diff --git a/app/Models/Product.php b/app/Models/Product.php
index 37b64ae..827e5dc 100755
--- a/app/Models/Product.php
+++ b/app/Models/Product.php
@@ -9,6 +9,8 @@ class Product extends SoftDeletesModel
 {
     protected $table = "product";
 
+    protected $casts = ['factor_item_ids' => 'json'];
+
     protected static function booted()
     {
         static::addGlobalScope(new AdminProjectScope());