module Devise::Models::Confirmable

def confirm(args = {})
  pending_any_confirmation do
    if confirmation_period_expired?
      self.errors.add(:email, :confirmation_period_expired,
        period: Devise::TimeInflector.time_ago_in_words(self.class.confirm_within.ago))
      return false
    end
    self.confirmed_at = Time.now.utc
    saved = if pending_reconfirmation?
      skip_reconfirmation!
      self.email = unconfirmed_email
      self.unconfirmed_email = nil
      # We need to validate in such cases to enforce e-mail uniqueness
      save(validate: true)
    else
      save(validate: args[:ensure_valid] == true)
    end
    after_confirmation if saved
    saved
  end
end