My json is as follow:
({ \"status\":\"TRUE\", \"message\":\"Words\", \"data\":[ { \"name\":\"paint\", \"author\":\"snooky\", \"word_id\":\"1\", \"categor
It seems that roll_id is a field of your model, so you should be able to get it from your record:
roll_id
var rollId = record.get('roll_id'); ratingStart(rollId);