Initial commit

app/validators/email_validator.rb

@@ -0,0 +1,9 @@
+class EmailValidator < ActiveModel::EachValidator
+  EMAIL_REGEX = /\A([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})\z/i
+
+  def validate_each(record, attribute, value)
+    unless value =~ EMAIL_REGEX
+      record.errors[attribute] << (options[:message] || "is not an email")
+    end
+  end
+end