ldc-jeusselin/app/Http/Middleware/ValidPro.php

<?php

namespace App\Http\Middleware;

use Closure;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;

class ValidPro
{
    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure  $next
     * @return mixed
     */
    public function handle(Request $request, Closure $next)
    {
        $client_num = Auth::user()->client_number;
        if (!empty($client_num)) {
            return $next($request);
        }
        return redirect()->route('pro.pending-validation');
    }
}