GAS e.parameter undefined, uploadWidget won't setName

Question

I\'m working on an answer for another question found here. I have modified a different tutorial script from here, but I\'m having an issue that the e.parameter for the fileUplo

Answer 1

File upload in forms needs a doPost function to work, this is not an option ;)

In such a structure (doGet/doPost) you don't have to define a handler nor a callBackElement, the formPanel is supposed to include all its elements automatically.

So I tried your modified code and still get one major issue with the numFiles value that is on the table tag : I can't get it...

If I replace it with a fixed value then everything works nicely, I get the files in the right folder.

So this answer is not a good answer because it doesn't bring a full solution but at least it reduces its initial scope to that point : how to get this #@!#! numFiles value ?

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EDIT : Found the issue : table doesn't support setName method so its value can't be retrieved in the submitHandler. We should use another widget to hold that value.

new working Code below : (I used a textBox as a "hidden" widget for test only, please replace by a hiddenWidget when in production)

function doGet() {
  var app = UiApp.createApplication();
  var panel = app.createVerticalPanel();
  var formPanel = app.createFormPanel();
  var folderLabel = app.createLabel('Folder Name (temp placeholder to remember to use .getFolderById(folderId) to place in specific folder)');
  var folderNameTextBox = app.createTextBox().setId('folderName').setName('folderName');
  var filesLabel = app.createLabel('Add Files to Upload');
  var table = app.createFlexTable().setId('table').setTag('0'); //Here tag will count the number of members
  //Write the header for the table
  var headerArray = ['File(s)'];
  for(var i=0; i