xshop/app/Http/Controllers/Admin/GfxController.php

<?php

namespace App\Http\Controllers\Admin;

use App\Http\Controllers\Controller;
use App\Models\Gfx;
use Illuminate\Http\Request;

class GfxController extends Controller
{
    //
    public function index(){
        return view('admin.commons.gfx');
    }

    public function update( Request $request){

        foreach ($request->input('gfx',[]) as $key => $gfx){
            $g = Gfx::where('key',$key)->first();
            if ($g != null){
                $g->value = $gfx;
                $g->save();
            }
        }

        logAdmin(__METHOD__,__CLASS__,null);
        \Artisan::call('client');
        return redirect()->back()->with(['message' => __('GFX of website updated')]);
    }
}