我无法在我的 Rails 应用程序中创建 manifest.json

如何解决我无法在我的 Rails 应用程序中创建 manifest.json

我正在尝试从 TheOdinProject 启动一个示例 Rails 应用程序。它只创建一个应用程序，为汽车创建一个表，然后迁移它。在本地主机中运行应用程序时，它显示 Webpacker::Manifest::MissingEntryError。 看起来在启动应用程序时没有创建 manifest.json。我尝试了互联网上的不同解决方案，包括从头开始删除和重新安装 node_modules、实现处理测试的方法等等。

   {
     "name": "foo","private": true,"dependencies": {
       "@rails/actioncable": "^6.0.0","@rails/activestorage": "^6.0.0","@rails/ujs": "^6.0.0","turbolinks": "^5.2.0"
    },"version": "0.1.0","devDependencies": {
      "webpack-dev-server": "^3.11.2"
    }
  }

这是我的 package.json。我注意到它没有“@rails/webpacker”作为依赖项。 希望您能够帮助我。 这是我的 Gemfile：

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

ruby '2.7.2'

# Bundle edge Rails instead: gem 'rails',github: 'rails/rails'
gem 'rails','~> 6.1.1'
# Use sqlite3 as the database for Active Record
gem 'sqlite3','~> 1.4'
# Use Puma as the app server
gem 'puma','~> 5.0'
# Use SCSS for stylesheets
gem 'sass-rails','>= 6'
# Transpile app-like JavaScript. Read more: https://github.com/rails/webpacker
gem 'webpacker','~> 5.0'
# 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','~> 2.7'
# Use Redis adapter to run Action Cable in production
# gem 'redis','~> 4.0'
# Use Active Model has_secure_password
# gem 'bcrypt','~> 3.1.7'

# Use Active Storage variant
# gem 'image_processing','~> 1.2'

# Reduces boot times through caching; required in config/boot.rb
gem 'bootsnap','>= 1.4.4',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','>= 4.1.0'
  # display performance information such as sql time and flame graphs for each request in your browser.
  # Can be configured to work on production as well see: https://github.com/MiniProfiler/rack-mini-profiler/blob/master/README.md
  gem 'rack-mini-profiler','~> 2.0'
  gem 'listen','~> 3.3'
  # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
  gem 'spring'
end

group :test do
  # Adds support for Capybara system testing and selenium driver
  gem 'capybara','>= 3.26'
  gem 'selenium-webdriver'
  # Easy installation and use of web drivers to run system tests with browsers
  gem 'webdrivers'
end

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

解决方法

我找到了问题所在。这是我的节点版本。我使用的是最新的但不是 LTS，所以没有安装一些像 node-sass 这样的软件包。我降级了，现在一切正常。