I'm getting this: ConcurrentModificationError: updated rowcount 0 does not match number of objects updated 1 when I try to commit a simple deletion. I'm using Sqlite locally but the error also occurs on a Postgres database in a live environment with only ONE user connected.
I saw this post from Nov. 11th: http://groups.google.com/group/sqlalchemy/browse_thread/thread/e7175c7351963128but because I'm not doing any copying (just deletion), it didn't seem to provide anything useful. Both session.dirty and session.new are empty. I have a Task class mapped to an association table called TaskTag that has a task_id and tag_id. I'm literally doing a session.delete(task) followed by a session.commit() and session.close(). Here's my mapper: mapper(Task, tasks_table, properties = { 'tags' : relation(Tag, secondary=tasktags_table, lazy = False) }) I suspect this has something to do with the many-to-many relationship, but for the life of me I cannot figure out what's going on. Thanks in advance. -Dave P.S. I use SqlAlchemy so often, I love the framework. Thanks to everyone for your hard work, it's greatly appreciated :-) -- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To post to this group, send email to sqlalch...@googlegroups.com. To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en.
