Scoping email to subdomain in devise rails

Question

I am using devise for authentication in rails app, and my app can have many subdomains. Currently it is using email as authentication, and email should be unique for the whole app.

Now is there any way I can scope uniqueness of email address to subdomain, not the whole app? I tried:

validates_uniqueness_of :email, :scope => :account_id

But didn't work. It still seeks uniqueness of email to whole app, not the specific subdomain when registering a new user.

Any help would be highly appreciated.

Answer 1

Ok I did this way.
Edited config.authentication_keys in devise.rb as

config.authentication_keys = [ :login, :account_id ]

Also I created hidden field to include account_id in login form

<%= f.hidden_field :account_id, :value => @account.id %>

Here @account hold the account related to current subdomain.

And added the following protected method in user.rb to override find_for_database_authentication class method

protected
def self.find_for_database_authentication(warden_conditions)
conditions = warden_conditions.dup
login = conditions.delete(:login)
account_id = conditions.delete(:account_id)
where(conditions).where(["lower(username) = :value OR lower(email) = :value", { :value => login.downcase }]).where("account_id = ?", account_id).first
end 

If there is better solution then feel free to comment guys..
Cheers!