生成all.js的新版本以反映application.js的更改：Rails 3.2.12如何编译all.js？

Question

有类似this，this和this之类的帖子，但没有一个回答这个问题。

如何在Rails 3.2.12的生产环境中编译all.js？如以下production.rb文件所示，编译资产被禁用，因此不清楚如何首先生成all.js。

正在运行rake assets:precompile会产生以下错误：

耙中止了！不知道如何构建任务“ assets：precompile”（请参阅rake的可用任务列表--tasks）

根本问题是如何更新all.js以反映application.js中的最新代码。重新启动服务器没有帮助，那么是什么触发了all.js的重新编译？

Test::Application.configure do
# Settings specified here will take precedence over those in config/application.rb

# The production environment is meant for finished, "live" apps.
# Code is not reloaded between requests
    config.cache_classes = true

    # Full error reports are disabled and caching is turned on
    config.consider_all_requests_local       = false
    config.action_controller.perform_caching = true

    # Specifies the header that your server uses for sending files
    config.action_dispatch.x_sendfile_header = "X-Sendfile"

    # For nginx:
    # config.action_dispatch.x_sendfile_header = 'X-Accel-Redirect'

    # If you have no front-end server that supports something like X-Sendfile,
    # just comment this out and Rails will serve the files

    # See everything in the log (default is :info)
    # config.log_level = :debug

    # Use a different logger for distributed setups
    # config.logger = SyslogLogger.new

    # Use a different cache store in production
    # config.cache_store = :mem_cache_store

    # Disable Rails's static asset server
    # In production, Apache or nginx will already do this
    config.serve_static_assets = false

    # Enable serving of images, stylesheets, and javascripts from an asset server
    # config.action_controller.asset_host = "http://assets.example.com"

    # Disable delivery errors, bad email addresses will be ignored
    # config.action_mailer.raise_delivery_errors = false

    # Enable threaded mode
    # config.threadsafe!

    # Enable locale fallbacks for I18n (makes lookups for any locale fall back to
    # the I18n.default_locale when a translation can not be found)
    config.i18n.fallbacks = true

    # Send deprecation notices to registered listeners
    config.active_support.deprecation = :notify

    # Compress JavaScripts and CSS
    config.assets.compress = true

    # Don't fallback to assets pipeline if a precompiled asset is missed
    config.assets.compile = false

    # Generate digests for assets URLs
    config.assets.digest = true

    # Defaults to Rails.root.join("public/assets")
    # config.assets.manifest = YOUR_PATH

    # Precompile additional assets (application.js, application.css, and all non-JS/CSS are already added)
    # config.assets.precompile += %w( search.js )

    # Force all access to the app over SSL, use Strict-Transport-Security, and use secure cookies.
    # config.force_ssl = true   
end

Answer 1

我们终于能够使用这些（次佳的）步骤以all.js中的最新更改刷新application.js：

1. 发现已安装的Ruby与Rails 3.2.12不兼容，因此降级为Ruby 2.1.2。这解决了rake assets:precompile错误。

2. 运行以下命令，其中一些命令可能是多余的，但是没有时间隔离所需的最少步骤：

   • bundle exec rake assets:clean
   • bundle exec rake assets:precompile
   • bundle exec rake assets:precompile RAILS_ENV=production
   • rake assets:precompile --trace
   • rake assets:precompile RAILS_ENV=production
   • rm all.js

重新生成的all.js神奇地出现在rm all.js步骤之后，但是如果这对其他人不起作用，请记住首先备份all.js！