当使用带有react rails gem的组件时，没有这样的文件或目录@rb_sysopen

Question

我将rails 5.1.7与gem react rails一起使用。

我在erb视图中添加了一个反应组件：

<%= react_component("cardlist", { all_cards: @all_cards }, {prerender: true}) %>

这在我的本地环境中运行良好，但在将应用程序部署到heroku时，如果我试图访问包含react_component助手的erb，我会在日志中收到以下消息：

ActionView::Template::Error (No such file or directory @ rb_sysopen - /app/public/packs/js/server_rendering-7bdf65f03078e0e44c86.js

---

我也尝试添加一个应用程序组件并进行渲染，但它一直给出相同的消息。

我还在heroku上添加了一个节点构建包，我确保该应用程序只使用npm而不是yarn，并添加了节点版本：

"engines": {
"node": "12.18.3"
}

但我总是收到相同的信息

ActionView::Template::Error (No such file or directory @ rb_sysopen - /app/public/packs/js/server_rendering-7bdf65f03078e0e44c86.js

---

如果我将预渲染设置为true，则组件在生产中显示，日志上没有错误，但我需要使用服务器渲染来完成。

---

按照Justing的建议，删除公共/包中的文件并在生产环境中编译后，我得到了：

2020-09-30T05:35:06.341918+00:00 app[web.1]: F, [2020-09-30T05:35:06.341829 #4] FATAL -- : [ce9e5a3a-b642-4de0-bb80-e4210172c687] ActionView::Template::Error (Webpacker can't find server_rendering.js in /app/public/packs/manifest.json. Possible causes:
2020-09-30T05:35:06.341919+00:00 app[web.1]: 1. You want to set webpacker.yml value of compile to true for your environment
2020-09-30T05:35:06.341919+00:00 app[web.1]: unless you are using the `webpack -w` or the webpack-dev-server.
2020-09-30T05:35:06.341920+00:00 app[web.1]: 2. webpack has not yet re-run to reflect updates.
2020-09-30T05:35:06.341921+00:00 app[web.1]: 3. You have misconfigured Webpacker's config/webpacker.yml file.
2020-09-30T05:35:06.341921+00:00 app[web.1]: 4. Your webpack configuration is not creating a manifest.
2020-09-30T05:35:06.341922+00:00 app[web.1]: Your manifest contains:
2020-09-30T05:35:06.341922+00:00 app[web.1]: {
2020-09-30T05:35:06.341923+00:00 app[web.1]: }
2020-09-30T05:35:06.341923+00:00 app[web.1]: ):
2020-09-30T05:35:06.342250+00:00 app[web.1]: F, [2020-09-30T05:35:06.342174 #4] FATAL -- : [ce9e5a3a-b642-4de0-bb80-e4210172c687]     44:         <% @hotel_search_filter = t :hotel_search__filter %>
2020-09-30T05:35:06.342252+00:00 app[web.1]: [ce9e5a3a-b642-4de0-bb80-e4210172c687]     46:         <%= @count_filters = count_filters %>
2020-09-30T05:35:06.342255+00:00 app[web.1]: [ce9e5a3a-b642-4de0-bb80-e4210172c687]     47:         <%= react_component("App", { all_ro

我的webpack配置文件：

# Note: You must restart bin/webpack-dev-server for changes to take effect
default: &default
source_path: app/javascript
source_entry_path: packs
public_root_path: public
public_output_path: packs
cache_path: tmp/cache/webpacker
check_yarn_integrity: false
webpack_compile_output: true
# 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
# Extract and emit a css file
extract_css: false
static_assets_extensions:
- .jpg
- .jpeg
- .png
- .gif
- .tiff
- .ico
- .svg
- .eot
- .otf
- .ttf
- .woff
- .woff2
extensions:
- .jsx
- .mjs
- .js
- .sass
- .scss
- .css
- .module.sass
- .module.scss
- .module.css
- .png
- .svg
- .gif
- .jpeg
- .jpg
development:
<<: *default
compile: true
# Verifies that correct packages and versions are installed by inspecting package.json, yarn.lock, and node_modules
check_yarn_integrity: true
# Reference: https://webpack.js.org/configuration/dev-server/
dev_server:
https: false
host: localhost
port: 3035
public: localhost:3035
hmr: false
# Inline should be set to true if using HMR
inline: true
overlay: true
compress: true
disable_host_check: true
use_local_ip: false
quiet: false
pretty: false
headers:
'Access-Control-Allow-Origin': '*'
watch_options:
ignored: '**/node_modules/**'

test:
<<: *default
compile: true
# Compile test packs to a separate directory
public_output_path: packs-test
production:
<<: *default
# Production depends on precompilation of packs prior to booting for performance.
compile: true
# Extract and emit a css file
extract_css: true
# Cache manifest.json for performance
cache_manifest: true

Answer 1

在本地环境上运行良好

是否尝试在本地预编译？

RAILS_ENV=production NODE_ENV=production rake assets:precompile

然后使用运行您的rails应用程序

RAILS_ENV=production rails s

这个错误应该很明显。我的猜测是，在预编译过程中出现了一些错误，因此文件js/server_rendering-7bdf65f03078e0e44c86.js不存在。

您可能还想确保您的/public/packs目录中没有任何文件被签入您的git repo。