MongoDB, remove object from array

Question

Doc:

{
   _id: 5150a1199fac0e6910000002,
   name: \'some name,
   items: [{
      id: 23,
      name: \'item name 23\'
   },{
      id: 24,
      name: \'ite         


        

Answer 1

my database:->
        {
       "_id" : ObjectId("5806056dce046557874d3ab18"),
       "data" : [ 
           {
               "id" : 1
           }, 
           {
               "id" : 2
           }, 
           {
               "id" : 3
           }
       ]
    }

MY QUERY:->
db.getCollection('play_table').update({},{$pull:{"data":{"id":3}}},{multi:true}
OutPut:->
{
  "_id" : ObjectId("5806056dce046557874d3ab18"),
       "data" : [ 
           {
               "id" : 1
           }, 
           {
               "id" : 2
           }
       ]
    }

Answer 2

I have a document like

I have to delete address from address array

After searching lots on internet I found the solution

Customer.findOneAndUpdate(query, {$pull: {address: addressId}}, function(err, data){
        if(err) {
          return res.status(500).json({'error' : 'error in deleting address'});
        }

        res.json(data);

      });

Answer 3

You can try it also:

db.getCollection('docs').update({ },{'$pull':{ 'items':{'id': 3 }}},{multi:true})

Answer 4

Use $pull to remove the data

return this.mobiledashboardModel
.update({"_id": args.dashboardId}, { $pull: {"viewData": { "_id": widgetId}}})
.exec()
.then(dashboardDoc => {
     return {
        result: dashboardDoc
     }
});

Answer 5

try..

db.mycollection.update(
    {'_id': ObjectId("5150a1199fac0e6910000002")}, 
    { $pull: { "items" : { id: 23 } } },
false,
true 
);

Answer 6

Kishore Diyyana:

If you want to remove all elements including key of the element attributes list. Here is the example of mongoDB unset operator:

db.UM_PREAUTH_CASE.update( { 'Id' : 123}, { $unset: { dataElements: ""} } )

JSON Look like this:

{ "Id":123,"dataElements" : [ { "createdBy" : "Kishore Babu Diyyana", "createdByUserId" : 2020 }, { "createdBy" : "Diyyana Kishore", "createdByUserId" : 2021 } ] }