apply extensions only on get

fix date

src/Doctrine/Access/Extensions/DateTimeConstraintExtension.php

@@ -14,7 +14,11 @@ class DateTimeConstraintExtension implements AccessExtensionInterface {
     }
     public function support(string $name): bool
     {
-        return $this->requestStack->getMainRequest()->get('_time_constraint', true) == true;
+        return
+            (
+                $this->requestStack->getMainRequest()->isMethod('GET') &&
+                $this->requestStack->getMainRequest()->get('_time_constraint', true) == true
+            );
     }
 
     public function addWhere(QueryBuilder $queryBuilder)