在CakePHP中将两个JSON响应组合在一起

在我的CakePHP应用程序中，我在beforeFilter中做了一些事情来传递额外的JSON数据，以及关于用户或身份验证等的响应。

例如：

public function beforeFilter()
{
    $this->Auth->allow(array('index'));
    // If the request is either JSON or XML
    if ( $this->params['ext'] == 'json' || $this->params['ext'] == 'xml' )
    {
        if( $this->Auth->user() )
        {
            // User is logged in so send userdata and usual response will also be passed
            $response = array('meta' => 
                array(
                    'auth' => true,
                    'user_id' => $this->Auth->user('id')
                )
            );
            echo json_encode($response);
        }
        else
        {
            $requiresAuth = !in_array($this->params['action'], $this->Auth->allowedActions);
            if ($requiresAuth)
            {
                $response = array('meta' => 
                    array(
                        'auth' => false
                    )
                );
                echo json_encode($response);
                exit; // exit so no other responses go through
            }
            else
            {
                // Send JSON usual response
                $response = array('meta' => 
                    array(
                        'auth' => false
                    )
                );
                echo json_encode($response);
            }
        }
    }
    parent::beforeFilter();
}

这是用来建立我的RESTful API为一个移动应用程序。这里的问题是，完整返回的JSON如下所示：

{
    "meta": {
        "auth": false,
    }
} {
    "posts": [{
        "Post": {
            "id": "136",
            "user_id": "8",
            "datetime": "2012-09-11 15:49:52",
            "modified": "2012-09-16 15:31:38",
            "title": "Where is good to eat in New York?",
            "slug": "Where_is_good_to_eat_in_New_York",
            "content": "Preferably italian or mexican and with a good atmosphere.'r'n'r'nAlso within the **Manhattan** area!",
            "status": "1",
            "promoted": "0",
            "latitude": "53.6570794",
            "longitude": "-1.8277604"
        },...

正如您所看到的，这两个JSON对象没有正确地组合在一起。。。我该如何解决这个问题？

使用CakePHP 2.3