public function getApprovalLink(Transaction $transaction)
{
$details = $transaction->getPaymentDetails();
$answer = json_decode($details, TRUE);
if (isset($answer['links'])) {
foreach ($answer['links'] as $links) {
if (isset($links['href']) && isset($links['rel']) && $links['rel'] == 'approval_url') {
return $links['href'];
}
}
}
return false;
}
