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rails g model実行時に反応しない場合 ※ドットインストールのRails入門#5をAWS Cloud9から実行時

Last updated at Posted at 2020-10-04

ドットインストールのRails入門#5は、ローカル環境でやる手順になっている。
https://dotinstall.com/lessons/basic_rails_v3/41805

しかし、ローカル環境構築に失敗したので、AWS cloud9で実行したところ、** rails g model **の段階でエラーが発生したので対処法を書きます。

環境

Windows10
AWS Cloud9

事象

ドットインストールの手順通りコマンドを打ったが数分待っても実行されず
  

teminallog
ec2-user:~/environment/myblog $ rails g model Post title:string body:text

 
Ctrl+Cでキャンセルするとこのようなログがでた
  

teminallog
ec2-user:~/environment/myblog $ rails g model Post title:string body:text
^CTraceback (most recent call last):
        15: from bin/rails:3:in `<main>'
        14: from bin/rails:3:in `load'
        13: from /home/ec2-user/environment/myblog/bin/spring:15:in `<top (required)>'
        12: from /home/ec2-user/environment/myblog/bin/spring:15:in `require'
        11: from /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/spring-2.1.1/lib/spring/binstub.rb:11:in `<top (required)>'
        10: from /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/spring-2.1.1/lib/spring/binstub.rb:11:in `load'
         9: from /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/spring-2.1.1/bin/spring:49:in `<top (required)>'
         8: from /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/spring-2.1.1/lib/spring/client.rb:30:in `run'
         7: from /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/spring-2.1.1/lib/spring/client/command.rb:7:in `call'
         6: from /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/spring-2.1.1/lib/spring/client/rails.rb:24:in `call'
         5: from /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/spring-2.1.1/lib/spring/client/command.rb:7:in `call'
         4: from /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/spring-2.1.1/lib/spring/client/run.rb:35:in `call'
         3: from /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/spring-2.1.1/lib/spring/client/run.rb:42:in `warm_run'
         2: from /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/spring-2.1.1/lib/spring/client/run.rb:62:in `run'
         1: from /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/spring-2.1.1/lib/spring/client/run.rb:117:in `verify_server_version'
/home/ec2-user/.rvm/gems/ruby-2.6.3/gems/spring-2.1.1/lib/spring/client/run.rb:117:in `gets': Interrupt

 
いろいろ調べるとspringというGemfileの中に書いているパッケージが邪魔をすることがあるらしい。
そこでspring stopというコマンドでバックグランド処理しているspringを止めてみました

teminallog
ec2-user:~/environment/myblog $ spring stop
Spring stopped.

その後、** rails g model **を実行すると想定通りの結果が返ってきましたね!

teminallog
ec2-user:~/environment/myblog $ rails g model Post title:string body:text
Running via Spring preloader in process 12505
      invoke  active_record
      create    db/migrate/20201004132353_create_posts.rb
      create    app/models/post.rb
      invoke    test_unit
      create      test/models/post_test.rb
      create      test/fixtures/posts.yml
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