rails g controllerが動きません

Question

コマンドで

$ rails g controller linebot

と打った際、以下のようなエラー文が出てしまいます。

/Users/shopuroguramingu/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.4.6/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require': dlopen(/Users/shopuroguramingu/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/mysql2-0.5.3/lib/mysql2/mysql2.bundle, 9): Library not loaded: /usr/local/opt/openssl/lib/libssl.1.0.0.dylib
  Referenced from: /Users/shopuroguramingu/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/mysql2-0.5.3/lib/mysql2/mysql2.bundle
  Reason: image not found - /Users/shopuroguramingu/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/mysql2-0.5.3/lib/mysql2/mysql2.bundle (LoadError)
        from /Users/shopuroguramingu/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.4.6/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
        from /Users/shopuroguramingu/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.4.6/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
        from /Users/shopuroguramingu/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.4.6/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
        from /Users/shopuroguramingu/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.4.6/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
        from /Users/shopuroguramingu/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/activesupport-5.2.4.2/lib/active_support/dependencies.rb:291:in `block in require'
        from /Users/shopuroguramingu/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/activesupport-5.2.4.2/lib/active_support/dependencies.rb:257:in `load_dependency'
        from /Users/shopuroguramingu/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/activesupport-5.2.4.2/lib/active_support/dependencies.rb:291:in `require'
        from /Users/shopuroguramingu/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/mysql2-0.5.3/lib/mysql2.rb:36:in `<top (required)>'
        from /Users/shopuroguramingu/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.4.6/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'
        from /Users/shopuroguramingu/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.4.6/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
        from /Users/shopuroguramingu/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.4.6/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
        from /Users/shopuroguramingu/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.4.6/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
        from /Users/shopuroguramingu/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.4.6/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
        from /Users/shopuroguramingu/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bundler-2.1.4/lib/bundler/runtime.rb:74:in `block (2 levels) in require'
        from /Users/shopuroguramingu/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bundler-2.1.4/lib/bundler/runtime.rb:69:in `each'
        from /Users/shopuroguramingu/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bundler-2.1.4/lib/bundler/runtime.rb:69:in `block in require'
        from /Users/shopuroguramingu/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bundler-2.1.4/lib/bundler/runtime.rb:58:in `each'
        from /Users/shopuroguramingu/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bundler-2.1.4/lib/bundler/runtime.rb:58:in `require'
        from /Users/shopuroguramingu/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bundler-2.1.4/lib/bundler.rb:174:in `require'
        from /Users/shopuroguramingu/anket2/config/application.rb:7:in `<top (required)>'
        from /Users/shopuroguramingu/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/spring-2.1.0/lib/spring/application.rb:92:in `require'
        from /Users/shopuroguramingu/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/spring-2.1.0/lib/spring/application.rb:92:in `preload'
        from /Users/shopuroguramingu/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/spring-2.1.0/lib/spring/application.rb:157:in `serve'
        from /Users/shopuroguramingu/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/spring-2.1.0/lib/spring/application.rb:145:in `block in run'
        from /Users/shopuroguramingu/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/spring-2.1.0/lib/spring/application.rb:139:in `loop'
        from /Users/shopuroguramingu/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/spring-2.1.0/lib/spring/application.rb:139:in `run'
        from /Users/shopuroguramingu/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/spring-2.1.0/lib/spring/application/boot.rb:19:in `<top (required)>'
        from /Users/shopuroguramingu/.rbenv/versions/2.5.1/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require'
        from /Users/shopuroguramingu/.rbenv/versions/2.5.1/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require'
        from -e:1:in `<main>'

試したこと

・bundle installをしてからrails g controller linebotを打った。
・spring stopをしてからrails g controller linebotを打った。
・gem updateをしてからrails g controller linebotを打った。

いずれも、うまくrails g controller linebotが動きません。

どのようにエラー文を解釈すれば良いかもよくわかりません。
回答よろしくお願いします。

Answer 1

rails g controller コントローラー名

ですね。
コントラーラ名_controller.rb が作られます

Comments

[joruju1988]

すみません、質問の記載ミスでした！修正いたしました！よろしくお願いします

[winterboum]

require': dlopen(/Users/shopuroguramingu/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/mysql2-0.5.3/lib/mysql2/mysql2.bundle, 9): Library not loaded: /usr/local/opt/openssl/lib/libssl.1.0.0.dylib
Referenced from: /Users/shopuroguramingu/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/mysql2-0.5.3/lib/mysql2/mysql2.bundle
Reason: image not found - /Users/shopuroguramingu/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/mysql2-0.5.3/lib/mysql2/mysql2.bundle
とありますから、mysql2のbundleの確認をしてみてください

Answer 2

原因は、以前にmySQLをインストールした時と現在のファイルのバージョンが違ったので、今回インストールしたmySQLが以前のバージョンのファイル達を参照した時に齟齬が出てエラーが発生するというものでした。

$ sudo rm -rf /usr/local/mysql
$ sudo rm -rf /Library/StartupItems/MYSQL
$ sudo rm -rf /Library/PreferencePanes/MySQL.prefPane
$ sudo rm -rf /Library/Receipts/mysql-.pkg
$ sudo rm -rf /usr/local/Cellar/mysql*
$ sudo rm -rf /usr/local/bin/mysql*
$ sudo rm -rf /usr/local/var/mysql*
$ sudo rm -rf /usr/local/etc/my.cnf
$ sudo rm -rf /usr/local/share/mysql*
$ sudo rm -rf /usr/local/opt/mysql*

で、関連ファイルを削除して、さらに

$ bundle config --global build.mysql2 --with-opt-dir="$(brew --prefix openssl)"

とすることで、bundlerを使ってmysql2を入れる際、以下のような場所にあるライブラリを使ってくれるようになる。

$ brew --prefix openssl
=> /usr/local/opt/openssl@1.1

今回もそうだったのですが、
MacOSをアップグレードした後、mysql2のインストールで問題が発生することがあるようです。

参考記事
https://qiita.com/usagrammer/items/7a6b9b9e67f301b5e58a

https://github.com/brianmario/mysql2/issues/1005