Convert string into Array in rails

Question

I send an array from rest client and received it like this: \"[1,2,3,4,5]\"

Now I just want to convert it into Array without using Ruby\'s eval

Answer 1

Perhaps this?

   s.tr('[]', '').split(',').map(&:to_i)

Answer 2

If you want to avoid eval, yet another way:

"[1,2,3,4,5]".scan(/\d+/).map(&:to_i) #assuming you have integer Array as String
#=> [1, 2, 3, 4, 5]

Answer 3

require 'json'

JSON.parse "[1,2,3,4,5]"
  #=> [1, 2, 3, 4, 5] 

JSON.parse "[[1,2],3,4]"
  #=> [[1, 2], 3, 4]