修改缓存调用的条件。将整个为空和result为空都加以判断

application/third_party/train/controllers/search.php

@@ -35,7 +35,7 @@ class search extends CI_Controller{
 			$return_data = new stdClass();
 			$cache = 'no';
 			
-			if(empty($back_data)){
+			if(empty($back_data) || empty(json_decode($back_data)->result)){
 				$obj = $this->BIZ_train_model->get_train_info($fromStation,$toStation);
 			if($obj){
 				$back_data = $obj->tpc_content;

application/third_party/train/models/BIZ_train_model.php

@@ -35,6 +35,7 @@ class BIZ_train_model extends CI_Model {
 						UPDATE TrainPriceCache
 						SET    tpc_from_station		   = '$tpc_from_station',
 							   tpc_to_station          = '$tpc_to_station',
+							   tpc_content			   = '$tpc_content',
 							   tpc_datetime            = GETDATE(),
 							   tpc_source			   = 'juhe'
 						WHERE