undefined local variable or method `confirmed_at' for #User

Question

I am using Rails 3. There is a possible duplicate here. But it did not solve my problem, neither did any other solution.

My migration is as follows

class         


        

Answer 1

To tie in @DevDude's answer with the accepted answer - if you already have an existing Users model to which you need to add confirmable, the full migration code for the version of Devise current as of 4/14 is:

class AddConfirmableToDeviseV1 < ActiveRecord::Migration
  def change
    change_table(:users) do |t|
       # Confirmable
       t.string   :confirmation_token
       t.datetime :confirmed_at
       t.datetime :confirmation_sent_at
       t.string   :unconfirmed_email # Only if using reconfirmable
     end
     add_index  :users, :confirmation_token, :unique => true 
   end
end