stylesheet_pack_tag not finding app/javascript/src

I am receiving this error when I try to load a page in my new rails 5.1 app using webpacker. I would like webpacker to handle CSS as well.

Started GET "/" for ::1 at 2017-09-01 12:20:23 -0400
Processing by HomeController#welcome as HTML
  Rendering home/welcome.html.erb within layouts/application
  Rendered home/welcome.html.erb within layouts/application (0.4ms)
Completed 500 Internal Server Error in 28ms



ActionView::Template::Error (Webpacker can't find application.css in /Users/myusername/Documents/testing-ground/myapp/public/packs/manifest.json. Possible causes:
1. You want to set wepbacker.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:
{
  "application.js": "/packs/application-1ba6db9cf5c0fb48c785.js",
  "hello_react.js": "/packs/hello_react-812cbb4d606734bec7a9.js"
}
):
     7:     <%= stylesheet_link_tag    'application', media: 'all', 'data-turbolinks-track': 'reload' %>
     8:     <%= javascript_include_tag 'application', 'data-turbolinks-track': 'reload' %>
     9:     <%= javascript_pack_tag 'application' %>
    10: <%= stylesheet_pack_tag 'application' %>
    11:   </head>
    12:
    13:   <body>

app/views/layouts/application.html.erb:10:in `_app_views_layouts_application_html_erb__1178607493020013329_70339213085820'

I am running the ./bin/webpack-dev-server alongside the rails server. I created the app using:

rails new myapp --webpack bundle bundle exec rails webpacker:install:react

I have a single CSS file app/javascript/src/application.css. (Writing that makes me feel something is wrong. Putting css inside of a javascript directory seems improper.)

I just have single root route defined root to: 'home#welcome'.

Here is app/views/layouts/application.html.erb

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

    <%= javascript_pack_tag 'application' %>
    <%= stylesheet_pack_tag 'application' %>
  </head>

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

Here is my config/webpacker.yml (I have tried also setting compile to false in development.

# Note: You must restart bin/webpack-dev-server for changes to take effect

default: &default
  source_path: app/javascript
  source_entry_path: packs
  public_output_path: packs
  cache_path: tmp/cache/webpacker

  # Additional paths webpack should lookup modules
  # ['app/assets', 'engine/foo/app/assets']
  resolved_paths: []

  # Reload manifest.json on all requests so we reload latest compiled packs
  cache_manifest: false

  extensions:
    - .coffee
    - .erb
    - .js
    - .jsx
    - .ts
    - .vue
    - .sass
    - .scss
    - .css
    - .png
    - .svg
    - .gif
    - .jpeg
    - .jpg

development:
  <<: *default
  compile: true

  dev_server:
    host: localhost
    port: 3035
    hmr: false
    https: false

test:
  <<: *default
  compile: true

  # Compile test packs to a separate directory
  public_output_path: packs-test

production:
  <<: *default

  # Production demands on precompilation of packs prior to booting for performance.
  compile: false

  # Cache manifest.json for performance
  cache_manifest: true

I don't want to add too many details up-front incase they are more distracting then helpful. Please ask for anything else and I'll add to my question. Thanks!

标签： css ruby-on-rails-5 webpacker

5条回答

贼婆χ

2楼-- · 2019-04-18 10:01

I had this exact problem, on Rails 5.2 with Webpack's current version as of Dec 5, 2018 (4.2.x?) and just resolved it.

The fix for me was renaming application.css to anything else. I think there was a naming collision with Webpack.

So now my pack tags look like:

<%= stylesheet_pack_tag 'styles', media: 'all', 'data-turbolinks-track': 'reload' %>
<%= javascript_pack_tag 'application', 'data-turbolinks-track': 'reload' %>

I did NOT need to import the stylesheet inside application.js. This appears to make no difference for me.

OPTIONAL BONUS: I also renamed the app/javascript to app/webpack because I also thought it was confusing to run styles out of a Javascript directory (and learned from this youtube video that it could be done: https://www.youtube.com/watch?v=I_GGYIWbmg0&feature=youtu.be&t=32m35s). It was as simple as

Renaming the directory to app/webpack
Adjusting webpack.yml like so: source_path: app/webpack

Hope that helps.

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爱情/是我丢掉的垃圾

3楼-- · 2019-04-18 10:06

In your application.js :

import "path to application.css"

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仙女界的扛把子

4楼-- · 2019-04-18 10:06

I had the same problem and solved it with running yarn add postcss-smart-import in console.

upd: rails 5.2, webpacker 3.5, default config.

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趁早两清

5楼-- · 2019-04-18 10:17

When HMR is set to false the styles are inlined within the bundle so you won't get any css bundle. In your webpacker.yml file, setting hmr to true should fix your problem. I realize this is an old question. Relevant, though.

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时光不老，我们不散

6楼-- · 2019-04-18 10:25

In "config/environments/production.rb":

config.public_file_server.enabled = true

Delete "public/assets" and "public/pack"

And run:

RAILS_ENV=production bundle exec rake assets:precompile

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stylesheet_pack_tag not finding app/javascript/src

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