Allow for item convertors in forms

Author: jissereitsma

Component/Form/FormViewModel.php

@@ -2,6 +2,7 @@
 
 namespace Loki\AdminComponents\Component\Form;
 
+use Loki\AdminComponents\Form\ItemConvertorInterface;
 use Magento\Framework\App\RequestInterface;
 use Magento\Framework\DataObject;
 use Magento\Framework\ObjectManagerInterface;
@@ -23,7 +24,8 @@ public function __construct(
         protected ButtonFactory $buttonFactory,
         protected ObjectManagerInterface $objectManager,
         protected FieldFactory $fieldFactory,
-        protected RequestInterface $request
+        protected RequestInterface $request,
+        protected array $itemFilters = [],
     ) {
     }
 
@@ -36,11 +38,26 @@ public function getJsData(): array
     {
         return [
             ...parent::getJsData(),
-            'item' => $this->getRepository()->getItem()?->toArray(),
+            'item' => $this->getItemData(),
             'indexUrl' => $this->getIndexUrl(),
         ];
     }
 
+    private function getItemData(): array
+    {
+        $item = $this->getRepository()->getItem();
+        if (false === $item instanceof DataObject) {
+            return [];
+        }
+
+        $itemConvertor = $this->getBlock()->getItemConvertor();
+        if ($itemConvertor instanceof ItemConvertorInterface) {
+            $item = $itemConvertor->afterLoad($item);
+        }
+
+        return $item->toArray();
+    }
+
     public function getIndexUrl(): string
     {
         return $this->urlFactory->create()->getUrl($this->getIndexUri());
@@ -107,6 +124,8 @@ public function getFields(): array
                 if (isset($fieldDefinition['html_attributes'])) {
                     $htmlAttributes = array_merge($htmlAttributes, $fieldDefinition['html_attributes']);
                 }
+
+                $block->addData($fieldDefinition);
             }
 
             $fields[] = $this->fieldFactory->create(

Form/Action/SaveAction.php

@@ -2,6 +2,7 @@
 
 namespace Loki\AdminComponents\Form\Action;
 
+use Loki\AdminComponents\Form\ItemConvertorInterface;
 use Magento\Framework\DataObject;
 use Magento\Framework\Message\Manager;
 use Loki\AdminComponents\Component\Form\FormRepository;
@@ -36,6 +37,11 @@ public function execute(FormRepository $formRepository, array $value): void
             $this->setItemPropertyValue($item, $propertyKey, $propertyValue);
         }
 
+        $itemConvertor = $formRepository->getComponent()->getViewModel()->getBlock()->getItemConvertor();
+        if ($itemConvertor instanceof ItemConvertorInterface) {
+            $item = $itemConvertor->beforeSave($item);
+        }
+
         $providerHandler->saveItem($provider, $item);
         $this->messageManager->addSuccessMessage('Item saved');
     }

view/adminhtml/templates/form/field.phtml

@@ -17,7 +17,6 @@ if (false === $field instanceof Field) {
     $fieldViewModel = $viewModelFactory->create(FieldViewModel::class);
     $field = $fieldViewModel->getField($block);
 }
-
 ?>
 <div class="admin__field">
     <div class="admin__field-label">