我正在使用React前端和Django后端制作网页。我在运行我的后端时遇到了麻烦，因为事情应该没有定义。例如，我在尝试运行时收到此消息

python manage.py makemigrations

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获取错误，

name 'api_view' is not defined

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我能做些什么来修复它？

from django.http import HttpResponse
from .serializers import UserSerializer

def homePageView(request):
    return HttpResponse('Hello, World!')

# 
@api_view(['POST'])
def createUserView(request):
    # Create a new user 
    if request.method == 'POST':
        # Create serializer with data from new user object
        serializer = UserSerializer(data=request.data) #datafeltet inneholder json fra frontend, se eks. nederst
    if serializer.is_valid():
        # Save user
        serializer.save()
        return Response(serializer.data, status=status.HTTP_201_CREATED)
    return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)

    #return HttpResponse('User')

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