Validate in mongoose without saving

Question

Is it possible to run the mongoose validator without also saving? Basically, wanting to do a dry run of a change and making sure that it would save if I chose to:

myThing.validated_property = 5;
try { myThing.check(); } catch(e) { console.log("nope!") }

Answer 1

You can call validate on a Mongoose doc to evaluate its validation rules:

myThing.validated_property = 5;
myThing.validate(function(err) {
    if (err) { console.log('nope!') }       
});