MongoDB, update collection field if new value is not null

Question

I would update a collection setting the value only if the new values are not null. I have a code like this:

 ...
 var userName = req.body.nome;
 var userSurn         


        

Answer 1

You can use lodash like this other question: https://stackoverflow.com/a/33432857/4777292

_.pickBy({ a: null, b: 1, c: undefined }, _.identity);

would be

{b:1}