通过Codeigniter获取PUT请求

Question

我现在遇到CodeIgniter的问题:我使用REST控制器库(这真的很棒)来创建API但是我无法获得PUT请求...

这是我的代码:

function user_put() {
    $user_id = $this->get("id");
    echo $user_id;
    $username = $this->put("username");
    echo $username;
}

我使用curl来发出请求:

curl -i -X PUT -d "username=test" http://[...]/user/id/1

user_id已满,但username变量为空.然而它适用于动词POST和GET.你有什么想法吗？

谢谢 !

Answer 1

根据:http://net.tutsplus.com/tutorials/php/working-with-restful-services-in-codeigniter-2/我们应该咨询https://github.com/philsturgeon/codeigniter-restserver/blob/ master/application/libraries/REST_Controller.php#L544看到这个方法:

/**
 * Detect method
 *
 * Detect which method (POST, PUT, GET, DELETE) is being used
 * 
 * @return string 
 */
protected function _detect_method() {
  $method = strtolower($this->input->server('REQUEST_METHOD'));

  if ($this->config->item('enable_emulate_request')) {
    if ($this->input->post('_method')) {
      $method = strtolower($this->input->post('_method'));
    } else if ($this->input->server('HTTP_X_HTTP_METHOD_OVERRIDE')) {
      $method = strtolower($this->input->server('HTTP_X_HTTP_METHOD_OVERRIDE'));
    }      
  }

  if (in_array($method, array('get', 'delete', 'post', 'put'))) {
    return $method;
  }

  return 'get';
}

看看我们是否定义了HTTP标头HTTP_X_HTTP_METHOD_OVERRIDE,并使用它来支持我们在网络上实现的实际动词.要在请求中使用它,您可以指定标题X-HTTP-Method-Override: method(so X-HTTP-Method-Override: put)以生成自定义方法覆盖.有时框架期望X-HTTP-Method而不是X-HTTP-Method-Override这样,这取决于框架.

如果你是通过jQuery做这样的请求,你会把这个块集成到你的ajax请求中:

beforeSend: function (XMLHttpRequest) {
   //Specify the HTTP method DELETE to perform a delete operation.
   XMLHttpRequest.setRequestHeader("X-HTTP-Method-Override", "DELETE");
}

Answer 2

您可以尝试先检测方法类型并区分不同的情况。如果您的控制器只处理 REST 函数，那么在构造函数中放置 get 所需的信息可能会有所帮助。

switch($_SERVER['REQUEST_METHOD']){
   case 'GET':
      $var_array=$this->input->get();
      ...
      break;
   case 'POST':
      $var_array=$this->input->post();
      ...
      break;
   case 'PUT':
   case 'DELETE':
      parse_str(file_get_contents("php://input"),$var_array);
      ...
      break;
   default:
      echo "I don't know how to handle this request.";
}