Orsdxy

I need a custom product type to be able to use other transaction mail templates.
For that purpose I am using an existing module which contains the following code:

<vendor>/<module>/etc/product_types.xml:

<?xml version="1.0"?>

    <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Catalog:etc/product_types.xsd">

        <type name="customtype" label="Custom Product Type" modelInstance="<vendor><module>ModelProductTypeCustom" composite="true" indexPriority="110" sortOrder="110">

            <priceModel instance="MagentoBundleModelProductPrice" />

            <indexerModel instance="MagentoBundleModelResourceModelIndexerPrice" />

            <stockIndexerModel instance="MagentoBundleModelResourceModelIndexerStock" />

            <allowedSelectionTypes>

                <type name="simple" />

                <type name="virtual" />

            </allowedSelectionTypes>

            <customAttributes>

                <attribute name="refundable" value="true"/>

            </customAttributes>

        </type>

    </config>

<vendor>/<module>/Model/Product/Type/Custom.php:

<?php



namespace <vendor><model>ModelProductType;



class Custom extends MagentoBundleModelProductType

{

    const TYPE_ID = 'customtype';

}

<vendor>/<module>/Setup/UpgradeData.php:

<?php

namespace <vendor><module>/Setup;



use MagentoCatalogApiDataProductAttributeInterface;

use MagentoFrameworkSetupModuleContextInterface;

use MagentoFrameworkSetupModuleDataSetupInterface;

use MagentoFrameworkSetupUpgradeDataInterface;

use MagentoEavSetupEavSetupFactory;

use MagentoEavSetupEavSetup;

use MagentoCatalogModelProduct;

use <vendor><module>ModelProductTypeCustom as CustomProductType;



/**

 * Upgrade Data script

 * @codeCoverageIgnore

 */

class UpgradeData implements UpgradeDataInterface

{

    /**

     * EAV setup factory

     *

     * @var EavSetupFactory

     */

    private $eavSetupFactory;



    /**

     * Init

     *

     * @param EavSetupFactory $eavSetupFactory

     */

    public function __construct(EavSetupFactory $eavSetupFactory)

    {

        $this->eavSetupFactory = $eavSetupFactory;

    }



    /**

     * {@inheritdoc}

     */

    public function upgrade(ModuleDataSetupInterface $setup, ModuleContextInterface $context)

    {

        if (version_compare($context->getVersion(), '0.0.6') < 0) {

            /** Version under 0.0.6 -> Upgrade */

            $eavSetup = $this->eavSetupFactory->create(['setup' => $setup]);



            $fieldList = [

                'price',

                'special_price',

                'special_from_date',

                'special_to_date',

                'minimal_price',

                'cost',

                'tier_price',

                'weight',

                'price_type',

                'sku_type',

                'weight_type',

                'price_view',

                'shipment_type',

                'tax_class_id',

            ];



            foreach ($fieldList as $field) {

                $applyTo = explode(

                    ',',

                    $eavSetup->getAttribute(Product::ENTITY, $field, 'apply_to')

                );

                if (!in_array(CustomProductType::TYPE_ID, $applyTo)) {

                    $applyTo = CustomProductType::TYPE_ID;

                    $eavSetup->updateAttribute(

                        Product::ENTITY,

                        $field,

                        'apply_to',

                        implode(',', $applyTo)

                    );

                }

            }

        }

    }

}

The Upgradescript runs successfull and I can see according changes in catalog_eav_attribute's apply_to column.

With all that done I lack the option to add options for containing products: