升级rails后未定义的方法“ alias_method_chain”

Question

I just updated my rails from 4.2 to 5.1.4, I successfully update the rails version and gem dependencies but after running server I am getting following error.

Bundler::GemRequireError: There was an error while trying to load the gem 'activeadmin'.
Gem Load Error is: undefined method `alias_method_chain' for  #<Class:ActiveRecord::Associations::JoinDependency>
Did you mean?  alias_method

Any body help me what I am missing here and why I am getting this error.

Answer 1

在rails 5中不推荐使用alias_method_chain 。尝试使用bundle update activeadmin更新activeadmin gem。