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rakeでエラー You have already activated rake xx.x.x, but your Gemfile requires rake xx.x.x.での対処の仕方 備忘録その2

Last updated at Posted at 2016-11-13

#ただ単純にrakeのバージョンをあげるだけで解決する場合がある
下記の様にお決まりに怒られるパターンです。
$ rake routes
rake aborted!
Gem::LoadError: You have already activated rake 11.3.0, but your Gemfile requires rake 11.2.2. Prepending bundle exec to your command may solve this.

システムではrake 11.3.0は、
しかし開発してる側のファイルではrake 11.2.2.
案外単純に解決できるかも。

$ bundle update rake
Fetching gem metadata from https://rubygems.org/..........
Fetching version metadata from https://rubygems.org/..
Fetching dependency metadata from https://rubygems.org/.
Resolving dependencies...
Installing rake 11.3.0 (was 11.2.2)
ここからいくつか何をinstallしているかの一覧が出るが省略。
そして終わりにくると、

Bundle updated!
Gems in the group production were not installed.

rakeコマンドがbin/などを省略できる。

#違う解決方法も記録してますので参考に。
http://qiita.com/ARTS_papa/items/41e2868273dd344cd317

#多数で開発したり、既存のを開発する場合はオススメしない。

今回も自分用に記録しておく。
http://www.papa-programing.jp

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