public function importExcelToMysql($filePath, $fields = array(), $model = null, $startingRow = 2)
 {
     $objPHPExcel = PHPExcel_IOFactory::load($filePath);
     foreach ($objPHPExcel->getWorksheetIterator() as $worksheet) {
         //field validation
         $fieldValidate = array();
         $validated = FALSE;
         for ($col = 0; $col < count($fields); ++$col) {
             $val = $worksheet->getCellByColumnAndRow($fields[$col]['col'], 1)->getValue();
             $fieldValidate[$fields[$col]['name']] = $val;
         }
         if ($fieldValidate['code'] == 'Kode Satker' and $fieldValidate['name'] == 'Nama Satker') {
             $validated = TRUE;
         }
         //end of validation
         if ($validated == TRUE) {
             $isSuccess = FALSE;
             $highestRow = $worksheet->getHighestRow();
             // e.g. 10
             for ($row = $startingRow; $row <= $highestRow; ++$row) {
                 $attributes = array();
                 for ($col = 0; $col < count($fields); ++$col) {
                     $val = $worksheet->getCellByColumnAndRow($fields[$col]['col'], $row)->getValue();
                     $attributes[$fields[$col]['name']] = $val;
                 }
                 $code = trim($attributes['code'], " \t\n\r\v");
                 $recorded = Satker::model()->find(array('condition' => "code='{$code}'"));
                 if ($attributes['code'] != NULL && $attributes['name'] != NULL) {
                     if ($recorded) {
                         $recorded->attributes = $attributes;
                         $recorded->code = $code;
                         if ($recorded->update()) {
                             $isSuccess = TRUE;
                         }
                     } else {
                         $model = new Satker();
                         $model->attributes = $attributes;
                         $model->code = $code;
                         if ($model->save()) {
                             $isSuccess = TRUE;
                         }
                     }
                 }
             }
             if ($isSuccess) {
                 unlink($filePath);
                 Yii::app()->user->setFlash('success', "Data berhasil diimport.");
                 $this->redirect(array('index'));
             } else {
                 unlink($filePath);
                 Yii::app()->user->setFlash('error', "Mohon isikan data dengan lengkap.");
             }
         } else {
             unlink($filePath);
             Yii::app()->user->setFlash('error', "Pastikan file yang Anda upload sudah benar!");
             $this->redirect(array('importData'));
         }
     }
 }