前提・実現したいこと
rails new
コマンドを実行した直後、rails g controller
コマンドを実行した際、
エラーが発生してコントローラを作成することができないため、解決したいです。
発生している問題・エラーメッセージ
freeze:~/workspace/instagram $ rails g controller instagrams index /usr/local/rvm/gems/ruby-2.3.0/gems/activerecord-4.2.3/lib/active_record/connection_adapters/connection_specification.rb:177:in `rescue in spec': Specified 'postgresql' for database adapter, but the gem is not loaded. Add `gem 'pg'` to your Gemfile (and ensure its version is at the minimum required by ActiveRecord). (Gem::LoadError) from /usr/local/rvm/gems/ruby-2.3.0/gems/activerecord-4.2.3/lib/active_record/connection_adapters/connection_specification.rb:174:in `spec' from /usr/local/rvm/gems/ruby-2.3.0/gems/activerecord-4.2.3/lib/active_record/connection_handling.rb:50:in `establish_connection' from /usr/local/rvm/gems/ruby-2.3.0/gems/activerecord-4.2.3/lib/active_record/railtie.rb:120:in `block (2 levels) in <class:Railtie>' from /usr/local/rvm/gems/ruby-2.3.0/gems/activesupport-4.2.3/lib/active_support/lazy_load_hooks.rb:38:in `instance_eval' from /usr/local/rvm/gems/ruby-2.3.0/gems/activesupport-4.2.3/lib/active_support/lazy_load_hooks.rb:38:in `execute_hook' from /usr/local/rvm/gems/ruby-2.3.0/gems/activesupport-4.2.3/lib/active_support/lazy_load_hooks.rb:45:in `block in run_load_hooks' from /usr/local/rvm/gems/ruby-2.3.0/gems/activesupport-4.2.3/lib/active_support/lazy_load_hooks.rb:44:in `each' from /usr/local/rvm/gems/ruby-2.3.0/gems/activesupport-4.2.3/lib/active_support/lazy_load_hooks.rb:44:in `run_load_hooks' from /usr/local/rvm/gems/ruby-2.3.0/gems/activerecord-4.2.3/lib/active_record/base.rb:315:in `<module:ActiveRecord>' from /usr/local/rvm/gems/ruby-2.3.0/gems/activerecord-4.2.3/lib/active_record/base.rb:26:in `<top (required)>' from /usr/local/rvm/gems/ruby-2.3.0/gems/activesupport-4.2.3/lib/active_support/dependencies.rb:274:in `require' from /usr/local/rvm/gems/ruby-2.3.0/gems/activesupport-4.2.3/lib/active_support/dependencies.rb:274:in `block in require' from /usr/local/rvm/gems/ruby-2.3.0/gems/activesupport-4.2.3/lib/active_support/dependencies.rb:240:in `load_dependency' from /usr/local/rvm/gems/ruby-2.3.0/gems/activesupport-4.2.3/lib/active_support/dependencies.rb:274:in `require' from /usr/local/rvm/gems/ruby-2.3.0/gems/spring-2.0.2/lib/spring/application.rb:356:in `active_record_configured?' from /usr/local/rvm/gems/ruby-2.3.0/gems/spring-2.0.2/lib/spring/application.rb:273:in `disconnect_database' from /usr/local/rvm/gems/ruby-2.3.0/gems/spring-2.0.2/lib/spring/application.rb:107:in `preload' from /usr/local/rvm/gems/ruby-2.3.0/gems/spring-2.0.2/lib/spring/application.rb:153:in `serve' from /usr/local/rvm/gems/ruby-2.3.0/gems/spring-2.0.2/lib/spring/application.rb:141:in `block in run' from /usr/local/rvm/gems/ruby-2.3.0/gems/spring-2.0.2/lib/spring/application.rb:135:in `loop' from /usr/local/rvm/gems/ruby-2.3.0/gems/spring-2.0.2/lib/spring/application.rb:135:in `run' from /usr/local/rvm/gems/ruby-2.3.0/gems/spring-2.0.2/lib/spring/application/boot.rb:19:in `<top (required)>' from /usr/local/rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in `require' from /usr/local/rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in `require' from -e:1:in `<main>'
試したこと
エラーメッセージだけ読むと、gemfileの記述に問題があるのかと思いましたが、
rails new
コマンドを実行した直後に、rails g
コマンドを実行していますので、
どこに原因があるのか、特定できませんでした。
補足情報
念のため、gemファイルの中身も記述しておきます。
source 'https://rubygems.org' # Bundle edge Rails instead: gem 'rails', github: 'rails/rails' gem 'rails', '4.2.3' # Use postgresql as the database for Active Record gem 'pg' # Use SCSS for stylesheets gem 'sass-rails', '~> 5.0' # Use Uglifier as compressor for JavaScript assets gem 'uglifier', '>= 1.3.0' # Use CoffeeScript for .coffee assets and views gem 'coffee-rails', '~> 4.1.0' # See https://github.com/rails/execjs#readme for more supported runtimes # gem 'therubyracer', platforms: :ruby # Use jquery as the JavaScript library gem 'jquery-rails' # Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks gem 'turbolinks' # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder gem 'jbuilder', '~> 2.0' # bundle exec rake doc:rails generates the API under doc/api. gem 'sdoc', '~> 0.4.0', group: :doc # Use ActiveModel has_secure_password # gem 'bcrypt', '~> 3.1.7' # Use Unicorn as the app server # gem 'unicorn' # Use Capistrano for deployment # gem 'capistrano-rails', group: :development group :development, :test do # Call 'byebug' anywhere in the code to stop execution and get a debugger console gem 'byebug' # Access an IRB console on exception pages or by using <%= console %> in views gem 'web-console', '~> 2.0' # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring gem 'spring' end
初歩的な質問ですが、ご教示いただけると助かりますm(__)m
回答2件
あなたの回答
tips
プレビュー