Rails railties gem错误“undefined method: 'less'”

Question

Rails railties gem错误“undefined method: 'less'”

ruby-on-railsruby-on-rails-3twitter-bootstrap

12

我刚刚用 gem update 和 bundle update 更新了我的 Rails 应用程序的 gem。当我尝试使用 rails s 进行测试时，它会给我这个错误：

/Users/Richard/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/railtie/configuration.rb:85:inmethod_missing': undefined method less' for #<Rails::Application::Configuration:0x0000010308a300> (NoMethodError)

剩下的错误信息如下所示：

from /Users/Richard/.rvm/gems/ruby-1.9.2-p318/gems/twitter-bootstrap-rails-2.1.6/lib/twitter/bootstrap/rails/engine.rb:15:in `block in <class:Engine>'
    from /Users/Richard/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/initializable.rb:30:in `instance_exec'
    from /Users/Richard/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/initializable.rb:30:in `run'
    from /Users/Richard/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/initializable.rb:55:in `block in run_initializers'
    from /Users/Richard/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/initializable.rb:54:in `each'
    from /Users/Richard/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/initializable.rb:54:in `run_initializers'
    from /Users/Richard/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/application.rb:136:in `initialize!'
    from /Users/Richard/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/railtie/configurable.rb:30:in `method_missing'
    from /Users/Richard/Code/Rails/rgsimms/config/environment.rb:5:in `<top (required)>'
    from /Users/Richard/Code/Rails/rgsimms/config.ru:4:in `require'
    from /Users/Richard/Code/Rails/rgsimms/config.ru:4:in `block in <main>'
    from /Users/Richard/.rvm/gems/ruby-1.9.2-p318/gems/rack-1.4.1/lib/rack/builder.rb:51:in `instance_eval'
    from /Users/Richard/.rvm/gems/ruby-1.9.2-p318/gems/rack-1.4.1/lib/rack/builder.rb:51:in `initialize'
    from /Users/Richard/Code/Rails/rgsimms/config.ru:1:in `new'
    from /Users/Richard/Code/Rails/rgsimms/config.ru:1:in `<main>'
    from /Users/Richard/.rvm/gems/ruby-1.9.2-p318/gems/rack-1.4.1/lib/rack/builder.rb:40:in `eval'
    from /Users/Richard/.rvm/gems/ruby-1.9.2-p318/gems/rack-1.4.1/lib/rack/builder.rb:40:in `parse_file'
    from /Users/Richard/.rvm/gems/ruby-1.9.2-p318/gems/rack-1.4.1/lib/rack/server.rb:200:in `app'
    from /Users/Richard/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/commands/server.rb:46:in `app'
    from /Users/Richard/.rvm/gems/ruby-1.9.2-p318/gems/rack-1.4.1/lib/rack/server.rb:301:in `wrapped_app'
    from /Users/Richard/.rvm/gems/ruby-1.9.2-p318/gems/rack-1.4.1/lib/rack/server.rb:252:in `start'
    from /Users/Richard/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/commands/server.rb:70:in `start'
    from /Users/Richard/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/commands.rb:55:in `block in <top (required)>'
    from /Users/Richard/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/commands.rb:50:in `tap'
    from /Users/Richard/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/commands.rb:50:in `<top (required)>'
    from script/rails:6:in `require'
    from script/rails:6:in `<main>'

这是Twitter Bootstrap gem出错了吗？我还在学习，怎么修复它呢？非常感谢任何帮助。

- Tamachan87

1个回答

网页内容由stack overflow 提供, 点击上面的

可以查看英文原文，
原文链接

- Brad Werth · Accepted Answer

Twitter Bootstrap gem 依赖于 less gem。来自文档：

gem "therubyracer"
gem "less-rails" #Sprockets (what Rails 3.1 uses for its asset pipeline) supports LESS
gem "twitter-bootstrap-rails"

我个人发现将文件从官网直接转储到供应商/资产目录中更容易使用Twitter Bootstrap。通过Gem更新比手动更新略微容易，但是当更新Bootstrap时，您想要“手动”完成并且“逐个检查”所有内容-我更喜欢额外的努力，以确保它不轻易被完成。而且，很难从gem中删除某些(例如)响应部分，而不（就我所知）“取消指定”样式。响应式的东西在大小方面也会随版本变化而发生变化，因此您不能仅依赖于其全部正常工作。我真的看不出使用gem的任何优势。

更新

现在有一个官方的Gem，我建议检查一下：https://github.com/twbs/bootstrap-sass