从Rails 4.2.10升级到Rails5.1.4将导致下面的错误消息。我不知道如何解决依赖关系。红宝石版本为2.5.1。Rails 4.2.10在没有问题的情况下运行,bundle upgrade运行时不返回任何错误。Bundler could not find compatible versions for gem "activemodel":
In Gemfile:
我刚刚将我的rails从4.2更新到5.1.4,我成功地更新了rails版本和gem依赖项,但在运行服务器后,我收到以下错误。Bundler::GemRequireError: There was an error while trying to load the gem 'activeadmin'.Gem Load Error is: undefined method `alias_method
我正在尝试部署一个基于Ruby on Rails的Heroku应用程序,但遇到了一些问题。虽然这些问题在过去的部署中都不存在,但Heroku在部署后随机删除了pg gem。'rails/rails'# User rails12 factor for heroku's native ruby suppo
总的来说,我对开发非常陌生,并且正在学习Michael的rails书籍。We suggest you upgrade to the latest version of Bundler by running `gem install bundler`.rails5.1.4 Bundle complete!We suggest you upgrade to the latest v