Avoid duplicate email addresses

daniel-lerch · Mar 22, 2024 · 5b41173 · 5b41173
1 parent c469277
commit 5b41173
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/src/TravelBlog/Controllers/RegistrationController.cs b/src/TravelBlog/Controllers/RegistrationController.cs
@@ -28,6 +28,9 @@ public async Task<IActionResult> Post([EmailAddress] string mailAddress, [Requir
         if (!ModelState.IsValid)
             return View("Index", new RegistrationViewModel(mailAddress, givenName, familyName, "Deine Angaben sind unvollständig oder ungültig!"));
 
+        // Avoid duplicate registrations with different casing or Gmail domains
+        mailAddress = mailAddress.ToLowerInvariant().Replace("@googlemail.com", "@gmail.com");
+
         if (await subscriberService.Register(mailAddress, givenName, familyName))
             return View("Success", new RegistrationViewModel(mailAddress, givenName, familyName));
         else