Update admin.py

src/registrar/admin.py

@@ -20,6 +20,25 @@ from django_fsm import TransitionNotAllowed  # type: ignore
 
 logger = logging.getLogger(__name__)
 
+class OrderableFieldsMixin:
+    orderable_fk_fields = []
+
+    def __new__(cls, *args, **kwargs):
+        new_class = super().__new__(cls)
+        for field, sort_field in cls.orderable_fk_fields:
+            setattr(new_class, f'get_{field}', cls._create_orderable_field_method(field, sort_field))
+        return new_class
+
+    @classmethod
+    def _create_orderable_field_method(cls, field, sort_field):
+        def method(obj):
+            attr = getattr(obj, field)
+            return attr
+        method.__name__ = f'get_{field}'
+        method.admin_order_field = f'{field}__{sort_field}'
+        method.short_description = field.replace('_', ' ').title()
+        return method
+
 
 class CustomLogEntryAdmin(LogEntryAdmin):
     """Overwrite the generated LogEntry admin class"""
@@ -543,26 +562,6 @@ class DomainApplicationAdminForm(forms.ModelForm):
                 self.fields["status"].widget.choices = available_transitions
 
 
-class OrderableFieldsMixin:
-    orderable_fields = []
-
-    def __new__(cls, *args, **kwargs):
-        new_class = super().__new__(cls)
-        for field, sort_field in cls.orderable_fields:
-            setattr(new_class, f'get_{field}', cls._create_orderable_field_method(field, sort_field))
-        return new_class
-
-    @classmethod
-    def _create_orderable_field_method(cls, field, sort_field):
-        def method(obj):
-            attr = getattr(obj, field)
-            return attr
-        method.__name__ = f'get_{field}'
-        method.admin_order_field = f'{field}__{sort_field}'
-        method.short_description = field.replace('_', ' ').title()
-        return method
-
-
 class DomainApplicationAdmin(ListHeaderAdmin, OrderableFieldsMixin):
 
     """Custom domain applications admin class."""
@@ -577,7 +576,7 @@ class DomainApplicationAdmin(ListHeaderAdmin, OrderableFieldsMixin):
         "get_investigator",
     ]
 
-    orderable_fields = [
+    orderable_fk_fields = [
         ('requested_domain', 'name'),
         # TODO figure out sorting twice at once
         ("submitter", "first_name"),