How to implement custom paging in laravel?

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Release: 2023-03-14 12:46:01
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For laravel paging, it comes with a paginate method, which is very useful, but it also has limitations.

So I wrote my own paging for this, the specific code is as follows

<?php  
namespace ...;

use ...;
/**
 * 自定义分页类,适合少数据的查询,多数据的时候不推荐
 * Class CustomPaginate
 * @package App\Tools\Paginate
 */
class CustomPaginate
{
  /**
   * 自定义数组分页
   * @param $data = 返回结果
   * @param $page
   * @param $limit
   * @return mixed
   */
  public static function paginate($data, $page = 1, $limit = 10)
  {
    if (!is_numeric($page) || !is_numeric($limit)) {
      return false;
    }
    $count = count($data);
    $data = array_slice($data, ($page - 1) * $limit, $limit);
    return new LengthAwarePaginator($data, $count, $limit, $page);
  }

  /**
   * 参数解释 对外暴露的方法
   * @param $data = array|collection 切记只支持这两种
   * @param $page = 当前页
   * @param $limit = 每一页展示几条
   * @return array|false
   * 返回结果为数组
   * 调用实例: CustomPaginate::paginateToArray($data, $request->page, $request->limit);
   */
  public static function paginateToArray($data, $page = 1, $limit = 10)
  {
    $isValidate = self::validate($data, $page, $limit);           //验证
    if ($isValidate === false) {
      return false;
    }

    $res = self::paginate($data, $page, $limit)->toArray();         //分页数据转换为数组

    //上一页 || 下一页 => path
      if ($res[&#39;prev_page_url&#39;] != null) {
        $prev_page = $page - 1;
        $res[&#39;prev_page_url&#39;] = Paginator::resolveCurrentPath() . "?page=" . $prev_page . "&limit=" . $limit;
      }
      if ($res[&#39;next_page_url&#39;] != null) {
        $next_page = $page + 1;
        $res[&#39;next_page_url&#39;] = Paginator::resolveCurrentPath() . "?page=" . $next_page . "&limit=" . $limit;
      }
    return $res;
  }
  /**
   * 验证参数是否合法
   */
  public static function validate(&$data, &$page = 1, &$limit = 10)
  {
    $page = empty($page) ? 1 : $page;
    $limit = empty($limit) ? 10 : $limit;
    if (!is_array($data) && !$data instanceof Collection) {
      return false;//"自定义分页方法只支持数组数据和集合数据";
    }
    if (!is_numeric($page) || !is_numeric($limit)) {
      return false;//"page limit 参数只支持数字";
    }
    if ($data instanceof Collection) {
      return $data = $data->toArray();
    }
    return $data;
  }
}
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