In Node.js Mongoose, I want to update each field…how can I do that?

Question

User.find({},function(err,docs){ 
            foreach(docs as d){
                d.name="apple";
                d.save();
            };
        }); 

This doesn't work! I get some "unique identifier" error. Can someone fix this for me?

Answer 1

I think you're using foreach incorrectly. Try replacing the contents of your callback with this:

docs.forEach(function(elem, index, array) {
    elem.name = "apple";
    elem.save();
});

Check out the MDC for more information on foreach.

Answer 2

Does d have a unique index set? If so you will be unable to set the same thing for multiple instances.