Ruby PUMA 错误：“无法加载应用程序：NameError：未初始化的常量 Service::Resolv”

Question

使用 Windows 10E ruby 2.3.3p222（2016-11-21 修订版 56859）[i386-mingw32] 彪马 v 2.13.4

我是一个巨大的 PUMA 菜鸟，所以请原谅。我知道代码（python、php，只是不知道 rails、ruby）

所以，我正在尝试恢复我的好友倾倒给我的旧项目。我已经为此工作了 12 多个小时，我已经走了很长一段路，但我无法克服这个错误......我担心这个决议会超出我的范围，但我试一试：

当我尝试启动应用程序时，我收到此错误：

C:\inetpub\wwwroot\Plex-Board>sh runserver.sh * SIGUSR2 未实现，基于信号的重启不可用！ * SIGUSR1 未实现，基于信号的重启不可用！ *** SIGHUP 未实施，基于信号的日志重新打开不可用！ 彪马以单一模式启动...

版本 2.13.4 (ruby 2.3.3-p222)，代号：仲夏代码之梦 最小线程：0，最大线程：16 环境：生产 ！无法加载应用程序：NameError：未初始化的常量 Service::Resolv C:/inetpub/wwwroot/Plex-Board/app/models/service.rb:14:in class:Service': 来自 C:/inetpub/wwwroot/Plex-Board/app/ 的未初始化常量 Service::Resolv (NameError)模型/service.rb:1:in' 来自 C:/Ruby23/lib/ruby/gems/2.3.0/gems/railties-4.2.5/lib/rails/engine.rb:472:in 块（2 级）在 eager_load！来自 C:/Ruby23/lib/ruby/gems/2.3.0/gems/railties-4.2.5/lib/rails/engine.rb:471:ineach' 来自 C:/Ruby23/lib/ruby/gems/2.3.0/gems/railties-4.2.5/lib/rails/engine.rb:471:in 块中的 eager_load！来自 C:/Ruby23/lib/ruby/gems/2.3.0/gems/railties-4.2.5/lib/rails/engine.rb:469:ineach' 来自 C:/Ruby23/lib/ruby/gems/2.3.0/gems/railties-4.2.5/lib/rails/engine.rb:469:in eager_load！来自 C:ineager_load！ 来自 C:/Ruby23/lib/ruby/gems/2.3.0/gems/railties-4.2.5/lib/rails/application/finisher.rb:56:in each' 来自 C:/Ruby23/lib/ruby/gems /2.3.0/gems/railties-4.2.5/lib/rails/application/finisher.rb:56:inblock in module:Finisher' 来自 C:/Ruby23/lib/ruby/gems/2.3.0/gems/railties-4.2.5/lib/rails/initializable.rb:30:in instance_exec' 来自 C:/Ruby23/lib/ruby/gems/2.3 .0/gems/railties-4.2.5/lib/rails/initializable.rb:30:inrun' 来自 C:/Ruby23/lib/ruby/gems/2.3.0/gems/railties-4.2.5/lib/rails/initializable.rb:55:in 块中的 run_initializers' 来自 C:/Ruby23/lib/ruby/2.3 .0/tsort.rb:228:inblock in tsort_each' 来自 C:/Ruby23/lib/ruby/2.3.0/tsort.rb:350:in block (2 levels) in each_strongly_connected_component' 来自 C:/Ruby23/lib/ruby/2.3.0/tsort.rb:431:ineach_strongly_connected_component_from ' 来自 C:/Ruby23/lib/ruby/2.3.0/tsort.rb:349:in 块中的 each_strongly_connected_component' 来自 C:/Ruby23/lib/ruby/2.3.0/tsort.rb:347:ineach' 来自 C:/Ruby23/lib/ruby/2.3.0/tsort.rb:347:in call' 来自 C:/Ruby23/lib/ruby/2.3.0/tsort.rb:347:ineach_strongly_connected_component' 来自 C:/Ruby23/lib/ruby/2.3.0/tsort.rb:226:in tsort_each' 来自 C:/Ruby23/lib/ruby/2.3.0/tsort.rb:205:intsort_each' 来自 C:/Ruby23/lib/ruby/gems/2.3.0/gems/railties-4.2.5/lib/rails/initializable.rb:54:in run_initializers' 来自 C:/Ruby23/lib/ruby/gems/2.3 .0/gems/railties-4.2.5/lib/rails/application.rb:352:initialize！ 来自 C:/inetpub/wwwroot/Plex-Board/config/environment.rb:5:in '来自 C:/Ruby23/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:inrequire' 来自 C:/Ruby23/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in 要求'来自 config.ru:3:inblock in ' 来自 C:/Ruby23/lib/ruby/gems/2.3.0/gems/puma-2.13.4/lib/puma/rack/builder.rb:184:in instance_eval' 来自 C:/Ruby23/lib/ruby/gems /2.3.0/gems/puma-2.13.4/lib/puma/rack/builder.rb:184:ininitialize' 来自 config.ru:in 新'来自 config.ru:in' 来自 C:/Ruby23/lib/ruby/gems/2.3.0/gems/puma-2.13.4/lib/puma/rack/builder.rb:170:in eval' 来自 C:/Ruby23/lib/ruby/gems /2.3.0/gems/puma-2.13.4/lib/puma/rack/builder.rb:170:innew_from_string' 来自 C:/Ruby23/lib/ruby/gems/2.3.0/gems/puma-2.13.4/lib/puma/rack/builder.rb:161:in parse_file' 来自 C:/Ruby23/lib/ruby/gems /2.3.0/gems/puma-2.13.4/lib/puma/configuration.rb:129:inload_rackup' 来自 C:/Ruby23/lib/ruby/gems/2.3.0/gems/puma-2.13.4/lib/puma/configuration.rb:96:in app' 来自 C:/Ruby23/lib/ruby/gems/2.3 .0/gems/puma-2.13.4/lib/puma/runner.rb:113:inload_and_bind' 来自 C:/Ruby23/lib/ruby/gems/2.3.0/gems/puma-2.13.4/lib/puma/single.rb:79:in run' 来自 C:/Ruby23/lib/ruby/gems/2.3 .0/gems/puma-2.13.4/lib/puma/cli.rb:215:inrun' 来自 C:/Ruby23/lib/ruby/gems/2.3.0/gems/puma-2.13.4/bin/puma:10:in '来自 C:/Ruby23/bin/puma:22:inload' 来自 C:/Ruby23/bin/puma:22:in `'

有问题的文件 (C:/inetpub/wwwroot/Plex-Board/app/models/service.rb) 中有这一行：

---

类服务

attr_accessor :timeout
strip_attributes only: [:ip, :url, :dns_name], collapse_spaces: true

validates_associated :service_flavor
validates :name, presence: true, uniqueness: true, allow_blank: false
validates :url, presence: true, uniqueness: true, allow_blank: false
validates_inclusion_of :port, in: 1..65535
validates :ip, length: { minimum: 7, maximum: 45 },
    format: { with: Resolv::IPv4::Regex },
    uniqueness: { scope: :port }, allow_blank: true
validates :dns_name, length: { minimum: 2, maximum: 127 },
    uniqueness: { scope: :port }, allow_blank: true
validates :ip, presence: true, if: (:ip_and_dns_name_dont_exist)
validates :dns_name, presence: true, if: (:ip_and_dns_name_dont_exist)

def init
  @timeout ||= 5
  self.online_status ||= false
end

def ip_and_dns_name_dont_exist
    if (ip.blank? || ip.to_s.empty?) && (dns_name.blank? || dns_name.to_s.empty?)
        self.errors.add(:base, 'IP Address or DNS Name must exist')
        true
    else
        false
    end
end

默认平 ping_destination = 连接方法 开始 Timeout.timeout(@timeout) 做 s = TCPSocket.new(ping_destination, self.port) 关闭 self.update(online_status: true, last_seen: Time.now) 返回真 结尾 救援 Errno::ECONNREFUSED self.update(online_status: true, last_seen: Time.now) 返回真 救援超时::错误，Errno::ENETUNREACH，Errno::EHOSTUNREACH，SocketError self.update(online_status: false) 返回假 结尾 结束

定义连接方法 如果！self.dns_name.blank？ self.dns_name 别的 自我.ip 结尾 结尾 结束

---

我可以猜到这段代码的作用，但我不确定如何修复它，或者是否可以修复。

太好了，有什么想法吗？

Answer 1

在 Rails 控制台中尝试，检查此类是否已加载

Resolv::IPv4::Regex。

如果没有，则需要添加

gem 'rubysl-resolv'

在您的 Gemfile 中，然后捆绑安装