Rails 未找到 gem。 "Could not find .. in any of the sources"

Question

我最近使用 rbenv 在 Rails 上设置了 Ruby。但由于某种原因，我得到： "Could not find shoulda-matchers-3.1.1 in any of the sources" 当我尝试执行 rails generate scaffold 命令时。这是我的 gem 环境：

RubyGems Environment:
  - RUBYGEMS VERSION: 2.6.4
  - RUBY VERSION: 2.3.0 (2015-12-25 patchlevel 0) [x86_64-linux]
  - INSTALLATION DIRECTORY:     /home/username/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0
  - USER INSTALLATION DIRECTORY: /home/username/.gem/ruby/2.3.0
  - RUBY EXECUTABLE: /home/username/.rbenv/versions/2.3.0/bin/ruby
  - EXECUTABLE DIRECTORY: /home/username/.rbenv/versions/2.3.0/bin
  - SPEC CACHE DIRECTORY: /home/username/.gem/specs
  - SYSTEM CONFIGURATION DIRECTORY: /home/username/.rbenv/versions/2.3.0/etc
  - RUBYGEMS PLATFORMS:
    - ruby
    - x86_64-linux
  - GEM PATHS:
     - /home/username/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0
     - /home/username/.gem/ruby/2.3.0
  - GEM CONFIGURATION:
     - :update_sources => true
     - :verbose => true
     - :backtrace => false
     - :bulk_threshold => 1000
     - "gem" => "--no-ri --no-rdoc"
  - REMOTE SOURCES:
 - https://rubygems.org/
  - SHELL PATH:
     - /home/username/.rbenv/versions/2.3.0/bin
     - /home/username/.rbenv/libexec
     - /home/username/.rbenv/plugins/ruby-build/bin
     - /home/username/.rbenv/plugins/ruby-build/bin
     - /home/username/.rbenv/shims
     - /home/username/.rbenv/bin
     - /usr/local/sbin
     - /usr/local/bin
     - /usr/sbin
     - /usr/bin
     - /sbin
     - /bin
     - /usr/games
     - /usr/local/games
     - /home/username/.rvm/bin
     - /home/username/.rvm/bin
     - /home/username/.rvm/bin

当我运行 gem 列表时，它显示：

sass-rails (5.0.4)
sdoc (0.4.1)
shoulda-matchers (3.1.1)
spring (1.7.1)
sprockets (3.6.0)

我试过 gem 安装 shoulda-matchers、bundle install、bundle update、gem install bundler、gem install bundle、gem update --system等。它说我已经有了它，但它仍然不断给我这个错误。请帮忙。 D:

Answer 1

您可能每次都需要在命令前加上 bundle exec 前缀，例如 bundle exec rails g。

如果您厌倦了输入 bundle exec，您可以安装像

这样的 binstub

bundle install --binstubs

有关详细信息，请参阅 https://github.com/rbenv/rbenv/wiki/Plugins#bundler-integration。

Rails 未找到 gem。 "Could not find .. in any of the sources"

Rails not finding gem. "Could not find .. in any of the sources"

ruby

rubygems

ruby-on-rails

bundler

ruby-on-rails-3