Security rules Firebase -


i'm struggling few security rules, have following setup:

enter image description here

every user can create device. , every device can create room. relation between room , device in devices rooms table. want devices can join room.

i thought give them devices rooms key in case kpt_1..... , need know 1 device uid in there chttrmpl9fe.... , when correct device can join room. approach? , how can implement in te security rules?

and no don't have security rules right now, because don't know how @ way.


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