Backbone.js Collection fetchMany()

gistfile1.js

var Equipment = {};
Equipment.Model = Backbone.Model.extend({

	urlRoot: 'equipment',
	defaults: {
		//...
	}
});


Equipment.Collection = Backbone.Collection.extend({

	url: 'equipment/list',
	model: Equipment.Model,

	fetchMany: function(id_list) {

		var that = this;

		Backbone.sync('create', new Backbone.Model({id_list: id_list}), {

			url: that.url,
			success: function(response_data) {

				var models = [];
				for (i=0; i<response_data.length; i++) {
					models.push(new that.model(response_data[i]));
				}

				that.reset(models);
				return true;
			},
			error: function() {
				// handle error
			}
		});
	}
});	

var my_equipment_list = new Equipment.Collection();
my_equipment_list.fetchMany([12, 345, 234, 55, 23]);