css - 如何实现 bootstrap 4 和 rails 5

Question

我是 ruby​​ 的新手，我正在尝试将 bootstrap 4.0.0.alpha4 包含到 rails 5.0.0 中。我已经安装了 gems bootstrap、bootstrap-sass、autoprefixer-rails，我什至在 application.css.sass 中使用了@import“bootstrap”，但我仍然没有在页面上获得 Bootstrap 。我有一个按钮查看我尝试实现 Bootstrap 设计的位置。我什至在不同的元素上尝试过，但都没有用。任何帮助，将不胜感激。谢谢。
代码如下所示。 gem 文件

    source 'https://rubygems.org'


# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '~> 5.0.0'
# Use postgresql as the database for Active Record
gem 'pg', '~> 0.18'
# Use Puma as the app server
gem 'puma', '~> 3.0'

gem 'bootstrap'
gem 'bootstrap-sass'
gem 'autoprefixer-rails'

gem 'wdm'
# 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', '~> 4.2'
# 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 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', '~> 3.0'
# Use ActiveModel has_secure_password
# gem 'bcrypt', '~> 3.1.7'

# 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', platform: :mri
end

group :development do
  # Access an IRB console on exception pages or by using <%= console %> anywhere in the code.
  gem 'web-console'
  gem 'listen', '~> 3.0.5'
  # 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

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

Answer 1

有关将 Bootstrap 包含到 Rails 中的官方引用代码，请参阅 test/dummy_rails官方中的元素骨架bootstrap-rubygem元素。该元素用于集成测试，因此您知道它将与最新版本的 Bootstrap gem 和元素测试矩阵中的任何版本的 Ruby/Rails 一起工作。

确保这些代码行(或等效代码)已添加到您的 Rails 元素中:

• //= 在 app/assets/javascripts/application.js 中需要 bootstrap-sprockets
• @import bootstrap app/assets/stylesheets/application.sass
• config.assets.precompile += %w( application.css application.js ) config/application.rb
• 运行rake assets:precompile

如果您仍然遇到问题，请将完整的源代码发布到您的 Rails 应用程序或足以作为 Minimal, Complete and Verifiable Example 的源代码这会产生您的问题 - 总是有可能您在本地更改了一些您没有考虑过但实际上很重要的内容。