Yii 实现数据库读写分离

实现一主一从，一主多从，多主多从的读写分离。支持DAO，AR,其中Query builder只完成部分，需完善

调用

//ARclass User extends ActiveRecord{public $useDbName= 'passport';//$this->dbWrite();}//$connection = $model->getDbConnection();//DAO$connection = Yii::app()->db->setDbName('passport');$count = $connection->createCommand('SELECT COUNT(*) FROM film')->queryScalar();$sql = 'SELECT film_id,title FROM film';$dataProvider=new CSqlDataProvider($sql,array('db'=> $connection,'totalItemCount'=>$count,));Yii::app()->db->getLastInsertID();//Query Builder$user = Yii::app()->db->setDbName('passport')->createCommand()    ->select('id, username, profile')    ->from('tbl_user u')    ->join('tbl_profile p', 'u.id=p.user_id')    ->where('id=:id', array(':id'=>$id))    ->queryRow();

?v2优化CDbConnectionExt能查看当前使用的主从库配置

Yii::app()->db->setDbName('passport');//print_r(Yii::app()->getComponent('passport'));

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