Build an Registration form with referral link

I need build an small demo project with only this features: Custom User model (django) Users registration form needs: -> CPF (its an document from Brazil (000.000.000-00) -> email -> referral_link (user will create one on registration) -> miBank account (nullable) (format=000000-00) -> Full Name -> created_at_date -> Active (boolean) -> Cellphone (we will send some SMS if need) -> Father_ID (who gives the link to him) User will register accessing this link: [login to view URL]{REFERRAL_CODE} Another user will give and referral link to him, when he access, screen need show the form and an small message: "Seu upline é: {EMAIL_FROM_USER}" No special html page needs, can use default bootstrap or pure HTML. We will custom it in a hard way.