Adds content migration, fixing upgrading from Craft 4

src/migrations/m240620_150738_content_refactor_elements.php

@@ -0,0 +1,39 @@
+<?php
+
+namespace craft\digitalproducts\migrations;
+
+use craft\db\Query;
+use craft\digitalproducts\db\Table;
+use craft\digitalproducts\Plugin;
+use craft\migrations\BaseContentRefactorMigration;
+
+/**
+ * m240620_150738_content_refactor_elements migration.
+ */
+class m240620_150738_content_refactor_elements extends BaseContentRefactorMigration
+{
+    /**
+     * @inheritdoc
+     */
+    public function safeUp(): bool
+    {
+        // Migrate digital products by product type
+        foreach (Plugin::getInstance()->getProductTypes()->getAllProductTypes() as $productType) {
+            $this->updateElements(
+                (new Query())->from(Table::PRODUCTS)->where(['typeId' => $productType->id]),
+                $productType->getProductFieldLayout()
+            );
+        }
+
+        return true;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function safeDown(): bool
+    {
+        echo "m240620_150738_content_refactor_elements cannot be reverted.\n";
+        return false;
+    }
+}