Question

I have an application using Devise for authentication with different accounts based on subdomain.

How can I separate Devise users and make e-mail only unique per subdomain scope?

Thanks in advance!

Answer 1

In Rails 2:

validates_uniqueness_of :email, :scope => :subdomain

In Rails 3:

validates :email, :uniqueness => true, :scope => :subdomain

In migration:

add_index :users, [:subdomain, :email], :unique => true