javascript - Loopback - see data before overwriting in "after save" hook -


i've seen question: strongloop : compare old model new instance in operation hook 'before save'

is there way data in db before overwriting done in before save hook? basically, want able pass 1 element update in put request rather pass required fields during request.

it seems looking upsertwithwhere or upsert patch rather put. if , right row can identified (you send along primary id or identify row) passed along data updated/overwritten , rest kept.

that's easy way, if want more advanced (like doing modifies on db before save) have access model in before save hook , modify. remember can before save long postpone "next()" call.


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