self.description = VersionedAttribute(self, 'condition_descriptions',
'')
+ def __lt__(self, other: Condition) -> bool:
+ assert isinstance(self.id_, int)
+ assert isinstance(other.id_, int)
+ return self.id_ < other.id_
+
@classmethod
def from_table_row(cls, db_conn: DatabaseConnection,
row: Row | list[Any]) -> Condition:
self.description.save(db_conn)
def remove(self, db_conn: DatabaseConnection) -> None:
- """Remove from DB, with dependencies."""
- assert isinstance(self.id_, int)
+ """Remove from DB, with VersionedAttributes.
+
+ Checks for Todos and Processes that depend on Condition, prohibits
+ deletion if found.
+ """
+ if self.id_ is None:
+ raise HandledException('cannot remove unsaved item')
for item in ('process', 'todo'):
for attr in ('conditions', 'enables', 'disables'):
table_name = f'{item}_{attr}'