undefined method `load_defaults' てなった
railstutorialを始めようとして"rails s " した時に死んだメモ
undefined method `load_defaults' てなった
実行時エラーは下記。
```
fumihumi:toy_app (master)$ rails sfumihumi:toy_app (master)$ rails s
/Users/fumihumi/.rbenv/versions/2.3.4/lib/ruby/gems/2.3.0/gems/railties-5.0.3/lib/rails/railtie/configuration.rb:95:in `method_missing': undefined method `load_defaults' for #<Rails::Application::Configuration:0x007f96482e2f80> (NoMethodError) from /Users/fumihumi/project/toy_app/config/application.rb:12:in `<class:Application>' from /Users/fumihumi/project/toy_app/config/application.rb:10:in `<module:ToyApp>' from /Users/fumihumi/project/toy_app/config/application.rb:9:in `<top (required)>' from /Users/fumihumi/.rbenv/versions/2.3.4/lib/ruby/gems/2.3.0/gems/railties-5.0.3/lib/rails/commands/commands_tasks.rb:88:in `require' from /Users/fumihumi/.rbenv/versions/2.3.4/lib/ruby/gems/2.3.0/gems/railties-5.0.3/lib/rails/commands/commands_tasks.rb:88:in `block in server' from /Users/fumihumi/.rbenv/versions/2.3.4/lib/ruby/gems/2.3.0/gems/railties-5.0.3/lib/rails/commands/commands_tasks.rb:85:in `tap' from /Users/fumihumi/.rbenv/versions/2.3.4/lib/ruby/gems/2.3.0/gems/railties-5.0.3/lib/rails/commands/commands_tasks.rb:85:in `server' from /Users/fumihumi/.rbenv/versions/2.3.4/lib/ruby/gems/2.3.0/gems/railties-5.0.3/lib/rails/commands/commands_tasks.rb:49:in `run_command!' from /Users/fumihumi/.rbenv/versions/2.3.4/lib/ruby/gems/2.3.0/gems/railties-5.0.3/lib/rails/commands.rb:18:in `<top (required)>' from /Users/fumihumi/project/toy_app/bin/rails:9:in `require' from /Users/fumihumi/project/toy_app/bin/rails:9:in `<top (required)>' from /Users/fumihumi/.rbenv/versions/2.3.4/lib/ruby/gems/2.3.0/gems/spring-2.0.2/lib/spring/client/rails.rb:28:in `load' from /Users/fumihumi/.rbenv/versions/2.3.4/lib/ruby/gems/2.3.0/gems/spring-2.0.2/lib/spring/client/rails.rb:28:in `call' from /Users/fumihumi/.rbenv/versions/2.3.4/lib/ruby/gems/2.3.0/gems/spring-2.0.2/lib/spring/client/command.rb:7:in `call' from /Users/fumihumi/.rbenv/versions/2.3.4/lib/ruby/gems/2.3.0/gems/spring-2.0.2/lib/spring/client.rb:30:in `run' from /Users/fumihumi/.rbenv/versions/2.3.4/lib/ruby/gems/2.3.0/gems/spring-2.0.2/bin/spring:49:in `<top (required)>' from /Users/fumihumi/.rbenv/versions/2.3.4/lib/ruby/gems/2.3.0/gems/spring-2.0.2/lib/spring/binstub.rb:31:in `load' from /Users/fumihumi/.rbenv/versions/2.3.4/lib/ruby/gems/2.3.0/gems/spring-2.0.2/lib/spring/binstub.rb:31:in `<top (required)>' from /Users/fumihumi/.rbenv/versions/2.3.4/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:68:in `require' from /Users/fumihumi/.rbenv/versions/2.3.4/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:68:in `require' from /Users/fumihumi/project/toy_app/bin/spring:15:in `<top (required)>' from bin/rails:3:in `load' from bin/rails:3:in `<main>'
```
load defaultsがない。。。。
ただここまでで実行したのは
1. rails new
2. rbenv local 2.3.4
3. bundle install
をしただけで"load defaults"なんていじっていない。。
では"rake"コマンドができるのかどうか確認したところ
```
rake aborted!
NoMethodError: undefined method `load_defaults' for #<Rails::Application::Configuration:0x007f7fc86dfd68>
/Users/fumihumi/project/toy_app/config/application.rb:12:in `<class:Application>'
/Users/fumihumi/project/toy_app/config/application.rb:10:in `<module:ToyApp>'
/Users/fumihumi/project/toy_app/config/application.rb:9:in `<top (required)>'
/Users/fumihumi/project/toy_app/Rakefile:4:in `require_relative'
/Users/fumihumi/project/toy_app/Rakefile:4:in `<top (required)>'
(See full trace by running task with --trace)
```
rake aborted.......
これもできない。。。。
> NoMethodError: undefined method `load_defaults' for #
全く同じですね。。。
結論
config/application.rbの中の
> config.load_defaults 5.1
こいつが悪いみたい。
なのでこれをコメントアウトしてやる
> #config.load_defaults 5.1
```
fumihumi:toy_app (master *)$ rake
Run options: --seed 63099
# Running:
```
はい治った。
という訳で
config.load_defaults 5.1
ですがこれはrails 5.1系からできたものみたいで、、、
rails 5.0.3系を使っていた自分はこのエラーになったようです。