config.action_dispatch.best_standards_support has been removed from Rails 4.1, to force IE to do it’s best just add this line to your config/application.rb:
config.action_dispatch.default_headers['X-UA-Compatible'] = 'IE=Edge,chrome=1'
Mikamai developers blog
config.action_dispatch.best_standards_support has been removed from Rails 4.1, to force IE to do it’s best just add this line to your config/application.rb:
config.action_dispatch.default_headers['X-UA-Compatible'] = 'IE=Edge,chrome=1'