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

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

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react组件：

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

在我的本地环境上可以正常工作，但是将应用程序部署到heroku时，如果我尝试访问包含react_component助手的erb，则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

---

我也尝试过添加一个App组件并渲染它，但是它始终发出相同的消息。

我还在heroku上添加了一个节点buildpack，并确保该应用仅使用npm而不是yarn，并添加了节点版本：

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

但是我总是收到相同的消息

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

---

如果将pre render设置为true，则该组件将在生产中出现，日志上没有错误，但是我需要通过服务器渲染来完成。

---

按照Justing的建议，删除public / packs中的文件并在生产环境中进行编译后，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

解决方法

在我的本地环境下工作正常

您是否尝试过在本地进行预编译？

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

该错误应该非常明显。我的猜测是，在预编译期间会出现一些错误，因此文件js/server_rendering-7bdf65f03078e0e44c86.js不存在。

您可能还想确保/ public / packs目录中没有任何文件签入git repo。