Question

当我运行heroku run rake db：migrate in production时，我收到此错误。弃用警告：不推荐使用config.serve_static_files，将在Rails 5.1中删除。请改用config.public_file_server.enabled = true。（从/app/config/environments/production.rb:25中的块调用）

我在stackoverflow上尝试了一些解决方案，但我无法解决问题。

这是我的production.rb文件

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

  # 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 serving static files from the `/public` folder by default since
  # Apache or NGINX already handles this.
  config.serve_static_files = 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

  # Asset digests allow you to set far-future HTTP expiration dates on all assets,
  # yet still be able to expire them through the digest params.
  config.assets.digest = true

  # `config.assets.precompile` and `config.assets.version` have moved to config/initializers/assets.rb

  # 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

  # 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 = [ :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'

  # 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

  # Do not dump schema after migrations.
  config.active_record.dump_schema_after_migration = false
end

Answer 1

是，请将弃用的代码替换为：

 config.public_file_server.enabled = ENV['RAILS_SERVE_STATIC_FILES'].present?

来源：https://devcenter.heroku.com/articles/getting-started-with-rails5#heroku-gems

Answer 2

首先，这不是一个错误，它是一个警告，并从您的文件config.serve_static_files中删除此行，而不是使用config.public_file_server.enabled = true

Answer 3

可以替换

吗？

config.serve_static_files = ENV['RAILS_SERVE_STATIC_FILES'].present?

与

config.public_file_server.enabled = ENV['RAILS_SERVE_STATIC_FILES'].present?

看看这是否有效？

Answer 4

警告本身说：

DEPRECATION WARNING：不推荐使用config.serve_static_files 在Rails 5.1中删除。请使用config.public_file_server.enabled =而是真的。（从/app/config/environments/production.rb:25中的块调用）

在 production.rb 文件中的第25行：

你需要替换：

  config.serve_static_files = ENV['RAILS_SERVE_STATIC_FILES'].present?

与

config.public_file_server.enabled = true # ENV['RAILS_SERVE_STATIC_FILES'].present?

了解有关 Rails 5 serve_static_assets deprecation warning

的更多信息

Answer 5

如果您已更新配置选项以使用public_file_server，但仍看到过时警告，请按照Heroku的建议尝试从gem 'rails_12factor'中删除Gemfile。

https://devcenter.heroku.com/articles/getting-started-with-rails5#heroku-gems

当我运行heroku run rake db：migrate in production时，我收到此错误

5 个答案: