189 - Embedded Association”

ASCIIcasts - “Episode 189 - Embedded Association”:

In the previous episode we created a role-based authentication system. On the application’s sign-up page a series of checkboxes allowed a user to assign themselves to one or more roles. The application has a Role model in which the roles are defined and a many-to-many relationship between the Role and User via an Assignment model. If we look in the database we’ll see the three existing roles. >> Role.all +----+-----------+-------------------------+-------------------------+ | id | name | created_at | updated_at | +----+-----------+-------------------------+-------------------------+ | 1 | Admin | 2009-11-16 21:22:59 UTC | 2009-11-16 21:22:59 UTC | | 2 | Moderator | 2009-11-16 21:23:06 UTC | 2009-11-16 21:23:06 UTC | | 3 | Author | 2009-11-16 21:23:16 UTC | 2009-11-16 21:23:16 UTC | +----+-----------+-------------------------+-------------------------+ 3 rows in set The mai...

Full article: http://asciicasts.com/episodes/189-embedded-association