spa-api/app/Models/OrderModel.php

<?php

namespace App\Models;

use App\BaseApp\BaseModel;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Illuminate\Database\Eloquent\Relations\HasOne;

/**
 * 订单表
 */
class OrderModel extends BaseModel
{
    //
    protected $table = 'orders';

    protected $guarded  = [];

    /**
     * 用户关联
     * @return HasOne
     */
    public function user()
    {
        return $this->hasOne(UserModel::class, 'id', 'user_id');
    }

    /**
     * 订单详情
     * @return HasMany
     */
    public function items(): HasMany
    {
        return $this->hasMany(OrderItemModel::class, 'order_id', 'id');
    }
}