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Next, we need to change the User model in app/models/user.rb so that we can create a new reset code when needed: require 'digest/sha1' class User < ActiveRecord::Base # Virtual attribute for the unencrypted password attr_accessor :password, :password_forgotten # ... scroll 'til the end of the file def forgot_password self.password_forgotten = true create_pw_reset_code end def reset_password update_attributes(:password_reset_code => nil) end protected def create_pw_reset_code self.pw_reset_code = Digest::SHA1.hexdigest("secret-#{Time.now}") end # before filter def encrypt_password return if password.blank self.salt = Digest::SHA1.hexdigest("--#{Time.now.to_s}--#{login}--") if new_record self.crypted_password = encrypt(password) end def password_required crypted_password.blank || !password.blank end end In the beginning of the file, we declare an instance variable called @password_forgotten and accessor methods for it. Then we create a new method, forgot_password, which uses this variable to state whether a password reset has been requested. This method sets the @password_forgotten variable to true using its accessor method, and then calls the protected method create_pw_ reset_code to create a random, unique 40-character token for this resetting case. reset_password will be called when George has successfully completed the process. All it does is set the password_reset_code attribute to nil, awaiting the next time George s memory shows signs of deterioration.

Figure 3-10. The Compare Products window. Here customers can compare different products and product details.

~/python/ ~/python/drawing/ ~/python/drawing/__init__.py ~/python/drawing/colors.py ~/python/drawing/shapes.py

When we created UserNotifier in the beginning of the Reset Password user story implementation, the generator also created a file called user_observer.rb in app/models. Observers in Rails are classes that monitor the life cycle of ActiveRecord objects, somewhat similar to the filters for controllers. Observers support the following callback methods: after_create after_destroy after_save after_update after_validation after_validation_on_create after_validation_on_update before_create before_destroy before_save before_update before_validation before_validation_on_create before_validation_on_update You can call these callbacks directly in an ActiveRecord model, too: class MyModel < ActiveRecord::Base after_save :say_foo def say_foo logger.info "Foo-oo!" end end However, if your callback code gets longer and/or you want to implement similar behavior for multiple models, it s a good idea to extract the callbacks to an observer. Observers also give you more flexibility, since you can restrict the callbacks to happen only in certain controllers, as we will do in this section.

In addition to being a top-notch eCommerce platform, Magento has the ability to display pages called CMS pages or content management system pages. CMS pages refer to any non-product page. These pages can include additional information about your eCommerce store, such as company information, about us, payment terms, and customer service. CMS pages are given their own URL address and can be customized in both appearance and layout. These pages allow you to include images and content in addition to your products. Figure 3-11 is an example of how CMS pages look on the public interface.

Directory in PYTHONPATH Package directory (drawing package) Package code ( drawing module ) colors module shapes module

When the generate authenticated_mailer user command created the UserObserver observer, it created two callbacks for it: class UserObserver < ActiveRecord::Observer def after_create(user) UserNotifier.deliver_signup_notification(user) end def after_save(user) UserNotifier.deliver_activation(user) if user.recently_activated end end However, we don t need either of these callbacks, since we aren t implementing signup notification or user activation in this sprint. We can simplify the observer to look like this: class UserObserver < ActiveRecord::Observer def after_save(user) UserNotifier.deliver_forgot_password(user) if user.password_forgotten end end You might have wondered what we re going to do with the @password_forgotten variable in the User class, and here s the answer. Our after_save method in UserObserver kicks in when the User object is saved and checks whether the variable is true. If yes, it asks the UserNotifier mailer to deliver the forgot_password mail, passing the current user as an attribute. In normal cases, when @password_forgotten is nil, the observer does nothing.

Figure 3-11. This is a CMS page. It allows you to provide customers with important information about your store. Magento also provides another form of content management called static blocks. Static blocks are a great way of implementing editable content into your eCcommerce web site. The footer shown in Figure 3-12 is a perfect example of how to use static blocks. The footer, like other static blocks, is fully editable inside of Magento s administrative section. Static blocks can be used for news, upcoming events, and web site updates. If you understand the basics of HTML and PHP, you can place static blocks anywhere within your web site.

The last things to do for our password reset functionality are to tie it all together in AccountController and to create views for it. First, to make our new observer work, we need to call it in the controller with the observer macro. Add the following code to the AccountController class in app/controllers/account_controller.rb: class AccountController < ActionController::Base observer :user_observer ...