sth

application/admin/controller/orders/Dispatch.php

@@ -142,6 +142,14 @@ class Dispatch extends Backend
             if (!$order) {
                 $this->error(__('No results were found'));
             }
+
+            //判断 是否存在有效派单任务
+            $existDispatch = OrderDispatch::where('order_id', $params['order_id'])->where('status', '>',0)->find();
+
+            if(!empty($existDispatch)){
+                $this->error('该订单已经派单，不可重复操作');
+            }
+
             $insert = [
                 'admin_id' => $this->auth->id,
                 'admin_user' => $this->auth->nickname,