如何限制 laravel 分頁中的頁面數量？

Question

我有一個分頁並嘗試限制該分頁的頁數。 每頁有 50 個結果，我希望這個分頁的最大頁數是 200（表中的總條目數為 10k）。 我嘗試了以下方法：

$page_count = 50;
$users = DB::Table('user_totalpoints')->where('points', '>', 0)
        ->orderBy('points', 'desc')
        ->orderBy('id', 'asc')
        ->take(10000)
        ->paginate($page_count);

這樣做的結果是一個分頁，每頁有 50 個結果，但所有條目都來自 user_totalpoints 表。 take(10000) 被忽略，因為分頁只有 50 個。 因此，我現在有數千頁，而不是最多 200 頁。

如何限制 laravel 中分頁的頁數？

Answer 1

$collection = UserTotalPoint::where('points', '>', 0)
                      ->orderby('points', 'desc')
                      ->orderby('id', 'desc')
                      ->take(10000)
                      ->get();


$perPage = 50;

$currentPage = LengthAwarePaginator::resolveCurrentPage();

if ($currentPage == 1) {
    $start = 0;
}
else {
    $start = ($currentPage - 1) * $perPage;
}

$currentPageCollection = $collection->slice($start, $perPage)->all();

$paginatedTop = new LengthAwarePaginator($currentPageCollection, count($collection), $perPage);

$paginatedTop->setPath(LengthAwarePaginator::resolveCurrentPath());


return view('topPoints', ['top' => $paginatedTop ]);

Answer 2

手動分頁器 LengthAwarePaginator

// limit page max to 200 and min to 1
$this->validate($request, [
    'page' => 'required|integer|min:1|max:200'
]);
$page = $request->get('page');
$page_count = 50;
$total = 10000;

$users = DB::Table('user_totalpoints')->where('points', '>', 0)
    ->orderBy('points', 'desc')
    ->orderBy('id', 'asc')
    ->forPage($page, $page_count)
    ->get();
/**
 * use Illuminate\Pagination\LengthAwarePaginator;
 */
$paginator = new LengthAwarePaginator($users, $total, $page_count, $page);
dd($paginator->toArray()); // view result