无法在rails上为ruby创建数据库
我刚刚开始在轨道上的红宝石，我仍然忙着设置一切正在运行..我遇到的问题是，它一直说，mysql2不是捆绑的一部分..我已经Google了它显然，但解决方案没有似乎工作
sudo gem install mysql2
等等..
我得到的东西是
$ rake db：创建rake中止！ 请安装mysql2适配器： gem install activerecord-mysql2-adapter （mysql2不是该包的一部分，将它添加到Gemfile中）/Library/Ruby/Gems/1.8/gems/bundler-1.3.2/lib/bundler/rubygems_integration .rb：214：in gem' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.12/lib/active_record/connection_adapters/mysql2_adapter.rb:3 /Library/Ruby/Gems/1.8/gems/activesupport-3.2.12/lib/active_support/dependencies.rb:251:in Ruby gem' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.12/lib/active_record/connection_adapters/mysql2_adapter.rb:3 /Library/Ruby/Gems/1.8/gems/activesupport-3.2.12/lib/active_support/dependencies.rb:251:in mysql2_adapter.rb:3 gem' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.12/lib/active_record/connection_adapters/mysql2_adapter.rb:3 /Library/Ruby/Gems/1.8/gems/activesupport-3.2.12/lib/active_support/dependencies.rb:251:in require' /Library/Ruby/Gems/1.8/gems/activesupport-3.2.12/lib/active_support/dependencies.rb:236:in gem' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.12/lib/active_record/connection_adapters/mysql2_adapter.rb:3 /Library/Ruby/Gems/1.8/gems/activesupport-3.2.12/lib/active_support/dependencies.rb:251:in require' /Library/Ruby/Gems/1.8/gems/activesupport-3.2.12/lib/active_support/dependencies.rb:236:in load_dependency'/Library/Ruby/Gems/1.8/gems/ require' /Library/Ruby/Gems/1.8/gems/activesupport-3.2.12/lib/active_support/dependencies.rb:236:in 3.2.12/lib/active_support/dependencies.rb ：251：in require' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.12/lib/active_record/connection_adapters/abstract/connection_specification.rb:50:in Library require' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.12/lib/active_record/connection_adapters/abstract/connection_specification.rb:50:in Ruby require' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.12/lib/active_record/connection_adapters/abstract/connection_specification.rb:50:in Gems require' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.12/lib/active_record/connection_adapters/abstract/connection_specification.rb:50:in 1.8 require' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.12/lib/active_record/connection_adapters/abstract/connection_specification.rb:50:in gems require' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.12/lib/active_record/connection_adapters/abstract/connection_specification.rb:50:in activerecord-3.2.12 require' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.12/lib/active_record/connection_adapters/abstract/connection_specification.rb:50:in lib require' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.12/lib/active_record/connection_adapters/abstract/connection_specification.rb:50:in active_record require' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.12/lib/active_record/connection_adapters/abstract/connection_specification.rb:50:in connection_adapters require' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.12/lib/active_record/connection_adapters/abstract/connection_specification.rb:50:in abstract require' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.12/lib/active_record/connection_adapters/abstract/connection_specification.rb:50:in connection_specification.rb:50:in resolve_hash_connection'/Library require' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.12/lib/active_record/connection_adapters/abstract/connection_specification.rb:50:in Ruby require' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.12/lib/active_record/connection_adapters/abstract/connection_specification.rb:50:in Gems require' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.12/lib/active_record/connection_adapters/abstract/connection_specification.rb:50:in 1.8/gems /activerecord-3.2.12/lib/active_record/connection_adapters/abstract/connection_specif ication.rb：29：in spec' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.12/lib/active_record/connection_adapters/abstract/connection_specification.rb:130:in '/Library/Ruby/Gems/1.8/gems/activerecord-3.2.12/lib/active_record/connection_adapters/abstract/connection_specification.rb:130:in establish_connection'/ Library / Ruby / Gems / 1.8 / gems / activerecord-3.2.12 / lib / active_record / railties / databases.rake：90：in create_database' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.12/lib/active_record/railties/databases.rake:62 /Library/Ruby/Gems/1.8/gems/activerecord-3.2.12/lib/active_record/railties/databases.rake:62:in /Library/Ruby/Gems/1.8/gems/activerecord-3.2.12/lib/active_record/railties/databases create_database' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.12/lib/active_record/railties/databases.rake:62 /Library/Ruby/Gems/1.8/gems/activerecord-3.2.12/lib/active_record/railties/databases.rake:62:in每个'/Library/Ruby/Gems/1.8/gems/activerecord-3.2。 12 / lib / active_record / railties / databases.rake：62任务：TOP => db：create（通过使用--trace运行任务来查看完整跟踪）
这里的任何人都知道我的解决方案？ （ps我看到很多人说它必须被添加到gem配置中，但是怎么做？）
你应该确保你的Gemfile （位于你的项目的根目录）包括在内
gem 'mysql2'
然后运行bundle install来安装它。
我相信activerecord-mysql2-adapter gem作为依赖项安装，但您也可以添加
gem 'activerecord-mysql2-adapter'
如果它仍然要求。
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