database.yml和引用无效

Question

我们刚刚将虚拟机升级到我认为相同的ruby配置(通过RVM ...... Ruby 1.9.2,Rails 3.0.7,DataMapper 1.1.0).最大的区别是我们从MySQL 5.0到5.1.

出于某种原因,在我们的旧虚拟机上工作的完全相同的代码/ database.yml现在在我们尝试连接到数据库时的新代码上失败了.

问题是这个YAML:

mysql_defaults: &mysql_defaults
  adapter: mysql
  encoding: UTF-8
  username: user
  password: pass
  host: localhost

development:
  <<: *mysql_defaults
  database: devdb

production:
  <<: *mysql_defaults
  database: productiondb
  host: master.db.site.com

只是扩展到:

  "mysql_defaults" => {
    "adapter"=>"mysql",
    "encoding"=>"UTF-8",
    "username"=>"user",
    "password"=>"pass",
    "host"=>"localhost"
  },
  "development" => {
    "adapter"=>"mysql",
    "encoding"=>"UTF-8",
    "username"=>"user",
    "password"=>"pass",
    "host"=>"localhost"
  },
  "production" => {
    "adapter"=>"mysql",
    "encoding"=>"UTF-8",
    "username"=>"user",
    "password"=>"pass",
    "host"=>"localhost"
  }

代替:

  "mysql_defaults" => {
    "adapter"=>"mysql",
    "encoding"=>"UTF-8",
    "username"=>"user",
    "password"=>"pass",
    "host"=>"localhost"
  },
  "development" => {
    "adapter"=>"mysql",
    "encoding"=>"UTF-8",
    "username"=>"user",
    "password"=>"pass",
    "host"=>"localhost",
    "database"=>"devdb"
  },
  "production" => {
    "adapter"=>"mysql",
    "encoding"=>"UTF-8",
    "username"=>"user",
    "password"=>"pass",
    "host"=>"master.db.site.com",
    "database"=>"productiondb"
  }

以前有人经历过吗？

根据Gemfile.lock(我删除它并再次运行bundle install,只是为了理智),所有已安装的依赖项都是相同的(即Gemfile.lock在旧设置和新设置之间不区分).database.yml也不是.

Answer 1

Psych是新的YAML解析器,它可能更好但不能合并散列键.

这应该有助于 http://pivotallabs.com/users/mkocher/blog/articles/1692-yaml-psych-and-ruby-1-9-2-p180-here-there-be-dragons