Thanks a lot. I have a property in Product entity as'type'. Each product may have one of three types or no type at all. for each type of three types, I have 3 different tables, and relationship of product to any of these three is OneToOne, or may be it would have no type at all. so as the value of 'type' property of Product it may be 'type1', 'type2', 'type3', 'no_type' then in my Product entity I have three OneToOne to each of typ1, type2, type3. Now I have problem when I am going to update a product row using persist, I am getting error: NOTICE: Undefined index: in /vendor/doctrine/orm/lib/Doctrine/ORM/UnitOfWork.php on line 2693 Fatal error: Call to a member function setValue() on a non-object in /vendor/doctrine/orm/lib/Doctrine/ORM/UnitOfWork.php on line 2693 If I remove 3 OneToOne mappings the error disapears, so what should I do? or what if it has no_type and doesn't need to be matched to any of these three entities? what do you advice? I was thinking of creating another table/entity like: | type | product_id | --------------------- type1 | type2 | type3 | no_type| then product would be OneToOne to this table, and with product_id in this table can be matched to appropriate table e.g. type1, type2, via this table. This way, if it has no type at all, the property will not be null, and error may be solved? is it the right way? or the error I am getting above, has nothing to do with this? (for testing I noticed if I remove these three OnetoOne from Product, error removes.) Please advice. I appreciate it.
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