tongnian-h5-api/app/Models/StudioExpress.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class StudioExpress extends Model
{
    protected $table='studio_express';

    public function get_express(){
        return $this->hasMany(StudioExpress::class,'number','number');
    }

    public function get_order(){
        return $this->hasOne(StudioOrder::class,'id','order_id');
    }
}