thinkphp/library/think/paginator/Collection.php

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<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006~2016 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: zhangyajun <448901948@qq.com>
// +----------------------------------------------------------------------

namespace think\paginator;

use Exception;
use think\Paginator;

/**
 * Class Collection
 * @package think\paginator
 * @method integer total()
 * @method integer listRows()
 * @method integer currentPage()
 * @method string render()
 * @method Paginator fragment($fragment)
 * @method Paginator appends($key, $value)
 * @method integer lastPage()
 * @method boolean hasPages()
 */
class Collection extends \think\Collection
{

    /** @var Paginator */
    protected $paginator;

    public function __construct($items = [], Paginator $paginator = null)
    {
        $this->paginator = $paginator;
        parent::__construct($items);
    }

    public static function make($items = [], Paginator $paginator = null)
    {
        return new static($items, $paginator);
    }
    
    public function toArray()
    {
        if ($this->paginator) {
            try {
                $total = $this->total();
            } catch (Exception $e) {
                $total = null;
            }

            return [
                'total'        => $total,
                'per_page'     => $this->listRows(),
                'current_page' => $this->currentPage(),
                'data'         => parent::toArray()
            ];