App_Admin::page_sandbox PHP Method

    public function page_sandbox($p)
    {
        $p->title = 'Install Developer Tools';
        //$p->addCrumb('Install Developer Tools');
        $v = $p->add('View', null, null, array('view/developer-tools'));
        $v->add('Button')->set('Install Now')->addClass('atk-swatch-green')->onClick(function () {
            $install_dir = getcwd();
            if (file_exists($install_dir) . '/VERSION') {
                $install_dir = dirname($install_dir);
            }
            $path_d = $install_dir . '/agiletoolkit-sandbox-d.phar';
            $path = $install_dir . '/agiletoolkit-sandbox.phar';
            $url = 'http://www4.agiletoolkit.org/dist/agiletoolkit-sandbox.phar';
            if (file_put_contents($path_d, file_get_contents($url)) === false) {
                return 'update error';
            } else {
                if (rename($path_d, $path) === false) {
                    // get version of a phar
                    return 'update error';
                } else {
                    $version = file_get_contents('phar://' . $path . '/VERSION');
                    return 'updated to ' . $version;
                }
            }
        });
    }