调整admin下的类库代码，将主要逻辑调整到extend下

app/admin/model/MallGoods.php

@@ -1,26 +1,9 @@
 <?php
 
-
 namespace app\admin\model;
 
+use base\admin\model\MallGoodsClass;
 
-use app\common\model\TimeModel;
-
-class MallGoods extends TimeModel
+class MallGoods extends MallGoodsClass
 {
-    protected $deleteTime = 'delete_time';
-
-    public function cate()
-    {
-        return $this->belongsTo('app\admin\model\MallCate', 'cate_id', 'id');
-    }
-
-    public function getTagListTitleAttr()
-    {
-        $tags = $this->getAttr('tag');
-
-        $list_tag = MallTag::whereIn('id', $tags)->column('title');
-
-        return $list_tag;
-    }
 }