I have a method which returns an array of records which I can't keep as a
pure scope because I need to do complex in-memory filtering not easy with
pure SQL.
accounts = current_user.accounts.select {|a| a.some_complex_method }
But I need to be able to scope-chain it for other purposes later, so I end
up re-scoping it:
accounts = Account.where(id: accounts.map(&:id)).order('name asc')
Unfortunately this issues a 2nd db call which isn't needed because all data
for the subsequent scope chains should be available from the original
result.
Is there a way for me to build an in-memory chainable scope for data
returned previously and already converted to array, without making extra db
calls? I realize stuff like offset will not reliably work with this
approach, but I don't need it for my use case.
Eugene
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