14 10 / 2013
How to get created_at timestamp from mongo BSON id using mongoid
Writing this down as I always forget this, and this search query is not very google friendly either (and I usually waste a lot of time looking for this, and probably so would others). This is how you do it:
sample_object.id.generation_time
Now the bonus stuff! If you wan to do range queries for created_at timestamp on the BSON id, this is how you do it: