update

app/Models/UserMessage.php

@@ -10,6 +10,8 @@ namespace App\Models;
 
 class UserMessage extends BaseModel
 {
+    protected $appends = ['product_type'];
+
     public static function saveMessage($user_id, $type, $relation_id = 0, $param = [], $content = '')
     {
         if (empty($content)) {
@@ -25,4 +27,13 @@ class UserMessage extends BaseModel
 
         return true;
     }
+
+    public function getProductTypeAttribute()
+    {
+        if (in_array($this->type, [1,2,4,5,6,7,8]) && !empty($this->relation_id)) {
+            return Order::where('id', $this->relation_id)->value('product_type');
+        }
+
+        return 0;
+    }
 }