Count vowels in a string with ruby

Question

My objective is to return the number of vowels in a given string. I've tried this code:

def count_vowels(string)
  vowels = ['a', 'e', 'i', 'o', 'u']
  chars_ary = string.split(//)
  ary_with_vowels = chars_ary.take_while {|letter| vowels.include?(letter)}
  return ary_with_vowels.length
end

and it doesn't pass the majority of test cases. I understand that there are multiple other ways to solve this problem, but I want to solve it using the code that I provided.

Can someone give me some insight as to why this isn't working?

Answer 1

This way is easier:

 def count_vowels(string)
   string.count('aeiou')
 end