RUBY - connect class?

Question

ruby

I started learning Ruby - I mastered the base a little, tutorials.
I wrote a script - it works. I added a file with a class next to the script, how to use the class in my script?
Since when I try to use it I get an error:
`require': cannot load such file -- topic
The code itself looks like this:

require 'topic'
.....
topic = Topic.new
.....

The topic.rb file is next to the executable file. I run the command:
ruby app.rb

Answer 1

Use require_relative
require_relative 'topic'