Cache mechanism causes some trouble #694

I defined a mysql model

{
    id: {type: 'number'}
    some_object: {type:'text'}
}, {
    hooks: {
        beforeSave: function (next){
            this.some_object = JSON.stringify(this.some_object);
            return next();
        },
        afterLoad: function (next){
            this.some_object = JSON.parse(this.some_object);
            return next();
        }
    }
}

Every time I use it, it want the field is already a JSON obj and text in db

Seems that there is a caching mechanism:

1. I get it by id immediately after I create one.
   I found that the afterLoad will not be called when I do some search thing
2. which causes the problem:
   the beforeSave hook is called at last, so the some_object in memory is text not obj

how about calling the afterLoad hook no matter it is in cache or not?