from sqlite3 import Row
from plomtask.db import DatabaseConnection, BaseModel
from plomtask.misc import VersionedAttribute
+from plomtask.exceptions import HandledException
class Condition(BaseModel[int]):
- """Non Process-dependency for ProcessSteps and Todos."""
+ """Non-Process dependency for ProcessSteps and Todos."""
table_name = 'conditions'
to_save = ['is_active']
self.title.save(db_conn)
self.description.save(db_conn)
+ def remove(self, db_conn: DatabaseConnection) -> None:
+ """Remove from DB, with dependencies."""
+ assert isinstance(self.id_, int)
+ for item in ('process', 'todo'):
+ for attr in ('conditions', 'enables', 'disables'):
+ table_name = f'{item}_{attr}'
+ for _ in db_conn.row_where(table_name, 'condition', self.id_):
+ raise HandledException('cannot remove Condition in use')
+ db_conn.delete_where('condition_titles', 'parent', self.id_)
+ db_conn.delete_where('condition_descriptions', 'parent', self.id_)
+ super().remove(db_conn)
+
class ConditionsRelations:
"""Methods for handling relations to Conditions, for Todo and Process."""