Google 表单提交，发送电子邮件锁定不起作用

Question

我创建了一个带有电子邮件字段的 google 表单。响应存储在 spreadsheet 中。在提交时，我从 sheet（最新响应）中取出最后一行并向该用户发送一封电子邮件。

我已经尝试实现一个锁定系统，但是它并没有像我希望的那样工作。如果有多个快速连续提交（即一分钟内 3 个）只有最后一个用户会收到发送给他们的电子邮件，他们实际上会收到 3 个重复的电子邮件，即快速连续提交的数量。

function EmailFormConfirmation() {
// Get a public lock on this script, because we're about to modify a shared resource.
var lock = LockService.getScriptLock()
// Wait for up to 30 seconds for other processes to finish.
lock.waitLock(30000);
 try {
var sheetname = "reg-responses"
var columnnumber = 4

var ss = SpreadsheetApp.getActiveSpreadsheet(); 
var sheet = ss.getSheetByName(sheetname);

// Determines row number of most recent form submission and sets it as "lastrow"
if (sheet.getRange(sheet.getMaxRows(),1).getValue() != "") {
var lastrow = sheet.getMaxRows()
    } 
else {
  var count = 0
  for (var i = 0; i < sheet.getMaxRows(); i++) {
    if (sheet.getRange(sheet.getMaxRows()-i,1).getValue() != "") {
      var lastrow = sheet.getMaxRows()-i
      break;
    }  
  }
 }
  var email = sheet.getRange(lastrow,columnnumber).getValue();                            
  var name = sheet.getRange(lastrow,2).getValue();

  var message = "<HTML><BODY>"
    +"<h3>Your registration has been submitted</h3>"
    +"<p><b>Name</b>: "+name+"</p>"        
    +"</HTML></BODY>";      

  //validation is handled on the form as regex
 MailApp.sendEmail(email, "Form Submitted", "", {htmlBody: message}); 

 //flags it as email sent
 sheet.getRange(lastrow,8,1,1).setValue("Email Sent");

         //Here is the catch if the lock doesn't work
  if(!lock.hasLock()){

     Logger.log('Could not obtain lock after 30 seconds.');
  }
//Secondary catch for the entire function. 
} catch (e) {
Logger.log(e.toString());
}

 // Release the lock so that other processes can continue.
 lock.releaseLock();
}

我必须在我的锁上解决什么问题才能解决这个问题？

Answer 1

您可以检查 sheet 中的所有行，而不仅仅是最后一行，如果该行没有将标志设置为 "Email Sent"，请发送电子邮件。

这里的问题不是锁定，而是您只检查了最后一行。

Google 表单提交，发送电子邮件锁定不起作用

Google Form on Submit, Send Email Lock Doesn't Work

javascript

google-sheets

google-apps-script

google-forms