how to automatically add a role to a user when signing up using devise

I am using Devise 1.1.5. I got a roles and a roles_assignment table. Is it possible to assign a role automatically in my role_assignments table when the user signs up? Many thanks!

I tried this but it wont work

class User < ActiveRecord::Base  
  after_create :assign_role_after_sign_up

  protected  
    def assign_role_after_sign_up(user)  
      RoleAssignment.create(:role_id => 1, :user_id => user.id)  
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end

Your after_create method won't work because you're trying to pass user, which isn't much of anything in the model. All user attributes are actually accessible as instance variable, so you should instead do:

def assign_role_after_sign_up
  RoleAssignment.create(:role_id => 1, :user_id => id)
end

If you have a relationship between users and role_assignments (and if you don't, why not?), you can simply do this instead:

# If user :has_one :role_assignment
def assign_role_after_sign_up  
  create_role_assignment(:role_id => 1)
end

# If user :has_many :role_assignments
def assign_role_after_sign_up  
  role_assignments.create(:role_id => 1)
end

Create an after_create callback in the User model that creates and saves a role for the newly created user.

More information about callbacks is available in the Ruby on Rails guides.