How to set up Russian language in Ruby on Rails?

Question

Ruby on Rails

When entering a type string through the rails console,
g = "Привет"
an invalid multibyte char (UTF-8) error pops up.
Through the site, too, Russian words are not added. How can I fix this? I put i18n, but for some reason nothing has changed. Tell me please.

Answer 1

# encoding: utf-8
at the very beginning of each file that uses Russian characters

Answer 2

When starting the application, set the environment variable RUBYOPT=-Ku
RUBYOPT=-Ku

Answer 3

What version of ruby?