使用Laravel Eloquent连接3个表

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class User extends Model
{
    protected $table = 'users';
}

class Order extends Model
{
    protected $table = 'orders';
}

class Product extends Model
{
    protected $table = 'products';
}

public function orders()
{
    return $this->hasMany(Order::class, 'user_id', 'id');
}

public function user()
{
    return $this->belongsTo(User::class, 'user_id', 'id');
}

public function product()
{
    return $this->belongsTo(Product::class, 'product_id', 'id');
}

public function orders()
{
    return $this->hasMany(Order::class, 'product_id', 'id');
}

$user = User::find(1);
$orders = $user->orders()->with('product')->get();

foreach ($orders as $order) {
    echo "订单号：" . $order->id . "<br>";
    echo "产品名称：" . $order->product->name . "<br>";
    // 其他订单信息...
}