Rails 控制台-Hpricot，Nokogiri 在 Rails 控制台中不可用？

Question

我无法找到以下解决方案：

在安装 gems（例如 hpricot 或 nokogiri）后，我无法在 rails 控制台中访问它们。这些宝石出现在我的宝石列表中，并且似乎与我的其他宝石具有相同的路径。

user@user-laptop:~$ which nokogiri
/home/user/.rvm/gems/ruby-1.9.2-p0/bin/nokogiri
user@user-laptop:~$ which rake
/home/user/.rvm/gems/ruby-1.9.2-p0/bin/rake

在控制台中，对于“标准”宝石，它们可以是必需的，例如：

ruby-1.9.2-p0 > require 'open-uri'
 => ["OpenURI"] 

但是，要求 nokogiri 会返回以下内容：

ruby-1.9.2-p0 > require 'nokogiri'
LoadError: no such file to load -- nokogiri
    from /home/user/.rvm/gems/ruby-1.9.2-p0/gems/activesupport-3.0.0/lib/active_support/dependencies.rb:239:in `require'
    from /home/user/.rvm/gems/ruby-1.9.2-p0/gems/activesupport-3.0.0/lib/active_support/dependencies.rb:239:in `block in require'
    from /home/user/.rvm/gems/ruby-1.9.2-p0/gems/activesupport-3.0.0/lib/active_support/dependencies.rb:225:in `block in load_dependency'
    from /home/user/.rvm/gems/ruby-1.9.2-p0/gems/activesupport-3.0.0/lib/active_support/dependencies.rb:591:in `new_constants_in'
    from /home/user/.rvm/gems/ruby-1.9.2-p0/gems/activesupport-3.0.0/lib/active_support/dependencies.rb:225:in `load_dependency'
    from /home/user/.rvm/gems/ruby-1.9.2-p0/gems/activesupport-3.0.0/lib/active_support/dependencies.rb:239:in `require'
    from (irb):10
    from /home/user/.rvm/gems/ruby-1.9.2-p0/gems/railties-3.0.0/lib/rails/commands/console.rb:44:in `start'
    from /home/user/.rvm/gems/ruby-1.9.2-p0/gems/railties-3.0.0/lib/rails/commands/console.rb:8:in `start'
    from /home/user/.rvm/gems/ruby-1.9.2-p0/gems/railties-3.0.0/lib/rails/commands.rb:23:in `<top (required)>'
    from script/rails:9:in `require'
    from script/rails:9:in `<main>'

无论如何，我真的很感谢对我的新手问题的帮助，我大部分时间都在努力解决这个问题。 :)

Answer 1

您是否已将宝石添加到 Gemfile？它们将在控制台启动时自动加载。