修改获取方式

app/Http/Transformers/ExchangeSettingTransformer.php

@@ -10,7 +10,7 @@ class ExchangeSettingTransformer
     {
         if (isset($data['data']) && is_array($data['data'])) {
             foreach ($data['data'] as $key => &$value) {
-                $value['stock'] = $value['available_stock'];
+                $value['stock'] = array_get($value,'available_stock');
                 unset($value['available_stock']);
                 unset($value['add_time']);
                 unset($value['update_time']);