Display link in Rails form error message

Question

On our sign-up form, we validates_uniqueness_of :email

When the a user is attempting to use our sign up form and they specify an existing email address, I\'

Answer 1

After hours trying to figure this out for Rails 4 with devise, I realised you can just add the link directly into the validation:

# app/models/user.rb
validates :username, presence: true, uniqueness: {:message => "username has already been taken - search users" }

where the link in this case is my users index. Hopefully this will help someone!