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GitHub User: rcasey
Glad to hear you're making progress; such is not the case with me!
I've posted a long message describing my problem over at StackOverflow.com...my handle there is rixter.
I feel close to a solution, so would like to stay in touch. This could be a powerful tool for my project -- if I can get it working!
I would like to do a very similar thing with DataTables. Have you made any progress in how to display data from associated tables using server side processing?