def single_row(status):
''' `single_row` flag setting switch handler.
Parameters
----------
status: bool
setting switched to status.
'''
office = Office.get(id=0)
task = Task.get(id=0)
if status: # NOTE: Enabled
office = office or Office.create_generic(id=0)
task = task or Task.create_generic(id=0)
task.offices.append(office)
db.session.commit()
else:
office and office.delete_all()
