1 files changed, 27 insertions, 0 deletions
diff --git a/lib/reserve_usernames/validate.rb b/lib/reserve_usernames/validate.rb
new file mode 100644
index 0000000..669c2fb
--- /dev/null
+++ b/lib/reserve_usernames/validate.rb
@@ -0,0 +1,27 @@
+module ReserveUsernames::Validate
+  def self.included(base)
+    base.class_eval do
+
+      validate :check_if_address_is_taken
+
+      protected
+
+      #
+      # Only query ReservedUsername if this is a new record.
+      # Otherwise, validation will always fail because the address
+      # has been taken... by this identity.
+      #
+      def check_if_address_is_taken
+        if new_record? && address
+          username = address.split('@').first
+          if ReservedUsername.find(username)
+            Rails.logger.info("ReserveUsernames - #{username} is taken.")
+            errors.add :address, :taken
+          end
+        end
+      rescue ActiveResource::ResourceNotFound
+      end
+
+    end
+  end
+end