更新项目部分结构，新增加DB

common/core/BaseNewActiveRecord.php

@@ -0,0 +1,22 @@
+<?php
+namespace common\core;
+
+use yii\base\Exception;
+use yii\db\ActiveRecord;
+
+/**
+ * 对框架的AR的扩展，所有前台/后台数据模型都继承自该类
+ */
+class BaseNewActiveRecord extends ActiveRecord
+{
+    public static function getDb()
+    {
+        return \Yii::$app->get('new_db');
+    }
+    public function saveOrFail($runValidation = true, $attributeNames = null){
+        if(!$this->save($runValidation, $attributeNames)){
+            throw new Exception(implode(',',$this->getFirstErrors()));
+        }
+        return true;
+    }
+}