Laravel sync not working with empty array

Question

I've a method looks like this:

public function saveContacts(Request $request)

{

    if($request->contacts) {

        $contacts = collect($request->contacts)->pluck('id');

        $this->contacts()->sync($contacts->toArray());

    }

}

It's working but if

$request->contacts

is an empty array it does not remove all records. What could be the case here?

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Answer 1

You can do this:

if ($request->contacts) {
    $contacts = collect($request->contacts)->pluck('id')->toArray();
    if (empty($contacts)) {
        $this->contacts()->detach();
    } else {
        $this->contacts()->sync($contacts);
    }
}

Laravel sync not working with empty array

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