Is there a lightweight method to check if emoji is supported in iOS?

Question

I'm gonna implement a emoji picker supporting Emoji List, v14.0, which could show only compatible emojis, but I don't know how to check if specific emoji is compatible on current iOS version. There are several ways I found:

1. Render to PNG and compare it with default PNG (see https://stackoverflow.com/a/41393387/7484856), which might be CPU-intensive.
2. Ask CTFontGetGlyphsForCharacters to check if current emoji could be supported (see https://stackoverflow.com/a/39606543/7484856), which seems good, but it fails to check emoji consists of two or more emojis. For example, 😮‍💨 = (😮 U+1F62E U+200D 💨 U+1F4A8), which is actually not supported on iOS 13, but CTFontGetGlyphsForCharacters still returns true because it could be represented as 😮💨.
3. Persist emoji list to several .plist files for each iOS version, which requires some effort to maintain a lot of emoji lists.

Answer 1

So quick update here, i finally solved my problem. my misunderstanding was that it's possible to send multiple objects to the twig template. So that's my final code :

   class descriptionFilm extends AbstractController{
     /**
     * @Route("/details/{id}", name="description")
     * @Route("/", name="home")
     */


    public function show( ManagerRegistry $doctrine, $id, Request $request): Response {
        $film = $doctrine->getRepository(Film::class)->find($id);

        $form = $this->createFormBuilder()
             ->add('submitForm', SubmitType::class, ['label'=>'delete film '])
             ->getForm()
        ; 

        if($form->isSubmitted() && $form->isValid()){
//Do some stuff here

            return $this->redirectToRoute('home');
        }

        $form ->handleRequest($request);

   

        return $this->render('details/description.html.twig', ['film' => $film, 'deleteFilm' => $form->createView()]);


    }