continue executing remaining the promises on error

Question

I have an Array of promises that are processing a mail queue. I am using Promise.all() to handle this array of promises.

let mails = data.result;
    let promises = [];
    mails.forEach(mail => {
        let mailOptions = {
            from: mail.mail_from,
            to: mail.mail_to,
            subject: mail.subject,
            [mail.mail_type]: mail.body
        };
        promises.push(helper.sendMail(mailOptions));
    });
    Promise.all(promises)
    .then(data => {
        // update mail queue status in the database.
    }).catch(err => console.log(err));

Now If there occurs an error while sending any of the emails then the code that updates the mail status in the database does not execute.

Is there a way to let the execution of code occur even if there is an error.

In other words, I want then to be executed everytime a mail is sent successfully otherwise catch should be called but the rest of the mail queue should also be processed.

Do you want to update the mail queue status individually after *each* mail, or once after all mails were sent? — Bergi, Oct 30 '18 at 22:02

karran · Answer 1 · 2018-10-30T20:19:46.233

For what I understand you want to execute then or catch for each promise, right?

const mails = data.result;
mails.forEach(mail => 
  helper
    .sendMail({
      from: mail.mail_from,
      to: mail.mail_to,
      subject: mail.subject,
      [mail.mail_type]: mail.body,
    })
    .then(data => {
      // update mail queue status in the database.
    })
    .catch(err => console.log(err))
)

if that is not what you meant, comment and I'll try to help you out

continue executing remaining the promises on error

1 Answers1