RAILS: Bundler无法找到兼容的 "actionpack" 宝石版本

Question

当我尝试运行"bundle"命令时，出现了以下错误：

Fetching source index for http://rubygems.org/ Bundler could not find compatible versions for gem "actionpack": In Gemfile:

sass-rails (= 3.1.5) ruby depends on
  actionpack (~> 3.1.0) ruby

rails (= 3.2.0) ruby depends on
  actionpack (3.2.0)

以下是我的Gemfile：

  source 'http://rubygems.org'

gem 'rails', '3.2.0'

group :development do
  gem 'sqlite3', '1.3.4'
  gem 'rspec-rails', '2.7.0'
  gem 'guard-rspec', '0.5.5'
end

# Gems used only for assets and not required
# in production environments by default.
group :assets do
  gem 'sass-rails',   '3.1.5'
  gem 'coffee-rails', '3.1.1'
  gem 'uglifier', '1.0.3'
end

gem 'jquery-rails', '1.0.18'

group :test do
  # Pretty printed test output
  gem 'turn', '0.8.2', :require => false
  gem 'rspec-rails', '2.7.0'
  gem 'capybara', '1.1.2'
  gem 'rb-fsevent', '0.4.3.1', :require => false
  gem 'growl', '1.0.3'
end

需要帮助，谢谢！

- Anders Lind

Answer 1

3.2.0版本说明需要更新以下gem:

sass-rails ~> 3.2.3
coffee-rails ~> 3.2.1

http://guides.rubyonrails.org/3_2_release_notes.html

- Jef

Answer 2

sass-rails的3.2.3版本将支持Rails 3.2，因此请更改您的Gemfile以读取：

gem 'sass-rails',   '~> 3.2.3'

你可能也想放松其他宝石版本，这样当你升级Rails时它们可以自动升级。Gemfile.lock保存了版本信息，所以只有在有充分理由的情况下才在Gemfile中指定宝石版本。

- iain