为什么我无法在我的应用程序中访问 github 上的 gem？

Question

I can't access my gem on github in my app.

In directory of "check" local repository :

1. my@pc:/check$ bundle install / update

2. my@pc:/check$ bundle info exam

   • exam (0.1.0 e21d9f9)
     Summary: Just example
     Homepage: https://github.com/
     Path: /home/.rvm/gems/ruby-2.6.3@check/bundler/gems/exam-e21d9f936578

3. my@pc:/check$ ruby runner.rb

   Traceback (most recent call last):
2: from runner.rb:1:in '<main>'
1: from /usr/share/rvm/rubies/ruby-2.6.3/lib/ruby/site_ruby/2.6.0/rubygems/core_ext/kernel_require.rb:92:in 'require'
/usr/share/rvm/rubies/ruby-2.6.3/lib/ruby/site_ruby/2.6.0/rubygems/core_ext/kernel_require.rb:92:in **'require': cannot load such file -- exam (LoadError)**

4. gem which exam

ERROR: Can't find Ruby library file or shared library exam
During process "bundle install" path has been added to $LOAD_PATH but then when I open $LOAD_PATH over irb , this path is absent there

**gem env**
RubyGems Environment:
  - RUBYGEMS VERSION: 3.1.2
  - RUBY VERSION: 2.6.3 (2019-04-16 patchlevel 62) [x86_64-linux]
  - INSTALLATION DIRECTORY: /home/pc/.rvm/gems/ruby-2.6.3@check
  - USER INSTALLATION DIRECTORY: /home/pc/.gem/ruby/2.6.0
  - RUBY EXECUTABLE: /usr/share/rvm/rubies/ruby-2.6.3/bin/ruby
  - GIT EXECUTABLE: /usr/bin/git
  - EXECUTABLE DIRECTORY: /home/pc/.rvm/gems/ruby-2.6.3@check/bin
  - SPEC CACHE DIRECTORY: /home/pc/.gem/specs
  - SYSTEM CONFIGURATION DIRECTORY: /etc
  - RUBYGEMS PLATFORMS:
    - ruby
    - x86_64-linux
  - GEM PATHS:
     - /home/pc/.rvm/gems/ruby-2.6.3@check
     - /home/pc/.rvm/gems/ruby-2.6.3@global
  - GEM CONFIGURATION:
     - :update_sources => true
     - :verbose => true
     - :backtrace => false
     - :bulk_threshold => 1000
  - REMOTE SOURCES:
     - https://rubygems.org/
  - SHELL PATH:
     - /home/pc/.rvm/gems/ruby-2.6.3@check/bin
     - /home/pc/.rvm/gems/ruby-2.6.3@global/bin
     - /usr/share/rvm/rubies/ruby-2.6.3/bin
     - /usr/share/rvm/bin`

Answer 1

You'll need to activate Bundler so that it can add your exam gem to the load path. You can either execute your code with bundle exec :

$ bundle exec ruby runner.rb
Hola from gem

or add require 'bundler/setup' to runner.rb before 'exam' is loaded:

require 'bundler/setup'
require 'exam'

# Console.new.run
Game.greeting

ruby runner.rb
Hola from gem