volt new overlay

app/main/models/user.rb

@@ -0,0 +1,12 @@
+# By default Volt generates this User model which inherits from Volt::User,
+# you can rename this if you want.
+class User < Volt::User
+  # login_field is set to :email by default and can be changed to :username
+  # in config/app.rb
+  field login_field
+  field :name
+
+  validate login_field, unique: true, length: 8
+  validate :email, email: true
+
+end