Using barman to add traits support to Backbone extend

gistfile1.txt

// 1. Overwrite your Backbone extend with barman.Nil.extend

Backbone.Model.extend = 
    Backbone.Collection.extend = 
    Backbone.Router.extend = 
    Backbone.View.extend = 
    Backbone.History.extend = barman.Nil.extend;


// 2. Now you can use traits (a special case of mixin) when using extend:

// a silly example
var templateViewTrait = {
    template: barman.required,
    render: function () {
        this.$el.html(_.result(this, 'template'));
        return this;
    }
};

// another trait
var handlebarsSupport = {
    hbsTemplate: barman.required,
    template: function () {
        var fn = Handlebars.compile(this.hbsTemplate);
        return fn({model: this.model.toJSON()});
    }
};

// note the additional (and optional) paramater to extend
// see https://github.com/dfernandez79/barman for more details

// barman extend is compatible with Backbone extend

var contact = new Backbone.Model({name: 'Barman'});

var MyView = Backbone.View.extend([templateViewTrait, handlebarsSupport], {
    hbsTemplate: '<h1>Hello {{model.name}}!!</h1>' 
});

$('#container').html(new MyView({model: contact}).render().el);