Allow sign in via case insensitive email address

app/models/internal_user.rb

@@ -2,7 +2,7 @@ class InternalUser < User
 
   authenticates_with_sorcery!
 
-  validates :email, presence: true, uniqueness: true
+  validates :email, presence: true, uniqueness: true, case_sensitive: false
   validates :password, confirmation: true, if: :password_void?, on: :update, presence: true
   validates :role, inclusion: {in: ROLES}
 

config/initializers/sorcery.rb

@@ -158,7 +158,7 @@ Rails.application.config.sorcery.configure do |config|
     # downcase the username before trying to authenticate, default is false
     # Default: `false`
     #
-    # user.downcase_username_before_authenticating =
+    user.downcase_username_before_authenticating = true
 
 
     # change default email attribute.