twong329/app/models/redis/SystemCarousel.php

<?php

namespace app\models\redis;

use tw\redis\CarouselRds;

/**
 * Class SystemCarousel
 * @package app\models\redis
 */
class SystemCarousel
{
    /*
     格式:
            {
                "text": "<span style=\"color:2343;\"></span>",
                "uri": "page/boards",
            }
     uri 为客户端路由, 用于客户端跳转
     */
    public static function add($text, $uri = '', $h5uri = '')
    {
        $val = json_encode([
            'id' => 0, // compatible
            'info' => $text,
            'url' => $uri,
            'wap_url' => $h5uri,
            'show' => '2',  // compatible
        ]);
        return (new CarouselRds)->lpush('', $val);
    }

    public static function getFirst($n)
    {
        $arrStr = (new CarouselRds)->lrange('', 0, $n) ?? '[]';
        $rv = [];
        foreach ($arrStr as $str) {
            $rv[] = json_decode($str);
        }
        return $rv;
    }

    public static function removeTrash($start = 10)
    {
        return (new CarouselRds)->ltrim('', 0, $start - 1);
    }
}