Pymongo - Remove an element from array

Question

I am trying to remove an element from array:

{ "_id" : ObjectId("56728dac7e30ad640af52a88"), "key" : "inbox", "notify" : false, "unread" : [ "5" ], "user" : "admin" }

I tried with this query mgr.db.update_one({"key":"inbox","user":"admin"},{"$pull":{"unread.5":""}}) and also mgr.db.update_one({"key":"inbox","user":"admin"},{"$pull":{"unread":{"5":""}}), both does not remove the element from the array. How can I achieve this?

Sede · Accepted Answer · 2015-12-17 20:52:57Z

1

The $pull operator has the form:

{ $pull: { <field1>: <value|condition>, <field2>: <value|condition>, ... } }

Which means the correct query is:

mgr.db.collection.updateOne(
    { "key": "inbox", "user": "admin"},
    { "$pull": { "unread": "5" } }
)

answered Dec 17, 2015 at 20:52

Sede

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