Changes

The following files makeup the Auth module to extend the functionality of Authlogic for our purposes. They could probably be moved into the UserSession module, but may be useful as a template for further localization.

'''Session''' establishes the following Auth module callback functionsand can serve as a template for further localizations.Callback functions to be overridden locally as appropriate:# '''before_login'''- called when a new user session is being established, before the actual login is called# '''after_loginlogin_url'''# '''before_logout''- called if before_login isn't defined or returns false, convenience method for redirecting to an external login url# '''after_logoutafter_login'''- called after login user has been validated, provides mechanism for authorization# '''on_every_requestbefore_logout''' Also establishes two public methods for setting external login and logout urls.- called before current user session is destroyed# '''login_urlafter_logout'''- called after current user session is destroyed# '''logout_urlon_every_request''' The after_login callback is a bit of a hack since it only runs when the controller action is "validate." - called on every request It also has private methods validate_url (for sending to external logins) and session_user (for setting the session_user attributes).