在这里，我坚持使用shopify通过API创建webhook

我正在使用蛋糕PHP创建公共购物应用程序

现在，我想使用API为我的应用程序创建carts/update hook这里是我的代码蛋糕php库：https://github.com/cmcdonaldca/CakePHP-Shopify-Plugin

文件：ShopifyApiComponent。php

代码：

public function createwebhook($shop_domain, $access_token){

    $method = "POST";
    $path = "/admin/webhooks.json";

    $params = array("webhook" => array( "topic"=>"carts/create",
                    "address"=>  $this->site_url."users/upUpdateCart",
                    "format"=> "json"));


    $password = md5($this->secret.$access_token);//If your shopify app is public
    $baseurl = "https://".$this->api_key.":".$password."@".$shop_domain."/";

    $url = $baseurl.ltrim($path, '/');
    $query = in_array($method, array('GET','DELETE')) ? $params : array();
    $payload = in_array($method, array('POST','PUT')) ? stripslashes(json_encode($params)) : array();
    $request_headers = in_array($method, array('POST','PUT')) ? array("Content-Type: application/json; charset=utf-8", 'Expect:') : array();
    $request_headers[] = 'X-Shopify-Access-Token: ' . $access_token;
                list($response_body, $response_headers) = $this->Curl->HttpRequest($method, $url, $query, $payload, $request_headers);


    $this->last_response_headers = $response_headers;
    $response = json_decode($response_body, true);

    if (isset($response['errors']) or ($this->last_response_headers['http_status_code'] >= 400))
        $body = $response['errors'];
    else
        $body = $response_body;
    /*Debug the output in a text_file*/
    $destination = realpath('../../app/webroot/execution_log') . '/';
    $fh = fopen($destination."shopify_app.txt",'a') or die("can't open file");
    date_default_timezone_set('GMT');

    fwrite($fh, "\n\nDATE: ".date("Y-m-d H:i:s")."\n".$body);
    fclose($fh);
    /*Debug Code Ends*/
    return (is_array($response) and (count($response) > 0)) ? array_shift($response) : $response;
}

当我访问我的应用程序dashboard时，我调用了这个函数mean Controller:Offers函数：dashboard

但它似乎不起作用，因为当我访问https://test.myshopify.com/admin/webhooks.json它没有显示任何东西，但如果我是通过管理员创建webhook-

请告诉我如何使用API（cake php）创建webhook