what is missing in my code (symfony 5) so that the image inserted in my form can be stored in the database? [closed]

I am a beginner in symfony, I wanted to make a form to insert and store files in the database, I created my form, and here is my controller, and the services.yaml in which there is the path to where store the files, I would like to know what is missing so that the files can be saved in the database.

My controller

<?php
    class ProductController extends AbstractController
{
    /**
     * @Route("/product/new", name="app_product_new")
     */
    public function new(Request $request)
    {
        $product = new Product();
        $form = $this->createForm(ProductType::class, $product);
        $form->handleRequest($request);

        if ($form->isSubmitted() && $form->isValid()) {
            /** @var UploadedFile $brochureFile */
            $brochureFile = $form->get('brochure')->getData();

            // this condition is needed because the 'brochure' field is not required
            // so the PDF file must be processed only when a file is uploaded
            if ($brochureFile) {
                $originalFilename = pathinfo($brochureFile->getClientOriginalName(), PATHINFO_FILENAME);
                // this is needed to safely include the file name as part of the URL
                $safeFilename = transliterator_transliterate('Any-Latin; Latin-ASCII; [^A-Za-z0-9_] remove; Lower()', $originalFilename);
                $newFilename = $safeFilename.'-'.uniqid().'.'.$brochureFile->guessExtension();

                // Move the file to the directory where brochures are stored
                try {
                    $brochureFile->move(
                        $this->getParameter('brochures_directory'),
                        $newFilename
                    );
                } catch (FileException $e) {
                    // ... handle exception if something happens during file upload
                }

                // updates the 'brochureFilename' property to store the PDF file name
                // instead of its contents
                $product->setBrochureFilename($newFilename);
            }

            // ... persist the $product variable or any other work

            $this->entityManager->persist($product);
            $this->entityManager->flush();

            return $this->redirect($this->generateUrl('app_product_list'));
        }

        return $this->render('product/new.html.twig', [
            'form' => $form->createView(),
        ]);
    }
}
?>