Extends Backbone.Model with a reset method like Backbone.Collection has.
As described in this Backbone issue conversation, Backbone.Model lacks a reset method like Backbone.Collection has. The workaround when you want to reset/replace a Model's state is to do the following:
model.clear().set(attrs);But using clear guarantees a change:* event for every single attribute on the model, along with a second change:* event for those attributes which are specified in attrs. Attributes which didn't really change will instead have two change events. This might not matter if your application doesn't listen to model change events, but if it does, this can lead to lots of unnecessary change events.
What if we add silent: true to the clear() call?
model.clear({silent:true}).set(attrs);This is better in that we don't have a bunch of needless change: events, but it has a hole: if the model has an attribute which is not specified in attrs, it will get unset, but will not have its change:* event fire. This also can cause problems in applications which listen for change events on any such attributes.
What is really needed is a reset method which replaces the Model's state, firing change events only for those attributes which changed, or which were unset.
This repo extends Backbone.Model.prototype with just such a method. If you want to see how it works in more detail, check out the Spec file.
You can run tests with grunt test