1

所以我已经设置了我的数据库并尝试为我制作的应用程序生成一些脚手架。我得到这个错误，我有点困惑。有什么建议吗？谢谢！

rails generate scaffold product title:string description:text image_url:string
/Users/Cameron/.rvm/rubies/ruby-1.9.3-p392/lib/ruby/1.9.1/psych.rb:203:in `parse': (<unknown>): could not find expected ':' while scanning a simple key at line 18 column 3 (Psych::SyntaxError)
from /Users/Cameron/.rvm/rubies/ruby-1.9.3-p392/lib/ruby/1.9.1/psych.rb:203:in `parse_stream'
from /Users/Cameron/.rvm/rubies/ruby-1.9.3-p392/lib/ruby/1.9.1/psych.rb:151:in `parse'
from /Users/Cameron/.rvm/rubies/ruby-1.9.3-p392/lib/ruby/1.9.1/psych.rb:127:in `load'
from /Users/Cameron/.rvm/gems/ruby-1.9.3-p392/gems/railties-3.2.13/lib/rails/application/configuration.rb:115:in `database_configuration'
from /Users/Cameron/.rvm/gems/ruby-1.9.3-p392/gems/activerecord-3.2.13/lib/active_record/railtie.rb:78:in `block (2 levels) in <class:Railtie>'
from /Users/Cameron/.rvm/gems/ruby-1.9.3-p392/gems/activesupport-3.2.13/lib/active_support/lazy_load_hooks.rb:36:in `instance_eval'
from /Users/Cameron/.rvm/gems/ruby-1.9.3-p392/gems/activesupport-3.2.13/lib/active_support/lazy_load_hooks.rb:36:in `execute_hook'
from /Users/Cameron/.rvm/gems/ruby-1.9.3-p392/gems/activesupport-3.2.13/lib/active_support/lazy_load_hooks.rb:43:in `block in run_load_hooks'
from /Users/Cameron/.rvm/gems/ruby-1.9.3-p392/gems/activesupport-3.2.13/lib/active_support/lazy_load_hooks.rb:42:in `each'
from /Users/Cameron/.rvm/gems/ruby-1.9.3-p392/gems/activesupport-3.2.13/lib/active_support/lazy_load_hooks.rb:42:in `run_load_hooks'
from /Users/Cameron/.rvm/gems/ruby-1.9.3-p392/gems/activerecord-3.2.13/lib/active_record/base.rb:720:in `<top (required)>'
from /Users/Cameron/.rvm/gems/ruby-1.9.3-p392/gems/activerecord-3.2.13/lib/active_record/railtie.rb:88:in `block in <class:Railtie>'
from /Users/Cameron/.rvm/gems/ruby-1.9.3-p392/gems/railties-3.2.13/lib/rails/initializable.rb:30:in `instance_exec'
from /Users/Cameron/.rvm/gems/ruby-1.9.3-p392/gems/railties-3.2.13/lib/rails/initializable.rb:30:in `run'
from /Users/Cameron/.rvm/gems/ruby-1.9.3-p392/gems/railties-3.2.13/lib/rails/initializable.rb:55:in `block in run_initializers'
from /Users/Cameron/.rvm/gems/ruby-1.9.3-p392/gems/railties-3.2.13/lib/rails/initializable.rb:54:in `each'
from /Users/Cameron/.rvm/gems/ruby-1.9.3-p392/gems/railties-3.2.13/lib/rails/initializable.rb:54:in `run_initializers'
from /Users/Cameron/.rvm/gems/ruby-1.9.3-p392/gems/railties-3.2.13/lib/rails/application.rb:136:in `initialize!'
from /Users/Cameron/.rvm/gems/ruby-1.9.3-p392/gems/railties-3.2.13/lib/rails/railtie/configurable.rb:30:in `method_missing'
from /Users/Cameron/depot/config/environment.rb:5:in `<top (required)>'
from /Users/Cameron/.rvm/gems/ruby-1.9.3-p392/gems/railties-3.2.13/lib/rails/application.rb:103:in `require'
from /Users/Cameron/.rvm/gems/ruby-1.9.3-p392/gems/railties-3.2.13/lib/rails/application.rb:103:in `require_environment!'
from /Users/Cameron/.rvm/gems/ruby-1.9.3-p392/gems/railties-3.2.13/lib/rails/commands.rb:25:in `<top (required)>'
from script/rails:6:in `require'
from script/rails:6:in `<main>'
4

1 回答 1

4

这可能是您config/database.yml文件中的问题。错误来自 Psych，它是 Ruby 的 YAML 解析引擎。我不知道在 a 期间读取的任何其他 YAML 文件，我可以通过在我的文件中rails g scaffold引入一个错字来重现该失败。database.yml

有一些在线 YAML 验证器，您可以将文件粘贴到其中以帮助调试它。或者如果您找不到问题，请将其添加到上面的问题中。

于 2013-03-24T17:15:02.357 回答