如何在Laravel 8中访问请求类中的模型实例？

// app/Http/Controllers/UserController.php

namespace App\Http\Controllers;

use App\Models\User;
use Illuminate\Http\Request;

class UserController extends Controller
{
    /**
     * Store a new user.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\Http\Response
     */
    public function store(Request $request)
    {
        // 验证请求数据
        $request->validate([
            'name' => 'required|string|max:255',
            'email' => 'required|email|unique:users',
            'password' => 'required|min:8',
        ]);

        // 创建用户模型实例并保存
        $user = User::create([
            'name' => $request->name,
            'email' => $request->email,
            'password' => bcrypt($request->password),
        ]);

        // 返回响应
        return response()->json(['message' => 'User created successfully', 'user' => $user], 201);
    }
}