crud tag entity, some fix tag

kernel/modules/post/views/form.php

@@ -34,6 +34,9 @@ $form->field(class: \itguild\forms\inputs\Select::class, name: "user_id", params
     ->render();
 
 $entityRelations = new \kernel\EntityRelation();
+if (!isset($model)) {
+    $model = new Post();
+}
 $entityRelations->renderEntityAdditionalPropertyFormBySlug("post", $model);
 
 ?>