Validating Password And Confirm Password Fields Whenever One Or The Other Fields Model Changes (Each Keystroke) With Angular Directive
Just change the last check:
ngModel.$setValidity('passwordVerify', !val1 || !val2 || val1 === val2);
to:
ngModel.$setValidity('passwordVerify', val1 === val2);
Here's a working version:
(function() {
"use strict";
angular
.module('app', ['ngMessages'])
.controller('mainCtrl', mainCtrl)
.directive('passwordVerify', passwordVerify);
function mainCtrl($scope) {
// Some code
}
function passwordVerify() {
return {
restrict: 'A', // only activate on element attribute
require: '?ngModel', // get a hold of NgModelController
link: function(scope, elem, attrs, ngModel) {
if (!ngModel) return; // do nothing if no ng-model
// watch own value and re-validate on change
scope.$watch(attrs.ngModel, function() {
validate();
});
// observe the other value and re-validate on change
attrs.$observe('passwordVerify', function(val) {
validate();
});
var validate = function() {
// values
var val1 = ngModel.$viewValue;
var val2 = attrs.passwordVerify;
// set validity
ngModel.$setValidity('passwordVerify', val1 === val2);
};
}
}
}
})();
<html ng-app="app">
<head>
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.5.7/angular.min.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.6/css/bootstrap.min.css" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.2.4/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.6/js/bootstrap.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular-messages/1.5.7/angular-messages.min.js"></script>
</head>
<body ng-controller="mainCtrl">
<form name="add_user_form">
<div class="col-md-12">
<div class="form-group" ng-class="{ 'has-error' : add_user_form.user_password.$dirty && add_user_form.user_password.$invalid }">
<p class="help-text">Enter password</p>
<input type="password" class="form-control" id="user_password" name="user_password" placeholder="password" required ng-model="user.user_password" password-verify="{{user.confirm_password}}">
<div class="help-block" ng-messages="add_user_form.user_password.$error" ng-if="add_user_form.user_password.$dirty">
<p ng-message="required">This field is required</p>
<p ng-message="minlength">This field is too short</p>
<p ng-message="maxlength">This field is too long</p>
<p ng-message="required">This field is required</p>
<p ng-message="passwordVerify">No match!</p>
</div>
</div>
<div class="form-group" ng-class="{ 'has-error' : add_user_form.confirm_password.$dirty && add_user_form.confirm_password.$invalid }">
<p class="help-text">Enter matching password</p>
<input class="form-control" id="confirm_password" ng-model="user.confirm_password" name="confirm_password" type="password" placeholder="confirm password" required password-verify="{{user.user_password}}">
<div class="help-block" ng-messages="add_user_form.confirm_password.$error" ng-if="add_user_form.confirm_password.$dirty">
<p ng-message="required">This field is required</p>
<p ng-message="minlength">This field is too short</p>
<p ng-message="maxlength">This field is too long</p>
<p ng-message="required">This field is required</p>
<p ng-message="passwordVerify">No match!</p>
</div>
</div>
</div>
</form>
</body>
</html>
I hope it helps.