更新 Rails 版本后无法运行 rake

Question

我已升级到 rails 2.3.11 和 ruby​​ 1.9.2，因为我的一些 gem 与以前的版本不兼容。现在我无法执行 rake 命令。 rake gems:install 或 rake db:migrate 时出现以下错误。

(in C:/Ruby/New/Facebook)
rake aborted!
can't convert Symbol into Integer
C:/Ruby192/lib/ruby/gems/1.9.1/gems/rails-2.3.11/lib/rails/gem_dependency.rb:53:
in `[]'
C:/Ruby192/lib/ruby/gems/1.9.1/gems/rails-2.3.11/lib/rails/gem_dependency.rb:53:
in `initialize'
C:/Ruby192/lib/ruby/gems/1.9.1/gems/rails-2.3.11/lib/initializer.rb:836:in `new'

C:/Ruby192/lib/ruby/gems/1.9.1/gems/rails-2.3.11/lib/initializer.rb:836:in `gem'

C:/Ruby/New/Facebook/config/environment.rb:22:in `block in <top (required)>'
C:/Ruby192/lib/ruby/gems/1.9.1/gems/rails-2.3.11/lib/initializer.rb:111:in `run'

C:/Ruby/New/Facebook/config/environment.rb:9:in `<top (required)>'
<internal:lib/rubygems/custom_require>:29:in `require'
<internal:lib/rubygems/custom_require>:29:in `require'
C:/Ruby192/lib/ruby/gems/1.9.1/gems/activesupport-2.3.11/lib/active_support/depe
ndencies.rb:182:in `block in require'
C:/Ruby192/lib/ruby/gems/1.9.1/gems/activesupport-2.3.11/lib/active_support/depe
ndencies.rb:547:in `new_constants_in'
C:/Ruby192/lib/ruby/gems/1.9.1/gems/activesupport-2.3.11/lib/active_support/depe
ndencies.rb:182:in `require'
C:/Ruby192/lib/ruby/gems/1.9.1/gems/rails-2.3.11/lib/tasks/misc.rake:4:in `block
 in <top (required)>'
C:/Ruby192/lib/ruby/1.9.1/rake.rb:634:in `call'
C:/Ruby192/lib/ruby/1.9.1/rake.rb:634:in `block in execute'
C:/Ruby192/lib/ruby/1.9.1/rake.rb:629:in `each'
C:/Ruby192/lib/ruby/1.9.1/rake.rb:629:in `execute'
C:/Ruby192/lib/ruby/1.9.1/rake.rb:595:in `block in invoke_with_call_chain'
C:/Ruby192/lib/ruby/1.9.1/monitor.rb:201:in `mon_synchronize'
C:/Ruby192/lib/ruby/1.9.1/rake.rb:588:in `invoke_with_call_chain'
C:/Ruby192/lib/ruby/1.9.1/rake.rb:605:in `block in invoke_prerequisites'
C:/Ruby192/lib/ruby/1.9.1/rake.rb:602:in `each'
C:/Ruby192/lib/ruby/1.9.1/rake.rb:602:in `invoke_prerequisites'
C:/Ruby192/lib/ruby/1.9.1/rake.rb:594:in `block in invoke_with_call_chain'
C:/Ruby192/lib/ruby/1.9.1/monitor.rb:201:in `mon_synchronize'
C:/Ruby192/lib/ruby/1.9.1/rake.rb:588:in `invoke_with_call_chain'
C:/Ruby192/lib/ruby/1.9.1/rake.rb:581:in `invoke'
C:/Ruby192/lib/ruby/1.9.1/rake.rb:2041:in `invoke_task'
C:/Ruby192/lib/ruby/1.9.1/rake.rb:2019:in `block (2 levels) in top_level'
C:/Ruby192/lib/ruby/1.9.1/rake.rb:2019:in `each'
C:/Ruby192/lib/ruby/1.9.1/rake.rb:2019:in `block in top_level'
C:/Ruby192/lib/ruby/1.9.1/rake.rb:2058:in `standard_exception_handling'
C:/Ruby192/lib/ruby/1.9.1/rake.rb:2013:in `top_level'
C:/Ruby192/lib/ruby/1.9.1/rake.rb:1992:in `run'
C:/Ruby192/bin/rake:31:in `<main>'

请帮助我，因为我坚持了几天。

Answer 1

对我来说看起来像是 Rake 版本问题。试试这个...

gem uninstall rake # select all options
gem 'rake', '0.8.7' # Gemfile
bundle install
run you rake command

将这行代码放在根目录下的 .rvmrc 中，以后可以跳过类似这样的小错误。

bundle exec $SHELL

一切顺利，让我们知道你的进展。

Answer 2

您可能需要升级 ruby​​gems-update。

运行 gem -v 以查看您当前的版本号。

运行 gem update --system 来升级 ruby​​gems。 （根据您的设置，您可能需要 sudo）

要恢复到以前的版本，请运行 gem update --system 1.3.7（将 1.3.7 换成以前的版本号）

Answer 3

您应该在启动 rake 之前解决宝石的冲突。如果成功，请尝试运行服务器，这意味着您也可以运行 Rake，它与运行 Rake 之前的 Rake 版本无关，为 Rails 生成有效的 gem 列表。