MongoDB / Mongoose: MarkModified a nested object

All we need is an easy explanation of the problem, so here it is.

Unfortunately I don’t have a record I can test this on, but I can’t find any information on this anywhere.

Say I have a document like this:

{
  email:  {
       type: 'Gmail',
       data: {//freeform data},
    }
}

I want to update doc.email.data. I need to use markModified() or else the data won’t save correctly.

Do I mark modified like this?

doc.email.data = newData;
doc.markModified('email.data');
doc.save();

Or do I just do markModified('email') and Mongoose will work out the rest?

How to solve :

I know you bored from this bug, So we are here to help you! Take a deep breath and look at the explanation of your problem. We have many solutions to this problem, But we recommend you to use the first method because it is tested & true method that will 100% work for you.

Method 1

You need to provide the full path the modified object field, so it should be:

doc.markModified('email.data');

Note: Use and implement method 1 because this method fully tested our system.
Thank you 🙂

All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0

Leave a Reply