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我想在我想在heroku上部署的rails应用程序中使用datamapper。因此我需要将 dm-postgres-adapter 添加到我的 Gemfile 中。有没有办法让heroku安装这个gem而不在本地安装postgreSQL?
使用“组”将其上下文限制为生产。
group :production do gem "gemname" end