rails console（`require'：无法加载此类文件）

Question

我有使用rails控制台的问题，发送给我这个错误

/usr/local/lib/ruby/gems/2.1.0/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:247:in `require': cannot load such file -- readline (LoadError)
from /usr/local/lib/ruby/gems/2.1.0/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:247:in `block in require'
from /usr/local/lib/ruby/gems/2.1.0/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:232:in `load_dependency'
from /usr/local/lib/ruby/gems/2.1.0/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:247:in `require'
from /usr/local/lib/ruby/2.1.0/irb/completion.rb:9:in `<top (required)>'
from /usr/local/lib/ruby/gems/2.1.0/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:247:in `require'
from /usr/local/lib/ruby/gems/2.1.0/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:247:in `block in require'
from /usr/local/lib/ruby/gems/2.1.0/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:232:in `load_dependency'
from /usr/local/lib/ruby/gems/2.1.0/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:247:in `require'
from /usr/local/lib/ruby/gems/2.1.0/gems/railties-4.1.8/lib/rails/commands/console.rb:3:in `<top (required)>'
from /usr/local/lib/ruby/gems/2.1.0/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:247:in `require'
from /usr/local/lib/ruby/gems/2.1.0/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:247:in `block in require'
from /usr/local/lib/ruby/gems/2.1.0/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:232:in `load_dependency'
from /usr/local/lib/ruby/gems/2.1.0/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:247:in `require'
from /usr/local/lib/ruby/gems/2.1.0/gems/railties-4.1.8/lib/rails/commands/commands_tasks.rb:128:in `require_command!'
from /usr/local/lib/ruby/gems/2.1.0/gems/railties-4.1.8/lib/rails/commands/commands_tasks.rb:59:in `console'
from /usr/local/lib/ruby/gems/2.1.0/gems/railties-4.1.8/lib/rails/commands/commands_tasks.rb:40:in `run_command!'
from /usr/local/lib/ruby/gems/2.1.0/gems/railties-4.1.8/lib/rails/commands.rb:17:in `<top (required)>'
from /usr/local/lib/ruby/gems/2.1.0/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:247:in `require'
from /usr/local/lib/ruby/gems/2.1.0/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:247:in `block in require'
from /usr/local/lib/ruby/gems/2.1.0/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:232:in `load_dependency'
from /usr/local/lib/ruby/gems/2.1.0/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:247:in `require'
from /home/xploshioon/rails/mini_twitter/bin/rails:8:in `<top (required)>'
from /usr/local/lib/ruby/gems/2.1.0/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:241:in `load'
from /usr/local/lib/ruby/gems/2.1.0/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:241:in `block in load'
from /usr/local/lib/ruby/gems/2.1.0/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:232:in `load_dependency'
from /usr/local/lib/ruby/gems/2.1.0/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:241:in `load'
from /usr/local/lib/ruby/2.1.0/rubygems/core_ext/kernel_require.rb:55:in `require'
from /usr/local/lib/ruby/2.1.0/rubygems/core_ext/kernel_require.rb:55:in `require'

我有其他应用程序的问题，但解决了再次创建应用程序的问题。 但现在我有一些代码，所以我不想再创建它。

有谁知道这里有什么问题？

我有linux mint 17 ruby​​ 2.1.4p265（2014-10-27修订版48166）[i686-linux] Rails 4.1.8

Answer 1

首先将其添加到您的Gemfile：

gem 'rb-readline'

其次是：

bundle install

如果这不能解决问题，请按照下列步骤操作：

安装readline：

sudo apt-get install libreadline-dev

删除并重新安装ruby

rvm remove 2.1.4    
rvm install 2.1.4

最后

bundle install