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ruby on railsでpuma.rbが見つからない時

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はじめに

RoRのチュートリアルでherokuのローカルウェブが起動出来ずに困ったのでメモ。

$ heroku local web
[WARN] No ENV file found
1:19:26 PM web.1 |  bundler: failed to load command: puma 
1:19:26 PM web.1 |  Errno::ENOENT: No such file or directory @ rb_sysopen - config/puma.rb

heroku

herokuのページにサンプルがあった。

workers Integer(ENV['WEB_CONCURRENCY'] || 2)
threads_count = Integer(ENV['RAILS_MAX_THREADS'] || 5)
threads threads_count, threads_count

preload_app!

rackup      DefaultRackup
port        ENV['PORT']     || 3000
environment ENV['RACK_ENV'] || 'development'

on_worker_boot do
  # Worker specific setup for Rails 4.1+
  # See: https://devcenter.heroku.com/articles/deploying-rails-applications-with-the-puma-web-server#on-worker-boot
  ActiveRecord::Base.establish_connection
end

これをconfig/puma.rbとして保存すれば起動出来ます。

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