create/edit controller method

<?php

namespace App\Http\Controllers;

use App\Http\Requests\IPCreateRequest;
use App\Http\Requests\IPEditRequest;
use App\IP_Pool;
use Illuminate\Http\Request;
use Illuminate\Support\ViewErrorBag;

class IPController extends Controller
{
    /**
     * Show the form for editing the specified resource.
     *
     * @param  \App\IP_Pool $iP_Pool
     *
     * @return \Illuminate\Http\Response
     */
    public
    function edit(IP_Pool $ip)
    {
        return view("ip.edit", ["ip" => $ip]);
    }

    /**
     * Update the specified resource in storage.
     *
     * @param  \Illuminate\Http\Request $request
     * @param  \App\IP_Pool             $iP_Pool
     *
     * @return \Illuminate\Http\Response
     */
    public
    function update(IPEditRequest $request, IP_Pool $ip)
    {
// get validated values
        $validated = $request->validated();
// is there an entry for the ip -> search
        $found     = IP_Pool::where("ip", "=", $validated['edit_ip'])->get();
// found an ip? yes? is it the same (same id)?
        if (optional($found)->count() > 1 || (optional($found)->count() == 1 && $found->first()->id != $ip->id))
        {
// ip already in use with different id
            return back()->withInput()->with("errors", "IP wird bereits verwendet!");
        } else
        {
// assign values
            $ip->ip   = $validated['edit_ip'];
            $ip->name = $validated['edit_name'];
// something changed?
            if ($ip->isDirty())
            {
// save it
                $ip->save();
// return with info
                return redirect()->route("ip.edit", ["ip" => $ip->id])->with("status", "Daten erfolgreich gespeichert");
            }
// nothing changed. just return
            return redirect()->route("ip.edit", ["ip" => $ip->id]);
        }
    }
}