mrjoes/flask-admin — pull request #327 by lu-zero (2013-10-08 04:47:41+00:00)
Title: sqla: consider MANYTOMANY in InlineModelConverter

Apparently this is enough to make it working. Probably once I manage to use Association Object pattern with Flask-SQLAlchemy I might revisit it to inline edit/create the related item and the relationship-specific data at the same time.