From f4fe6e04c36a788c49fad532aa4216bd5eda5b09 Mon Sep 17 00:00:00 2001
From: Thomas Klein Langenhorst <thomas@iconica.nl>
Date: Tue, 25 Oct 2022 15:49:49 +0200
Subject: [PATCH] added assert to validate

---
 lib/src/address_form.dart | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/src/address_form.dart b/lib/src/address_form.dart
index 5b5d10b..3378e3d 100644
--- a/lib/src/address_form.dart
+++ b/lib/src/address_form.dart
@@ -169,6 +169,8 @@ class AddressController extends ChangeNotifier {
   AddressModel get model => _model;
 
   bool validate() {
+    assert(_formKey.currentState != null,
+        'Validation can only be used if a FormKey is attached to the current Form');
     return _formKey.currentState!.validate();
   }