Livereload helper for SilverStripe

LivereloadProvider.php

<?php

/**
 * Put {$Livereload} just before the end of the closing body tag
 */

class LivereloadProvider implements TemplateGlobalProvider {

	public static function get_template_global_variables() {
		return array(
			'OnLocalMachine' => 'on_local_machine',
			'ServerAddress' => 'server_address',
			'Livereload' => 'livereload'
		);
	}

	public static function on_local_machine() {
		return defined('GLOBAL_ENVIRONMENT_TYPE') || Director::isDev();
	}

	public static function server_address() {
		return $_SERVER['SERVER_ADDR'];
	}

	public static function livereload() {
		$out = HTMLtext::create();

		$out->value = self::on_local_machine() ? sprintf('<script src="http://%s:35729/livereload.js"></script>',
			self::server_address()
		) : '';

		return $out;
	}

}