How can you cut text in Ruby (after a certain number of characters)?

Question

ruby

There is a long text. I want to cut out the rest of the text after 10 characters (and at the end I want to write '...').
How can I do that?

Answer 1

apidock.com/rails/ActionView/Helpers/TextHelper/tr... is the way to go (for rails).
In pure ruby, I think it's not a problem to write such a method yourself.

def truncate(len)
  return "#{self[0...len]}... " if self.length > len
  self
end