Neos Flow ActionController 返回JSON

protected $supportedMediaTypes = ['application/json', 'text/html' ];

return json_encode($dashboard);

JSON View

/**
* @var string
*/
protected $viewFormatToObjectNameMap = array(
'html' => 'TYPO3\Fluid\View\TemplateView',
'json' => 'TYPO3\Flow\Mvc\View\JsonView'
);
...
$this->view->assign('value', $dashboard);