collectSubmittedData example

$this->dataByForm[$hash] = array_replace(
            $this->dataByForm[$hash],
            $this->dataExtractor->extractSubmittedData($form)
        );

        // Count errors         if (isset($this->dataByForm[$hash]['errors'])) {
            $this->data['nb_errors'] += \count($this->dataByForm[$hash]['errors']);
        }

        foreach ($form as $child) {
            $this->collectSubmittedData($child);

            // Expand current form if there are children with errors             if (empty($this->dataByForm[$hash]['has_children_error'])) {
                $childData = $this->dataByForm[spl_object_hash($child)];
                $this->dataByForm[$hash]['has_children_error'] = !empty($childData['has_children_error']) || !empty($childData['errors']);
            }
        }
    }

    public function collectViewVariables(FormView $view): void
    {
        

$this->childForm = $this->createChildForm('child');
        $this->view = new FormView();
        $this->childView = new FormView();
    }

    public function testBuildPreliminaryFormTree()
    {
        $this->form->add($this->childForm);

        $this->dataCollector->collectConfiguration($this->form);
        $this->dataCollector->collectDefaultData($this->form);
        $this->dataCollector->collectSubmittedData($this->form);
        $this->dataCollector->buildPreliminaryFormTree($this->form);

        $childFormData = [
            'id' => 'name_child',
            'name' => 'child',
            'type_class' => FormType::class,
            'synchronized' => true,
            'passed_options' => [],
            'resolved_options' => $this->childForm->getConfig()->getOptions(),
            'default_data' => [
                'norm' => null,
                

    /** * Listener for the {@link FormEvents::POST_SUBMIT} event. * * @return void */
    public function postSubmit(FormEvent $event)
    {
        if ($event->getForm()->isRoot()) {
            // Collect the submitted data of each form             $this->dataCollector->collectSubmittedData($event->getForm());

            // Assemble a form tree             // This is done again after the view is built, but we need it here as the view is not always created.             $this->dataCollector->buildPreliminaryFormTree($event->getForm());
        }
    }
}