Validate and Sync multiple objects (checkboxes)

Hello together,

i have a question about validating and storing multiple objects (in this case checkboxes) in Laravel.

Right now, I can have multiple checkboxes in my blade- template and store them into the database without any problems. As soon as I want to validate (over a Validation Request) if approx. one of the checkboxes is checked I cannot save my Object anymore, because I get a: "Array to string conversion" exception. So far I know, that this makes sense. Because the Validation Request returns an array with the values of the "checked" checkboxes.

In this case, I could only use the Validation Request only for validation that approx. one checkbox has a value and add the checkboxes to the model on my own by syncing them, example:

// Save validated data from request
$form= new Form($request->validated());
// unset array of components, because this would not be accepted by the save() Method.
unset($form->components);
auth()->user()->form()->save($form);

// sync the checkboxes
$form->components()->sync($request->components);

I don't think that's pretty clean. How could i avoid to unset $form->components and use the array instead?

StoreFormRequest.php

....

    /**
     * Get the validation rules that apply to the request.
     *
     * @return array
     */
    public function rules()
    {
        return [
            //'components' => 'min:1',
            'components' => 'required',
        ];
    }
...

Form.blade.php

....
<div class="row">
    <div class="col-sm">
        @foreach($components as $component)
            <div class="form-check form-control-lg">
                <input class="form-check-input rounded-circle" type="checkbox"
                       name="components[]"
                       @if( $form->isComponentChecked($component->id)) checked @endif
                       @if($readonly) disabled @endif
                       id="cb{{$component->name}}"
                       value={{$component->id}}>
                <label class="form-check-label" for="cb{{$component->name}}">
                    {{ $component->name }}
                </label>
            </div>
            @if( is_int($loop->iteration / 4 ))
    </div>
    <div class="col-sm">
        @endif
        @endforeach
    </div>
</div>
...

Thank you in advance.

Cheers