1 files changed, 9 insertions, 0 deletions
diff --git a/app/php/web/FacadeTemplateControl.php b/app/php/web/FacadeTemplateControl.php
index b713f49..05d148c 100644
--- a/app/php/web/FacadeTemplateControl.php
+++ b/app/php/web/FacadeTemplateControl.php
@@ -13,6 +13,15 @@ class FacadeTemplateControl extends TemplateControl {
         return $this->getControlState('Facade');
     }
 
+    public function onPreRender($param) {
+        parent::onPreRender($param);
+        if (!$this->getFacade()) {
+            throw new TInvalidDataValueException(
+                'FacadeTemplateControl requires a Facade instance'
+            );
+        }
+    }
+
 }
 
 ?>