Question

刚开始从Hartl的教程中学习编程。我最近将Ruby更新到2.3.1（使用Rails 4.2.6），我试图运行控制台但是我收到了这个错误：

Carloss-MBP:sample_app carlosgrijalva$ rails console
/Users/carlosgrijalva/.rvm/gems/ruby-2.3.0/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:274:in `require': cannot load such file -- rails/commands (LoadError)
from /Users/carlosgrijalva/.rvm/gems/ruby-2.3.0/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:274:in `block in require'
from /Users/carlosgrijalva/.rvm/gems/ruby-2.3.0/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:240:in `load_dependency'
from /Users/carlosgrijalva/.rvm/gems/ruby-2.3.0/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:274:in `require'
from /Users/carlosgrijalva/workspace/sample_app/bin/rails:9:in `<top (required)>'
from /Users/carlosgrijalva/.rvm/gems/ruby-2.3.0/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:268:in `load'
from /Users/carlosgrijalva/.rvm/gems/ruby-2.3.0/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:268:in `block in load'
from /Users/carlosgrijalva/.rvm/gems/ruby-2.3.0/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:240:in `load_dependency'
from /Users/carlosgrijalva/.rvm/gems/ruby-2.3.0/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:268:in `load'
from /Users/carlosgrijalva/.rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in `require'
from /Users/carlosgrijalva/.rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in `require'
from -e:1:in `<main>'

不完全确定这意味着什么。我注意到它提出了Ruby 2.3.0，我没有正确更新Ruby吗？我应该重新安装宝石吗？

Answer 1

安装新版本的Ruby后，您还需要安装宝石。如果您使用的是bundler，那么只需运行：

# In your folder with `Gemfile` file.
bundle install

Answer 2

关于ruby问题，您需要使用RVM或RBENV更改系统上的ruby版本。

使用RVM：

rvm use ruby-2.3.1 --default

使用RBENV：

rbenv global 2.3.1

然后运行：

bundle install

Rails控制台没有运行？

2 个答案: