Django rest-framework：如何让客户端知道pk，以便它可以获取，更新或删除

Question

django rest framework

I have two api

url(r'^testall/$',views.DataList.as_view()),
url(r'^testone/(?P<pk>[0-9]+)/$',views.DataDetail.as_view()),

I have a question ,the r'^testone/(?P<pk>[0-9]+)/$ url can get , update ,and delete

But the user have to know the pk
How can I let client know the pk is ??

views.py

class DataList(generics.ListCreateAPIView):
    queryset = Data.objects.all()
    serializer_class = DataSerializer
class DataDetail(generics.RetrieveUpdateDestroyAPIView):
    queryset = Data.objects.all()
    serializer_class = DataSerializer

This is my models

class Data(models.Model):

    mac_address = models.CharField(max_length=50, null=False, blank=False)
    datetime = models.DateTimeField(auto_now=False, auto_now_add=False)
    ...

I have a field mac_address ,which is unique and the client know that
I think maybe I can edit code to

 url(r'^testone/(?P<mac_address>\w+)/$',views.DataDetail.as_view())

But I got error:

Expected view DataDetail to be called with a URL keyword argument named "pk". Fix your URL conf, or set the `.lookup_field` attribute on the view correctly.   

And I'm not sure use the mac_address with : in url ( http://localhost:8000/test/A1:BC:34:WD:TT/ ) is a good idea Please guide me
Thank you very much

Answer 1

Here pk is lookup_field, when you call this url, url(r'^testall/$',views.DataList.as_view()) you will get response like

{'id': 4, 'mac_address': 3423, ..}

, here "id" is the "pk" This id can be used for calling

url(r'^testone/(?P<pk>[0-9]+)/$',views.DataDetail.as_view()),

And In views you can use mac_address as lookup_field,

url(r'^testone/(?P<mac_address>\w+)/$',views.DataDetail.as_view())

class DataDetail(generics.RetrieveUpdateDestroyAPIView):
    queryset = Data.objects.all()
    serializer_class = DataSerializer
    lookup_field = 'mac_address'

You can refer more http://www.django-rest-framework.org/api-guide/generic-views/#genericapiview