+
+
+class BaseModel:
+ """Template for most of the models we use/derive from the DB."""
+ table_name = ''
+ to_save: list[str] = []
+ id_: None | int | str
+
+ def set_int_id(self, id_: int | None) -> None:
+ """Set id_ if >= 1 or None, else fail."""
+ if (id_ is not None) and id_ < 1:
+ msg = f'illegal {self.__class__.__name__} ID, must be >=1: {id_}'
+ raise HandledException(msg)
+ self.id_ = id_
+
+ def save_core(self, db_conn: DatabaseConnection,
+ update_with_lastrowid: bool = True) -> None:
+ """Write bare-bones self (sans connected items), ensuring self.id_."""
+ q_marks = ','.join(['?'] * (len(self.to_save) + 1))
+ values = tuple([self.id_] + [getattr(self, key)
+ for key in self.to_save])
+ table_name = self.table_name
+ cursor = db_conn.exec(f'REPLACE INTO {table_name} VALUES ({q_marks})',
+ values)
+ if update_with_lastrowid:
+ self.id_ = cursor.lastrowid
+ cache = getattr(db_conn, f'cached_{table_name}')
+ cache[self.id_] = self