public function executePurchaseHistory(sfWebRequest $request)
{
$part_no = rawurldecode($request->getParameter('part_no'));
$agent = new CCSearchAgent($part_no);
if ($data = $agent->fetchPurchaseHistory()) {
$json = json_encode($data);
} else {
$json = NULL;
}
//TODO: ajax helper for this block?
$response = $this->getResponse();
$response->setContentType('application/json');
$response->sendHttpHeaders();
return $this->renderText($json);
}
