Use ProductAssociationType instead of extension

src/Sylius/Bundle/AdminBundle/Form/Extension/ProductTypeExtension.php

@@ -13,6 +13,7 @@
 
 namespace Sylius\Bundle\AdminBundle\Form\Extension;
 
+use Sylius\Bundle\AdminBundle\Form\Type\ProductAssociationsType;
 use Sylius\Bundle\CoreBundle\Form\Type\Product\ProductImageType;
 use Sylius\Bundle\ProductBundle\Form\Type\ProductType;
 use Symfony\Component\Form\AbstractTypeExtension;
@@ -36,6 +37,9 @@ public function buildForm(FormBuilderInterface $builder, array $options): void
                 'label' => 'sylius.form.product.images',
                 'block_name' => 'entry',
             ])
+            ->add('associations', ProductAssociationsType::class, [
+                'label' => false,
+            ])
         ;
     }
 

src/Sylius/Bundle/AdminBundle/Form/Type/ProductAssociationsType.php

@@ -0,0 +1,57 @@
+<?php
+
+/*
+ * This file is part of the Sylius package.
+ *
+ * (c) Sylius Sp. z o.o.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Sylius\Bundle\AdminBundle\Form\Type;
+
+use Doctrine\Common\Collections\Collection;
+use Sylius\Bundle\ProductBundle\Form\Type\ProductAssociationsType as BaseProductAssociationsType;
+use Sylius\Component\Product\Model\ProductAssociationInterface;
+use Sylius\Component\Product\Model\ProductAssociationTypeInterface;
+use Sylius\Component\Product\Model\ProductInterface;
+use Symfony\Component\Form\AbstractType;
+use Symfony\Component\Form\DataTransformerInterface;
+use Symfony\Component\Form\FormBuilderInterface;
+use Symfony\Component\OptionsResolver\OptionsResolver;
+
+final class ProductAssociationsType extends AbstractType
+{
+    /**
+     * @param DataTransformerInterface<Collection<array-key, ProductAssociationInterface>, Collection<array-key, ProductInterface>> $productsToProductAssociationsTransformer
+     */
+    public function __construct(
+        private readonly DataTransformerInterface $productsToProductAssociationsTransformer,
+    ) {
+    }
+
+    public function buildForm(FormBuilderInterface $builder, array $options): void
+    {
+        $builder->resetModelTransformers();
+        $builder->addModelTransformer($this->productsToProductAssociationsTransformer);
+    }
+
+    public function configureOptions(OptionsResolver $resolver): void
+    {
+        $resolver->setDefaults([
+            'entry_type' => ProductAutocompleteChoiceType::class,
+            'entry_options' => fn (ProductAssociationTypeInterface $productAssociationType) => [
+                'label' => $productAssociationType->getName(),
+                'multiple' => true,
+            ],
+        ]);
+    }
+
+    public function getParent(): string
+    {
+        return BaseProductAssociationsType::class;
+    }
+}

src/Sylius/Bundle/AdminBundle/Resources/config/services/form.xml

@@ -56,6 +56,11 @@
             <tag name="form.type_extension" />
         </service>
 
+        <service id="sylius.form.extension.type.product_image" class="Sylius\Bundle\AdminBundle\Form\Extension\ProductImageTypeExtension">
+            <argument>%sylius.model.product_variant.class%</argument>
+            <tag name="form.type_extension" />
+        </service>
+
         <service id="sylius_admin.form.extension.type.channel" class="Sylius\Bundle\AdminBundle\Form\Extension\ChannelTypeExtension">
             <tag name="form.type_extension" extended-type="Sylius\Bundle\ChannelBundle\Form\Type\ChannelType" priority="50" />
         </service>

src/Sylius/Bundle/AdminBundle/Resources/config/services/product/form.xml

@@ -17,13 +17,14 @@
             <tag name="form.type_extension" />
         </service>
 
-        <service id="sylius_admin.form.extension.type.product_associations" class="Sylius\Bundle\AdminBundle\Form\Extension\ProductAssociationsTypeExtension">
-            <tag name="form.type_extension" />
+        <service id="sylius_admin.form.type.product_associations" class="Sylius\Bundle\AdminBundle\Form\Type\ProductAssociationsType">
+            <argument type="service" id="sylius_admin.form.type.data_transformer.products_to_product_associations" />
+            <tag name="form.type" />
         </service>
 
-        <service id="sylius.form.extension.type.product_image" class="Sylius\Bundle\AdminBundle\Form\Extension\ProductImageTypeExtension">
-            <argument>%sylius.model.product_variant.class%</argument>
-            <tag name="form.type_extension" />
+        <service id="sylius_admin.form.type.data_transformer.products_to_product_associations" class="Sylius\Bundle\AdminBundle\Form\DataTransformer\ProductsToProductAssociationsTransformer">
+            <argument type="service" id="sylius.factory.product_association" />
+            <argument type="service" id="sylius.repository.product_association_type" />
         </service>
     </services>
 </container>