问题
Due to change in authentication procedure I need to reset all sessions for all users, how do I do this in Rails 4?
回答1:
You can change the secret_key your app uses to encrypt cookies in config/initializers/secret_token.rb or you can change the name of the cookie key in config/initializers/session_store.rb either of these changes will invalidate all sessions and require them to be recreated (login again)
来源：https://stackoverflow.com/questions/21467181/possible-to-reset-sessions-for-all-users