Hello, Since some days, I try to create a dynamic user profiling system. In this system, users can use many fields defined in a list. In these fields, there are ones which admit a scalar value (like firstname or birthday) and others which admit a collection (like skills or visited countries) of value. I have some troubles with that… How can i manage these polymorphic fields ? Can you help me the define my models and their relations ? Thanks for reading, Sephi-Chan