I have this relationship which adds a `ContributionType.proposed_abstracts` backref that contains only abstracts not flagged as deleted.
contrib_type = relationship( 'ContributionType', lazy=True, foreign_keys=contrib_type_id, backref=backref('proposed_abstracts', primaryjoin='(Abstract.contrib_type_id == ContributionType.id) & ~Abstract.is_deleted', lazy=True) ) This works perfectly fine but unfortunately a `session.delete(some_contribution_type)` now does not NULL out the contrib_type_id of an abstract that has been flagged as deleted. Is there any way to use different join criteria for deletion cascades and for just accessing the relationship? Or do I need to hook into the before_delete event for this? -- SQLAlchemy - The Python SQL Toolkit and Object Relational Mapper http://www.sqlalchemy.org/ To post example code, please provide an MCVE: Minimal, Complete, and Verifiable Example. See http://stackoverflow.com/help/mcve for a full description. --- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sqlalchemy+unsubscr...@googlegroups.com. To post to this group, send email to sqlalchemy@googlegroups.com. Visit this group at https://groups.google.com/group/sqlalchemy. For more options, visit https://groups.google.com/d/optout.