refactor(SQL): Staging tables and Calc stored procedures used for modular stored procedure archicture for scalability. Implemented for Product Catalogue. \n BREAKING CHANGE: BIT argument a_debug added to all but basic stored procedures for analysis of performance and results.

models/model_view_user.py

@@ -14,8 +14,12 @@ Data model for user view
 from models.model_view_base import Model_View_Base
 # from routes import bp_home
 # external
+from typing import ClassVar
 
 class Model_View_User(Model_View_Base):
+    FLAG_ERROR_OAUTH: ClassVar[str] = 'error'
+    FLAG_ERROR_DESCRIPTION_OAUTH: ClassVar[str] = 'error_description'
+    FLAG_STATE_OAUTH: ClassVar[str] = 'state'
     # Attributes
     @property
     def title(self):