Pull multiple values from array with mongo node native driver

Question

The problem is :

doc1:{ 
  _id:1,
  array:['a','b','c']
},
doc2:{ 
  _id:2,
  array:['a','f','c']
}

I'm trying to remove ['a','b'] from the array field, using :

.update({_id:1},{$pull:{array:['a','b']}}) but it doesn't seem to change anything, is there a different function I should use?

possible duplicate of http://stackoverflow.com/questions/32002691/how-do-i-remove-a-string-from-an-array-in-a-mongodb-document/32002845#32002845 — Yathish Manjunath, Aug 15 '15 at 13:53

Blakes Seven · Accepted Answer · 2015-08-15T12:30:46.253

4

The $pull operator actually takes an argument as a "query", so the regular $in applies here:

.update({ "_id": 1 },{ "$pull": { "array": { "$in": ["a","b"] } } },{ "multi": true })

Which basically asks to $pull "either" values "a" OR "b" from the array.

Also do not forget the "multi" option when you need to update more than one document in your statement.

edited Aug 15 '15 at 12:30

answered Aug 15 '15 at 12:28

Blakes Seven

@xShirase Of course it does. Remember it's a "query" and also remeber to ["accept"](http://stackoverflow.com/help/accepted-answer) responses to your questions that "work". – Blakes Seven Aug 15 '15 at 12:31
lol you can't accept before 10minutes, and you've answerd in 2min – xShirase Aug 15 '15 at 12:35
@xShirase LOL indeed. Damn you stackoverflow overlords, and your cheat protection guidelines! Just kidding. But don't go to sleep or just don't forget. :) – Blakes Seven Aug 15 '15 at 12:38

1 Answers1