Short Ruby Case Statement using include? Will Not Work

Question

I have the following code with a small bug in it, the case statement returns the value "other" even though the first "when" statement evaluates true and should return "boats".

I've been been looking at this for ages, must be something small.

CATEGORIES = {:boats  => [1, 2, 3, 4, 5, 6],
              :houses => [7, 8, 9, 10],
              :other  => [11,12,13,14,15,16]
             }

category_id = 1

category = case category_id
  when CATEGORY_CLASSES[:boats].include?(category_id); "boats"
  when CATEGORY_CLASSES[:houses].include?(category_id); "houses"
  else "other"
end

Thanks!

Answer 1

You can expand array in when statement as follows:

category = case category_id
  when *CATEGORY_CLASSES[:boats]; "boats"
  when *CATEGORY_CLASSES[:houses]; "houses"
  else "other"
end