商品清洗--修复快速编辑失败tag保存问题

app/Admin/Controllers/v3/GoodsNewController.php

@@ -237,16 +237,18 @@ class GoodsNewController extends AdminController
                 // $form->market_id = $info->market_id;
 
                 $tags = $form->input('tags');
-                $tagsArr = [];
-                foreach($tags as $kt => $tag){
-                    if(empty($tag)){
-                        unset($tags[$kt]);
-                        continue;
+                if(!empty($tags)){
+                    $tagsArr = [];
+                    foreach($tags as $kt => $tag){
+                        if(empty($tag)){
+                            unset($tags[$kt]);
+                            continue;
+                        }
+                        $tagsArr[] = $tag;
                     }
-                    $tagsArr[] = $tag;
+                    
+                    $form->tags = json_encode($tagsArr);
                 }
-                
-                $form->tags = json_encode($tagsArr);
             });
         });
     }