我想用Eloquent创建产品过滤器 .
我是这样开始的
$query = Product::whereHas('variants')
->with('variants')
->with('reviews')
$query = $this->addOrderConstraints($request, $query);
$products = $query->paginate(20);
哪里
private function addOrderConstraints($request, $query)
{
$order = $request->input('sort');
if ($order === 'new') {
$query->orderBy('products.created_at', 'DESC');
}
if ($order === 'price') {
$query->orderBy('variants.price', 'ASC');
}
return $query;
}
但是,这不起作用,因为Eloquent正在执行此查询(来自Laravel DebugBar的信息)
select count(*) as aggregate from `products` where exists
(select * from `variants` where `products`.`id` = `variants`.`product_id`)
select * from `products` where exists
(select * from `variants` where `products`.`id` = `variants`.`product_id`)
select * from `variants` where `variants`.`product_id` in ('29', '30', '31', '32', '33', '34', '35', '36', '37', '38', '39', '40', '41', '42', '43', '44', '45', '46', '47', '48')
等等
因此,当我尝试按价格使用排序时,它只是明显的错误
Unknown column 'variants.price' in 'order clause' (SQL: select * from
`products` where exists (select * from `variants` where `products`.`id` =
variants
. product_id
)由 variants
订购 . price
asc limit 20 offset 0)
那么是否可以与Eloquent进行关系排序?
2 回答
这将对子查询进行排序 . 不是“第一个查询(产品查询)” .
基本上,你的子查询将是:
select * from variants where product_id in (....) order by price
,这不是你想要的,对吧?如果要对产品/或变体进行排序,则需要使用连接 .
你可以在whereHas进行排序
并从
addOrderConstraints
方法中删除变体排序