我刚刚在轨道上启动ruby并且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不是一个包的一部分..我用Google搜索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不是捆绑包的一部分 . 将其添加到Gemfile . ）/ 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 .12 / lib / active_support / dependencies.rb：251：inrequire'/ Library / Ruby / Gems / 1.8 / gems / activesupport-3.2.12 / lib / active_support / dependis.rb：251：in require'/ Library / Ruby / Gems / 1.8 / gems / activesupport-3.2.12 / lib / active_support / dependencies.rb:236:inload_dependency'/Library/Ruby/Gems/1.8/gems/activesupport-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:inresolve_hash_connection'/Library/Ruby/Gems/1.8/gems/activerecord- 3.2.12 / LIB / active_record / connection_adapters /抽象/ connection_specifica tion.rb：29：在spec'/Library/Ruby/Gems/1.8/gems/activerecord-3.2.12/lib/active_record/connection_adapters/abstract/connection_specification.rb:130:inestablish_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:ineach'/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）
这里有人知道我的解决方案吗？ （p.s.我看到很多人说它必须添加到gem配置但是如何？）
1 回答
您应确保
Gemfile（位于项目的根目录中）包含然后运行
bundle install进行安装 .我相信
activerecord-mysql2-adaptergem是作为依赖项安装的，但您也可以添加如果仍然要求它 .