Module.php

/**
     * Handles errors during dispatch
     *
     * @param \Zend\Mvc\MvcEvent $e
     */
    public function onDispatchError(MvcEvent $e)
    {
        $exception = $e->getParam('exception');

        // Not an exception causing this.
        if (! $exception instanceof Exception) {

            return;
        }

        // Check that we have a valid response
        $response = $e->getResponse();

        // create a response object if we did not receive one
        if (! $response) {

            $response = new HttpResponse();
            $e->setResponse($response);
        }

        // Get the response code
        $code = ($exception->getCode() == null) ? 500 : $exception->getCode();

        // Uhoh we should log this shieet
        if ($exception instanceof LogicException) {

            /**
             * @var $logger \Zend\Log\Logger
             */
            $logger = $e->getApplication()->getServiceManager()->get('logger');

            $extras = array(
                'ip'   => $_SERVER['REMOTE_ADDR'],
                'file' => $exception->getFile(),
                'line' => $exception->getLine(),
            );

            $message = sprintf('Exception: %s with message: %s', get_class($exception), $exception->getMessage());

            // Log
            $logger->err($message, $extras);
        }

        // respond with the correct code
        $response->setStatusCode($code);

        // render the error
        $model = new ViewModel();

        // pass some variables
        $model->setVariable('exception', $exception);
        $model->setVariable('success', false);

        // set the template (used in html requests)
        $model->setTemplate('error/code/' . $code);

        /**
         * @var $view \Zend\View\View
         */
        $view = $e->getApplication()->getServiceManager()->get('viewManager')->getView();

        // Hook into the response
        $view->getEventManager()->attach(ViewEvent::EVENT_RESPONSE, array($this, 'onRender'), 101);

        // set the result
        $e->setResult($model);

        // doing this will stop all other exception handling strategies
        $e->setError(null);
    }

    /**
     * Lovely hack to keep our API consistent
     * 
     * @param \Zend\View\ViewEvent $e
     */
    public function onRender(ViewEvent $e)
    {
        if ($e->getRenderer() instanceof JsonRenderer) {

            $response = json_decode($e->getResult());
            $e->setResult(json_encode($response->content));
        }
    }