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Android docs: Canonical IDs.
GCM under certain situations will require you to update your registration IDs. You must listen for these events and update your records accordingly. Rpush provides a reflection hook for you to implement:
Rpush.reflect do |on| # Called when the GCM returns a canonical registration ID. # You will need to replace old_id with canonical_id in your records. on.gcm_canonical_id do |old_id, canonical_id| # Example code if you have a Class 'Device' with an attribute 'registration_id': d = Device.find_by(registration_id: old_id) d.update_attributes(registration_id: canonical_id) end end
See Reflection API for more information.