Select Database depending on environment, CakePHP

database selection

<?php
/**
 * Automatically configure database connection.
 */
	public function __construct() {
		$environment = Configure::read('environment');
		$operatingSystem = (DS === '/') ? 'Linux' : 'Windows';
		if ($environment === 'development') {
			$this->default         = $this->development;
		} else {
			$this->default         = $this->production;
		}
	}
/**
 * Default database.
 */
	public $default = null;

/**
 * Development database.
 */
	public $development = array(
		'driver'   => 'Database/Mysql',
		'host'     => 'host',
		'login'    => 'login',
		'password' => 'pass',
		'database' => 'db',
	);