Laravel Paginate 使用 DB::raw 查询答案

【问题标题】：Laravel Paginate usage with DB::raw queryLaravel Paginate 使用 DB::raw 查询
【发布时间】：2017-03-02 05:43:13
【问题描述】：

我如何在这个查询中使用 paginate()？

$result = DB::select(DB::raw(" select a.user_id, a.user_email, 
a.user_account_status, a.created_at, b.s_account_limit AS account_limit,
 c.consumed_limit, ((b.s_account_limit*1024) - c.consumed_limit) AS 
remaining_limit FROM upload_limits as b, users AS a JOIN user_upload_limits as 
c WHERE (a.user_id=c.user_id) AND a.user_type='Simple'"));

【问题讨论】：

How to use raw sql Pagination in Laravel5?的可能重复
简短回答：您无法在 Laravel 中对原始查询进行分页，但有一些解决方法。
$pagination = Paginator::make($book, count($book), 5);
分页器无法正常工作。请提出一些建议

标签： php mysql laravel pagination

【解决方案1】：

您可以使用->paginate() 方法，或者如果您想手动创建分页，您可以执行以下操作：

$perPage = $request->input("per_page", 10);
$page = $request->input("page", 1);
$skip = $page * $perPage;
if($take < 1) { $take = 1; }
if($skip < 0) { $skip = 0; }

$basicQuery = DB::select(DB::raw(" select a.user_id, a.user_email, a.user_account_status, a.created_at, b.s_account_limit AS account_limit, c.consumed_limit, ((b.s_account_limit*1024) - c.consumed_limit) AS remaining_limit FROM upload_limits as b, users AS a JOIN user_upload_limits as c WHERE (a.user_id=c.user_id) AND a.user_type='Simple'"));
$totalCount = $basicQuery->count();
$results = $basicQuery
    ->take($perPage)
    ->skip($skip)
    ->get();

$paginator = new \Illuminate\Pagination\LengthAwarePaginator($results, $totalCount, $take, $page);

return $paginator;

【讨论】：

谢谢；非常感谢。
未定义变量：take

【解决方案2】：

您还可以添加自定义排序方法，将 DB::raw 的数组结果与参数一起传递：

    public function sort($array_of_objects, $sort_by=null, $order, $page) 
{
    $collection = collect($array_of_objects);
    if ($sort_by)
    {

        if ($order=='desc') {
            $sorted = $collection->sortBy(function($role) use ($sort_by)
            {
                return $role->{$sort_by};
            })->reverse();
        } else if ($order=='asc') {
            $sorted = $collection->sortBy(function($role) use ($sort_by)
            {
                return $role->{$sort_by};
            });
        }
    } else {
        $sorted = $collection;
    }

    $num_per_page = 20;
    if (!$page) {
        $page = 1;
    }

    $offset = ( $page - 1) * $num_per_page;
    $sorted = $sorted->splice($offset, $num_per_page);

    return  new Paginator($sorted, count($array_of_objects), $num_per_page, $page);

}

【讨论】：