manipulate data and then do something

[osadan]

How I can do make update on data without chaining the command to find();

_mongo.connect.then(function() {
            _mongo.collection('friends').findOne({
                user: {
                    id: userId
                }
            }).then(function(user) {
                var result = importContacts(user,maxResults);
             // I want to save the contacts of the user at this point 

 });

how I can do that (updating the user object without calling collection("friends").find(user) again

[jonathanong]

use .new() on an update() command?

[osadan]

but then I still will have to chaing the update .
I need to call a "chainable" command inside the promise callback function .

[jonathanong]

I don't get it.

[osadan]

Update and new is chainable functions that you chain to collection (actually Query Object) .
means after you call object then you update him

_mongo.collection('friends').findOne({user: {id: userId}}).update({set : {data : data}});

but what if I want to process some logic based on the data I get from the colllection and then update the object with the new data let say change a flag

_mongo.collection('friends').findOne({user: {id: userId}}).then(function(friend){
if(friend.hasFriends){
//some logic
}else{
//get friends
}
});

now If I want to update the object I have to call the collection.findOne() again in order to chain the update function .

else{
//get friends
firend.hasFriends = true;
_mongo.collection('friends').findOne({user: {id: userId}}).update({set : {hasFrineds : true}});
}

I have to say that I use mongo-next as main module in my project and It is very helpful for me and saved me a lot of time and effort

[osadan]

I think if the collection will be added to the query result as parameter it will be possible to chain actions on the promise callback