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I'm looking for a simple way to let users define a set of rules to filter objects.
Eg. let them define something like "notify me about a booking if booking date < 2009/04/30 AND value > 100.00"
More or less: I'd like to have a Ruby rules engine with custom DSL.
Is there a library offering that? Came across Ruleby, but it doesn't support custom DSL, yet.
What's the best apporach to do that?
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Have a look at the wongi-engine gem it is a new rules engine based on the Rete algorithm that is gathering a fair bit of attention lately.
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