extended user lifecycle example

  lifecycle do

    state :unverified, :default => true
    state :verified,:active, :inactive, :banned

    create :signup, :available_to => "Guest",
           :params => [:name, :real_name, :birthday, :email_address, :password, :password_confirmation],
           :become => :unverified, :new_key => true do
      if self.birthday.to_time < 18.years.ago
        UserMailer.deliver_email_verification(self, lifecycle.key)
      else
        UserMailer.deliver_email(self,"Account Request","We're sorry, but you must be over 18 to signup for an account.")
      end
    end

    transition :verify_email_address, { :unverified => :verified }, :available_to => :key_holder do
      UserMailer.deliver_email(self,"Email address verified","Your email address has been verified.")
    end

    transition :accept_terms, { :verified => :active }, :available_to => :user_account do
      UserMailer.deliver_email(self,"Terms accepted","Now that you've accepted the terms of use, you can start submitting content.")
    end

    transition :deactivate, { [:verified,:active] => :inactive }, :available_to => :user_account do
      UserMailer.deliver_email(self,"Account deactivated","At your request, your account has been deactivated.")
    end

    transition :activate, { :inactive => :verified }, :available_to => :user_account do
      UserMailer.deliver_email(self,"Account reactivated","At your request, your account has been reactivated.")
    end

    transition :ban, { [:verified, :unverified, :active, :inactive] => :banned }, 
        :available_to => User.administrators do
      UserMailer.deliver_email(self,"Account Banned","Due to violations, your account has been banned.")
    end

    transition :request_password_reset, { :active => :active }, :new_key => true do
      UserMailer.deliver_forgot_password(self, lifecycle.key)
    end

    transition :reset_password, { :active => :active }, :available_to => :key_holder,
                :params => [ :password, :password_confirmation ]

    transition :change_email, { [:active, :inactive, :verified] => :unverified }, 
                :available_to => :user_account,
                :params => [ :email_address ], :new_key => true do
      UserMailer.deliver_email_verification(self, lifecycle.key)
    end
  end