ConfigController.php

<?php

namespace App\Http\Controllers;

use App\Models\Config;
use Illuminate\Http\Request;
use App\Rules\Numeros_USP;

class ConfigController extends Controller
{
    public function show()
    {
        // menu "Sincronizar ..."

        $this->authorize('admin');
        \UspTheme::activeUrl('configs');
        $config = Config::all()->last();
        if ($config == null) {
            $config = new Config;
            $config->save();
        }
        $codpes_sem_vinculo = $config->codpes_sem_vinculo;
        return view('configs/edit', compact('codpes_sem_vinculo'));
    }

    /**
     * Update the specified resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \App\Config  $config
     * @return \Illuminate\Http\Response
     */
    public function update(Request $request)
    {
        // menu "Sincronizar ..." -> botão "Enviar"

        $this->authorize('admin');
        $request->validate([
            'codpes_sem_vinculo' => [new Numeros_USP($request->codpes_sem_vinculo)],
        ]);
        $codpes_sem_vinculo = explode(',', $request->codpes_sem_vinculo);
        $codpes_sem_vinculo = array_map('trim', $codpes_sem_vinculo);
        $codpes_sem_vinculo = implode(',', $codpes_sem_vinculo);

        $config = Config::all()->last();
        $config->codpes_sem_vinculo = $codpes_sem_vinculo;
        $request->session()->flash('alert-info', 'Números USP alterados com sucesso');
        $config->save();
        return redirect()->back();
    }
}