modRest

Built-in curl client for sending requests to third-party services (RESTful and others)

Since third-party services are increasingly being used in the daily development of sites, for these purposes MODX has a built-in client with which you can send requests:

/* @var modRest $client */
$client = $modx->getService('rest', 'rest.modRest');
$response = $client->get('GET request');
# or
$response = $client->post('POST request');

// Processing the received data in json or xml format and converting them into an array
$array = $response->process();

The following are ways to work with the client.

Sending a request with parameters¶

We write down the parameters that we want to send to our service

$url = 'http://site.ru/rest/products';
$params = array('limit' => 100);
/* @var modRest $client */
$client = $modx->getService('rest', 'rest.modRest');
// $client->setOption('format','json'); // The format of the received data accepts json or xml (json by default) for conversion to an array
$response = $client->get($url, $params);
$data = $response->process(); // Will return an array

Checking Method Availability¶

To check the existence of a method or want to know the existence of a page, we can check the status code of the page in a variable responseInfo:

$url = 'http://site.ru/rest/mymethod';
/* @var modRest $client */
$client = $modx->getService('rest', 'rest.modRest');
$client->setOption('header', true); // Return title
$response = $client->get($url);
if (property_exists($response->responseInfo, 'scalar')) {
    $code = $response->responseInfo->scalar;
}
echo $code; // 200 - method is available, 404 - method or page does not exist

Checking Service Availability¶

Sometimes services fall or respond too long, for this there is a variable responseError where errors are written.

$url = 'http://site.ru/rest/mymethod';
/* @var modRest $client */
$client = $modx->getService('rest', 'rest.modRest');
$client->setOption('timeout', 15); // Set the timeout
$response = $client->get($url);
if ($response->responseError) {
    echo $response->responseError; // print error message
}

Login¶

For authorization in the service by means CURLOPT_HTTPHEADER, must specify in options username and password

$url = 'http://site.ru/rest/mymethod';
/* @var modRest $client */
$client = $modx->getService('rest', 'rest.modRest');

$client->setOption('username', 'login');
$client->setOption('password', 'password');

$response = $client->get($url);
if (property_exists($response->responseInfo, 'scalar')) {
    $code = $response->responseInfo->scalar;
}
echo $code; // 200 - authorized, 403 - authorization failed

Read header¶

For the service to return the headers, you must specify before sending the request $client->setOption('header', true); then in the variable $response->responseHeaders we will see response headers from the service

$url = 'http://site.ru/rest/mymethod';
/* @var modRest $client */
$client = $modx->getService('rest', 'rest.modRest');
$client->setOption('header', true);
$response = $client->get($url);
echo '<pre>' . print_r($response->responseHeaders, true) . '</pre>;

Record in header¶

To send the service our parameters in the headers:

$url = 'http://site.ru/rest/mymethod';

$headers=  array(
    'Content-type' => 'application/json', // We inform the service that we want to receive a response in json format
    'Authorization' => 'OAuth OUR TOKEN' // Authorization through headers
);

// we pass our headers immediately to the class
/* @var modRest $client */
$client = $this->modx->getService('rest', 'rest.modRest', array('headers' => $headers));

# or write headers in the request
`$response = $client->get($url, array(), $headers);`

For components¶

If an error occurs in the console in the form

modRestClient::__construct is deprecated since version 2.3.0. Use the modRest classes instead.

the following class has to be used in the code

$client = $this->modx->getService('rest', 'rest.modRest');

because modRestClient is a deprecated class.

For more information about all the features of the class, see the file: core/model/modx/rest/modrest.class.php