git push heroku masterでのエラー(Ruby on Railsチュートリアル)

はじめに

Ruby on Railsチュートリアル実施時に詰まった場所です。

terminal

$ git push heroku master

Herokuにpushする。

terminal

remote:        In Gemfile:
remote:          sqlite3
remote: 
remote:  !
remote:  !     Failed to install gems via Bundler.
remote:  !     Detected sqlite3 gem which is not supported on Heroku:
remote:  !     https://devcenter.heroku.com/articles/sqlite3
remote:  !
remote:  !     Push rejected, failed to compile Ruby app.
remote: 
remote:  !     Push failed
remote: Verifying deploy...
remote: 
remote: !       Push rejected to gentle-escarpment-12983.
remote: 
To https://git.heroku.com/gentle-escarpment-12983.git
 ! [remote rejected] master -> master (pre-receive hook declined)
error: failed to push some refs to 'https://git.heroku.com/gentle-escarpment-12983.git'

エラーをはきます。(ログからsqlite3のgemがうまくいってなさそう・・・)

解決方法

以下にsqlite3を追加。

Gemfile

group :development, :test do
  # Use sqlite3 as the database for Active Record
  gem 'sqlite3'
  # Call 'byebug' anywhere in the code to stop execution and get a debugger console
  gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]
  # Adds support for Capybara system testing and selenium driver
  gem 'capybara', '~> 2.13'
  gem 'selenium-webdriver'
end

以下にpgを追加。

Gemfile

group :production do
  gem 'pg', '0.20.0'
end

これで再度、以下を実施でHerokuへのpushは完了。

terminal

$ bundle install --without production

$ git push heroku master

参考