我正在根据“Rails 入门”创建一个新的 Rails 应用程序。应用程序在步骤 4.1 中正常启动。但是当我创建我的第一个 Controller 时，我有一个 webpack 错误。
我是 webpack 的新手，我的所有文档都是红色的，但我不明白有什么问题或遗漏了什么......
rails webpacker:install
identical config/webpacker.yml
Copying webpack core config
exist config/webpack
identical config/webpack/development.js
identical config/webpack/environment.js
identical config/webpack/production.js
identical config/webpack/test.js
Copying postcss.config.js to app root directory
identical postcss.config.js
Copying babel.config.js to app root directory
identical babel.config.js
Copying .browserslistrc to app root directory
identical .browserslistrc
The JavaScript app source directory already exists
apply C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/webpacker-4.0.7/lib/install/binstubs.rb
Copying binstubs
exist bin
identical bin/webpack
identical bin/webpack-dev-server
append .gitignore
Installing all JavaScript dependencies [4.0.7]
run yarn add @rails/webpacker from "."
yarn add v1.17.3
[1/4] Resolving packages...
[2/4] Fetching packages...
info fsevents@1.2.9: The platform "win32" is incompatible with this module.
info "fsevents@1.2.9" is an optional dependency and failed compatibility check. Excluding it from installation.
[3/4] Linking dependencies...
warning " > webpack-dev-server@3.8.2" has unmet peer dependency "webpack@^4.0.0".
warning "webpack-dev-server > webpack-dev-middleware@3.7.2" has unmet peer dependency "webpack@^4.0.0".
[4/4] Building fresh packages...
success Saved 1 new dependency.
info Direct dependencies
└─ @rails/webpacker@4.0.7
info All dependencies
└─ @rails/webpacker@4.0.7
Done in 4.48s.
Installing dev server for live reloading
run yarn add --dev webpack-dev-server from "."
yarn add v1.17.3
[1/4] Resolving packages...
[2/4] Fetching packages...
info fsevents@1.2.9: The platform "win32" is incompatible with this module.
info "fsevents@1.2.9" is an optional dependency and failed compatibility check. Excluding it from installation.
[3/4] Linking dependencies...
warning "webpack-dev-server > webpack-dev-middleware@3.7.2" has unmet peer dependency "webpack@^4.0.0".
warning " > webpack-dev-server@3.8.2" has unmet peer dependency "webpack@^4.0.0".
[4/4] Building fresh packages...
success Saved 1 new dependency.
info Direct dependencies
└─ webpack-dev-server@3.8.2
info All dependencies
└─ webpack-dev-server@3.8.2
Done in 4.92s.
Webpacker successfully installed �🎉🍰🍰
Webpacker::Manifest::MissingEntryError in Welcome#index
Showing C:/Users/[...]/site_test/app/views/layouts/application.html.erb where line #9 raised:
Webpacker can't find application in C:/Users/[...]/site_test/public/packs/manifest.json. Possible causes:
1. You want to set webpacker.yml value of compile to true for your environment
unless you are using the `webpack -w` or the webpack-dev-server.
2. webpack has not yet re-run to reflect updates.
3. You have misconfigured Webpacker's config/webpacker.yml file.
4. Your webpack configuration is not creating a manifest.
Your manifest contains:
{
}
Extracted source (around line #9):
7
8 <%= stylesheet_link_tag 'application', media: 'all', 'data-turbolinks-track': 'reload' %>
9 <%= javascript_pack_tag 'application', 'data-turbolinks-track': 'reload' %>
10 </head>
11 <body>
12
最佳答案
运行命令
rails webpacker:install
这为我解决了这个问题。
关于ruby-on-rails - Webpacker 找不到应用程序，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/58270161/