Yii使用 case when 来模糊排序查询

$search_arr=['沙发','床','现代轻奢','新中式'];//越排在前面得关键词，优先模糊排序$where=[];$order_by="";$query = Goods::find()->alias('g')->where(['g.status' => 1,'g.is_delete' => 0,'g.type' => get_plugin_type(),'g.is_clear_sale'=>$is_clear_sale,])->leftJoin(['m' => Mch::tableName()], 'm.id=g.mch_id')->andWhere(['or',['g.mch_id' => 0],['m.is_delete' => 0]]);foreach ($search_arr as $k2=>$v2){$kk = $k2+1;if($k2==0){$where[$k2]="or";$where[$kk]=['like','g.name',$v2];$order_by='case when `g`.`name` like \'%'.$v2.'%\' then '.$kk;}else{$where[$kk]=['like','g.name',$v2];$order_by.=' when `g`.`name` like \'%'.$v2.'%\' then '.$kk;}}$order_by.=' end';$query->orderBy([$order_by => SORT_ASC]);$query->andwhere($where);$count = $query->count();$pagination = new Pagination(['totalCount' => $count, 'pageSize' => $this->limit, 'page' => $this->page - 1]);$list = $query->select('g.id,g.name,g.price,g.petao_introdu,g.original_price,g.cover_pic,gn.num,g.virtual_sales,g.unit,g.is_negotiable')->limit($pagination->limit)->offset($pagination->offset)->asArray()->groupBy('g.id')->all();