Mustache Helpers that accept computes and return an element should work

[justinbmeyer]

I want to make easy two-way binding helpers like:

(function(){

var Value = can.Control({
    init: function(){
        this.set()
    },
    "{value} change": "set",
    set: function(){
        this.element.val(this.options.value())
    },
    "change": function(){
        this.options.value(this.element.val())
    }
})

can.Mustache.registerHelper('value', function(value){
    return function(el){
        new Value(el, {value: value});
    }
});

})()

<input {{value user.name}}/>

But this is currently not possible because user.name's value will be passed as value to the mustache helper instead of a compute.

[justinbmeyer]

Related: 58a0662