解析多部分/表单数据CakePHP3

Question

我目前正在尝试解析我通过Chrome中的Postman插件发送的multipart/form-data。然而，我得到的输出如下：

'------WebKitFormBoundarymsXhoqlRBbTbsZFb
Content-Disposition: form-data; name="album_id"

2
------WebKitFormBoundarymsXhoqlRBbTbsZFb
Content-Disposition: form-data; name="description"

haiahaahahahdaisdhisadhisadihsdhiiahsd
------WebKitFormBoundarymsXhoqlRBbTbsZFb
Content-Disposition: form-data; name="favorite"

true
------WebKitFormBoundarymsXhoqlRBbTbsZFb
Content-Disposition: form-data; name="uploadfile"; filename="test2.txt"
Content-Type: text/plain

Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim  veniam,
quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse
cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat  cupidatat non
proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam,
quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse
cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non
proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
 ------WebKitFormBoundarymsXhoqlRBbTbsZFb
 Content-Disposition: form-data; name="uploadfile"; filename="test.txt"
 Content-Type: text/plain

 Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
 tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam,
 quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
 consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse
 cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non
 proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
 ------WebKitFormBoundarymsXhoqlRBbTbsZFb--
 '

当我尝试调试$this->request->input()时，会得到这个输出。当我尝试$this->request->input('json_decode')时，我得到一个空数组，所以我假设数据的格式不正确（只是一个字符串）。在我写我自己的算法之前，我想确定我没有用这个算法重新发明轮子。我做错什么了？或者，如果没有，是否存在一些CakePHP3函数来处理这个问题？

更新
我发现了代码中的错误，路由过程似乎以某种方式将post数组清空到早期。当我尝试使用以下endpoint的Postman http：//vecto.app/api/picture$this->request->data为空。但是，当我尝试访问endpointhttp://vecto.app/pictures时，$this->request->data将填充这些信息。有人知道以下路由设置有什么问题吗：

Router::prefix('api', function ($routes) {
   $routes->extensions(['json', 'xml']);
   $routes->resources('Users');
   $routes->resources('Pictures');
   // We connect the /register action so we can simply extend the CRUD    Plugin add() method 
   // and benefit of already available logic like validation and response codes instead of having to reinvent the wheel.
   Router::connect('/api/users/register', ['controller' => 'Users',   'action' => 'add', 'prefix' => 'api']);
   $routes->fallbacks('InflectedRoute');
 });

Answer 1

我最终找到了解决方案，它是一个beforeFilter，清空了$this->request->数据数组。因此，输入数组不是空的，但数据数组是空的。这是导致问题的代码：

public function beforeFilter(Event $event) { 
    if ($this->request->is('post')) { 
        $data = $this->request;
        $this->request->data = $this->request->input(function ($data) { 
            return json_decode($data, true); 
        }); 
    } 
}