Rails应用中的尾随斜线行为

 match \'/:category/\' => \'category#list_articles\'
 match \'/:category/:article.:format\' => \'article#show\'

http://www.example.com/category/
http://www.example.com/category/article.html

http://www.example.com/category

class TrailingSlashes                                                                                                      
  def initialize(app)
    @app = app
  end

  def call(env)
    if match = env[\'REQUEST_PATH\'].match(/(.*)\\/$/)
      response = Rack::Response.new
      response.redirect(match[1])
      response
    else
      @app.call(env)
    end
  end
end