For fun, I wanted to write a wallet application. There must be tranasctions with came in to flavors - income and spendings. After playing for a while, i wanted to make everything pretty.
I have something like:
class FinancialTransction < AR::Base belongs_to :transactinable, :polymorphic => true end
class Income < AR::Base end
class Spending < AR::Base end
Then i though - why should i have almost empty models just for the sake of saving id. I tried this and that, but nothing works. It's either empty transactionable_type or two separate records (first without type, second with).
My question: how to implement this? is there some beautiful way?