CakePHP Automatic Database Environment Detection

database.php

<?
class DATABASE_CONFIG {

    var $default = false;

    var $prod = array(
        'driver' => 'mysql',
        'persistent' => true,
        'host' => 'localhost',
        'login' => 'prod_user',
        'password' => 'prod_pass',
        'database' => 'prod_db',
        'prefix' => '',
    );

    var $dev = array(
        'driver' => 'mysql',
        'persistent' => true,
        'host' => 'localhost',
        'login' => 'dev_user',
        'password' => 'dev_pw',
        'database' => 'dev_db',
        'prefix' => '',
    );

    function __construct()
    {
        switch(gethostname())
        {
            case "dev":
                $this->default =& $this->dev;
            break;

            default:
            case "prod":
                $this->default =& $this->prod;
                Configure::write('debug', 0);
            break;
        }
    }
}