ruby-on-rails - 为什么我在使用 Heroku 的现有项目中收到此 bundle 程序错误？

Question

这个错误几乎发生在任何 rake 任务中:

project/Gemfile:4:in `evaluate': undefined method `ruby' for #<Bundler::Dsl:0x007f8274ba6ac8> (NoMethodError)
~/.rvm/gems/ruby-1.9.3-p0-perf/gems/bundler-1.1.4/lib/bundler/dsl.rb:7:in `instance_eval'
~/.rvm/gems/ruby-1.9.3-p0-perf/gems/bundler-1.1.4/lib/bundler/dsl.rb:7:in `evaluate'
~/.rvm/gems/ruby-1.9.3-p0-perf/gems/bundler-1.1.4/lib/bundler/definition.rb:18:in `build'
~/.rvm/gems/ruby-1.9.3-p0-perf/gems/bundler-1.1.4/lib/bundler.rb:135:in `definition'
~/.rvm/gems/ruby-1.9.3-p0-perf/gems/bundler-1.1.4/lib/bundler/cli.rb:220:in `install'
~/.rvm/gems/ruby-1.9.3-p0-perf/gems/bundler-1.1.4/lib/bundler/vendor/thor/task.rb:22:in `run'
.rvm/gems/ruby-1.9.3-p0-perf/gems/bundler-1.1.4/lib/bundler/vendor/thor/invocation.rb:118:in `invoke_task'

Gemfile:4

  ruby '1.9.3'

Answer 1

在 Heroku 上运行多个版本的 ruby​​ 需要此行，但目前需要预发布版本的 bundler 才能在本地工作。

gem install bundler --pre

见 http://blog.heroku.com/archives/2012/5/9/multiple_ruby_version_support_on_heroku/