Creating modules

If you have created a complex application part and want to use it with some degree of customization in your next project, most probably you need to create a module.

In this recipe we will see how to create a wiki module. For simplicity, we will not focus on the user and permissions management but will let everyone edit everything.

Getting ready

1. Create a fresh Yii application using yiic webapp.

2. Configure MySQL database and execute the following SQL:

   CREATE TABLE `wiki` (
     `id` varchar(255) NOT NULL,
     `text` text NOT NULL,
     PRIMARY KEY  (`id`)
   )

3. Generate the Wiki model using Gii.

4. Move protected/models/Wiki.php to protected/modules/wiki/models/.

5. Add wiki to the modules section of protected/config/main.php:

   'modules'=>array(
     // uncomment the following to enable the Gii tool
     'gii'=>array(
   
       'class'=>'system.gii.GiiModule',
       'password'=>false,
     ),
     'wiki'
   ),

How to do it...

Let's do some planning first:

• A wiki is a set of pages where one page can link to another...