```ruby
GDS::SSO.config do |config|
  config.user_model   = 'User'
  config.oauth_id     = ENV['OAUTH_ID'] || "abcdefghjasndjkasndcontenttagger"
  config.oauth_secret = ENV['OAUTH_SECRET'] || "secret"
  config.oauth_root_url = Plek.find('signon')
end
```

Handle external URLs for Signon
user
```ruby
GDS::SSO.config do |config|
  config.user_model   = 'User'
  config.oauth_id     = ENV['OAUTH_ID'] || "abcdefghjasndjkasndcontenttagger"
  config.oauth_secret = ENV['OAUTH_SECRET'] || "secret"
  config.oauth_root_url = Plek.new.external_url_for('signon')
end
```
assistant