Mozilla has announced that Persona will be shutting down November 2016. warden-browserid relies on the Persona service and will stop functioning properly once Persona is shut down. While it is possible to self-host Persona and configure warden-browserid to rely on your own instance, this is difficult and not recommended. See the wiki page linked above for recommended alternatives to Persona for authentication.

Authenticate your Warden/Devise-enabled Rails app using BrowserID from Mozilla

Add this line to your application's Gemfile:

gem 'devise-browserid'

And then execute:

$ bundle

Or install it yourself as:

$ gem install devise-browserid

devise-browserid depends on warden-browserid and is enabled in the Rails asset pipeline.

I use the devise-browserid strategy with warden. [Mozilla] 1 says to use BrowserID as shown. In your Rails config/initializers/devise.rb:

  config.warden do |manager|
    manager.default_strategies(:scope => :user).unshift :browserid
    # manager.browserid_url = "dev.diresworb.org"  # Development (default)
    # manager.browserid_url = "diresworb.org"      # Beta
    # manager.browserid_url = "browserid.org"      # Production
  end

Then you add the javascripts at the bottom of your application layout:

    <%= browserid_include_tag %>

And the login button wherever you want to:

<% sign_in_path = "/sign_in" %>
<%= browserid_login_tag(sign_in_path) %>

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Added some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request