public function ajaxGetProductsByPurposeAction()
{
$this->_helper->layout->disableLayout();
$sips = new Model_StakeholderItemPackSizes();
$params = $this->_request->getParam('params', '');
$purpose = $this->_request->getParam('purpose', '');
list($batch_id, $vvm, $placement_id, $activity_id) = explode("_", $params);
$stock_batch = $this->_em->getRepository("StockBatch")->find($batch_id);
$item_id = $stock_batch->getItemPackSize()->getItem()->getPkId();
$item_pack_size_id = $stock_batch->getItemPackSize()->getPkId();
$sips->form_values = array('item_id' => $item_id, 'purpose' => $purpose);
$items = $sips->getProductByItemPurpose();
$this->view->items = $items;
}
