add role param to list of users in user relation

apps/authorization/api/v1/api.py

@@ -20,6 +20,7 @@ from apps.authorization.models import (
     Page
 )
 from apps.core.exceptions import ConflictException
+from apps.core.mixins.search_mixin import DynamicSearchMixin
 from apps.core.mixins.soft_delete_mixin import SoftDeleteMixin
 
 
@@ -117,14 +118,31 @@ class PermissionViewSet(SoftDeleteMixin, viewsets.ModelViewSet):
         return Response(serializer.data)
 
 
-class UserRelationViewSet(SoftDeleteMixin, viewsets.ModelViewSet):
+class UserRelationViewSet(SoftDeleteMixin, viewsets.ModelViewSet, DynamicSearchMixin):
     """ Crud Operations for User Relations """
 
     queryset = UserRelations.objects.all()
     serializer_class = UserRelationSerializer
+    filter_backends = [filters.SearchFilter]
+    search_fields = [
+        'user__username',
+        'user__mobile',
+        'user__phone',
+        'user__national_code',
+        'user__province__name',
+        'user__city__name',
+        'role__name'
+    ]
 
     def list(self, request, *args, **kwargs):
-        queryset = self.filter_queryset(self.get_queryset().order_by('-create_date'))  # noqa
+        role_param = self.request.query_params.get('role')  # noqa
+
+        if role_param != '':
+            queryset = self.queryset.filter(role_id=int(role_param))
+        else:
+            queryset = self.get_queryset().order_by('-create_date')
+
+        queryset = self.filter_query(queryset)  # noqa
 
         page = self.paginate_queryset(queryset)
         if page is not None: