So I have the following: flash[:success] = 'Your payment has completed. Please contact ' + @order.seller.name + ' (mobile: ' + @order.seller.mobile_number + ', email: ' + @order.seller.email + ')' Strangely inside this method, I can't seem to do string interpolation and it prints '@order.seller.name'. So that is a strange issue. But the main thing that puzzles me is should I be replacing + with << here? I read somewhere the performance is better but I really hate seeing << in my code. It just seems ugly and raises my blood pressure for some reason. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To unsubscribe from this group and stop receiving emails from it, send an email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To view this discussion on the web visit https://groups.google.com/d/msgid/rubyonrails-talk/a51cd5f8-6817-43b8-ae75-66336b7bafb1%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.