@@ -0,0 +1,22 @@
+<?php
+
+namespace app\common\logic;
+
+use app\common\model\SysConfig;
+use app\common\model\SysCurrency;
+use app\common\traits\crud\CrudLogicTrait;
+
+class SysConfigLogic
+{
+    use CrudLogicTrait;
+
+    /**
+     * 指定当前要操作的模型
+     */
+    protected string $modelClass = SysCurrency::class;
+
+    public function findByKey(string $key)
+    {
+        return SysConfig::where('status', 1)->where('config_key', $key)->get(['id', 'config_key', 'config_value']);
+    }
+}