有关ruby on rails上的折射gem的初始化错误。

Question

我的refraction.rb文件在初始化器中

Refraction.configure do |request|
  if request.host !~ /^www./
    request.permanent! host: "www.#{request.host}" 
  end
end

配置下的我的Environment.rb文件

# Load the rails application.
Rails::Initializer.run do |config|
  config.middleware.insert_before(::Rack::Lock, ::Refraction, {})
end

require File.expand_path('../application', __FILE__)

# Initialize the rails application.

我的错误

uninitialized constant Rails (NameError)
  /var/www/vhosts/wiyo.hk/httpdocs/config/environment.rb:2:in `<top (required)>'
  config.ru:3:in `require'
  config.ru:3:in `block in <main>'
  /usr/local/lib/ruby/gems/2.0.0/gems/rack-1.5.2/lib/rack/builder.rb:55:in `instance_eval'
  /usr/local/lib/ruby/gems/2.0.0/gems/rack-1.5.2/lib/rack/builder.rb:55:in `initialize'
  config.ru:1:in `new'
  config.ru:1:in `<main>'
  /usr/local/lib/ruby/gems/2.0.0/gems/passenger-4.0.25/helper-scripts/rack-preloader.rb:105:in `eval'
  /usr/local/lib/ruby/gems/2.0.0/gems/passenger-4.0.25/helper-scripts/rack-preloader.rb:105:in `preload_app'
  /usr/local/lib/ruby/gems/2.0.0/gems/passenger-4.0.25/helper-scripts/rack-preloader.rb:150:in `<module:App>'
  /usr/local/lib/ruby/gems/2.0.0/gems/passenger-4.0.25/helper-scripts/rack-preloader.rb:29:in `<module:PhusionPassenger>'
  /usr/local/lib/ruby/gems/2.0.0/gems/passenger-4.0.25/helper-scripts/rack-preloader.rb:28:in `<main>'

我只是想在实际的网站加载之前做一些重定向的事情。我在上一个问题上了解了折射宝石。我被卡住了。请帮帮我。

Answer 1

如果你想这样解决，你需要首先要求应用程序，然后运行初始化器。

但在这种情况下，解决方案可能是将这一行放入application.rb中，因为时间流逝，Rack::Lock被删除。请改用Rack::Runtime。

config.middleware.insert_before(::Rack::Runtime, ::Refraction)