model-brighthas
v0.3.1
Published
model for javascript
Downloads
6
Readme
Install
npm i brighthas/model --save
Create Model
var createModel = require("model");
var User = createModel("User",
"name",
"age",
history,{type:"array"});
Config Model
User
.attr("name")
.attr("age")
.attr("history",{type:"array"});
Add method
User.method("getUserInfo",function(){
return "Name : " + this.name + "\n Age : " + this.age;
});
create Model object
var user = new User({ name:"leo" , age:20 , history: [] });
user.begin(); // begin update
user.name = "brighthas";
user.age = 30;
user.end(); // end update , then may emit 'changed' event.
update model
user.begin(); // begin update
user.name = "brighthas";
user.age = 30;
user.end(); // end update , then may emit 'changed' event.
console.log(this.hasError()); // true / false
console.log(this.errors); // [] is no error .
or
user.begin();
user.set({name:"leo",age:25});
user.end(); // end update , then may emit 'changed' event.
console.log(this.hasError()); // true / false
console.log(this.errors); // [] is no error .
or no use begin() & end()
user.name = 222 ;
console.log(this.hasError()); // true
// if have error , then can't change other value.
user.age = 16 ;
console.log(user.age) ; // no 16.
// so first clear errors.
user.errors = [];
user.age = 16;
console.log(user.age); // 16
toJSON | reborn
var jsonObj = user.toJSON();
var user2 = User.reborn(jsonObj); console.log(user.name === user2.name); // true
user2.name = "brighthas"; console.log(user.name === user2.name); // false
Type
if no assign type , default type="string" .
Two types : value type
and complex type
.
Value type
string
| array
| json
| boolean
| number
| date
| regexp
when get value , the value is clone .
var T = createModel("T",ts:{type:"json"});
var t = T();
t.userInfo = {name:"leo"};
var u1 = t.userInfo;
var u2 = t.userInfo;
console.log(u1 === u2); // false
Complex type
complex type can be Model
or object including Type.prototype.toJSON & Type.reborn function & emit changed
event.
when get value , the value is original value.
var User = createModel("User",
"name",
"age",
history,{type:"array"});
var T = createModel("T",user:{type:User}); // User is Model.
var t = T();
t.user = User({name:"leo",age:21});
var u1 = t.user; // the value is original value.
var u2 = t.user; // the value is original value.
console.log(u1 === u2); // true ,
or
function User(name,age,hisitory){
this.name = name;
this.age = age;
this.history = hisitory || [];
}
User.prototype.toJSON = function(){
return {
name:this.name,
age:this.age,
history:this.history
}
}
User.reborn = function(jsonObj){
return new User(jsonObj.name,jsonObj.age,jsonObj.history);
}
//////////////////////////////////////////
var T = createModel("T",user:{type:User});
var t = T();
t.user = User("leo",21);
var u1 = t.user; // the value is original value.
var u2 = t.user; // the value is original value.
console.log(u1 === u2); // true ,