How to transfer parameters to a ui class in add-root!

Such like (defui Root [this] (om/props this)) and (add-root! conciliar Root ....) How to transfer parameter?

Typically the reconciler is responsible for that. From the quick start, you can see Nolen uses the static IQuery interface to get state https://github.com/omcljs/om/wiki/Quick-Start-%28om.next%29