Improve type mismatch error

Author: AlanCoding

ansible_base/rbac/models/__init__.py

@@ -32,6 +32,7 @@ def get_evaluation_model(cls):
         # For proxy models, including django-polymorphic, use the id field from parent table
         # we accomplish this by inspecting the raw database type of the field
         pk_db_type = pk_field.db_type(connection)
+
     for eval_cls in (RoleEvaluation, RoleEvaluationUUID):
         if pk_db_type == eval_cls._meta.get_field('object_id').db_type(connection):
             return eval_cls
@@ -40,4 +41,4 @@ def get_evaluation_model(cls):
     if pk_db_type in ('bigint', 'integer', 'integer unsigned'):
         return RoleEvaluation
 
-    raise RuntimeError(f'Model {cls._meta.model_name} primary key type of {type(pk_field)} (db type {pk_db_type}) is not supported')
+    raise RuntimeError(f'Model {cls._meta.model_name} primary key type of {type(cls._meta.pk)} (db type {pk_db_type}) is not supported')