生产模式下的 Rails 可安装发动机资产

Question

我在 rails 4 中构建了一个可安装的 rails 引擎。我在另一个应用程序中使用了该引擎。在开发模式下一切正常，我可以毫无问题地访问引擎，并且所有引擎资源都正确显示。

但是当我将主机应用程序部署到我的服务器时，我的 scss 和 js 文件不再包含在内。所有引擎资产均已正确编译。在 public/assets 目录中存在一个带有引擎名称的目录，我可以找到已编译的 css 和 js 文件以及图像。

但是！当我从主机应用程序中打开引擎页面（因此呈现引擎布局文件）时，

<%= stylesheet_link_tag "backbone/application.css", media: "all" %>
<%= javascript_include_tag "backbone/application.js" %> 

引擎布局文件中的标题标签被翻译成：

<link href="/stylesheets/backbone/backbone.css" media="all" rel="stylesheet" />
<script src="/javascripts/backbone/backbone.js"></script>.

显然，这些标签并不指向资产文件夹。此外，application.js 和 application.css 被重命名为backbone.js 和backbone.css。

有人能告诉我为什么在部署期间编译资产，但是应该精确定位资产的样式表 javascript 标签完全错误吗？我是不是忘记了引擎中的一些配置？

更新

config/environment/development.rb：

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

  # In the development environment your application's code is reloaded on
  # every request. This slows down response time but is perfect for development
  # since you don't have to restart the web server when you make code changes.
  config.cache_classes = false

  # Do not eager load code on boot.
  config.eager_load = false

  # Show full error reports and disable caching.
  config.consider_all_requests_local       = true
  config.action_controller.perform_caching = false

  # Don't care if the mailer can't send.
  config.action_mailer.raise_delivery_errors = false

  # Print deprecation notices to the Rails logger.
  config.active_support.deprecation = :log

  # Raise an error on page load if there are pending migrations
  config.active_record.migration_error = :page_load

  # Debug mode disables concatenation and preprocessing of assets.
  config.assets.debug = true

  config.action_mailer.default_url_options = { :host => 'localhost:3000' }

end

config/environment/production.rb：

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

  # Code is not reloaded between requests.
  config.cache_classes = true

  # Eager load code on boot. This eager loads most of Rails and
  # your application in memory, allowing both thread web servers
  # and those relying on copy on write to perform better.
  # Rake tasks automatically ignore this option for performance.
  config.eager_load = true

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

  # Enable Rack::Cache to put a simple HTTP cache in front of your application
  # Add `rack-cache` to your Gemfile before enabling this.
  # For large-scale production use, consider using a caching reverse proxy like nginx, varnish or squid.
  # config.action_dispatch.rack_cache = true

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

  # Compress JavaScripts and CSS.
  config.assets.js_compressor  = :uglifier
  # config.assets.css_compressor = :sass

  # Whether to fallback to assets pipeline if a precompiled asset is missed.
  config.assets.compile = false

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

  # Version of your assets, change this if you want to expire all your assets.
  config.assets.version = '1.0'

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

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

  # Set to :debug to see everything in the log.
  config.log_level = :info

  # Prepend all log lines with the following tags.
  # config.log_tags = [ :subdomain, :uuid ]

  # Use a different logger for distributed setups.
  # config.logger = ActiveSupport::TaggedLogging.new(SyslogLogger.new)

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

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

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

  # Ignore bad email addresses and do not raise email delivery errors.
  # Set this to true and configure the email server for immediate delivery to raise delivery errors.
  # config.action_mailer.raise_delivery_errors = false

  # 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

  # Disable automatic flushing of the log to improve performance.
  # config.autoflush_log = false

  # Use default logging formatter so that PID and timestamp are not suppressed.
  config.log_formatter = ::Logger::Formatter.new

  config.action_mailer.default_url_options = { :host => 'arbeidsconferentie.nl' }
end

Answer 1

根据您使用的托管服务提供商，您可能需要设置：

config.serve_static_assets = true

例如，Heroku 不向服务器静态资产提供 nginx 或 apache。此外，如果您想在本地机器上以生产模式运行 Rails 服务器，则需要将此配置设置为 true。