Laravel store and update form - php

Question

I would like to update a form, I mentioned that the form is already saved in the database(function store). I want to edit the form and update it in the database(function update).
I only want to UPDATE the "tags", this is giving me an error because it is in another table.
I would need your help because I can't do it, I tried different methods but didn't succeed.
public function store(Request $request)
{
// process the listing creation form
$validationArray = [
'title' => 'required',
'company' => 'required',
'logo' => 'required|image|mimes:jpeg,png,jpg,gif,svg|max:9048',
'location' => 'required',
'service' => 'required',
'apply_link' => 'required|url',
'content' => 'required',
'payment_method_id' => 'required'
];
if (!Auth::check()) {
$validationArray = array_merge($validationArray, [
'email' => 'required|email|unique:users',
'password' => 'required|confirmed|min:5',
'name' => 'required',
'phone' => 'required|numeric|min:10|starts_with:0'
]);
}
$request->validate($validationArray);
// is a user signed in ? if not, create one and authenticate
$user = Auth::user();
if (!$user) {
$user = User::create([
'name' => $request->name,
'email' => $request->email,
'password' => Hash::make($request->password),
'phone' => $request->phone
]);
$user->createAsStripeCustomer();
Auth::login($user);
}
// process the payment and create the listing
try {
$amount = 9900; // $99.00 USD in cents
if ($request->filled('is_highlighted')) {
$amount += 1000;
}
$user->charge($amount, $request->payment_method_id);
$md = new \ParsedownExtra();
$listing = $user->listings()
->create([
'title' => $request->title,
'slug' => Str::slug($request->title) . '-' . rand(1111, 9999),
'company' => $request->company,
'logo' => basename($request->file('logo')->store('public')),
'location' => $request->location,
'apply_link' => $request->apply_link,
'content' => $md->text($request->input('content')),
'is_highlighted' => $request->filled('is_highlighted'),
'is_active' => true
]);
**foreach (explode(',', $request->tags) as $requestTag) {
$tag = Tag::firstOrCreate([
'slug' => Str::slug(trim($requestTag))
], [
'name' => ucwords(trim($requestTag))
]);
$tag->listings()->attach($listing->id);
}**
foreach (explode(',', $request->service) as $requestService) {
$service = Service::firstOrCreate([
'service_name' => ucwords(trim($requestService))
]);
$service->listings()->attach($listing->id);
}
return redirect()->route('user.dashboard')->with('success', 'Anuntul tau a fost publicat!');
} catch (\Exception $e) {
return redirect()->back()
->withErrors(['error' => $e->getMessage()]);
}
} $tag->listings()->attach($listing->id);
}
public function edit($id)
{
$listing = Listing::findOrFail($id);
if (Auth::check() && Auth::user()->id == $listing->user_id) {
$listing = DB::table('listings')
->where('id', $id)
->first();
return view('listings.edit', compact('listing'));
} else {
return (redirect('/dashboard'));
}
}
public function update(Request $request, $id)
{
//working in progress...
$this->validate($request,[
'title' => 'required',
'company' => 'required',
'logo' => 'file|max:2048|required|mimes:jpeg,jpg,png',
'location' => 'required',
'apply_link' => 'required|url',
'content' => 'required'
// 'payment_method_id' => 'required'
]);
$data = Listing::find($id);
$data->title = $request->title;
$data->company = $request->company;
$data->logo = basename($request->file('logo')->store('public'));
$data->location = $request->location;
$data->apply_link = $request->apply_link;
$data['tags'] = explode(',', $request->tags); // <-this one
$data->content= $request->content;
// $data['is_highlighted'] = $request->is_highlighted;
$data['user_id'] = Auth::user()->id;
$data->save();
// DB::table('listings')->where('id', $id)->update($data);
return redirect()->back()->with('success', 'success');
}