Hi all,

I'm trying to find the most effective way to generate an aggregation
report.  The models involved are:

Customer  --(has_many)--> Charges
Charges --(have_one)-->Account


What I'm trying to do is find the total charges during the year for
each customer by account.  In other words, a function like:

customer.charges_for_year()

in the customer model that will return a hash of each account charged
and the customer's total charges to that account.

>From what I've read I don't think I should be using named_scope, since
this involves associations...

Any ideas?

Thanks!
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