MongoDB pullAll objects with multiple arguments

Question

I just want to remove several Objects in from my array in mongoDB using pullAll

db.collection.update({'_id': ObjectId(".....")}, { $pullAll : { 'notifications' : [{'type' : type}, {'id': id}]} })

Why is this not working? What is the correct syntax?

Update:

the document is:

{
    "_id" : ObjectId("......"),
    "notifications" : [ { "type" : "aaa",
                          "id" : "123" },
                        { "type" : "bbb",
                          "id" : "123" },
                        { "type" : "ccc",
                          "id" : "234" }]
}

Have a look at this link stackoverflow.com/questions/10310837/… — Mihai
– Mihai, Commented Nov 19, 2012 at 17:49

Asya Kamsky · Accepted Answer · 2012-11-19 18:40:49Z

2

Your problem may be one of two places:

First your update has a syntax issue:

db.collection.update({'_id': ObjectId(".....")}, 
     { $pullAll : 
         { 'notifications' : [{'type' : type}, {'id': id}]
         } 
     }
)

should be:

db.collection.update({'_id': ObjectId(".....")}, 
     { $pullAll : 
         { 'notifications' : [{'type' : type, 'id': id}]
         }  
     }
)

Note I removed }, { and joined type and id into a single JSON subdocument.

The other issue is your array elements seem to have id values which are strings of form "123" - are you sure you are passing a string to your update statement? String "123" is not equal to integer 123.

answered Nov 19, 2012 at 18:40

Asya Kamsky

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Comments

Mihai · Accepted Answer · 2012-11-19 17:51:16Z

0

To use $pullAll you need to match the whole object exactly. Why not just use $pull, I'm sure it would suit your needs

answered Nov 19, 2012 at 17:51

Mihai

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2 Comments

kschaeffler Over a year ago

I just tried with

db.collection.update({'_id': ObjectId(".....")}, { $pull : { 'notifications' : [{'type' : type}, {'id': id}]} },False,True)

and db.collection.update({'_id': ObjectId(".....")}, { $pull : { 'notifications' : {'type' : type , 'id': id}} },False,True) and I have the same result

Mihai Over a year ago

Try and $pull using only "type" or only "id", just to see if it works

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