This ensures that email addresses contain only lowercase letters, and that an identity's destination is a valid Email.

1 files changed, 7 insertions, 1 deletions

diff --git a/users/app/models/email.rb b/users/app/models/email.rb
index 89c31bb..f38f2f5 100644
--- a/users/app/models/email.rb
+++ b/users/app/models/email.rb
@@ -3,10 +3,16 @@ class Email < String
 
   validates :email,
     :format => {
-      :with => /\A([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})\Z/,
+      :with => /\A([^@\s]+)@((?:[-a-zA-Z0-9]+\.)+[a-zA-Z]{2,})\Z/, #checks format, but allows lowercase
       :message => "needs to be a valid email address"
     }
 
+  validates :email,
+    :format => {
+      :with => /\A[^A-Z]*\Z/, #forbids uppercase characters
+      :message => "letters must be lowercase"
+    }
+
   def to_partial_path
     "emails/email"
   end