Modules
A module is similar to an entire mini-application contained within a larger application. It has a similar structure, containing models, views, controllers, and other supporting components. However, modules cannot be deployed themselves as stand-alone applications, they must reside within an application.
Modules are useful in helping architect your application in a modular fashion. Large applications can often be segmented into discrete application features that could be separately built using modules. Site features such as adding a user forum, user blogs, or site-administrator functionality are some example candidates that could be segmented from the main site features allowing them to be developed separately and easily reused in future projects. We are going to use a module to create a distinct place in our application to house our administrative functionality.
Creating a module
Creating a new module is a snap using our old friend, the Gii code generation tool. With our URL changes...
