python - DRF request handler is throwing exception: retrieve() got an unexpected keyword argument 'pk' -


i'm trying retrieve model instance in django rest framework 3.6.3 @ /path/to/api/widget/1/, 1 being primary key of widget. it's giving me:

retrieve() got unexpected keyword argument 'pk'

from trace think i'm doing cause dispatch throw exception when instantiating handler (from views.py, source here). don't understand i'm doing wrong through when examine source. here's trace:

traceback:

file "/lib/python3.5/site-packages/django/core/handlers/exception.py" in inner   41.             response = get_response(request)  file "/lib/python3.5/site-packages/django/core/handlers/base.py" in _legacy_get_response   249.             response = self._get_response(request)  file "/lib/python3.5/site-packages/django/core/handlers/base.py" in _get_response   187.                 response = self.process_exception_by_middleware(e, request)  file "/lib/python3.5/site-packages/django/core/handlers/base.py" in _get_response   185.                 response = wrapped_callback(request, *callback_args, **callback_kwargs)  file "/lib/python3.5/site-packages/django/views/decorators/csrf.py" in wrapped_view   58.         return view_func(*args, **kwargs)  file "/lib/python3.5/site-packages/rest_framework/viewsets.py" in view   86.             return self.dispatch(request, *args, **kwargs)  file "/lib/python3.5/site-packages/rest_framework/views.py" in dispatch   489.             response = self.handle_exception(exc)  file "/lib/python3.5/site-packages/rest_framework/views.py" in handle_exception   449.             self.raise_uncaught_exception(exc)  file "/lib/python3.5/site-packages/rest_framework/views.py" in dispatch   486.             response = handler(request, *args, **kwargs)  exception type: typeerror @ /path/to/api/widget/1/ exception value: retrieve() got unexpected keyword argument 'pk'

here's view viewset:

def retrieve(self, request, some_lookup_field=none):     instance = self.get_object(pk) # handle multi-tenant access control     if not instance:         return response(status=status.http_404_not_found)     serializer = self.get_serializer(instance) # class's `serializer_cass` attribute     return response(serializer.data)

as see in stacktrace, error is:

retrieve() got unexpected keyword argument 'pk'.

look closely in retrieve() function:

def retrieve(self, request, some_lookup_field=none):     # ____________________________^     instance = self.get_object(pk) # handle multi-tenant access control     # _________________________^     ...

you taking some_lookup_field parameter , not pk, use below in self.get_object(pk). try rename some_lookup_field pk.


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