Rail チュートリアルにてBootstrapが導入できない

Question

Railsに挑戦中です。
Bootstrapを導入しようとして何度やり直してもエラーになってしまうのでお力をお貸しいただければと思います。

環境はドットインストールを真似してVagrantでやっています。

環境
・Mac OS high Sierra
・Rails 5.2.1
・ruby 2.3.1p112 (2016-04-26 revision 54768) [x86_64-linux]
・Vagrant

Sass::SyntaxError in StaticPages#home
Showing /home/vagrant/rails/myapp/app/views/layouts/application.html.erb where line #8 raised:

File to import not found or unreadable: bootstrap.
Load paths:
  /home/vagrant/rails/myapp/app/assets/config
  /home/vagrant/rails/myapp/app/assets/images
  /home/vagrant/rails/myapp/app/assets/javascripts
  /home/vagrant/rails/myapp/app/assets/stylesheets
  /home/vagrant/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/coffee-rails-4.2.2/lib/assets/javascripts
  /home/vagrant/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/actioncable-5.2.1/lib/assets/compiled
  /home/vagrant/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/activestorage-5.2.1/app/assets/javascripts
  /home/vagrant/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/actionview-5.2.1/lib/assets/compiled
  /home/vagrant/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/turbolinks-source-5.2.0/lib/assets/javascripts
  /home/vagrant/rails/myapp/node_modules

Extracted source (around line #17):
@import "bootstrap";

Rails.root: /home/vagrant/rails/myapp

source 'https://rubygems.org'
git_source(:github) { |repo| "https://github.com/#{repo}.git" }

ruby '2.3.1'

# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '~> 5.2.1'
# Use sqlite3 as the database for Active Record
gem 'sqlite3'
# Use Puma as the app server
gem 'puma', '~> 3.11'
# Use SCSS for stylesheets
gem 'sass-rails', '~> 5.0'
# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'
# See https://github.com/rails/execjs#readme for more supported runtimes

gem 'bootstrap', '~> 4.0.0'

# Use jquery as the JavaScript library
gem 'jquery-rails'
# Use CoffeeScript for .coffee assets and views
gem 'coffee-rails', '~> 4.2'
# Turbolinks makes navigating your web application faster. Read more: https://github.com/turbolinks/turbolinks
gem 'turbolinks', '~> 5'
# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
gem 'jbuilder', '~> 2.5'
# Use Redis adapter to run Action Cable in production
# gem 'redis', '~> 4.0'
# Use ActiveModel has_secure_password
# gem 'bcrypt', '~> 3.1.7'

gem 'therubyracer'
gem 'autoprefixer-rails', '8.6.5'

# Use ActiveStorage variant
# gem 'mini_magick', '~> 4.8'

# Use Capistrano for deployment
# gem 'capistrano-rails', group: :development

# Reduces boot times through caching; required in config/boot.rb
gem 'bootsnap', '>= 1.1.0', require: false

group :development, :test do
  # Call 'byebug' anywhere in the code to stop execution and get a debugger console
  gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]
end

group :development do
  # Access an interactive console on exception pages or by calling 'console' anywhere in the code.
  gem 'web-console', '>= 3.3.0'
  gem 'listen', '>= 3.0.5', '< 3.2'
  # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
  gem 'spring'
  gem 'spring-watcher-listen', '~> 2.0.0'
end

group :test do
  # Adds support for Capybara system testing and selenium driver
  gem 'capybara', '>= 2.15'
  gem 'selenium-webdriver'
  # Easy installation and use of chromedriver to run system tests with Chrome
  gem 'chromedriver-helper'
end

# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]

/*
 * This is a manifest file that'll be compiled into application.css, which will include all the files
 * listed below.
 *
 * Any CSS and SCSS file within this directory, lib/assets/stylesheets, or any plugin's
 * vendor/assets/stylesheets directory can be referenced here using a relative path.
 *
 * You're free to add application-wide styles to this file and they'll appear at the bottom of the
 * compiled file so the styles you add here take precedence over styles defined in any other CSS/SCSS
 * files in this directory. Styles in this file should be added after the last require_* statement.
 * It is generally better to create a new file per style scope.
 *
 */


@import "bootstrap";

// This is a manifest file that'll be compiled into application.js, which will include all the files
// listed below.
//
// Any JavaScript/Coffee file within this directory, lib/assets/javascripts, or any plugin's
// vendor/assets/javascripts directory can be referenced here using a relative path.
//
// It's not advisable to add code directly here, but if you do, it'll appear at the bottom of the
// compiled file. JavaScript code in this file should be added after the last require_* statement.
//
// Read Sprockets README (https://github.com/rails/sprockets#sprockets-directives) for details
// about supported directives.
//
//= require jquery3
//= require popper
//= require bootstrap-sprockets
//= require jquery_ujs
//= require turbolinks
//= require_tree .

<!DOCTYPE html>
<html>
  <head>
    <title>Myapp</title>
    <%= csrf_meta_tags %>
    <%= csp_meta_tag %>

    <%= stylesheet_link_tag    'application', media: 'all', 'data-turbolinks-track': 'reload' %>
    <%= javascript_include_tag 'application', 'data-turbolinks-track': 'reload' %>
  </head>

  <body>
    <%= yield %>
  </body>
</html>

色々試してみたのですが、HTMLのこの部分を削除するとかろうじて動く程度のことしかわかりませんでした。

<%= stylesheet_link_tag    'application', media: 'all', 'data-turbolinks-track': 'reload' %>

<%= javascript_include_tag 'application', 'data-turbolinks-track': 'reload' %>

長文ですが、よろしくお願い致します。

Answer 1

bundle installしてなければ実行してください。
もしbundle installしていて出るならサーバ再起動で直ることがあるようです。

Comments

[t_54342134142]

再起動したら直りました！ありがとうございます！