Ruby on rails 为什么我的gem导致活动记录无法加载？

这是我的珍宝：

这就是我如何将其包含在我的GEM文件中的方式：

gem "deep_cloning", :git => "git://github.com/DerNalia/deep_cloning.git"

以下错误所在的行是：

ActiveRecord::Base.extend(DeepCloning)

链接到源文件：

。。。所以也许我扩展的

ActiveRecord:：Base

错了

% bundle exec script/server -p3001
=> Booting WEBrick
=> Rails 2.3.8 application starting on http://0.0.0.0:3001
/Users/me/.rvm/gems/ruby-1.8.7-p352@myproject/gems/activesupport-2.3.8/lib/active_support/dependencies.rb:443:in `load_missing_constant': uninitialized constant ActiveRecord (NameError)
    from /Users/me/.rvm/gems/ruby-1.8.7-p352@myproject/gems/activesupport-2.3.8/lib/active_support/dependencies.rb:80:in `rake_original_const_missing'
    from /Users/me/.rvm/gems/ruby-1.8.7-p352@myproject/gems/rake-0.8.7/lib/rake.rb:2503:in `const_missing'
    from /Users/me/.rvm/gems/ruby-1.8.7-p352@myproject/gems/activesupport-2.3.8/lib/active_support/dependencies.rb:92:in `const_missing'
    from /Users/me/.rvm/gems/ruby-1.8.7-p352@myproject/bundler/gems/deep_cloning-4d4df89848a4/lib/deep_cloning.rb:102
    from /Users/me/.rvm/gems/ruby-1.8.7-p352@myproject/gems/bundler-1.0.21/lib/bundler/runtime.rb:68:in `require'
    from /Users/me/.rvm/gems/ruby-1.8.7-p352@myproject/gems/bundler-1.0.21/lib/bundler/runtime.rb:68:in `require'
    from /Users/me/.rvm/gems/ruby-1.8.7-p352@myproject/gems/bundler-1.0.21/lib/bundler/runtime.rb:66:in `each'
    from /Users/me/.rvm/gems/ruby-1.8.7-p352@myproject/gems/bundler-1.0.21/lib/bundler/runtime.rb:66:in `require'
    from /Users/me/.rvm/gems/ruby-1.8.7-p352@myproject/gems/bundler-1.0.21/lib/bundler/runtime.rb:55:in `each'
    from /Users/me/.rvm/gems/ruby-1.8.7-p352@myproject/gems/bundler-1.0.21/lib/bundler/runtime.rb:55:in `require'
    from /Users/me/.rvm/gems/ruby-1.8.7-p352@myproject/gems/bundler-1.0.21/lib/bundler.rb:122:in `require'
    from /Users/me/Work/GravityLabs/myproject/config/environment.rb:68
    from /Users/me/.rvm/gems/ruby-1.8.7-p352@myproject/gems/rails-2.3.8/lib/initializer.rb:111:in `run'
    from /Users/me/Work/GravityLabs/myproject/config/environment.rb:16
    from /Users/me/.rvm/gems/ruby-1.8.7-p352@myproject/gems/activesupport-2.3.8/lib/active_support/dependencies.rb:156:in `require'
    from /Users/me/.rvm/gems/ruby-1.8.7-p352@myproject/gems/activesupport-2.3.8/lib/active_support/dependencies.rb:156:in `require'
    from /Users/me/.rvm/gems/ruby-1.8.7-p352@myproject/gems/activesupport-2.3.8/lib/active_support/dependencies.rb:521:in `new_constants_in'
    from /Users/me/.rvm/gems/ruby-1.8.7-p352@myproject/gems/activesupport-2.3.8/lib/active_support/dependencies.rb:156:in `require'
    from /Users/me/Work/GravityLabs/myproject/config.ru:3
    from /Users/me/.rvm/gems/ruby-1.8.7-p352@myproject/gems/rack-1.1.3/lib/rack/builder.rb:46:in `instance_eval'
    from /Users/me/.rvm/gems/ruby-1.8.7-p352@myproject/gems/rack-1.1.3/lib/rack/builder.rb:46:in `initialize'
    from /Users/me/Work/GravityLabs/myproject/config.ru:1:in `new'
    from /Users/me/Work/GravityLabs/myproject/config.ru:1
    from script/server:3:in `eval'
    from /Users/me/.rvm/gems/ruby-1.8.7-p352@myproject/gems/rails-2.3.8/lib/commands/server.rb:78
    from script/server:3:in `require'
    from script/server:3

---

您可能应该在gem中尝试

要求使用“activerecord”

---

关于

扩展

和

包括

：

module M
  def a
    "hello"
  end
end

MyClass1.extend M
MyClass1.a #=> "hello"
MyClass.new.a #=> NoMethodError

MyClass2.send :include, M
MyClass2.a #=> NoMethodError
MyClass2.new.a #=> "hello"

---

您可能应该在gem中尝试

要求使用“activerecord”

---

关于

扩展

和

包括

：

module M
  def a
    "hello"
  end
end

MyClass1.extend M
MyClass1.a #=> "hello"
MyClass.new.a #=> NoMethodError

MyClass2.send :include, M
MyClass2.a #=> NoMethodError
MyClass2.new.a #=> "hello"

---

看起来您正试图在加载活动记录之前引用ActiveRecord:：Base看起来您正试图在加载活动记录之前引用ActiveRecord:：Base问题：我添加了“ActiveRecord”，并且我的任何对象都没有.clone！method=\也许您应该使用

ActiveRecord:：Base.send:include，DeepCloning

extend

和

include

经常出错。如果我包括deepcloning，我不就可以将方法作为类变量而不是实例变量使用吗？目标是能够完成myARObject.clone！（params）=\n我想你的情况正好相反。哦，我看到你添加了示例，我必须尝试一下。但问题是：我添加了require'ActiveRecord'，并且我的所有对象都没有.clone！method=\也许您应该使用

ActiveRecord:：Base.send:include，DeepCloning

extend

和

include

经常出错。如果我包括deepcloning，我不就可以将方法作为类变量而不是实例变量使用吗？目标是能够完成myARObject.clone！（params）=\n我想你的情况正好相反。哦，我看到你添加了示例，我必须尝试一下。