/**
* Purchase article by user
*
* @param int $article_id - Purcased article ID
* @return bool
*/
public function purchaseArticle($article_id = 0)
{
$res = false;
$billing = new BillingClass();
$transaction = $billing->userPurchaseArticle($this, $article_id);
if ($transaction instanceof Transaction) {
// Add Article to My purchases list
$pl = new ContentPurchase();
$res = $pl->userPurchaseArticle($this->getId(), $article_id, $transaction);
}
return $res;
}
