全新安装导轨4.2.4和红宝石2.2.3。每次我尝试启动服务器时，都会遇到此错误。我也在下面发布了我的development.rb文件。在我的ROR安装中似乎已经出现了一些问题，但我无法弄清楚它是什么。有任何想法吗？谢谢你们！
Exiting
/Users/Rick/Desktop/RevMatchSite/forum_searcher/config/environments/development.rb:32:in fetch: key not found (KeyError)
from /Users/Rick/Desktop/RevMatchSite/forum_searcher/config/environments/development.rb:32:in block in <top (required)>
from /Library/Ruby/Gems/2.0.0/gems/railties-4.2.4/lib/rails/railtie.rb:210:in instance_eval
from /Library/Ruby/Gems/2.0.0/gems/railties-4.2.4/lib/rails/railtie.rb:210:in configure
from /Users/Rick/Desktop/RevMatchSite/forum_searcher/config/environments/development.rb:1:in <top (required)>
from /Library/Ruby/Gems/2.0.0/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:274:in require
from /Library/Ruby/Gems/2.0.0/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:274:in block in require
from /Library/Ruby/Gems/2.0.0/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:240:in load_dependency
from /Library/Ruby/Gems/2.0.0/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:274:in require
from /Library/Ruby/Gems/2.0.0/gems/railties-4.2.4/lib/rails/engine.rb:598:in block (2 levels) in <class:Engine>
from /Library/Ruby/Gems/2.0.0/gems/railties-4.2.4/lib/rails/engine.rb:597:in each
from /Library/Ruby/Gems/2.0.0/gems/railties-4.2.4/lib/rails/engine.rb:597:in block in <class:Engine>
from /Library/Ruby/Gems/2.0.0/gems/railties-4.2.4/lib/rails/initializable.rb:30:in instance_exec
from /Library/Ruby/Gems/2.0.0/gems/railties-4.2.4/lib/rails/initializable.rb:30:in run
from /Library/Ruby/Gems/2.0.0/gems/railties-4.2.4/lib/rails/initializable.rb:55:in block in run_initializers
from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/tsort.rb:150:in block in tsort_each
from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/tsort.rb:183:in block (2 levels) in each_strongly_connected_component
from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/tsort.rb:210:in block (2 levels) in each_strongly_connected_component_from
from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/tsort.rb:219:in each_strongly_connected_component_from
from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/tsort.rb:209:in block in each_strongly_connected_component_from
from /Library/Ruby/Gems/2.0.0/gems/railties-4.2.4/lib/rails/initializable.rb:44:in each
from /Library/Ruby/Gems/2.0.0/gems/railties-4.2.4/lib/rails/initializable.rb:44:in tsort_each_child
from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/tsort.rb:203:in each_strongly_connected_component_from
from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/tsort.rb:182:in block in each_strongly_connected_component
from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/tsort.rb:180:in each
from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/tsort.rb:180:in each_strongly_connected_component
from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/tsort.rb:148:in tsort_each
from /Library/Ruby/Gems/2.0.0/gems/railties-4.2.4/lib/rails/initializable.rb:54:in run_initializers
from /Library/Ruby/Gems/2.0.0/gems/railties-4.2.4/lib/rails/application.rb:352:in initialize!
from /Users/Rick/Desktop/RevMatchSite/forum_searcher/config/environment.rb:5:in <top (required)>
from /Library/Ruby/Gems/2.0.0/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:274:in require
from /Library/Ruby/Gems/2.0.0/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:274:in block in require
from /Library/Ruby/Gems/2.0.0/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:240:in load_dependency
from /Library/Ruby/Gems/2.0.0/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:274:in require
from /Users/Rick/Desktop/RevMatchSite/forum_searcher/config.ru:3:in block in <main>
from /Library/Ruby/Gems/2.0.0/gems/rack-1.6.4/lib/rack/builder.rb:55:in instance_eval
from /Library/Ruby/Gems/2.0.0/gems/rack-1.6.4/lib/rack/builder.rb:55:in initialize
from /Users/Rick/Desktop/RevMatchSite/forum_searcher/config.ru:in new
from /Users/Rick/Desktop/RevMatchSite/forum_searcher/config.ru:in <main>
from /Library/Ruby/Gems/2.0.0/gems/rack-1.6.4/lib/rack/builder.rb:49:in eval
from /Library/Ruby/Gems/2.0.0/gems/rack-1.6.4/lib/rack/builder.rb:49:in new_from_string
from /Library/Ruby/Gems/2.0.0/gems/rack-1.6.4/lib/rack/builder.rb:40:in parse_file
from /Library/Ruby/Gems/2.0.0/gems/rack-1.6.4/lib/rack/server.rb:299:in build_app_and_options_from_config
from /Library/Ruby/Gems/2.0.0/gems/rack-1.6.4/lib/rack/server.rb:208:in app
from /Library/Ruby/Gems/2.0.0/gems/railties-4.2.4/lib/rails/commands/server.rb:61:in app
from /Library/Ruby/Gems/2.0.0/gems/rack-1.6.4/lib/rack/server.rb:336:in wrapped_app
from /Library/Ruby/Gems/2.0.0/gems/railties-4.2.4/lib/rails/commands/server.rb:139:in log_to_stdout
from /Library/Ruby/Gems/2.0.0/gems/railties-4.2.4/lib/rails/commands/server.rb:78:in start
from /Library/Ruby/Gems/2.0.0/gems/railties-4.2.4/lib/rails/commands/commands_tasks.rb:80:in block in server
from /Library/Ruby/Gems/2.0.0/gems/railties-4.2.4/lib/rails/commands/commands_tasks.rb:75:in tap
from /Library/Ruby/Gems/2.0.0/gems/railties-4.2.4/lib/rails/commands/commands_tasks.rb:75:in server
from /Library/Ruby/Gems/2.0.0/gems/railties-4.2.4/lib/rails/commands/commands_tasks.rb:39:in run_command!
from /Library/Ruby/Gems/2.0.0/gems/railties-4.2.4/lib/rails/commands.rb:17:in <top (required)>
from /Users/Rick/Desktop/RevMatchSite/forum_searcher/bin/rails:8:in require
from /Users/Rick/Desktop/RevMatchSite/forum_searcher/bin/rails:8:in <top (required)>
from /Library/Ruby/Gems/2.0.0/gems/spring-1.4.0/lib/spring/client/rails.rb:28:in load
from /Library/Ruby/Gems/2.0.0/gems/spring-1.4.0/lib/spring/client/rails.rb:28:in call
from /Library/Ruby/Gems/2.0.0/gems/spring-1.4.0/lib/spring/client/command.rb:7:in call
from /Library/Ruby/Gems/2.0.0/gems/spring-1.4.0/lib/spring/client.rb:28:in run
from /Library/Ruby/Gems/2.0.0/gems/spring-1.4.0/bin/spring:49:in <top (required)>
from /Library/Ruby/Gems/2.0.0/gems/spring-1.4.0/lib/spring/binstub.rb:11:in load
from /Library/Ruby/Gems/2.0.0/gems/spring-1.4.0/lib/spring/binstub.rb:11:in <top (required)>
from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:54:in require
from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:54:in require
from /Users/Rick/Desktop/RevMatchSite/forum_searcher/bin/spring:16:in <top (required)>
from bin/rails:3:in load
from bin/rails:3:in <main>
有几个人要求我的development.rb文件。请参阅下文。
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 = false
config.action_mailer.default_url_options = { host: 'localhost', port: 3000}
config.action_mailer.smtp_settings = {
address: ENV.fetch("SMTP_ADDRESS"),
authentication: :plain,
domain: ENV.fetch("SMTP_DOMAIN"),
enable_starttls_auto: true,
password: ENV.fetch("SMTP_PASSWORD"),
port: "587",
user_name: ENV.fetch("SMTP_USERNAME")
}
config.action_mailer.default_url_options = { host: ENV["SMTP_DOMAIN"] }
# config.action_mailer.raise_delivery_errors = true
# config.action_mailer.perform_deliveries = true
# config.action_mailer.delivery_method = :smtp
config.active_record.raise_in_transactional_callbacks = 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
答案 0 :(得分：0)
方法fetch需要存在密钥，只需将其替换为简单的括号：
config.action_mailer.smtp_settings = {
address: ENV["SMTP_ADDRESS"],
authentication: :plain,
domain: ENV["SMTP_DOMAIN"],
enable_starttls_auto: true,
password: ENV["SMTP_PASSWORD"],
port: "587",
user_name: ENV["SMTP_USERNAME"]
}
对于不存在的密钥，它返回nil。当然，如果你不想定义那些配置选项。