需要根据商品分类、商品名称和条形码这三个查询条件去取出结果集，这三者的关系是：商品分类 and (商品名称 or 条形码)。
laravel框架下 where 条件查询很简单，orWhere 多条件 or 查询语句的拼接，就相比麻烦些，下面给大家带来源码案例，示例如下：
（1）SQL 语句：
select `id` from `user` where (`email` = 'admin@feishuai.vip' and `password` = '123456') or (`mobile` = '13681127231' and `password` = '123456');laravel model 语句：
User::select(['id'])
->where(function ($query) use ($userName, $password) {
$query->where('password', '=', '123456')->where('email', '=', 'admin@feishuai.vip');
})
->orWhere(function ($query) use ($userName, $password) {
$query->where('password', '=', '123456')->where('mobile', '=', '13681127231');
})
->first();（2）SQL 语句：
select count(*) from `user` where `type` = 1 and `valid_type` = 2 and (`valid_end` < 1560738570 or `valid_begin` > 1560738570);laravel model 语句：
$model = User::where('type', 1)->where('valid_type', '=', 2)->where(function ($query) {
$query->where('valid_end', '<', 1560738570)->orWhere(function ($query) {
$query->where('valid_begin', '>', 1560738570);
});
})->first();（3）SQL 语句：
select count(*) from `user` where `valid_type` = 2 or (`valid_type` = 3 and (`valid_end` < 1560738570 or `valid_begin` > 1560738570));laravel model 语句：
$model = User::where(function ($query) {
$query->where('valid_type', 2);
})->orWhere(function ($query) {
$query->where('valid_type', '=', 3)->where(function ($query) {
$query->where('valid_end', '<', 1560738570)->orWhere(function ($query) {
$query->where('valid_begin', '>', 1560738570);
});
});
})->first();（4）原生写法
$goodsModel = $goodsModel->whereRaw('(name like ? or barcode like ?)', [$keyword, $keyword]);