mongoDB-使用$ set和一个对象更新文档

Question

I have an object which contains multiple values from input fields. Now I want to update a specific collection. I did it like this:

var info = {age: t.find('input[name=age]').value, organization: t.find('input[name=organization]').value};
Users.update({_id: userId}, {$set: {profile: info}});

Now, the problem is that this removes profile values which exist before the update operation. Is it possible to keep values in the document, which are not part of the info object?

Any help would be greatly appreciated.

Answer 1

You can use dot notation in the $set keys to update individual fields in embedded objects:

var set = {
    'profile.info.age': t.find('input[name=age]').value,
    'profile.info.organization': t.find('input[name=organization]').value
};
Users.update({_id: userId}, {$set: set});