Upgrade notice for the Controller::json() method.

derrabus · derrabus · commit 34e72e072193 · 2016-03-30T19:57:28.000+02:00
diff --git a/UPGRADE-3.1.md b/UPGRADE-3.1.md
@@ -24,6 +24,10 @@ FrameworkBundle
 
  * As it was never an officially supported feature, the support for absolute
    template paths has been deprecated and will be removed in Symfony 4.0.
+ * The abstract `Controller` class now has a `json()` helper method that creates
+   a `JsonResponse`. If you have existing controllers extending `Controller`
+   that contain a method with this name, you need to rename that method to avoid
+   conflicts.
 
 HttpKernel
 ----------
