Hello, I try to make a financial app. Now I have this problem. I have customers which are put into a model. What I want is if I made a customer also a financial account is made with a specific number. So customer 1 has account number 16001. If the customer buys anything a invoice is made and must be put into the right 1600x number. How can I do this with models ? Roelof -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To unsubscribe from this group and stop receiving emails from it, send an email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To view this discussion on the web visit https://groups.google.com/d/msgid/rubyonrails-talk/79408f0b-7c2d-458d-8e2c-d68c929f9bbf%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.