t_nine/app/Model/ConstructionFile.php

<?php

namespace App\Model;

use Illuminate\Database\Eloquent\Model;

class ConstructionFile extends Model
{
    protected $table = "construction_file"; //指定表
    const CREATED_AT = 'crt_time';
    const UPDATED_AT = 'upd_time';
    protected $dateFormat = 'U';
}