Force SSL using ssl_requirement in Rails 2 app

ruby-on-rails, ruby-on-rails-2, ssl

Solution

Use a Rack Middleware.

# lib/force_ssl.rb
class ForceSSL
  def initialize(app)
    @app = app
  end

  def call(env)
    if env['HTTPS'] == 'on' || env['HTTP_X_FORWARDED_PROTO'] == 'https'
      @app.call(env)
    else
      req = Rack::Request.new(env)
      [301, { "Location" => req.url.gsub(/^http:/, "https:") }, []]
    end
  end
end

# config/environment.rb
config.middleware.use "ForceSSL"

Problem

I have a Rails application which need to run under SSL. I tried ssl_requirement but seems I have to type in all the actions in every controllers. Is there any method that I can add a before_filter in application controller with ssl_requirement, so that the apps will redirect to https automatically when user request is in http? Thanks all. :)

Original source