Bisame/bisame/app/Http/Requests/PostRequest.php

<?php

namespace App\Http\Requests;

use App\Http\Requests\Request;

class PostRequest extends Request
{

	public function authorize()
	{
		return true;
	}

	public function rules()
	{
		return [
			'titre' => 'required|max:80',
			'contenu' => 'required',
			'tags' => ['Regex:/^[A-Za-z0-9-éèàù]{1,50}?(,[A-Za-z0-9-éèàù]{1,50})*$/']

		];
	}

}