所示），所以我很困惑这是否是我的代码中的错误，或者如果教程离开了一步。当我运行我的代码时，我没有遇到任何控制台错误。

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 

如果你需要看到更多的我的代码，请评论，我会发布，但一切都应该与教程中给出的代码相同。

Answer 1

可能会忘记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