gistfile1.js

// dynamically apply a mixin specified in an object property
var MyClass = SC.Object.extend({
    extraMixin: null,

    foo: "bar",

    init: function() {
        this.mixin(this.extraMixin);
        arguments.callee.base.apply(this, arguments);
    },

    someProperty1: function(){
        console.log("in someProperty1")
        return this.get('foo') + " : something1"
    }.property('foo').cacheable()

});

var ExampleMixin = {


    someProperty2: function(){
        console.log("in someProperty2")
        return this.get('foo') + " : something2"
    }.property('foo').cacheable()
    
};

var instance = MyClass.create({
    extraMixin: ExampleMixin
}) ;


/*

console output

>>> instance.get('foo')

"bar"

>>> instance.get('someProperty1')

in someProperty1

"bar : something1"

>>> instance.get('someProperty2')

in someProperty2

"bar : something2"

>>> instance.get('someProperty1')

"bar : something1"

>>> instance.get('someProperty2')

"bar : something2"

>>> instance.set('foo', "something else")

MyClass:sc554 { extraMixin=Object, more...}

>>> instance.get('foo')

"something else"

>>> instance.get('someProperty1')

in someProperty1

"something else : something1"

>>> instance.get('someProperty2')

"bar : something2"


*/