public function get_item_post()
 {
     $deliveries_repo = new Deliveries_Repository($this->base_model->get_db_instance());
     $delivered_item_id = $this->input->post('deliveredItemId');
     $delivered_item = $deliveries_repo->get_item($delivered_item_id);
     $data = array();
     $items_repo = new Items_Repository($this->base_model->get_db_instance());
     $item = $items_repo->get_item($delivered_item->item_id);
     array_push($data, array('id' => $delivered_item->id, 'delivery_id' => $delivered_item->delivery_id, 'description' => $item->description, 'item_id' => $delivered_item->item_id, 'quantity' => $delivered_item->quantity));
     echo json_encode($data);
 }