Model Class

Model.js

// Stores items and notifies observers about changes.
//
//   ```
//   var model = new Model();
//   ```
//
// @class Model
var Model = function(attributes) {
    this.id = _.uniqueId('model');
    this.attributes = attributes || {};
};

// Store properties and values 
//
//   ```
//   model.set({ name: "Juan Olvera", age: 30 });
//   // => Model { id: "model1", attributes: Object, get: function, set: function...}
//   ```
//
// @param {Object} object containing the model properties and values
// @return {Object} the model.attributes object
Model.prototype.set = function(attrs) {

    // check if the attributes are stored inside an `Object`
    if (_.isObject(attrs)) {
        _.extend(this.attributes, attrs);

        // notify that the model has changed
        this.change(attrs);
    } else {
        throw "attrs is not an Object";
    }

    return this;
};

// Get the value of defined property
//
//   ```
//   model.get("name")
//   // => "Juan Olvera";
//   ```
//
// @param {string} name of the property we are looking for
// @return {value}
Model.prototype.get = function(key) {
    return this.attributes[key];
};

// Remove a selected model attribute
//
//   ```
//   model.remove("name");
//   ```
// @param {string} property name
Model.prototype.remove = function(attr) {
    delete this.attributes[attr];
};

Model.prototype.has = function(attr) {
    return this.attributes.hasOwnProperty(attr);   
};

Model.prototype.reset = function() {
    this.attributes = {};
    this.change(this.attributes);
    this.trigger(this.id + "reset", this.attributes);
};

Model.prototype.size = function() {
    return _.size(this.attributes);
};

Model.prototype.toJSON = function(opts) {
    return _.clone(this.attributes);
};

Model.prototype.change = function(attrs) {
    this.trigger(this.id + "update", attrs);
};

_.extend(Model.prototype, Events);