MongoID: Group and Count

Question

Supposing I have a model Post, wich contains only the field desc.

The user can use hashtags, like #rails inside any posts...

How can I list and count the hashtags used, for example, in the last 10 days?

I'm do not know much about mongodb, but I see that I could use something called map_reduce.. have no idea why/how.

Thanks in advance.

score 1 · Accepted Answer · answered Oct 16 '12 at 10:24

1

You are right...this can be solved using mad/reduce function...
try this or this gem if you dont want to think a lot lol

answered Oct 16 '12 at 10:24

Luiz E.

hmm.. I think that should work. Tonight in my home I'll try it. Thanks by the way – caarlos0 Oct 16 '12 at 11:37

1 Answers1