Google apps script 提交表单后如何修改谷歌表单？我收到；未能编辑表单。”；

我让触发器工作，我可以向表单中添加项。但是，如果我试图以任何方式更改项目的选择，我会在.setChoices行收到“编辑表单失败”错误

var form = FormApp.openById("<your form id>");
var mci = form.getItems(FormApp.ItemType.MULTIPLE_CHOICE);
  var item = mci[0].asMultipleChoiceItem();
  Logger.log(item.getChoices()[0].getValue());
  item.setChoices([
     item.createChoice('Cats'),
     item.createChoice('Dogs')
 ]);

及

同样的结果

目标是：

---

如果受访者在多项选择项中输入了“其他”选项，请将该选项添加到下一位受访者的选项列表中。

我确信，使用谷歌表单无法做到这一点

---

仍然可以使用Google应用程序脚本创建您自己的用户界面，并与您自己的数据存储库交互。

我能够使以下代码正常工作，尽管有一个独立的脚本，而不是容器绑定的脚本。这也必须手动运行，而不是通过触发器

这样的黑客可以很容易地修改和触发，使其每分钟运行一次，将已知电子表格中的选项添加到已知表单中

此代码需要包含多项选择对象的上一个表单，其ID插入变量ID中

function AddNewChoiceBug() {
  //choice variable needs input before running.

  try{
    //get form via ID
    var id = '';  //insert form ID here
    var form = FormApp.openById(id);
    Logger.log( 'Opening form: %s', id );

    //get all multiple choice objects in given form
    var MultChoice = form.getItems(FormApp.ItemType.MULTIPLE_CHOICE);

    //input choice to all multiple choice objects
    var choice = 'new choice'; //insert new choice here
    Logger.log( 'New choice: %s', choice );

    //Iterate through Multiple Choice objects in opening form
    for( i=0; i< MultChoice.length; i++ ){

      Logger.log( 'Multiple Choice Question titled, %s', MultChoice[i].getTitle() );

      var knownChoices = MultChoice[i].asMultipleChoiceItem().getChoices();
      //Iterate through Multiple Choice Options for each object

      if( catchMultChoices( knownChoices, choice ) != null ){
        knownChoices.push( MultChoice[i].asMultipleChoiceItem().createChoice(choice) );

//The following creates an error:
        MultChoice[i].asMultipleChoiceItem().setChoices( knownChoices );
      }
    }
  }
  catch (e){
    Logger.log( e );
  }
}

function catchMultChoices(kc, c) {
  for( j=0; j< kc.length; j++ ){

    //catch choices already in MultChoice[i]
    if( kc[j].getValue() === c ){
      Logger.log( '  choice %s already a choice', c);
      return null;
    }
  }

  //choice not in MultChoice[i]!
  Logger.log( '  choice %s not in question!', c);
  return c;
}

函数AddNewChoiceBug（）{
//选择变量在运行前需要输入。
试一试{
//通过ID获取表单
变量id=“”；//在此处插入表单id
var form=FormApp.openById（id）；
Logger.log（'期初表单：%s'，id）；
//获取给定形式的所有多项选择对象
var MultChoice=form.getItems（FormApp.ItemType.MULTIPLE\u-CHOICE）；
//将选项输入到所有多项选择对象
var choice='new choice'；//在此处插入新选项
Logger.log（'新选项：%s'，选项）；
//以开始形式遍历多项选择对象
对于（i=0；i

var choices = [];
choices.push(item.createChoice('Cats'));
choices.push(item.createChoice('Dogs'));
item.setChoices(choices);

function AddNewChoiceBug() {
  //choice variable needs input before running.

  try{
    //get form via ID
    var id = '';  //insert form ID here
    var form = FormApp.openById(id);
    Logger.log( 'Opening form: %s', id );

    //get all multiple choice objects in given form
    var MultChoice = form.getItems(FormApp.ItemType.MULTIPLE_CHOICE);

    //input choice to all multiple choice objects
    var choice = 'new choice'; //insert new choice here
    Logger.log( 'New choice: %s', choice );

    //Iterate through Multiple Choice objects in opening form
    for( i=0; i< MultChoice.length; i++ ){

      Logger.log( 'Multiple Choice Question titled, %s', MultChoice[i].getTitle() );

      var knownChoices = MultChoice[i].asMultipleChoiceItem().getChoices();
      //Iterate through Multiple Choice Options for each object

      if( catchMultChoices( knownChoices, choice ) != null ){
        knownChoices.push( MultChoice[i].asMultipleChoiceItem().createChoice(choice) );

//The following creates an error:
        MultChoice[i].asMultipleChoiceItem().setChoices( knownChoices );
      }
    }
  }
  catch (e){
    Logger.log( e );
  }
}

function catchMultChoices(kc, c) {
  for( j=0; j< kc.length; j++ ){

    //catch choices already in MultChoice[i]
    if( kc[j].getValue() === c ){
      Logger.log( '  choice %s already a choice', c);
      return null;
    }
  }

  //choice not in MultChoice[i]!
  Logger.log( '  choice %s not in question!', c);
  return c;
}