香草Rails 6.0：“错误命令” webpack“未找到”

Question

香草Rails 6.0：“错误命令” webpack“未找到”

win*_*yer 6 ruby-on-rails webpack ruby-on-rails-6

系统：

Ruby：2.6.3p62（rvm）
Rails：6.0
OS：macOS 10.14.6

设定

全新的Rails 6.0应用程序：

$ rails new testshop2
$ cd testshop2
$ rails g controller Page index
$ rails s
=> Booting Puma
=> Rails 6.0.0 application starting in development 
=> Run `rails server --help` for more startup options
Puma starting in single mode...
* Version 3.12.1 (ruby 2.6.3-p62), codename: Llamas in Pajamas
* Min threads: 5, max threads: 5
* Environment: development
* Listening on tcp://localhost:3000
Use Ctrl-C to stop

Run Code Online (Sandbox Code Playgroud)

当我浏览到` http：// localhost：3000 / page / index '时，系统会遇到以下错误：

Started GET "/page/index" for ::1 at 2019-09-23 17:06:12 +0200
  (0.4ms)  SELECT sqlite_version(*)
Processing by PageController#index as HTML
  Rendering page/index.html.erb within layouts/application
  Rendered page/index.html.erb within layouts/application (Duration: 1.8ms | Allocations: 206)
[Webpacker] Compiling…
[Webpacker] Compilation failed:
error Command "webpack" not found.

Completed 500 Internal Server Error in 2021ms (ActiveRecord: 0.0ms | Allocations: 640080)



ActionView::Template::Error (Webpacker can't find application in /Users/stefan/Github/sandbox/testshop2/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:
{
}
):
    6:     <%= csp_meta_tag %>
    7: 
    8:     <%= stylesheet_link_tag 'application', media: 'all', 'data-turbolinks-track': 'reload' %>
    9:     <%= javascript_pack_tag 'application', 'data-turbolinks-track': 'reload' %>
    10:   </head>
    11: 
    12:   <body>

app/views/layouts/application.html.erb:9

Run Code Online (Sandbox Code Playgroud)

我怎样才能解决这个问题？它说，error Command "webpack" not found.但Rails不应该自动安装所有需要的东西吗？

Answer 1

Pro*_*ton 9

当我尝试在Ubuntu 20.04中设置新的Rails 6应用程序时，我也遇到了同样的挑战。

\n
当我启动 Rails 服务器时，出现错误：
\n
error Command "webpack" not found.\ninfo Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.\n09:17:58 webpacker.1 | exited with code 1\n09:17:58 system | sending SIGTERM to all processes\n09:17:58 watcher.1 | exited with code 1\n09:17:58 web.1 | terminated by SIGTERM\n
Run Code Online (Sandbox Code Playgroud)\n
这是我修复它的方法：
\n
对我来说，问题是由于互联网连接较差，无法完全安装webpacker及其所有依赖项。所以每次我运行命令时：
\n
bundle exec rails webpacker:install\n
Run Code Online (Sandbox Code Playgroud)\n
我得到这个输出：
\n
Installing all JavaScript dependencies [4.3.0]\n run yarn add @rails/webpacker@4.3.0 from "."\nyarn add v1.22.5\n[1/4] Resolving packages...\ninfo There appears to be trouble with your network connection. Retrying...\ninfo There appears to be trouble with your network connection. Retrying...\n
Run Code Online (Sandbox Code Playgroud)\n
我只需移动到互联网连接更好的区域，然后运行命令：
\n
bundle exec rails webpacker:install\n
Run Code Online (Sandbox Code Playgroud)\n
或者
\n
rails webpacker:install\n
Run Code Online (Sandbox Code Playgroud)\n
这次，它成功运行并安装了webpacker它的所有依赖项，它给了我最终的输出：
\n
[4/4] Building fresh packages...\nsuccess Saved 1 new dependency.\ninfo Direct dependencies\n\xe2\x94\x94\xe2\x94\x80 webpack-dev-server@3.11.0\ninfo All dependencies\n\xe2\x94\x94\xe2\x94\x80 webpack-dev-server@3.11.0\nDone in 5.90s.\n
Run Code Online (Sandbox Code Playgroud)\n

Answer 2

Mik*_*ike 8

编辑：

这是我的第一篇文章，所以如果我弄错了发布约定，请原谅我。

问题来自本地计算机上的节点版本。当您创建 Rails 应用程序时，您可能会弹出这样的错误：

The JavaScript app source directory already exists
   apply  /Users/mconiaris/.rbenv/versions/2.6.4/lib/ruby/gems/2.6.0/gems/webpacker-4.0.7/lib/install/binstubs.rb
  Copying binstubs
       exist    bin
      create    bin/webpack
      create    bin/webpack-dev-server
      append  .gitignore
Installing all JavaScript dependencies [4.0.7]
         run  yarn add @rails/webpacker from "."
yarn add v1.17.3
info No lockfile found.
[1/4]   Resolving packages...
warning @rails/webpacker > postcss-preset-env > postcss-color-functional-notation > postcss-values-parser > flatten@1.0.2: I wrote this module a very long time ago; you should use something else.
[2/4]   Fetching packages...
error get-caller-file@2.0.5: The engine "node" is incompatible with this module. Expected version "6.* || 8.* || >= 10.*". Got "9.4.0"
error Found incompatible module.
info Visit https://yarnpkg.com/en/docs/cli/add for documentation about this command.

Run Code Online (Sandbox Code Playgroud)

就我而言，我的计算机上安装了 9.4.0 版的 node，这是 get-caller-file 包不想使用的一个版本。

要解决此问题，请先确认您的节点版本以确保它不是 9.xx：

node -v

Run Code Online (Sandbox Code Playgroud)

更新节点（我使用 nvm，但在节点网站的GitHub上还有其他方法）。

nvm install node # "node" is an alias for the latest version

Run Code Online (Sandbox Code Playgroud)

再次检查版本。如果它是 12.10 或更高版本，您应该已准备就绪。

开始另一个全新的 rails 项目，它应该可以正常工作。

祝你好运！

Answer 3

小智 5

我遇到了同样的问题。并尝试bundle exec rails webpacker:install按照@AFOC 的回答建议运行。然后我意识到我的节点版本与 rails/webpacker 不兼容。然后使用节点 12.x。有用。

我也通过删除整个应用程序重试，再次创建应用程序，没有再次遇到这个问题，它第一次工作。所以就我而言，它是节点版本。

归档时间：	6 年，2 月前
查看次数：	676 次
最近记录：	6 年，2 月前