alchemy flush and save functions updated

databases/sql_models/sql_operations.py

@@ -24,13 +24,14 @@ class FilterAttributes:
     FilterModel = ListOptions
 
     def flush(self):
+        from fastapi import status
         """Flush the current session."""
         try:
             self.__session__.add(self)
             self.__session__.flush()
         except SQLAlchemyError as e:
             self.raise_http_exception(
-                status_code="HTTP_304_NOT_MODIFIED",
+                status_code="HTTP_400_BAD_REQUEST",
                 error_case=e.__class__.__name__,
                 data={},
                 message=str(e.__context__).split("\n")[0],
@@ -48,7 +49,7 @@ class FilterAttributes:
             cls.__session__.commit()
         except SQLAlchemyError as e:
             cls.raise_http_exception(
-                status_code="HTTP_304_NOT_MODIFIED",
+                status_code="HTTP_400_BAD_REQUEST",
                 error_case=e.__class__.__name__,
                 data={},
                 message=str(e.__context__).split("\n")[0],
@@ -92,10 +93,11 @@ class FilterAttributes:
 
     @classmethod
     def add_new_arg_to_args(cls, args_list, argument, value):
-        new_arg_list = list(
+        new_arg_list = list(set(
             args_ for args_ in list(args_list) if isinstance(args_, SQLColumnExpression)
-        )
-        if not any(True for arg in new_arg_list if arg.left.key == argument):
+        ))
+        arg_left = lambda arg_obj: getattr(getattr(arg_obj, "left", None), 'key', None)
+        if not any(True for arg in new_arg_list if arg_left(arg_obj=arg) == argument):
             new_arg_list.append(value)
         return tuple(new_arg_list)