insert into 2 tables (pivot) array values from multiple select dropdown list

  laravel, laravel-7

I work with events and years, one event can be in several years and a year can have
several events (pivot table created between the two tables).

I change my single dropdown list in multiple list :

<select id="year_id" type="text" class="form-control selectpicker @error('year_id') is-invalid @enderror" name="year_id[]" required multiple>
<option disabled>--Choisir--</option>
        @foreach($years as $year)
                @if(old('year') == $year->id)
                     <option value="{{ $year->id }}" selected>{{ $year->name }}</option>
                     <option value="{{ $year->id }}">{{ $year->name }}</option>


The goal is to select several years for one same event.

I don’t know why, but I think I’m not able to validate the form.

This is my controller code :

public function store(Request $request)

        $validatedData = $request->validate([
            'name' => 'required|string|max:255',
            'mnemonique' => 'required|string|max:255',
            'color' => 'required|string|max:255',
            'year_id[]' => 'required|array',
            'year_id[].*' => 'required|integer|exists:years,id'

        $evenement = new Evenement();
        // $evenement->create($validatedData);


        $evenement = Evenement::create($validatedData);

I’m not able to insert the events into the pivot table and the new event into the event table.

If I use dd(), I still have a refresh of the form, I think I don’t go into the controller…

Do you see something please ?

Thank you in advance.

Source: Laravel

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