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我在 Rails 服务器上使用 Opal 将 Ruby 转换为 Javascript，并且在开发和生产模式下，一切都在我本地机器上的测试服务器上完美运行。但是，当文件上传到实际服务器时，ActionView::Template::Error会生成一条 with no 消息。它指示的行是加载 Javascript (Opal) 的行，实际上，当删除该行时，错误就会消失（尽管这显然不是解决方案）。服务器上的所有文件都与本地机器上的文件相同，除了bin文件夹和文件。dblogtmpGemfile.lock

我认为这可能是一个缓存问题，因为最初只有已更改的文件不起作用，但我不能确定，因为现在所有文件都已损坏。

我试过删除tmp文件夹，使用gem pristine --all和使用gem update，但这些都没有帮助。

我一直在寻找解决方案，但没有错误消息，我不知道从哪里开始。

此外，该服务器之前确实可以工作，但最近的更改（将脚本转换为 Opal）破坏了它。

这是错误日志中许多类似的错误消息之一：

I, [2016-09-15T11:24:58.760385 #18949]  INFO -- : [36ec2f26-e1ac-43a1-b3c9-2e211c80bedb] Started GET "/" for 123.211.235.196 at 2016-09-15 11:24:58 +0000
I, [2016-09-15T11:24:58.762917 #18949]  INFO -- : [36ec2f26-e1ac-43a1-b3c9-2e211c80bedb] Processing by WelcomeController#index as HTML
I, [2016-09-15T11:24:58.766164 #18949]  INFO -- : [36ec2f26-e1ac-43a1-b3c9-2e211c80bedb]   Rendering welcome/index.haml within layouts/application
I, [2016-09-15T11:24:58.768033 #18949]  INFO -- : [36ec2f26-e1ac-43a1-b3c9-2e211c80bedb]   Rendered welcome/index.haml within layouts/application (1.7ms)
I, [2016-09-15T11:25:15.383874 #18949]  INFO -- : [36ec2f26-e1ac-43a1-b3c9-2e211c80bedb] Completed 500 Internal Server Error in 16620ms (ActiveRecord: 0.0ms)
F, [2016-09-15T11:25:15.388426 #18949] FATAL -- : [36ec2f26-e1ac-43a1-b3c9-2e211c80bedb]
F, [2016-09-15T11:25:15.388528 #18949] FATAL -- : [36ec2f26-e1ac-43a1-b3c9-2e211c80bedb] ActionView::Template::Error ():
F, [2016-09-15T11:25:15.388756 #18949] FATAL -- : [36ec2f26-e1ac-43a1-b3c9-2e211c80bedb]     4:                 = csrf_meta_tags
F, [2016-09-15T11:25:15.388803 #18949] FATAL -- : [36ec2f26-e1ac-43a1-b3c9-2e211c80bedb]     5:                 = favicon_link_tag '/favicon.ico'
F, [2016-09-15T11:25:15.388842 #18949] FATAL -- : [36ec2f26-e1ac-43a1-b3c9-2e211c80bedb]     6:                 = stylesheet_link_tag params[:controller], media: 'all'
F, [2016-09-15T11:25:15.388880 #18949] FATAL -- : [36ec2f26-e1ac-43a1-b3c9-2e211c80bedb]     7:                 = javascript_include_tag params[:controller]
F, [2016-09-15T11:25:15.388917 #18949] FATAL -- : [36ec2f26-e1ac-43a1-b3c9-2e211c80bedb]     8:                 = yield :head
F, [2016-09-15T11:25:15.388953 #18949] FATAL -- : [36ec2f26-e1ac-43a1-b3c9-2e211c80bedb]     9:         %body.standard{ class: [yield(:body_class), params[:controller]] }
F, [2016-09-15T11:25:15.388991 #18949] FATAL -- : [36ec2f26-e1ac-43a1-b3c9-2e211c80bedb]    10:                 #wrapper= yield
F, [2016-09-15T11:25:15.389028 #18949] FATAL -- : [36ec2f26-e1ac-43a1-b3c9-2e211c80bedb]
F, [2016-09-15T11:25:15.389064 #18949] FATAL -- : [36ec2f26-e1ac-43a1-b3c9-2e211c80bedb] app/views/layouts/application.haml:7:in `_app_views_layouts_application_haml__2281947942353102831_69956393327940'

我config/production.rb的如下：

Rails.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 threaded 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

  # Disable serving static files from the `/public` folder by default since
  # Apache or NGINX already handles this.
  config.public_file_server.enabled = ENV['RAILS_SERVE_STATIC_FILES'].present?

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

  # Do not fallback to assets pipeline if a precompiled asset is missed.
  config.assets.compile = true

  # `config.assets.precompile` and `config.assets.version` have moved to config/initializers/assets.rb

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

  # 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

  # Mount Action Cable outside main process or domain
  # config.action_cable.mount_path = nil
  # config.action_cable.url = 'wss://example.com/cable'
  # config.action_cable.allowed_request_origins = [ 'http://example.com', /http:\/\/example.*/ ]

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

  # Use the lowest log level to ensure availability of diagnostic information
  # when problems arise.
  config.log_level = :debug

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

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

  # Use a real queuing backend for Active Job (and separate queues per environment)
  # config.active_job.queue_adapter     = :resque
  # config.active_job.queue_name_prefix = "ontonator_xyz_#{Rails.env}"
  config.action_mailer.perform_caching = false

  # 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 cannot be found).
  config.i18n.fallbacks = true

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

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

  # Use a different logger for distributed setups.
  # require 'syslog/logger'
  # config.logger = ActiveSupport::TaggedLogging.new(Syslog::Logger.new 'app-name')

  if ENV["RAILS_LOG_TO_STDOUT"].present?
    logger           = ActiveSupport::Logger.new(STDOUT)
    logger.formatter = config.log_formatter
    config.logger = ActiveSupport::TaggedLogging.new(logger)
  end

  # Do not dump schema after migrations.
  config.active_record.dump_schema_after_migration = false
end

编辑：

我现在可以确认它是 Opal。再次使用 CoffeeScript 可以防止问题发生。

另外，这个问题现在出现在我的本地机器上，我认为这是因为编译文件的缓存是在开发模式下生成的，而这些缓存是在生产模式下使用的。由于我没有在服务器上以开发模式进行测试，所以我没有意识到。

设置config.consider_all_requests_local = true解决了这个问题，它在被删除后继续工作，但一旦任何相关的 Javascript 资产被修改，它就会停止工作。

也许我错了，但config.assets.compile = true如果它们没有预编译，不应该让服务器编译资产？

编辑2：

它也适用于预编译资产，但我不明白为什么这对于config.assets.compile = true选项集是必要的。

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