基于Laravel5.5 在项目实施过程中，需要对从接口中获取的数据（或者通过搜索工具查询出来的数据）进行分页

一、创建手动分页

在laravel自带的分页中，一般是通过数据库查询访问paginate()方法来达到分页的效果 ，like this：

class IndexControllerextends Controller

{  
  publicfunctionindex()
  {
    $person = DB::table('person')->paginate(15);
 
    return view('index.pagTest',['person'=> $person]);
  }
}

查看框架的分页源代码

#vender/laravel/framework/src/Illuminate/Database/Eloquent/Builder.php

/**
   * Paginate the given query.
   *
   * @param int $perPage
   * @param array $columns
   * @param string $pageName
   * @param int|null $page
   * @return \Illuminate\Contracts\Pagination\LengthAwarePaginator
   *
   * @throws \InvalidArgumentException
   */
  public function paginate($perPage = null, $columns = ['*'], $pageName = 'page', $page = null)
  {
    $page = $page ?: Paginator::resolveCurrentPage($pageName);
 
    $perPage = $perPage ?: $this->model->getPerPage();
 
    $results = ($total = $this->toBase()->getCountForPagination())
                  ? $this->forPage($page, $perPage)->get($columns)
                  : $this->model->newCollection();
 
    return $this->paginator($results, $total, $perPage, $page, [
      'path' => Paginator::resolveCurrentPath(),
      'pageName' => $pageName,
    ]);
  }

发现，分页用了 \Illuminate\Contracts\Pagination\LengthAwarePaginator 构造方法，查看这个构造方法

<?php
 
namespace Illuminate\Pagination;
 
use Countable;
use ArrayAccess;
use JsonSerializable;
use IteratorAggregate;
use Illuminate\Support\Collection;
use Illuminate\Support\HtmlString;
use Illuminate\Contracts\Support\Jsonable;
use Illuminate\Contracts\Support\Arrayable;
use Illuminate\Contracts\Pagination\LengthAwarePaginator as LengthAwarePaginatorContract;
 
class LengthAwarePaginator extends AbstractPaginator implements Arrayable, ArrayAccess, Countable, IteratorAggregate, JsonSerializable, Jsonable, LengthAwarePaginatorContract
{
  /**
   * The total number of items before slicing.
   *
   * @var int
   */
  protected $total;
 
  /**
   * The last available page.
   *
   * @var int
   */
  protected $lastPage;
 
  /**
   * Create a new paginator instance.
   *
   * @param mixed $items
   * @param int $total
   * @param int $perPage
   * @param int|null $currentPage
   * @param array $options (path, query, fragment, pageName)
   * @return void
   */
  public function __construct($items, $total, $perPage, $currentPage = null, array $options = [])
  {
    foreach ($options as $key => $value) {
      $this->{$key} = $value;
    }
 
    $this->total = $total;
    $this->perPage = $perPage;
    $this->lastPage = max((int) ceil($total / $perPage), 1);
    $this->path = $this->path !== '/' ? rtrim($this->path, '/') : $this->path;
    $this->currentPage = $this->setCurrentPage($currentPage, $this->pageName);
    $this->items = $items instanceof Collection ? $items : Collection::make($items);
  }