ruby - 使用 rake 数据库 :migrate in git hook - undefined class/module Encoding

Question

我正在使用 https://github.com/thuss/standalone-migrations在 cakephp 环境中执行数据库迁移。我最终尝试在使用 check out 后 git 钩子(Hook) check out 不同版本的代码后自动执行数据库迁移。

在 cli bundle exec rake db:migrate 上正常运行工作正常，rake db:migrate 或任何其他命令也是如此。如果我将命令放在 .git/hooks/post-checkout 中，它会发出一个错误，提示 undefined class/module Encoding

git hook 命令是 bundle exec rake db:migrate --trace。

平台:Mac OS X Lion 10.7.5

这是整个错误:

rake aborted!undefined class/module Encoding/Users/andy/.rvm/gems/ruby-1.9.3-p194/gems/json-1.7.5/lib/json/ext/parser.bundle/Users/andy/.rvm/gems/ruby-1.9.3-p194/gems/json-1.7.5/lib/json/ext.rb:13/Users/andy/.rvm/gems/ruby-1.9.3-p194/gems/json-1.7.5/lib/json.rb:58:in `require'/Users/andy/.rvm/gems/ruby-1.9.3-p194/gems/json-1.7.5/lib/json.rb:58/Users/andy/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.2.8/lib/active_support/core_ext/object/to_json.rb:3:in `require'/Users/andy/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.2.8/lib/active_support/core_ext/object/to_json.rb:3/Users/andy/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.2.8/lib/active_support/core_ext/object.rb:10:in `require'/Users/andy/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.2.8/lib/active_support/core_ext/object.rb:10/Users/andy/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.2.8/lib/active_support/core_ext.rb:2:in `require'/Users/andy/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.2.8/lib/active_support/core_ext.rb:2/Users/andy/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.2.8/lib/active_support/core_ext.rb:1:in `each'/Users/andy/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.2.8/lib/active_support/core_ext.rb:1/Users/andy/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.2.8/lib/active_support/all.rb:3:in `require'/Users/andy/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.2.8/lib/active_support/all.rb:3/Users/andy/.rvm/gems/ruby-1.9.3-p194/gems/standalone_migrations-2.0.1/lib/standalone_migrations/configurator.rb:1:in `require'/Users/andy/.rvm/gems/ruby-1.9.3-p194/gems/standalone_migrations-2.0.1/lib/standalone_migrations/configurator.rb:1/Users/andy/.rvm/gems/ruby-1.9.3-p194/gems/standalone_migrations-2.0.1/lib/standalone_migrations.rb:8:in `require'/Users/andy/.rvm/gems/ruby-1.9.3-p194/gems/standalone_migrations-2.0.1/lib/standalone_migrations.rb:8/Users/andy/.rvm/gems/ruby-1.9.3-p194/gems/standalone_migrations-2.0.1/lib/tasks/standalone_migrations.rb:9:in `require'/Users/andy/.rvm/gems/ruby-1.9.3-p194/gems/standalone_migrations-2.0.1/lib/tasks/standalone_migrations.rb:9/Users/andy/source/idio/cake/Rakefile:6:in `require'/Users/andy/source/idio/cake/Rakefile:6/Users/andy/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/rake_module.rb:25:in `load'/Users/andy/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/rake_module.rb:25:in `load_rakefile'/Users/andy/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/application.rb:501:in `raw_load_rakefile'/Users/andy/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/application.rb:82:in `load_rakefile'/Users/andy/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'/Users/andy/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/application.rb:81:in `load_rakefile'/Users/andy/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/application.rb:65:in `run'/Users/andy/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'/Users/andy/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/application.rb:63:in `run'/usr/bin/rake:31

我不太喜欢 ruby 。我尝试了各种技巧，删除了所有 gem，重新安装等。总是一样。

谢谢。

Answer 1

事实证明，这是 git 将/usr/bin 重新附加到钩子(Hook)中的 $PATH 的问题。这会导致调用 ruby​​ 的操作系统版本(位于/usr/bin 中)而不是我的 rvm 版本。操作系统版本是 1.8.7，没有正确的 gem 等。我使用的是 1.9.3。

要修复，您需要在 Hook 中获取 rvm 设置脚本。像这样的东西:

#!/usr/bin/env bash
[[ -s "$HOME/.rvm/scripts/rvm" ]] && source "$HOME/.rvm/scripts/rvm"

# ...rest of the post commit commands