php - Twilio Ajax 响应始终触发 'Fail' ，尽管成功调用电话

Question

我正在尝试制作一个简单的 Twilio 应用程序，我大致遵循本教程:https://www.twilio.com/docs/voice/tutorials/click-to-call-php不过，我稍微调整和简化了它以满足我的需要，尽管问题元素似乎没有任何不同。

Ajax :

$('#twilio_click_form').on('submit', function(e) {
  // Prevent submit event from bubbling and automatically submitting the form
  e.preventDefault();
  // Call our ajax endpoint on the server to initialize the phone call
  $.ajax({
      url: '[...]/twilio_click_call',
      method: 'POST',
      dataType: 'json',
      data: {
          userPhone: $('#userPhone').val()
      }
  }).done(function(data) {
      // The JSON sent back from the server will contain a success message
      alert(data.message);
  }).fail(function(error) {
      alert('error');
      alert(JSON.stringify(error));
  });
});

PHP:

public function twilio_click_call()
{
    $twilio_creds = array(
         'TWILIO_ACCOUNT_SID' => 'xxxx',
         'TWILIO_AUTH_TOKEN' => 'xxxx',
         'TWILIO_NUMBER' => 'xxxx'
    );

    $userPhone = $this->input->post('userPhone');

    // Create authenticated REST client using account credentials
    $client = new Twilio\Rest\Client(
    $twilio_creds['TWILIO_ACCOUNT_SID'],
    $twilio_creds['TWILIO_AUTH_TOKEN']
);

    try
    {
        $client->calls->create($userPhone, $twilio_creds['TWILIO_NUMBER'],
             array("url" =>  'http://demo.twilio.com/docs/voice.xml')
        );
    }
    catch (Exception $e)
    {
         // Failed calls will throw
         return $e;
    }

    return array('message' => 'Call incoming!');
}

调用启动并完美运行，但是 Ajax 响应总是触发 .fail()，而不是 .done() 方法 - 无法确定原因。

Answer 1

您的代码中有两处错误。1.在ajax调用中，您已将datType定义为json，因此它也期望contentType为json，但您返回的是第一期的数组2. 您在 url 内调用 url

使用此代码:

public function twilio_click_call()
{
    $twilio_creds = array(
         'TWILIO_ACCOUNT_SID' => 'xxxx',
         'TWILIO_AUTH_TOKEN' => 'xxxx',
         'TWILIO_NUMBER' => 'xxxx'
    );

    $userPhone = $this->input->post('userPhone');

    // Create authenticated REST client using account credentials
    $client = new Twilio\Rest\Client(
    $twilio_creds['TWILIO_ACCOUNT_SID'],
    $twilio_creds['TWILIO_AUTH_TOKEN']
);

    try
    {
        $client->calls->create($userPhone, $twilio_creds['TWILIO_NUMBER'],
            array("url" =>  'http://demo.twilio.com/docs/voice.xml')
        );
    }
    catch (Exception $e)
    {
         // Failed calls will throw
         echo json_encode(array($e));
    }

    echo json_encode(array('message' => 'Call incoming!'));
}