push new value to mongodb inner array - mongodb/php

Question

i have this document in mongo:

{    "_id": ObjectId("4d0b9c7a8b012fe287547157"),    "done_by": ["1"] } 

and i want to add another value to "done_by" field, so my expected document will be::

{    "_id": ObjectId("4d0b9c7a8b012fe287547157"),    "done_by": ["1","2","3"] } 

i try this:

$conn = new Mongo(); $q = $conn->server->gameQueue; $id = new MongoId("4d0b9c7a8b012fe287547157"); $q->update(array("_id"=>$id),array('$push' => array("done_by","2"))); 

but nothing happens, anyone know how to do this?

Answer 1

Since neither of these answers are actually telling you what's wrong here ...

$conn = new Mongo(); $q = $conn->server->gameQueue; $id = new MongoId("4d0b9c7a8b012fe287547157"); $q->update(array("_id"=>$id),array('$push' => array("done_by","2"))); 

There is a problem with your $push statement, you are not pushing "done_by" with a value of "2" you are actually sending "done_by" and "2" ...

Here is the issue ...

array('$push' => array("done_by","2")) 

This should have a => not a ,

array('$push' => array("done_by" => "2")) 

However, note that every time you run this it will insert another "2" if you want MongoDB to only inset "2" if it doesn't already exist in "done_by" then you should use $addToSet ...

array('$addToSet' => array("done_by" => "2")) 

This statement won't add 2 everytime, only the first time.