zhuishuyun_quickapp/app/Modules/User/Models/UserSign.php

<?php

namespace App\Modules\User\Models;

use Illuminate\Database\Eloquent\Model;

class UserSign extends Model
{
    protected $table = 'user_sign';
    protected $fillable = ['uid','price','day','sign_time'];

    public function setCurrentTable($time=''){
        if($time == '201906'){
            $time = '';
        }
        if($time){
            $this->setTable('user_sign'.$time);
        }else{
            $this->setTable('user_sign');
        }
    }
}