ulthon_information/app/model/PostOutputFile.php

<?php

declare(strict_types=1);

namespace app\model;

use app\common\model\Base;

class PostOutputFile extends Base
{
    protected $name = 'post_output_file';

    public static $autoClearCache = [];

    public function output()
    {
        return $this->belongsTo(PostOutput::class, 'output_id');
    }

    public static function getByOutput(int $outputId)
    {
        return static::where('output_id', $outputId)
            ->order('page', 'asc')
            ->select();
    }
}