有没有办法在继续代码之前等待异步应用程序脚本函数调用？

Is there a way to wait for asynchronous apps-script function calls before continuing with code?

我正在尝试复制驱动器中的文档，对其进行编辑并邮寄。基本上就像邮件合并。

我拿了一份模板文档，制作副本，编辑副本，然后通过电子邮件发送。 不幸的是，在电子邮件代码运行之前编辑还没有完成，所以电子邮件在编辑完成之前附加了复制的文档。有解决办法吗？

//make a copy of the template
var templateCopy = DriveApp.getFileById(templateID).makeCopy('newFile',   DriveApp.getFolderById(targetFolderID));

//select the contents of the template
var copyBody = DocumentApp.openById(templateCopy.getId())

//replace text: set the date
copyBody.replaceText("%DATE%",'today')

//send email - the email that arrives does not have the date substitution, it still contains the %DATE% tag
  GmailApp.sendEmail(targetAddress, 'eggs', 'eggs', {attachments:[copyBody.getAs(MimeType.PDF)]});

关于可能重复的编辑：SpreadsheetApp.flush() 不相关，因为我们没有使用电子表格。

答案：

使用 DocumentApp 的 saveAndClose() 方法在继续之前强制更改。

更多信息：

根据 Apps 脚本文档：

Saves the current Document. Causes pending updates to be flushed and applied.

The saveAndClose() method is automatically invoked at the end of script execution for each open editable Document.

A closed Document can't be edited. Use DocumentApp.openById() to reopen a given document for editing.

实施：

function documentStuff() {
  //make a copy of the template
  var templateCopy = DriveApp.getFileById(templateID).makeCopy('newFile',   
    DriveApp.getFolderById(targetFolderID)
  );

//select the contents of the template
  var copyBody = DocumentApp.openById(templateCopy.getId());

  //replace text: set the date
  copyBody.replaceText("%DATE%",'today');
  copyBody.saveAndClose();

  sendMail(targetAddress, DocumentApp.openById(templateCopy.getId()));
}

function sendMail(targetAddress, file) {
  //send email - the email that arrives does not have the date substitution
  // it still contains the %DATE% tag
  GmailApp.sendEmail(targetAddress, 'eggs', 'eggs', {
    attachments: [
      file.getAs(MimeType.PDF)]
    }
  );
}

将 Document 和 Gmail 方法拆分为单独的函数也有助于解决此问题。

参考文献：