replace @list_route and @detail_route with @action due to DRF deprecation

Author: n2ygk

example/api/resources/identity.py

@@ -1,14 +1,25 @@
 from django.contrib.auth import models as auth_models
 from django.utils import encoding
 from rest_framework import generics, parsers, renderers, serializers, viewsets
-from rest_framework.decorators import detail_route, list_route
 from rest_framework.response import Response
 
 from rest_framework_json_api import mixins, utils
 
 from ..serializers.identity import IdentitySerializer
 from ..serializers.post import PostSerializer
 
+try:
+    from rest_framework.decorators import action
+
+    def detail_route(**kwargs):
+        return action(detail=True, **kwargs)
+
+    def list_route(**kwargs):
+        return action(detail=False, **kwargs)
+
+except ImportError:
+    from rest_framework.decorators import detail_route, list_route
+
 
 class Identity(mixins.MultipleIDMixin, viewsets.ModelViewSet):
     queryset = auth_models.User.objects.all().order_by('pk')