module ActiveSupport::JSON

def decode(json, options = {})

=> {"team" => "rails", "players" => "36"}
ActiveSupport::JSON.decode("{\"team\":\"rails\",\"players\":\"36\"}")

See http://www.json.org for more info.
Parses a JSON string (JavaScript Object Notation) into a hash. 
def decode(json, options = {})
  if options.present?
    raise ArgumentError, "In Rails 4.1, ActiveSupport::JSON.decode no longer " \
      "accepts an options hash for MultiJSON. MultiJSON reached its end of life " \
      "and has been removed."
  end
  data = ::JSON.parse(json, quirks_mode: true)
  if ActiveSupport.parse_json_times
    convert_dates_from(data)
  else
    data
  end
end