javascript - Exclude model properties when syncing (Backbone.js)

Question

Is there a way to exclude certain property from my model when I sync?

For example, I keep in my model information about some view state. Let's say I have a picker module and this module just toggle a selected attributes on my model. Later, when I call .save() on my collection, I'd want to ignore the value of selected and exclude it from the sync to the server.

Is there a clean way of doing so?

(Let me know if you'd like more details)

Answer 1

This seems like the best solution (based on @nikoshr referenced question)

Backbone.Model.extend({

    // Overwrite save function
    save: function(attrs, options) {
        options || (options = {});
        attrs || (attrs = _.clone(this.attributes));

        // Filter the data to send to the server
        delete attrs.selected;
        delete attrs.dontSync;

        options.data = JSON.stringify(attrs);

        // Proxy the call to the original save function
        return Backbone.Model.prototype.save.call(this, attrs, options);
    }
});

So we overwrite save function on the model instance, but we just filter out the data we don't need, and then we proxy that to the parent prototype function.