Search for Files and Team Drives, drive 15 - Google App Maker https://cafe.naver.com/eojji/349

SearchPageScript.js

function onDropdownAttach(widget) {
  var props = app.currentPage.properties;
  google.script.run.withSuccessHandler( function(list) {
    if(list && list.length > 1) {
      var listLength = list.length;
      for(var i = 0; i < listLength; i++) { 
        var drive = list[i];
        if (drive.id == props.TeamDriveId) {
          widget.value = drive.id;
        }
        widget.options.push(drive.id); 
        widget.names.push(drive.name);
      }
    }
  }).getHtmlSelectTeamDriveList();
}  

TeamDriveScript.js

function getHtmlSelectTeamDriveList() {
  var myDriveId = DriveApp.getRootFolder().getId();
  var drive = {
    id: myDriveId,
    name: 'My Drive'
  };
  var list = [drive];
  var pageToken;
  var optionalArgs = {
    maxResults : 100,
    pageToken : pageToken
  };        
  
  var teamDriveList = Drive.Teamdrives.list(optionalArgs);        
  if (!teamDriveList || !teamDriveList.items || teamDriveList.items.length <= 0) {
    return list;        
  }
  
  for (var i = 0; i < teamDriveList.items.length; i++) {
    var teamDrive = teamDriveList.items[i];
    drive = {
      id: teamDrive.id,
      name: teamDrive.name
    };      
    list.push(drive);
  }
  
  return list;      
}