Jarves\Controller\Admin\BundleManager\ManagerController::activateAction PHP Method

    public function activateAction($bundle)
    {
        Manager::prepareName($bundle);
        $this->get('logger')->alert('ACTIVATE BUNDLE ' . $bundle);
        $appKernelPath = new \ReflectionClass('AppKernel');
        $file = $appKernelPath->getFileName();
        $content = file_get_contents($file);
        if (!class_exists($bundle)) {
            throw new \RuntimeException('Bundle does not exist.');
        }
        if (false !== stripos($content, 'new ' . $bundle) || false !== stripos($content, 'new \\' . $bundle)) {
            throw new \RuntimeException('Bundle already registered');
        }
        $newJarves = 'new Jarves\\JarvesBundle()';
        $searchJarves = '/^(\\s*)' . preg_quote($newJarves) . '/m';
        $result = preg_match($searchJarves, $content);
        if (!$result) {
            throw new \RuntimeException('Jarves bundle not found in AppKernel.');
        }
        $content = preg_replace($searchJarves, "\$1new " . $bundle . "(),\n\$1" . $newJarves, $content);
        return !!file_put_contents($file, $content);
    }