How to elegantly symbolize_keys for a 'nested' hash

Question

Consider the following code:

  hash1 = {\"one\" => 1, \"two\" => 2, \"three\" => 3}
  hash2 = hash1.reduce({}){ |h, (k,v)| h.merge(k => hash1) }
  ha         


        

Answer 1

In rails you can create HashWithIndifferentAccess class. Create an instance of this class passing your hash to its constructor and then access it with keys that are symbols or strings (like params of Controller's Actions):

hash = {'a' => {'b' => [{c: 3}]}}

hash = hash.with_indifferent_access
# equal to:
# hash = ActiveSupport::HashWithIndifferentAccess.new(hash)

hash[:a][:b][0][:c]

=> 3