Backbone.js - id vs idAttribute vs cid

Question

I\'ve been studying Backbone.js for a few weeks, and I feel comfortable using views with models, routers, and collections.

I still have some big gaps:

Answer 1

The id property on a model is automatically assigned based on the id set in the model’s attributes hash. Ideally, this is the ID that you receive from the rest API for the resource that you are querying. On the other hand, cid is an ID temporarily assigned to each model and is useful until an actual ID is determined for the object. For example, a model pushed to a collection that has not yet been persisted can be addressed using cid, until it is saved in the database and an actual ID is generated for it.