Google表单，保护信息

Question

似乎您不能按组限制对表单的访问，但是当您填充表单时可以检查访问者是否在组中吗？我的工具中有一个从电子表格填充的下拉菜单，我想知道表单在填充该下拉菜单之前是否可以检查谁在尝试访问它。

代码，因为问题需要代码（除了我砍掉了ID以外，所有这些工作都有效）：

// call your form and connect to the drop-down item
  var form = FormApp.openById("1JMfe31jHE4R8StPy");

  var namesList = form.getItemById("18500").asListItem();




// identify the sheet where the data resides needed to populate the drop-down
  var ss = SpreadsheetApp.openById('1zV0cUzUg0mMM');
  var names = ss.getSheetByName("Input");

  // grab the values in the first column of the sheet - use 2 to skip header row 
  var namesValues = names.getRange("F3:F11").getValues();

  var studentNames = [];

  // convert the array ignoring empty cells
  for(var i = 0; i < namesValues.length; i++)    
    if(namesValues[i][0] != "")
      studentNames[i] = namesValues[i][0];

  // populate the drop-down with the array data
  namesList.setChoiceValues(studentNames);

 // grab the values in the first column of the sheet - use 2 to skip header row 
  var namesValues = names.getRange("A29:A45").getValues();

  var studentNames = [];

  // convert the array ignoring empty cells
  for(var i = 0; i < namesValues.length; i++)    
    if(namesValues[i][0] != "")
      studentNames[i] = namesValues[i][0];

  // populate the drop-down with the array data
  namesList = form.getItemById("781187400").asListItem();
  namesList.setChoiceValues(studentNames);


}