Attempt to update array of object in mongodb

Question

Here is what I'm trying:

contactModel.update({
            'user_id': req.params.user_id,
            'contacts.contact_id': req.params.id
        }, {
            $set: {
                'contacts.$.name': req.body.contact.name,
                'contacts.$.phone_number': req.body.contact.phone_number
            }
        })

But the code is only for updating specific key. I want to update it based on dynamic key. If name is coming in req.body then it should update only name both are coming, so it should update both.

Answer 1

Fill dinamically the update object with keys found in req.body

   var obj = {};

   for(var i in req.body.contact){
     obj["contacts.$."+i] = req.body.contact[i];
   }

   contactModel.update({
        'user_id': req.params.user_id,
        'contacts.contact_id': req.params.id
    }, {
        $set: obj
    })