In Google Apps Script action handler, how to get value of a selection input?

Question

Documentation shows examples of creating a SelectionInput item: https://developers.google.com/apps-script/reference/card-service/selection-input

Question: How to read value of SelectionInput in an action handler? Like:

var dropdown = CardService.newSelectionInput()
  .setType(CardService.SelectionInputType.DROPDOWN)
  .setTitle("Status")
  .setFieldName("dd_status")
  .addItem("A", 1, status == 1)
  .addItem("B", 2, status == 2)
  .addItem("C", 3, status == 3)
  .setOnChangeAction(CardService.newAction()
  .setFunctionName("handleStatusDropdownChange").setParameters({'thread_id': thread_id}));

Now, how to access dd_status in handleStatusDropdownChange? It does not seem to appear in parameters, when the handler is defined like:

function handleStatusDropdownChange(e) {
    var parameters = e.parameters;
}

Where is it?

This one does: Logger.log(JSON.stringify(e)); I know. This seems to be somehow ureliable. I have tried it before, switched to strackdriver logging that does not seem to work for me and now back to Logger and voila! — Marcin, Jan 19 '19 at 21:48
@Marcin Because others tried to create others kinds of script and the cardservice only works for gmail addons. — Rubén, Jan 19 '19 at 22:47

score 1 · Answer 1 · answered Jul 27 '20 at 20:45

All the input values are being held inside the event object passed to the handler function.

function handleStatusDropdownChange(e) {
    var dd_status = e.commonEventObject.formInputs.dd_status[""].stringInputs.value[0];
}

Notice that e.formInput.dd_status will also work, but the docs states its deprecated.

For more info: https://developers.google.com/gsuite/add-ons/concepts/event-objects#common_event_object Under "Common event object" title.

In Google Apps Script action handler, how to get value of a selection input?

1 Answers1

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