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@leshy

leshy/extendEach.js

Forked from alassek/extendEach.js
Created Jan 15, 2012
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What would you like to do?
Easy multiple-inheritance in Backbone.js
/*
multiple inheritance/mixins for backbone js
automatic init call to super classes and defaults attribute inheritance
clsbla = Backbone.Model.extend4000(cls1,cls2,mixin6,{ bla: 3 })
*/
(function () {
function extend4000 () {
var args = Array.prototype.slice.call(arguments),
child = this;
var initf = []
var defaults = {}
if (child.prototype.defaults) {
defaults = _.clone(child.prototype.defaults)
}
_.each(args, function (superc) {
// did I receive a dictionary or an object/backbone model?
if (superc.prototype) { superc = superc.prototype }
// inherit defaults
if (superc.defaults) {
defaults = _.extend(defaults,superc.defaults)
}
// build a list of initialize functions if you find more then one
if (superc.initialize) {
(initf.length) || initf.push(child.prototype.initialize);
initf.push(superc.initialize)
}
child = child.extend(superc);
});
// construct a combined init function
if (initf.length) {
child = child.extend({ initialize : function(attributes,options) {
var self = this
_.map(initf,function(initf) { initf.call(self,attributes,options) })
}})
}
child.prototype.defaults = defaults
return child;
}
Backbone.Model.extend4000 =
Backbone.Collection.extend4000 =
Backbone.Router.extendEach =
Backbone.View.extend4000 = extend4000;
})();
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