public function activityLogAction()
 {
     $form = new Form_StockIssueSearch();
     $this->view->form = $form;
     $stock_master = new Model_StockMaster();
     if (!empty($this->_request->warehouse)) {
         $warehouse_id = $this->_request->warehouse;
     }
     if ($this->_request->isPost()) {
         if ($form->isValid($this->_request->getPost())) {
             $data = $form->getValues();
             $stock_master->form_values = $data;
         }
     }
     $dataset = $stock_master->activityLogSearch();
     $this->view->result = $dataset;
 }