A simple configuration loader which lets you have configs load up when the class is used instead of in the bootstrapper.
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The Lithium Config Loader allows you to load configuration files on the fly as classes are used. The benefit of this is that you do not have to run all of your configurations in the bootstrap and only apply them when it's relevant.


To use the Lithium Config Loader follow these steps

_1. Check out this project to your application's libraries directory.

_2. In app\config\bootstrap\libraries.php add the library and configure as appropriate (more below about configuring.) before the call to add the lithium library.

Libraries::add('li3_config_loader', array(
    'classes' => array(

_3. Modify your library loading for lithium so that it has the same key as the second parameter as shown below.

Libraries::add('lithium', array(
    'loader' => 'li3_config_loader\loader\Loader::load'

That's it. You'll want to configure the config loader appropriately so see more about that below.

Configuring the Config Loader

The config loader accepts two primary keys, filepath and classes. filepath is the default directory that the configuration files will exist, by default this is set to your application's config directory.

classes is an array of classes which have configuration files unique to them. By default when a class exists here their namespace & class name are used for the filename, it is represented as an underlined version, and assumed as residing in the filepath's directory. You can alternatively set a class to have a directory by setting it's namespace as the array key and defining (a relative to the filepath or absolute directory.)

Usage Example

Say we want to add a config file for the lithium\security\Auth, however we don't use the class for every page, so it'd be a waste to load this file on every page load.

_1. Add the class to the classes key in the library config.

Libraries::add('li3_config_loader', array(
    'classes' => array(

_2. Create the relevant file (in this example app\config\lithium_security_auth.php).

_3. Add your config to this file

    'user' => array(
        'adapter' => 'Form',
        'model' => 'Users',
        'fields' => array('username', 'password')
//whatever else you want to do with auth as well.

Because of this setup the Auth class is never loaded into memory until it's needed.