Detect resourceModel for grid repository just like with form repository

Author: jissereitsma

Component/Grid/GridRepository.php

@@ -105,6 +105,10 @@ public function getResourceModel(): ?AbstractDb
     {
         $block = $this->getComponent()->getBlock();
         $resourceModelClass = $block->getResourceModel();
+        if (empty($resourceModelClass)) {
+            $resourceModelClass = $this->getProviderHandler()->getResourceModelClass($this->getProvider());
+        }
+
         if (empty($resourceModelClass)) {
             return null;
         }

ProviderHandler/RepositoryHandler.php

@@ -17,6 +17,7 @@
 use Magento\Framework\Model\ResourceModel\Db\AbstractDb as AbstractResourceModel;
 use Magento\Framework\DataObject;
 use Magento\Framework\ObjectManagerInterface;
+use ReflectionClass;
 use ReflectionParameter;
 use RuntimeException;
 use Loki\AdminComponents\Grid\State as GridState;
@@ -223,7 +224,7 @@ private function getSearchFilterGroup(GridState $gridState): ?FilterGroup
 
     public function getModelClass(object $provider): bool|string
     {
-        $providerReflection = new \ReflectionClass($provider);
+        $providerReflection = new ReflectionClass($provider);
         $methodReflection = $providerReflection->getMethod('save');
 
         /** @var ReflectionParameter $parameter */