Public bug reported: The "from_self()" method in SQLAlchemy is deprecated in version 2.0.
The from_self() method takes an ORM query object, turns it into a subquery, then returns a new query object that will SELECT from that subquery, while transparently altering subsequent criteria added to the query to be stated in terms of the subquery. The current design direction of SQLAlchemy hopes to de-emphasize the "transparently altering criteria" part of the above use case, and to move users towards a more explicit and model of usage where a subquery should be created and used explicitly using the aliased() construct, which is now very mature and can be used in ways that were not available when from_self() was first introduced. Reference: https://github.com/sqlalchemy/sqlalchemy/issues/5368 ** Affects: neutron Importance: Undecided Assignee: Rodolfo Alonso (rodolfo-alonso-hernandez) Status: In Progress ** Changed in: neutron Assignee: (unassigned) => Rodolfo Alonso (rodolfo-alonso-hernandez) -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to neutron. https://bugs.launchpad.net/bugs/2004263 Title: [sqlalchemy-20] Remove ORM "from_self" Status in neutron: In Progress Bug description: The "from_self()" method in SQLAlchemy is deprecated in version 2.0. The from_self() method takes an ORM query object, turns it into a subquery, then returns a new query object that will SELECT from that subquery, while transparently altering subsequent criteria added to the query to be stated in terms of the subquery. The current design direction of SQLAlchemy hopes to de-emphasize the "transparently altering criteria" part of the above use case, and to move users towards a more explicit and model of usage where a subquery should be created and used explicitly using the aliased() construct, which is now very mature and can be used in ways that were not available when from_self() was first introduced. Reference: https://github.com/sqlalchemy/sqlalchemy/issues/5368 To manage notifications about this bug go to: https://bugs.launchpad.net/neutron/+bug/2004263/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : [email protected] Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp
