Allow creatig FridgeProductLine from fridge form

src/Controller/FridgeController.php

@@ -30,10 +30,14 @@ class FridgeController extends AbstractController
 
         $form->handleRequest($request);
         if ($form->isSubmitted() && $form->isValid()) {
+            foreach ($fridge->getProductLines() as $productLine) {
+                $productLine->setFridge($fridge);
+                $em->persist($productLine);
+            }
             $em->persist($fridge);
             $em->flush();
 
-            return $this->redirectToRoute('fridge_list');
+//            return $this->redirectToRoute('fridge_list');
         }
 
         return $this->render('fridge/single.html.twig', [

src/Entity/Fridge.php

@@ -29,6 +29,11 @@ class Fridge
         $this->productLines = new ArrayCollection();
     }
 
+    public function __toString(): string
+    {
+        return $this->name;
+    }
+
     public function getId(): ?int
     {
         return $this->id;

src/Form/FridgeProductLineType.php

@@ -0,0 +1,16 @@
+<?php
+
+namespace App\Form;
+
+use App\Entity\FridgeProductLine;
+use Symfony\Component\OptionsResolver\OptionsResolver;
+
+class FridgeProductLineType extends ProductLineType
+{
+    public function configureOptions(OptionsResolver $resolver): void
+    {
+        $resolver->setDefaults([
+            'data_class' => FridgeProductLine::class,
+        ]);
+    }
+}

src/Form/FridgeType.php

@@ -4,6 +4,7 @@ namespace App\Form;
 
 use App\Entity\Fridge;
 use Symfony\Component\Form\AbstractType;
+use Symfony\Component\Form\Extension\Core\Type\CollectionType;
 use Symfony\Component\Form\Extension\Core\Type\SubmitType;
 use Symfony\Component\Form\FormBuilderInterface;
 use Symfony\Component\OptionsResolver\OptionsResolver;
@@ -15,7 +16,10 @@ class FridgeType extends AbstractType
         $builder
             ->add('name')
             ->add('description')
-            ->add('productLines')
+            ->add('productLines', CollectionType::class, [
+                'entry_type' => FridgeProductLineType::class,
+                'allow_add' => true,
+            ])
             ->add('save', SubmitType::class)
         ;
     }

src/Form/ProductLineType.php

@@ -0,0 +1,17 @@
+<?php
+
+namespace App\Form;
+
+use Symfony\Component\Form\AbstractType;
+use Symfony\Component\Form\FormBuilderInterface;
+
+abstract class ProductLineType extends AbstractType
+{
+    public function buildForm(FormBuilderInterface $builder, array $options): void
+    {
+        $builder
+            ->add('product')
+            ->add('count')
+        ;
+    }
+}