ruby-2.1.5

I am using ruby 2.1.5, facing some problem with ternary operator Syntax error request.xhr? ? render :json => "success" : redirect_to index_url working request.xhr? ? render(:json => "success") : redirect_to(index_url) Can some please explain How its works and why above one not working? Thanks in advance When you use the shorthand syntax (without brackets), ruby expects everything until the end of the line to be parameters to your method. So your "syntax error" example is understood as: request.xhr? ? render(:json => "success" : redirect_to index_url) which is obviously wrong. 来源： https:/