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

Question

有类似的帖子 this, this, and this，但 none 回答问题。

all.js 如何在 Rails 3.2.12 的生产环境中编译？如下图 production.rb 文件所示，编译资产被禁用，因此不清楚 all.js 首先是如何生成的。

运行 rake assets:precompile 生成以下错误：

rake aborted! Don't know how to build task 'assets:precompile' (See the list of available tasks with rake --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 all.js 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（次优）步骤使用 application.js 的最新更改刷新 all.js：

发现安装的 Ruby 与 Rails 3.2.12 不兼容，因此降级为 Ruby 2.1.2。这修复了 rake assets:precompile 错误。
运行以下命令，其中一些可能是多余的，但没有时间隔离所需的最少步骤数：
- 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

在rm all.js这一步之后，神奇的出现了重新生成的all.js，但是如果其他人不行，请记得先备份all.js！

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

Generating new version of all.js to reflect changes from application.js: how does Rails 3.2.12 compile all.js?

rubygems

ruby-on-rails

ruby-on-rails-3