Hello, I have records that have field that refered to other table id, but sometime no refering id needed. In these case my app break, I mean when the foreign key field is empty.
Here example : db.table1.registry_id.requires = IS_NULL_OR(IS_IN_DB(db,'ref_registry.registry_id',db.ref_registry._format)) and I got this error when registry_id is empty : lambda id: db.ref_registry(id).num AttributeError: 'NoneType' object has no attribute 'num' Richard
