Registration by invite code?

Question

Django

Good afternoon toaster!! There was a goal to create invitations to the site. I made an invitation model with the following fields: email, user(who invites), code(invite code), is_accept(whether the invite is accepted). The invitation code is added at the end of the sent link in the invitation.
Question: how to set up the link in url.py so that it can work and if the code is and is not?
Example:
When you go to /register/, a registration form appears.
When you go to /register/some_invite_code/, a registration form appears and is_accept = True is entered into the database.

Answer 1

I solved the problem like this:
I made two pages:

• Page for invitees
  

  url(r'^register/(?P<invite_code>[A-Za-z]+)/$', views.InviteRegisterFormView.as_view(),
        name='invite_register'),

  
  
• Page for uninvited
  

  url(r'^register/$', views.RegisterFormView.as_view(),
        name='register'),

  
  In cbv InviteRegisterFormView inherited from RegisterFormView. And used a variable

  invite_code = self.kwargs['invite_code']
  invite = get_object_or_404(UserInvite, code=invite_code)
  invite.is_accept = True
  invite.save()

  
  Now an invitation from different users can come to the mail, the server will determine by whose link you registered.

Answer 2

Во вью проверять если не использован инвайт код.
Если не использован в модель юзера в поле рефер добавлять айди кому пренадлежит ссилка тоетсь айди рефера.