Rails Bootstrap V4 alpha 3 gem 安装失败

Question

我在运行捆绑安装时收到以下错误，我只需要安装 x86-mingw32 还是？真的很感激任何帮助，我只使用 CDN 版本会更好吗？

Could not find gem 'bootstrap (>= 4.0.0.alpha2, ~> 4.0) x86-mingw32
the gem sources listed in your Gemfile or available on this machine

这是我的 Gem 文件

source 'https://rubygems.org'


# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '4.2.5'
# Use sqlite3 as the database for Active Record
gem 'sqlite3'
# Use SCSS for stylesheets
gem 'sass-rails', '~> 5.0'
# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'
# Use CoffeeScript for .coffee assets and views
gem 'coffee-rails', '~> 4.1.1'

#Bootstrap 4 alpha 3 gem for amazing sexiness
gem 'bootstrap', '~> 4.0', '>= 4.0.0.alpha2'

#coffee script for well cofee script stuff 

gem 'coffee-script-source', '1.8.0'
# See https://github.com/rails/execjs#readme for more supported runtimes
 gem 'therubyracer', platforms: :ruby

# Use jquery as the JavaScript library
gem 'jquery-rails'
# Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks
gem 'turbolinks'
# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
gem 'jbuilder', '~> 2.0'
# bundle exec rake doc:rails generates the API under doc/api.
gem 'sdoc', '~> 0.4.0', group: :doc

# Use ActiveModel has_secure_password
# gem 'bcrypt', '~> 3.1.7'

# Use Unicorn as the app server
# gem 'unicorn'

# Use Capistrano for deployment
# gem 'capistrano-rails', group: :development

group :development, :test do
  # Call 'byebug' anywhere in the code to stop execution and get a debugger console
  gem 'byebug'
end

group :development do
  # Access an IRB console on exception pages or by using <%= console %> in views
  gem 'web-console', '~> 2.0'
end

# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]

Answer 1

只是想知道，为什么需要两个 gem 说明符？我按照你的方式得到了同样的错误运行但后来我使用一个说明符重试：

gem 'bootstrap', '>= 4.0.0.alpha2'

它对我有用。

注意：您可以检查此 gem here

的版本

Rails Bootstrap V4 alpha 3 gem 安装失败

Rails Bootstrap V4 alpha 3 gem install fail

ruby

rubygems

ruby-on-rails