雄辩的 laravel WhereIn All

2021-12-26 00:00:00 sql php mysql laravel-5 eloquent

我想返回所有类别的所有项目.

I want to return all items with have all categories.

$items = DB::table('items')
              ->join('catitem_item', 'catitem_item.item_id', '=', 'items.id')
              ->whereIn('catitem_item.catitem_id', $cats)->paginate(10);

这个查询我现在拥有的返回类别为 1 或 2 或 3 的项目.我需要的是返回类别 1、2 和 3 的项目.

This query what I have now return items that have category 1 or 2 or 3. What I need is return items that have category 1 and 2 and 3.

我怎样才能做到这一点?

How can I achieve this?

推荐答案

试试这个:

$items = DB::table('items')
    ->join('catitem_item', 'catitem_item.item_id', '=', 'items.id')
    ->whereIn('catitem_item.catitem_id', $cats)
    ->groupBy('items.id')
    ->having(DB::raw('count(*)'), '=', count($cats))
    ->select('items.*')
    ->paginate(10);

使用 HAVING count(*) = 3 查询将只返回具有所有列出类别的项目.

With HAVING count(*) = 3 the query will only return items that have all listed categories.

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