How to convert a string into an array?

Question

Ruby on Rails

Hello. How can I convert a string into an array? The example below does not work. Thank you.

require 'json'

str = '[ { :aa => "1" }, { :aa => "2" } ]'
value = JSON.parse( str )

puts str

Answer 1

Invalid JSON at the input, JSON::ParserError at the output, everything seems to be correct.
Try
str = '[ { "aa": "1" }, { "aa": "2" } ]'