views.py 文件源码

def book_year(request, year):
    """
    Retrieve, update or delete a book.
    """
    try:
        book = Book.objects.filter(year=year)
    except Book.DoesNotExist:
        return HttpResponse(status=404)

    if request.method == 'GET':
        serializer = BookSerializer(book)
        return JsonResponse(serializer.data)

    elif request.method == 'PUT':
        data = JSONParser().parse(request)
        serializer = BookSerializer(book, data=data)
        if serializer.is_valid():
            serializer.save()
            return JsonResponse(serializer.data)
        return JsonResponse(serializer.errors, status=400)

    elif request.method == 'DELETE':
        book.delete()
        return HttpResponse(status=204)