Class Store. Same interface for XHR Transport and MongoDB driver

Class.Store.js

// atma-class
// common node.js and browser
var Article = Class('Article', {
    Base: Class.Serializable({
        date: Date
    }),

    _id: null,
    date: null,
    body: '',

    Validate: {
        body: function(value) {
            if (!value)
                return 'Should not be empty';
        }
    }
});

// in node.js
// define mongo db once
Class.MongoStore.settings({
    db: 'my-blog-site'
});

// then update your entities with MongoStore attribute
var Article = Class.patch('Article', {
    Store: Class.MongoStore.Single('blogs')
});

// in browser
var Article = Class.patch('Article', {
    Store: Class.Remote('/rest/blogs/?:_id')
});

// Now you can work with the Article in nodejs and browser environments:
// in browser: serialized data is sent via Ajax to the server, @see Remote
// in nodejs: serialized data is saved/updated/patched/remove to/fom the mongodb
var article = new Article({
        body: 'Hello world'
    })
    .save()
    .done(function(article) {
    
        console.log('saved', article._id);
    })

// other methods
article.patch({
    $set: {
        date: new Date
    }
});

var article = Articel
    .fetch({
        _id: ID, 
        date: {
            $gte: new Date()
        }
    })
    .done(function(article){
        // 
    })
    .fail(onError)
    ;

article
    .del();