custom request in laravel

1/**
2 * Store a new blog post.
3 *
4 * @param  \Illuminate\Http\Request  $request
5 * @return \Illuminate\Http\Response
6 */
7public function store(Request $request)
8{
9    $validated = $request->validate([
10        'title' => 'required|unique:posts|max:255',
11        'body' => 'required',
12    ]);
13
14    // The blog post is valid...
15}