Question

I have an array in the following format:

agendaItems = [{“topic”:”blah”, “description:”blah”}, {“topic”:”blah2″, “description”:”blah2″}].

I need to update the values in this array in a handler and handler does not allow global variables to be modified. I know I have to use either CacheService or ScriptProperties. However, I can’t seem to make it work:

If I use CacheService, I get something like this: “[object oject][object object]”

CacheService.getPublicCache.put('agenda', agendaItems);

If I use ScriptProperties, I get something like this: “”[Ljava.lang.Object;@429bd3a7”

ScriptProperties.setProperty('agenda', agendaItems');

Am I doing this wrong or is there a better way? Any advice is appreciated.

Answer 1

The Cache class works with strings. You have to use the Utilities.jsonStringify and Utilities.jsonParse methods to convert the array to a string and vice versa. Here is slightly modified code which I use

this.getData = function(id, cacheKey) {
  var cache = CacheService.getPrivateCache();
  var cachedString = cache.get(cacheKey);
  var lstData;
  if (cachedString == null) {
    lstData = getNotCachedData_(id);
    cache.put(cacheKey, Utilities.jsonStringify(lstData));
  }
  else {
    lstData = Utilities.jsonParse(cachedString);
  }
  return lstData;
}

The ScriptProperties Service also works with strings. It is not obvious due to the not complete documentation, the value parameter has type var and not String, but it is true.