javascript - 根据列的值发送电子邮件？

Question

我有两张纸 1. SS & 2. MessageOutput。

第一次运行时，电子邮件已成功发送。但是第二次运行，我们得到错误：

例外：范围内的行数必须至少为 1

这是上线：var messageRange = messagesheet.getRange(1, 1, mailMessage.length, 5);

这是代码：

function sendEmail() {

  //setup spreadsheet
  var ss = SpreadsheetApp.getActiveSpreadsheet();
  var datasheetname = "SS";
  var datasheet = ss.getSheetByName(datasheetname);
  var messagesheetname = "MessageOutput";
  var messagesheet = ss.getSheetByName(messagesheetname);
  var templatesheetname = "Email Template";
  var templatesheet = ss.getSheetByName(templatesheetname);  
  messagesheet.clear();

  // get the number of rows on the data sheet
  var Avals = datasheet.getRange("A1:A").getValues();
  var Alast = Avals.filter(String).length;
  //Logger.log("Alast = "+Alast);
  var sslast = datasheet.getLastRow();

  // get the supplier column
  var supplierRange = datasheet.getRange(3,7,Alast-2,1);

  //get the supplier data
  var supplierData = supplierRange.getValues();

  //get the status column
  var statusRange = datasheet.getRange(3,9,Alast-2,1);

  // get the status data
  var statusData = statusRange.getValues();

  var transCount = supplierData.length;
  var supplierList = [];
  var transData = datasheet.getDataRange().getValues();

  // supplierList contains the unique supplier list
  supplierData.forEach(function(x){
    if(supplierList.indexOf(x[0]) === -1 && x[0]!="" ){
        supplierList.push(x[0]);
    }                   
  });
  var supplierCount = supplierList.length;


  var itemCount = 0;
  var mailMessage = [];
  var mailItem = [];

  //build the mail item header
  var mailItemHeader = [];
  mailItemHeader.push(transData[0][0]);
  mailItemHeader.push(transData[0][1]);
  mailItemHeader.push(transData[0][2]);
  mailItemHeader.push(transData[0][3]);
  mailItemHeader.push(transData[0][4]);
  //mailItemHeader.push(transData[0][6]);

   // loop through the data, once for every supplier
  for (supplier = 0; supplier<supplierCount; supplier++){
    mailMessage=[];
    itemCount = 0;

    // now loop through the data
    // start i = 2 to allow for header
    for (var i = 2; i < transCount+2; i++) {
      mailItem=[];

    // the suplier matches and if the checkbox is false
     if (supplierList[supplier] == transData[i][6] && transData[i][8] == false){

        // this this is the first item then push the mail header 
        if (itemCount ==0){
          mailMessage.push(mailItemHeader);
          // get the email address
          var emailAddress = transData[i][5];
          var subject = "Purchase order";
        }

        // this is a match
        var emailAddress = transData[i][5];

       // push the transation values for this row onto the mailitem array
        mailItem.push(transData[i][0]);
        mailItem.push(transData[i][1]);
        mailItem.push(transData[i][2]);
        mailItem.push(transData[i][3]);
        mailItem.push(transData[i][4]);
       //mailItem.push(transData[i][6]);

      // push the row onto the rest of the mail message data
        mailMessage.push(mailItem);
        itemCount=itemCount+1

        //update the status value to true
        statusData[i-2] = [true];
      }
      else
      {
      //Logger.log("no match");
      }

    } // end of the transaction loop for this supplier

    // define the temporary output range
    var messageRange = messagesheet.getRange(1, 1, mailMessage.length, 5);
    // paste the items details to the temporary output range
    var messageupdate = messageRange.setValues(mailMessage);

    // get the values for the items only (no header)
    var messagedata = messagesheet.getRange(2, 1, mailMessage.length-1, 5).getValues();
    var messageitemcount = messagedata.length;

    // create a subject
    var emailSubject = "Purchase Order: StackOverflow Test";
    // get the email address
    var emailaddress = emailAddress;

    // message
    var messagePrefix = "Attention: "+supplierList[supplier];

    // start the build of the html message
    var columns = 5;
    var columncount=1;
    var message = 'Please supply the following products:<br><br><table style="border-collapse:collapse;" border = 1 cellpadding = 5>';
    // get the headers
    for (h=0; h<columns;h++){

      if (columncount ==1){
        var header = '<tr>';
      }

      header+='<th style="background-color:#ffeb3b">'+mailItemHeader[h]+'</th>';

      if (columncount ==5){
        header+='</tr>';
      }
      columncount=columncount+1
    }

    // add the header to the mesage
    message+=header;

    // loop through the items on the temporary output and get the item values
    for(c=0;c<messageitemcount;c++){

      // increment message
      message+='<tr><td>'+messagedata[c][0]+'</td>'+'<td>'+messagedata[c][1]+'</td>'+'<td>'+messagedata[c][2]+'</td>'+'<td>'+messagedata[c][3]+'</td>'+'<td>'+messagedata[c][4]+'</td></tr>';

    }

    // finalise the message
    message+='</table>';  

    // send the email
    GmailApp.sendEmail(emailaddress, emailSubject,  messagePrefix, {htmlBody: message,  });

    // clear the state from the temporary outsheet sheet
    messagesheet.clear();

  }
  //update the status range - return all to ticked (true)
  statusRange.setValues(statusData);

}

标签： javascriptgoogle-apps-scriptgoogle-sheets

Answer 1

例外：范围内的行数必须至少为 1

表示

mailMessage.length

在

var messageRange = messagesheet.getRange(1, 1, mailMessage.length, 5);

是0。

if您可以使用语句捕获这种情况，例如：

if(mailMessage.length>0){
    var messageRange = messagesheet.getRange(1, 1, mailMessage.length, 5);
    // paste the items details to the temporary output range
    var messageupdate = messageRange.setValues(mailMessage);
    ...
    //the rest of your code that should be run only if mailMessage is not empty
   GmailApp.sendEmail(emailaddress, emailSubject,  messagePrefix, {htmlBody: message,  });
   ...
}
...

请注意，您可能想查看您的代码并了解为什么mailMessage.length为 0。似乎您只将值分配给mailMessage, 时

if (supplierList[supplier] == transData[i][6] && transData[i][8] == false),

因此您可以将其余的消息发送相关代码放在同一个语句中。