- def save(self, db_conn: DatabaseConnection):
- """Add (or re-write) self to database."""
- db_conn.exec('REPLACE INTO days VALUES (?, ?)',
- (self.date, self.comment))
+ @property
+ def prev_date(self) -> str:
+ """Return date preceding date of this Day."""
+ prev_datetime = self.datetime - timedelta(days=1)
+ return prev_datetime.strftime(DATE_FORMAT)
+
+ @property
+ def next_date(self) -> str:
+ """Return date succeeding date of this Day."""
+ next_datetime = self.datetime + timedelta(days=1)
+ return next_datetime.strftime(DATE_FORMAT)
+
+ def save(self, db_conn: DatabaseConnection) -> None:
+ """Add (or re-write) self to DB and cache."""
+ self.save_core(db_conn, update_with_lastrowid=False)