Node.js MongoDB - How to update multiple documents with Mongoose?

Question

I have a users collection and every user has a number of contacts. When a user deletes their account I want that this user's id would be deleted from the contacts array of all the users with who this user is connected. I have tried this Model.Update query but it doesn't work. Here is my code so far:

                User.update({'userId':{ $in: userIds }, 
                        $pullAll: {'contacts': [myId] },'multi': true 
                    },function(err, count) {
                        if(err){
                            console.log(err);
                        }else{
                            console.log(count);
                        } 
                    });

I take it that userIds is an array of id's for users that need to be removed and subsequently remove them from the contacts array of the other users, correct? Can you also update your question to show the User model's schema definition? — chridam
– chridam, Commented Apr 25, 2017 at 14:17

robertklep · Accepted Answer · 2017-04-25 14:18:15Z

4

The update document and multi should be passed as separate arguments:

User.update({
  userId : { $in : userIds }        // conditions
}, {
  $pullAll : { contacts : [myId] }  // document
}, {
  multi : true                      // options
}, function(err, count) {
  if (err) {
    console.log(err);
  } else {
    console.log(count);
  }
});

Documentation here.

answered Apr 25, 2017 at 14:18

robertklep

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Comments

Mohammad nabil · Accepted Answer · 2018-02-02 06:24:20Z

0

Can update multiple documents with multiple conditions

Model.update({
    _id : { $in : ids}        // conditions
}, {
    $set: {deletion_indicator: constants.N} // document
}, {
    multi : true                      // options
}, function(err, result) {
    if (err) {
        console.log(err);
    } else {
        console.log(result);
    }
});

answered Feb 2, 2018 at 6:24

Mohammad nabil

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