Sinatra应用程序在生产/测试环境中使用session时会失败

Question

我正在尝试在测试和生产中运行我的Ruby Sinatra应用程序。下面是主类:

class Main < Sinatra::Application
  helpers Sinatra::ContentFor
  helpers Sinatra::Partials
  helpers Sinatra::Auth
  use Rack::Session::Cookie, :secret => 'supersecret' , :expire_after => 360000
  set :environment, :production
  configure :development do
    enable :sessions, :logging, :dump_errors, :inline_templates
    enable :methodoverride
    set :root, $_APP_PATH
    set :static, true
    logger = Logger.new($stdout)
  end
  configure :production do
    enable :logging, :dump_errors, :inline_templates
    enable :methodoverride
    set :root, $_APP_PATH
    set :static, true
    logger = Logger.new($stdout)
  end
  get "/2configure" do
    haml :'2configure'
  end
end

这适用于set :environment, :development，但在"test"one_answers"production"中，它给出以下错误:

!! Unexpected error while processing request: undefined method `bytesize' for nil:NilClass

这是堆栈跟踪的顶部:

NoMethodError - undefined method `bytesize' for nil:NilClass:
    /home/id833541/.rvm/gems/ruby-1.9.3-p392/gems/rack-1.3.10/lib/rack/utils.rb:291:in `bytesize'
    /home/id833541/.rvm/gems/ruby-1.9.3-p392/gems/rack-1.3.10/lib/rack/utils.rb:351:in `secure_compare'
    /home/id833541/.rvm/gems/ruby-1.9.3-p392/gems/rack-1.3.10/lib/rack/session/cookie.rb:115:in `unpacked_cookie_data'
    /home/id833541/.rvm/gems/ruby-1.9.3-p392/gems/rack-1.3.10/lib/rack/session/cookie.rb:105:in `extract_session_id'
    /home/id833541/.rvm/gems/ruby-1.9.3-p392/gems/rack-1.3.10/lib/rack/session/abstract/id.rb:43:in `load_session_id!'
    /home/id833541/.rvm/gems/ruby-1.9.3-p392/gems/rack-1.3.10/lib/rack/session/abstract/id.rb:32:in `[]'
    /home/id833541/.rvm/gems/ruby-1.9.3-p392/gems/rack-1.3.10/lib/rack/session/abstract/id.rb:252:in `current_session_id'
    /home/id833541/.rvm/gems/ruby-1.9.3-p392/gems/rack-1.3.10/lib/rack/session/abstract/id.rb:258:in `session_exists?'
    /home/id833541/.rvm/gems/ruby-1.9.3-p392/gems/rack-1.3.10/lib/rack/session/abstract/id.rb:104:in `exists?'
    /home/id833541/.rvm/gems/ruby-1.9.3-p392/gems/rack-1.3.10/lib/rack/session/abstract/id.rb:114:in `load_for_read!'
    /home/id833541/.rvm/gems/ruby-1.9.3-p392/gems/rack-1.3.10/lib/rack/session/abstract/id.rb:59:in `[]'

我几乎可以肯定这与会话有关。出于某种原因，在辛纳屈的表演中，这是一种痛苦。我以前有过这个问题，但后来我用enable :sessions使它工作。现在就连这也行不通了。

我已经确认在访问会话时发生错误。在一个HAML文件中，我有:

%p="Welcome #{session[:full_name]}"

第一次为空。但这会产生错误吗?

它发生在任何请求中，即使在我不尝试访问session对象的请求中，但是没有堆栈跟踪。

我使用的是Thin web服务器

Answer 1

我相信这是因为你也有use Rack::Session::Cookie和enable :sessions。使用其中之一(我不知道为什么不能同时工作，只知道它是其中之一)。

顺便说一下，你试过用https://rubygems.org/gems/encrypted_cookie代替Cookie吗?这样更安全。

---

快速补充:我注意到你继承了Sinatra::Application。如果你想通过继承来创建一个模块化的应用，那么:

require 'sinatra/base'
class Main < Sinatra::Base

如果你想使用它作为一个经典的应用程序，那么只需:

require 'sinatra'
# no `class` statement
get "/blah" do # etc

---

继续注释:

如果你正在使用一个机架文件和机架中间件，那么这就是我如何构建一个应用程序:

root_of_project/
  config.ru        # This is just to start up the app via `rackup`.
  app/             # This will be the `root` setting in Sinatra
    config.rb      # This is where the logic of the Rack app lives.
    main.rb        # This is where your main Sinatra app lives
    models/
    views/
      2configure.haml
    public/

config.ru

require 'rubygems'
require 'bundler'
Bundler.setup(:default) # and anything else you want added in
root = File.expand_path File.dirname(__FILE__)
require File.join( root , "./app/config.rb" )
map "/" do
  run MY_APP_NAMESPACE.app
end

app/config.rb

require_relative "./main.rb" # Sinatra app
module MY_APP_NAMESPACE
  require 'encrypted_cookie'
  # standard cookie settings
  COOKIE_SETTINGS = {
    :path => "/",
    :expire_after => 86400, # In seconds, 1 day
    :secret => ENV["COOKIE_KEY"],  # I load this into the server's environment.
    :httponly => true
  }
  # This gets called in the config.ru. Doing it this way
  # makes it easy to include in specs.
  def self.app
    Rack::Builder.app do
      logger = Logger.new($stdout)

      cookie_settings = COOKIE_SETTINGS
      # more security if in production
      cookie_settings.merge!( :secure => true ) if ENV["RACK_ENV"] == "production"
      # AES encryption of cookies
      use Rack::Session::EncryptedCookie, cookie_settings
      # any other Rack middleware I put here.
      run Main
    end
  end
end # module

app/main.rb

require 'sinatra/base'
module MY_APP_NAMESPACE
  class Main < Sinatra::Base
    helpers Sinatra::ContentFor
    helpers Sinatra::Partials
    helpers Sinatra::Auth
    # no need for this here
    # use Rack::Session::Cookie, :secret => 'supersecret' , :expire_after => 360000
    # no need for this
    # set :environment, :production
    configure :development do
      #enable :sessions,  # no need
      enable :logging, :dump_errors, :inline_templates
      enable :methodoverride
      # Sinatra will work this out
      # set :root, $_APP_PATH
      # set :static, true # no need if you have a public directory
    end
    configure :production do
      enable :dump_errors, :inline_templates
      enable :methodoverride
      # set :root, $_APP_PATH
      # set :static, true  
      # logger = Logger.new($stdout) # no need for this, as far as I remember
      # see http://www.sinatrarb.com/intro#Logging
    end
    get "/2configure" do
      haml :'2configure'
    end
  end

希望这能给你一些尝试的想法

Answer 2

显然问题是在Rack::Session::Cookie某处。现在我可以使用下面的代码:

use Rack::Session::Pool, :secret => 'super secret' , :expire_after => 360000

但是我的应用程序稍后将与当前使用Rack::Session::Cookie的另一个应用程序集成。

我仍然想知道为什么Cookie不工作