Unlimited parameters in route

PageController.php

<?php

public function show($slugs_string){
    $slugs = explode('/', $slugs_string);
    $page = null;

    foreach($slugs as $key => $slug){
        $page = Page::where('slug', $slug)
            ->where('parent_id', '=', is_null($page)?null:$page->id)
            ->firstOrFail();
        // Another solution:
        //  ->first()
        // If $page === null return 404 error

        if($key == 0 && $page->parent){
            return redirect()->route('front.main.home');
        }
    }

    return view('front.page.show', compact('page'));
}

routes.php

<?php

//Should be last in routes list
Route::get('{slugs_string}', [
    'as' => 'front.page.show', 'uses' => 'PageController@show'
])->where('slugs_string', '.*');

A query in a loop ? Maybe use whereOr