这是我尝试启动rails服务器时显示的错误
我使用rails 4.2.4.，ruby版本是2.2.1p85。
我是rails的新手，所以告诉我该怎么做
/home/techbirds/Downloads/boxroom-master/config/environments/development.rb:42:in `block in <top (required)>': undefined local variable or method `settings' for #<Boxroom::Application:0x00000002785a80> (NameError)
from /home/techbirds/.rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/railtie.rb:210:in `instance_eval'
from /home/techbirds/.rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/railtie.rb:210:in `configure'
from /home/techbirds/Downloads/boxroom-master/config/environments/development.rb:1:in `<top (required)>'
from /home/techbirds/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:274:in `require'
from /home/techbirds/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:274:in `block in require'
from /home/techbirds/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:240:in `load_dependency'
from /home/techbirds/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:274:in `require'
from /home/techbirds/.rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/engine.rb:598:in `block (2 levels) in <class:Engine>'
from /home/techbirds/.rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/engine.rb:597:in `each'
from /home/techbirds/.rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/engine.rb:597:in `block in <class:Engine>'
from /home/techbirds/.rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/initializable.rb:30:in `instance_exec'
from /home/techbirds/.rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/initializable.rb:30:in `run'
from /home/techbirds/.rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/initializable.rb:55:in `block in run_initializers'
from /home/techbirds/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/tsort.rb:226:in `block in tsort_each'
from /home/techbirds/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/tsort.rb:348:in `block (2 levels) in each_strongly_connected_component'
from /home/techbirds/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/tsort.rb:420:in `block (2 levels) in each_strongly_connected_component_from'
from /home/techbirds/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/tsort.rb:429:in `each_strongly_connected_component_from'
from /home/techbirds/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/tsort.rb:419:in `block in each_strongly_connected_component_from'
from /home/techbirds/.rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/initializable.rb:44:in `each'
from /home/techbirds/.rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/initializable.rb:44:in `tsort_each_child'
from /home/techbirds/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/tsort.rb:413:in `call'
from /home/techbirds/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/tsort.rb:413:in `each_strongly_connected_component_from'
from /home/techbirds/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/tsort.rb:347:in `block in each_strongly_connected_component'
from /home/techbirds/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/tsort.rb:345:in `each'
from /home/techbirds/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/tsort.rb:345:in `call'
from /home/techbirds/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/tsort.rb:345:in `each_strongly_connected_component'
from /home/techbirds/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/tsort.rb:224:in `tsort_each'
from /home/techbirds/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/tsort.rb:203:in `tsort_each'
from /home/techbirds/.rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/initializable.rb:54:in `run_initializers'
from /home/techbirds/.rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/application.rb:352:in `initialize!'
from /home/techbirds/Downloads/boxroom-master/config/environment.rb:5:in `<top (required)>'
from /home/techbirds/Downloads/boxroom-master/config.ru:3:in `require'
from /home/techbirds/Downloads/boxroom-master/config.ru:3:in `block in <main>'
from /home/techbirds/.rvm/gems/ruby-2.2.1/gems/rack-1.6.4/lib/rack/builder.rb:55:in `instance_eval'
from /home/techbirds/.rvm/gems/ruby-2.2.1/gems/rack-1.6.4/lib/rack/builder.rb:55:in `initialize'
from /home/techbirds/Downloads/boxroom-master/config.ru:in `new'
from /home/techbirds/Downloads/boxroom-master/config.ru:in `<main>'
from /home/techbirds/.rvm/gems/ruby-2.2.1/gems/rack-1.6.4/lib/rack/builder.rb:49:in `eval'
from /home/techbirds/.rvm/gems/ruby-2.2.1/gems/rack-1.6.4/lib/rack/builder.rb:49:in `new_from_string'
from /home/techbirds/.rvm/gems/ruby-2.2.1/gems/rack-1.6.4/lib/rack/builder.rb:40:in `parse_file'
from /home/techbirds/.rvm/gems/ruby-2.2.1/gems/rack-1.6.4/lib/rack/server.rb:299:in `build_app_and_options_from_config'
from /home/techbirds/.rvm/gems/ruby-2.2.1/gems/rack-1.6.4/lib/rack/server.rb:208:in `app'
from /home/techbirds/.rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/commands/server.rb:61:in `app'
from /home/techbirds/.rvm/gems/ruby-2.2.1/gems/rack-1.6.4/lib/rack/server.rb:336:in `wrapped_app'
from /home/techbirds/.rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/commands/server.rb:139:in `log_to_stdout'
from /home/techbirds/.rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/commands/server.rb:78:in `start'
from /home/techbirds/.rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/commands/commands_tasks.rb:80:in `block in server'
from /home/techbirds/.rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/commands/commands_tasks.rb:75:in `tap'
from /home/techbirds/.rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/commands/commands_tasks.rb:75:in `server'
from /home/techbirds/.rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/commands/commands_tasks.rb:39:in `run_command!'
from /home/techbirds/.rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/commands.rb:17:in `<top (required)>'
from bin/rails:8:in `require'
from bin/rails:8:in `<main>'
答案 0 :(得分：0)
用这个
替换你的development.rbRails.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 = true
# 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
config.action_mailer.default_url_options = {host: "localhost:3000"}
config.action_mailer.perform_deliveries = true
config.action_mailer.smtp_settings = {
:address => "",
:port => 587,
# :domain => ".com",
:user_name => "your user name",
:password => "your password",
:authentication => :plain,
# :enable_starttls_auto => true
}
# Raises error for missing translations
# config.action_view.raise_on_missing_translations = true
end
gmail设置的示例代码
config.action_mailer.smtp_settings = {
:address => "smtp.gmail.com",
:port => "587",
:domain => "mydomain.net",
:user_name => "mygmailusername@gmail.com",
:password => "myGmailPassword",
:authentication => "plain",
:enable_starttls_auto => true
}