registrations_controller.rb

  
    if @new_user.save

      if @invitation && @invitation.persisted?
        # Mark private invites as used.
        @invitation.deactivate unless @invitation.public?
        # Send referrer feedback/rewards when the new user signs up.
        @invitation.delay.reward_referrer_on_signup(@new_user)
      end

      session[:referrer_code] = nil

      # Attempt to post sign up to FB wall if we are permitted to
      Authentication.post_signup_to_fb(@new_user) if params[:share_friends] == 'yes'
      
      flash[:mixpanel_analytics] = 'Customer Signup'       
      flash[:km_analytics] = "['record', 'signed up']"
      
      # sign in and redirect
      session[:user_return_to] ||= params[:return] || welcome_users_cp_path
      sign_in_and_redirect @new_user and return
    else
      failure and return
    end
  end