Updating data
$m->demo->steps->update(
[ 'person' => "derickr" ],
[ '$inc' => [ "steps_made.20140202" => 712 ] ],
[ 'upsert' => true ]
);
Record after update:
{
person: "derickr",
steps_made: {
"20140201": 10800,
"20140202": 712,
}
}
Atomic *per-document* only
No transactions
Can't use other field names in updates