ruby-on-rails - Rails 4 : getting Webpacker to work with CircleCI

我正在尝试将Webpacker集成到我正在开发的Rails 4应用程序中。我已将gem添加到Gemfile中，并运行指令以使用Webpacker和Vue.js进行一切设置。 Assets 在开发中可以正常编译，但是当我将其推送到我们的CI管道时，我看到CircleCI返回以下错误:

ActionView::Template::Error:         ActionView::Template::Error: Webpacker can't find application in /home/circleci/app/public/packs-test/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:
  {
  }

不知道我需要解决其中哪些错误。

我的config/webpacker.yml文件仅使用默认设置，如下所示:

# 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: false

  # 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:
    - .mjs
    - .js
    - .sass
    - .scss
    - .css
    - .module.sass
    - .module.scss
    - .module.css
    - .png
    - .svg
    - .gif
    - .jpeg
    - .jpg

development:
  <<: *default
  compile: true

  # Verifies that versions and hashed value of the package contents in the project's package.json
  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
    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: false

  # Extract and emit a css file
  extract_css: true

  # Cache manifest.json for performance
  cache_manifest: true

我需要更正 list 文件吗？如果是这样，怎么办？

提前致谢!

最佳答案

通过在.circleci/config.yml中添加以下内容来解决:

Docker镜像:
image: circleci/ruby:<<ruby_version>>-node-browsers
(这是必要的，这样我们就可以预安装了Node.js的Docker镜像)

环境变量:
NODE_ENV: test
这是必需的，以便webpacker:compile步骤在测试环境下运行。

然后执行以下步骤:

yarn_install:
  steps:
    - restore_cache:
        keys:
          - yarn-cache-v1-{{ checksum "yarn.lock" }}
          - yarn-cache-v1-
    - run: yarn install --cache-folder ~/.cache/yarn
    - run: bundle exec rake webpacker:compile
    - save_cache:
        key: yarn-cache-v1-{{ checksum "yarn.lock" }}
        paths:
          - ~/.cache/yarn

这似乎已经成功了!