Professional CodeIgniter

Chapter 3: A 10,000 - Foot View of CodeIgniter

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Controllers

For simplicity ’ s sake, you ’ re going to use the default controller, welcome.php, for the first part of this

project. As things progress, you can create additional controllers as needed.

When you look at your project notes, you know that the following main destinations are required by

your application:

A home page

A Category page, showing subcategories

A subcategory page, showing products

A Product Detail page

A Shopping Cart page

A Search Results page

Various other minor pages, such as Contact Us, About Us, and Privacy Policy

Each of these destinations becomes a function of your controller. If you want users to visit an about_us

page on your site, you need an about_us function in your controller. Right now you don ’ t care about the

details of what happens at those destinations; you just want to sketch them in, without regard to loading

models, views, helpers, or anything else.

Your primary goal right now is to get an overview of the project space, so you open the default welcome

.php controller in /system/application/controllers/ and get to work:

class Welcome extends Controller {

function Welcome(){

parent::Controller();

}

function index(){

//use this for your home page

}

function cat(){

//use this for the category page

}

function subcat(){

//use this for the subcategory view

}

function product(){

//use this for the product view

}

function cart(){

//use this for the shopping cart view

}

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