部署到 Heroku 时的 Railties 兼容性问题

Question

我尝试将 sass-rails 放在帖子 Bundler gem compatibility issues when deploying to heroku. 中建议的 rails 之前，但没有成功。

Heroku 错误消息

Bundler could not find compatible versions for gem "railties":
In Gemfile:
rails (= 4.0.0) ruby depends on
railties (= 4.0.0) ruby

sass-rails (= 4.0.0) ruby depends on
railties (4.0.1.rc1)

Failed to install gems via Bundler.

宝石文件

source 'https://rubygems.org'
ruby '2.0.0'

gem 'sass-rails', '4.0.0'
gem 'rails', '4.0.0'
gem 'pg', '0.15.1'
gem 'bcrypt-ruby', '3.0.1'

group :development, :test do
  gem 'rspec-rails', '2.13.1'
end

group :test do
  gem 'selenium-webdriver', '2.35.1'
  gem 'capybara', '2.1.0'
  gem 'factory_girl_rails', '4.2.1'
end

gem 'uglifier', '2.1.1'
gem 'coffee-rails', '4.0.0'
gem 'jquery-rails', '3.0.4'
gem 'turbolinks', '1.1.1'
gem 'jbuilder', '1.0.2'

group :doc do
  gem 'sdoc', '0.3.20', require: false
end

group :production do
  gem 'rails_12factor', '0.0.2'
end

Answer 1

将 sass 条目更改为：

gem 'sass-rails', '~> 4.0.0'

然后运行包更新、提交和重新部署