Authorization key

[ernest]

If in the code of get_auth_key.php file (provided in the example folder for your API) I enter my change.org data (api, secret token, etc.), I could get an authorization key. This presumption worked fine with the file get_petition_id.php. But not here: I received nothing. So, I wonder what I'm doing wrong, and if there are any "easy" way to getting an auth key directly from the change.org account (similarly as we get the API and secret token keys).

[Daniel Setréus]

Run the code bellow - works for me. Make sure to look at the callbacl_endpoint parameter a couple of rows down.. 

$api_key = "apikey"; // Edit this

$secret_token = "secret"; // Edit this

$email = "email address for the api key and secret above"; // Edit this

$petition_id = 'petitionID'; // Edit this

$request_url = 'https://api.change.org/v1/petitions/' . $petition_id . '/auth_keys';

$petUrl = "http://example.com/myPetition..."; // The URL to your petition on YOUR webiste // Edit this

$params = array();

$params['api_key'] = $api_key;

$params['source_description'] = "Fight Racism Now Website"; // Something human readable.

$params['source'] = $petUrl; // Eventually included in every signature submitted with the auth key obtained with this request.

$params['requester_email'] = $email; // The email associated with your API key and Change.org account.

$params['timestamp'] = date("c"); // ISO-8601-formtted timestamp at UTC

$params['endpoint'] = '/v1/petitions/' . $petition_id . '/auth_keys';

$params['callback_endpoint'] = "http://example.com"; // Docs say that the auth key will be sent to this callback. That's not the case, however. All I get in the callback is an empty POST

// Build request signature and add it as a parameter

$query_string_with_secret_and_auth_key = http_build_query($params) . $secret_token;

$params['rsig'] = hash('sha256', $query_string_with_secret_and_auth_key);

// Final request body

$query = http_build_query($params);

// Make the request

$options = array(

   'http' => array(

       'method'  => 'POST',

       'content' => http_build_query($params),

   ),

);

$context  = stream_context_create($options);

if ($result = @file_get_contents($request_url, false, $context)) {

$res = json_decode($result, true);

print_r($res);

// Response is now in the array $res

}

else {

// Request to change failed...

return false; 

}