当我尝试使用 webpacker 在我的新 rails 5.1 应用程序中加载页面时收到此错误。我希望 webpacker 也可以处理 CSS。
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'
我在./bin/webpack-dev-server旁边运行rails server。我使用以下方法创建了应用程序：
rails new myapp --webpack
bundle
bundle exec rails webpacker:install:react
我有一个 CSS 文件app/javascript/src/application.css。（这样写让我觉得有些不对劲。将 css 放在 javascript 目录中似乎不合适。）
我只定义了单个根路由root to: 'home#welcome'。
这是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>
这是我的config/webpacker.yml（我也尝试过false在开发中设置编译。
# 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
我不想预先添加太多细节，以防它们更分散注意力然后有帮助。请询问其他任何问题，我会补充我的问题。谢谢！