Validate and save family values

use Bjanczak\FilamentFlexFields\Support\Components\Schema\FamilySchemaDefinition;
use Bjanczak\FilamentFlexFields\Support\Components\Schema\FamilyRenderContext;
use Bjanczak\FilamentFlexFields\Support\Components\Schema\FamilySchemaSubmission;
use Illuminate\Support\Arr;

// $definitions and $context come from your trusted server-side schema.
// The payload uses the same statePathPrefix as the form.
$prepared = app(FamilySchemaSubmission::class)->prepare(
    values: ['attributes' => $request->input('attributes', [])],
    definitions: $definitions,
    context: $context,
    authorizeWrite: fn (
        FamilySchemaDefinition $field,
        FamilyRenderContext $context,
    ): bool => $fieldPolicy->canEdit($actor, $customer, $field->slug),
);

foreach ($definitions as $field) {
    $path = $context->statePath($field->slug);

    if (Arr::has($prepared, $path)) {
        $customer->setFlexFieldValue(
            $field->slug,
            data_get($prepared, $path),
        );
    }
}

$customer->save();