Feature: exports for aside activities

src/Bundle/ChillMainBundle/Export/Helper/DateTimeHelper.php

@@ -35,6 +35,10 @@ class DateTimeHelper
                 return '';
             }
 
+            if ($value instanceof \DateTimeInterface) {
+                return $value;
+            }
+
             // warning: won't work with DateTimeImmutable as we reset time a few lines later
             $date = DateTime::createFromFormat('Y-m-d', $value);
             $hasTime = false;