Backbone Tutorials - Model

Backbone-Tutorials-Model.js

Person = Backbone.Model.extend({
  // default values of attributes
  defaults:{
    age:0,
    children: []
  },
  // validation
  validate: function(attributes){
    if(attributes.age<0){
      console.log("Validation error, person can't be negative age!");
      return "person can't be negative age";
    }
      
  },
  // constructor method
  initialize: function(){
    console.log("New person was born");
    this.bind("error",function(model,error){
      console.log("ERROR:"+model);
    });
    
    // Listen to attribute changes (using bind)
    this.bind("change:name", function(){
      var currentName=this.get("name");
      console.log("Name changed from "+currentName + " to " + name);
    });
  },
  
  // custom methods
  adopt: function(newChildsName){
    var childrenArraya=this.get("children");
    childrenArraya.push(newChildsName);
    this.set({"children": childrenArraya});
  },
  replaceNameAttr: function(name){
    this.set({name: name});
  }
});

var person = new Person();

person.set({name: "John", lastName:"Dove", children: ["First","Second"]});

person.adopt("Tara");

// validation is only run on save method or by turning on validate option on set method (since Backbone 0.9.10)
person.set("age", -5 , {validate : true});
this.person.save({age: -10});

console.log("Hi, "+person.get("name")+" and "+person.get("children"));


person.replaceNameAttr("Johny");
// person.set({name: "Milan"});

// convert to JSON
console.log(person.toJSON());

// show all attributes
console.log(person.attributes);