在laravel注册时如何上传图片？

'disks' => [
    // ...
    'public' => [
        'driver' => 'local',
        'root' => public_path('uploads'),
        'url' => env('APP_URL').'/uploads',
        'visibility' => 'public',
    ],
],

<form action="{{ route('register') }}" method="POST" enctype="multipart/form-data">
    @csrf
    
    <div class="form-group">
        <label for="avatar">头像</label>
        <input id="avatar" type="file" name="avatar" accept="image/*">
    </div>

    <!-- 其他注册表单字段 -->

    <button type="submit">注册</button>
</form>

use Illuminate\Support\Facades\Storage;
use Illuminate\Support\Facades\File;

public function register(Request $request)
{
    // 验证其他注册表单字段...

    // 保存上传的图片
    if ($request->hasFile('avatar')) {
        $avatar = $request->file('avatar');
        $filename = time() . '_' . $avatar->getClientOriginalName();
        Storage::disk('public')->putFileAs('avatars', $avatar, $filename);
        $user->avatar = 'avatars/' . $filename;
    }

    // 创建用户并保存到数据库...

    // 返回注册成功或失败的响应...
}

<img src="{{ asset($user->avatar) }}" alt="Avatar">