Question

我今天开始学习Rails。我正在关注在线教程。我收到一个错误。在教程中，只要有错误，就会在浏览器中显示错误的原因。但我只收到此消息：

We're sorry, but something went wrong. If you are the application owner check the logs for more information.

如何使Rails像error文件中的Django一样显示实际的debug = True来显示错误？

development.rb

settings.py

日志

Rails.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.
  # This option may cause significant delays in view rendering with a large
  # number of complex assets.
  config.assets.debug = 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

  # Adds additional error checking when serving assets at runtime.
  # Checks for improperly declared sprockets dependencies.
  # Raises helpful error messages.
  config.assets.raise_runtime_errors = true

  # Raises error for missing translations
  # config.action_view.raise_on_missing_translations = true
end

config.ru

/usr/lib/ruby/vendor_ruby/rails/app_rails_loader.rb:39: warning: Insecure world writable dir /usr/lib/jvm/java-8-openjdk-amd64/bin in PATH, mode 040777
Array values in the parameter to `Gem.paths=` are deprecated.
Please use a String or nil.
An Array ({"GEM_PATH"=>["/var/lib/gems/2.5.0", "/home/laxman/.gem/ruby/2.5.0", "/usr/lib/x86_64-linux-gnu/rubygems-integration/2.5.0", "/usr/share/rubygems-integration/2.5.0", "/usr/share/rubygems-integration/all"]}) was passed in from bin/rails:3:in `load'
Warning: Running `gem pristine --all` to regenerate your installed gemspecs (and deleting then reinstalling your bundle if you use bundle --path) will improve the startup performance of Spring.
/usr/lib/ruby/vendor_ruby/sprockets/digest_utils.rb:47: warning: constant ::Fixnum is deprecated
/usr/lib/ruby/vendor_ruby/sprockets/digest_utils.rb:51: warning: constant ::Bignum is deprecated
/usr/lib/ruby/vendor_ruby/sprockets/processor_utils.rb:110: warning: constant ::Fixnum is deprecated
/usr/lib/ruby/vendor_ruby/sprockets/processor_utils.rb:111: warning: constant ::Bignum is deprecated
=> Booting WEBrick
=> Rails 4.2.10 application starting in development on http://localhost:3000
=> Run `rails server -h` for more startup options
=> Ctrl-C to shutdown server
[2019-04-27 16:46:06] INFO  WEBrick 1.4.2
[2019-04-27 16:46:06] INFO  ruby 2.5.1 (2018-03-29) [x86_64-linux-gnu]
[2019-04-27 16:46:06] INFO  WEBrick::HTTPServer#start: pid=2467 port=3000


Started GET "/" for 127.0.0.1 at 2019-04-27 16:46:10 +0530
  ActiveRecord::SchemaMigration Load (0.1ms)  SELECT "schema_migrations".* FROM "schema_migrations"

application.rb

# This file is used by Rack-based servers to start the application.

require ::File.expand_path('../config/environment', __FILE__)
run Rails.application

Answer 1

在查看full application您posted之后，我能够重现该问题。

在其他StackOverflow帖子中，这个问题是reported before，但我将在这里重复：

您需要将web-console宝石更新为版本3.0+；尤其是由于this bug fix在代理后面的VM /容器中运行Rails服务器。

换句话说，您需要将this line in your Gemfile更新为：

gem 'web-console', '~> 3.0'

然后运行bundle install。

在相关说明中，您似乎在项目中使用了许多过时的软件版本（例如，rails版本4.2）。通常可以通过使依赖项保持最新状态来缓解此类问题。

在Ruby on Rails中的浏览器中显示完整错误

1 个答案: