use Collections forms symfony to export data to dompdf

[othye]

for a few days I am blocked, if someone can help me with the good practice, I explain:

I want to retrieve data from the database: entity (expression_besoin) contains the information of a purchase with ref , requester ... and the entity besoin_article contains the items products in the previous entity, there is a OneToMany relationship between the two entities.

the objective is to retrieve the several expression needs of articles in a form in order to modify whether the quantities are necessary or to delete them, then to be able to generate a PDF file which contains all the needs and the articles which correspond to them.
controller:

    /**
     * @Route("/extraire_commandes", name="export_commandes", methods={"GET","POST"})
     */
    public function exportCommandes(ExBesoinRepository $exBesoinRepository, Request $request): Response
    {        
        $datas = new FiltreBesoin();
        $form = $this->createForm(FiltreBesoinType::class, $datas);
        $form->handleRequest($request);
        $exBesoin = $exBesoinRepository->exportCommande($datas);     
        $valueFournisseur = $form['fournisseur']->getData();
        
        $formExport = $this->createFormBuilder(array('besoin' => $exBesoin));
        $formExport->add('besoin', CollectionType::class, array(
            'entry_type' => ExBesoinToCommandeType::class,   
        ));
        
        $formExport = $formExport->getForm();
        $formExport->handleRequest($request);            
        $formValue = $formExport->getData();
        if ($formExport->isSubmitted() && $formExport->isValid()) {
            
            $html = $this->renderView('admin/besoins/epicerie/exportPdf.html.twig', [
                'besoins' => $formValue,
            ]);
            $html .= '<link rel="stylesheet" href="/build/css/app.css"> ';
            $html .= '<script src="/build/vendors~js/app.js"></script><script src="/build/runtime.js"></script><script src="/build/vendors-node_modules_popperjs_core_lib_index_js-node_modules_symfony_stimulus-bridge_dist_ind-f4bfca.js"></script>';
            $name = 'test';
            $options = new Options();
            $options->set('isHtml5ParserEnabled', true);
            $options->set('isRemoteEnabled', true); 
            $dompdf = new Dompdf($options);
            $dompdf->loadHtml($html);
            // (Optional) Setup the paper size and orientation
            $dompdf->setPaper('A4', 'portrait');
            // Render the HTML as PDF
            $dompdf->render();
            // Output the generated PDF to Browser
            $dompdf->stream($name, array('Attachment' => 0));
            return new Response('', 200, [
                'Content-Type' => 'application/pdf',
            ]);
        }
                      
        return $this->render('admin/besoins/epicerie/export.html.twig', [
            'besoins' => $exBesoin,
            'form' => $form->createView(),
            'valueFournisseur' => $valueFournisseur,
            //'idBesoin' => $idBesoin,
            'formExport' => $formExport->createView(),
            'valu'=> $formValue
        ]);
    }

Forms :

ExBesoinToCommandeType 
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('besoinArs', CollectionType::class, [
                'entry_type' => BesoinArToCommandeType::class,                
                'allow_delete' => true,
                //'allow_add' => false,
                'prototype'    => true,
                'by_reference' => false,
                'delete_empty' => true,
                'entry_options' => [
                    'label' => true,
                ]
            ])           
        ;
    }

BesoinArToCommandeType 
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('article', EntityType::class, [
                'class' => Article::class,
                'label' => false,
                'attr' =>[
                    'class' => 'arSelect form-control-sm',
                    'data-live-search' => 'true',
                ],
                'placeholder' => 'Selectionner un article ',
                'query_builder' => function (EntityRepository  $er) {
                    $qb = $er->createQueryBuilder('a')
                    ->innerJoin('a.category', 'c')
                    ->where('c.is_legume = 0')
                    ;                         
                    return $qb;
                },
                'group_by' => function (Article $article) {
                    return $article->getCategory()->getLibele();
                }
            ])
            ->add('quantity', TextType::class, [
                'label' => ' ',
                'attr' =>[
                    'class' => 'quantity form-control-sm'
                ]
            ])
        ;
    }

Until I get my data back without problem, the getData() of the form contains all my data before the submit, but when I validate to generate my pdf file, it does not contain all the data. I use a filter system that allows me to select the expressions of need between two dates, by requester or by supplier, and the problem is linked to this filter because when I generate the pdf of the data without filter it works but when I filter my data this is where my data changes and I don't recover the filtered data, I will be grateful if someone unblocks me or tell me where the problem comes from.

[MatTheCat]

Could you provide a reproducer?

[othye]

Hello , yes
Error : App\Entity\ExBesoin object not found by the @ParamConverter annotation.

[stof]

this is not a reproducer

[othye]

Sorry, I think I misunderstood, I followed the procedure on the link, when I launched the local web server on the url where the problem comes from it gave me this error, must it open an issue on bug_app and give you the link or what should I do, I'm sorry I'm still an amateur of symfony

[stof]

Please read again the documentation in the link given by @MatTheCat. A reproducer is a piece of code that allows us to reproduce the issue (to be able to debug it). As long as the issue happens only on your own machine, only you can debug it.