imvalid

This is a easy to use plugin to validate your JavaScript models (POJO). Check the examples to get an idea.

Install the plugin

If you are using it in your node project you can run the npm install to get this plugin

$ npm install imvalid

If you are not using it in node project than also you can install it through npm or get it from github repo and use the file imvalid.js

Model design with imvalid

var ValidationModel = require('imvalid'); //for client side use, you can autometically get this object in your global scope
//inheriting Person from ValidationModel
var Person = function (name,age) {
	ValidationModel.apply(this,arguments);
	this.name = name;
	this.age = age;
	this.email = null;
};

Person.prototype = Object.create(ValidationModel.prototype);

Person.prototype.validations={
	name:{
		rules:['required'],
		controlName:"Name"
	},
	age:{
		rules:['number'],
		controlName:"Age"
	}
}


//inheriting adult from Person
var Adult = function (name, age, email) {
	Person.apply(this,arguments);
	this.email = email;
}

Adult.prototype = Object.create(Person.prototype);

Adult.prototype.customValidators = {
	customEmail:function (obj, email) {
		if(!email || email.length<6)
			return{
				code:1111,
				msg:"email should be longer than 6 char"
			}
	}
}
Adult.prototype.validations={
	email:{
		rules:['required','customEmail'],
		controlName:"Email"
	}
}


//inheriting unknown person from Person
var UnknownPerson = function (name, age, country) {
	Person.apply(this,arguments);
	this.foundIn = country;
}

UnknownPerson.prototype = Object.create(Person.prototype);

UnknownPerson.prototype.validations={
	email:null, //removing the validation for email. Base class had it
	name:null, //removing the validation for name. Base class had it
	foundIn:{
		rules : ["required"],
		messages : ["Please provide @controlName"],
		controlName : "Found in country"
	}
}

Using this model

var me = new Person("Paul");
me.validate(); //validate me
if(me.isValid){
	console.log("me is valid");
}
else{
	console.log("me is invalid");
	console.log(me.validationErrors); // this is an array of validation errors
}


var he = new UnknownPerson("Shan");
he.validate(); //validate he
if(he.isValid){
	console.log("he is valid");
}
else{
	console.log("he is invalid");
	console.log(he.validationErrors); // this is an array of validation errors
}