使用 ROR 应用程序设置 mysql 数据库时出现 ArgumentError

Question

我之前在 Stack Overflow 上查找过几个问题，但无法通过我的查询来识别其中的任何一个。我想用我的 RoR App 建立一个 mysql 数据库，但出现以下错误：-

=> Booting WEBrick
=> Rails 2.3.14 application starting on h t t p: / / localhost:3000
/usr/lib/ruby/1.8/yaml.rb:133:in `load': syntax error on line 6, col 2: `  host: localhost' (ArgumentError)
    from /usr/lib/ruby/1.8/yaml.rb:133:in `load'
    from /home/sumit/Sites/world_geography/config/../vendor/rails/railties/lib/initializer.rb:926:in `database_configuration'
    from /home/sumit/Sites/world_geography/config/../vendor/rails/railties/lib/initializer.rb:437:in `initialize_database'
    from /home/sumit/Sites/world_geography/config/../vendor/rails/railties/lib/initializer.rb:141:in `process'
    from /home/sumit/Sites/world_geography/config/../vendor/rails/railties/lib/initializer.rb:113:in `send'
    from /home/sumit/Sites/world_geography/config/../vendor/rails/railties/lib/initializer.rb:113:in `run'
    from /home/sumit/Sites/world_geography/config/environment.rb:9
    from /usr/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:36:in `gem_original_require'
    from /usr/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:36:in `require'
    from /usr/lib/ruby/vendor_ruby/active_support/dependencies.rb:182:in `require'
    from /usr/lib/ruby/vendor_ruby/active_support/dependencies.rb:547:in `new_constants_in'
    from /usr/lib/ruby/vendor_ruby/active_support/dependencies.rb:182:in `require'
    from /home/sumit/Sites/world_geography/vendor/rails/railties/lib/commands/server.rb:84
    from /usr/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:36:in `gem_original_require'
    from /usr/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:36:in `require'
    from script/server:3
//////////////////////////////////////////////////////////////////////////////////////
ruby -v :-> ruby 1.8.7
rails -v :-> 2.3.14

Also my database.yml file :->

development:
  adapter: mysql
  database: world_data_dev
  username:root
  host: local_host
  port: 3000
  pool: 5
  timeout: 5000


# Warning: The database defined as "test" will be erased and
# re-generated from your development database when you run "rake".
# Do not set this db to the same as development or production.
test:
  adapter: mysql
  database: world_data_test
  username:root
  host: localhost
  port: 3000
  pool: 5
  timeout: 5000

production:
  adapter: mysql
  database: world_data_prod
  username:root
  host: localhost
  port: 3000
  pool: 5
  timeout: 5000

Thanks!

Answer 1

在你的 database.yml 文件中，在用户名后面加上空格：

development:
  adapter: mysql
  database: world_data_dev
  username: root
  host: local_host
  port: 3000
  pool: 5
  timeout: 5000