/**
  * This function is used for ajax call to get positions based on
  * business unit id and department id.
  * @parameters
  * @param {Integer} bunitid  =  id of business unit.
  *
  * @return Array of departments in json format.
  */
 public function getpositionsAction()
 {
     $bunit_id = $this->_getParam('bunitid', null);
     $dept_id = $this->_getParam('dept_id', null);
     $job_id = $this->_getParam('job_id', null);
     $position_model = new Default_Model_Positions();
     $options_data = "";
     $options_data .= sapp_Global::selectOptionBuilder('', 'Select Position');
     if ($job_id != '') {
         $dept_data = $position_model->getPositionOptions($bunit_id, $dept_id, $job_id);
         foreach ($dept_data as $dept) {
             $options_data .= sapp_Global::selectOptionBuilder($dept['id'], $dept['positionname']);
         }
     }
     $this->_helper->json(array('options' => $options_data));
 }