fix - show org type by binary childs

apps/authentication/api/v1/api.py

@@ -207,7 +207,7 @@ class ProvinceViewSet(SoftDeleteMixin, ModelViewSet):
     serializer_class = ProvinceSerializer
 
 
-class OrganizationTypeViewSet(SoftDeleteMixin, ModelViewSet):
+class OrganizationTypeViewSet(BaseViewSet, SoftDeleteMixin, ModelViewSet):
     """ Crud operations for Organization Type model """  #
     queryset = OrganizationType.objects.all()
     serializer_class = OrganizationTypeSerializer

apps/authentication/services/service.py

@@ -1,6 +1,6 @@
 import typing
 
-from apps.authentication.models import Organization
+from apps.authentication.models import Organization, OrganizationType
 
 
 def get_users_of_organization(org: Organization) -> typing.Any:
@@ -28,3 +28,15 @@ def get_all_org_child(org: Organization = None) -> typing.Any:
         descendants.append(child)
         descendants.extend(get_all_org_child(child))
     return descendants
+
+
+def get_all_org_type_child(org_type: OrganizationType = None) -> typing.Any:
+    """
+    get all child of an organization
+    """
+    descendants = []
+    children = org_type.children.all()
+    for child in children:
+        descendants.append(child)
+        descendants.extend(get_all_org_type_child(child))
+    return descendants