Angular validation directive not working properly - angularjs

Question

I am using custom angular directive for showing validation. Directive code is as below
angularFormsApp.directive('showErrors',['$timeout', function ($timeout) {
return {
restrict: 'A',
require: '^form',
link: function (scope, el, attrs, formCtrl) {
// find the text box element, which has the 'name' attribute
var inputEl = el[0].querySelector("[name]");
// convert the native text box element to an angular element
var inputNgEl = angular.element(inputEl);
// get the name on the text box so we know the property to check
// on the form controller
var inputName = inputNgEl.attr('name');
var helpText = angular.element(el[0].querySelector(".help-block"));
// only apply the has-error class after the user leaves the text box
inputNgEl.bind('blur', function () {
el.toggleClass('has-error', formCtrl[inputName].$invalid);
helpText.toggleClass('hide', formCtrl[inputName].$valid);
});
scope.$on('show-errors-event', function () {
el.toggleClass('has-error', formCtrl[inputName].$invalid);
});
scope.$on('hide-errors-event', function () {
$timeout(function () {
el.removeClass('has-error');
}, 0, false);
});
}
}
}]);
and Html is as below
<div class="container" id="login-form">
<img src="assets/img/logo-big.png">
<div class="row">
<div class="col-md-4 col-md-offset-4">
<div class="panel panel-default">
<div class="panel-heading">
<h2>Login Form</h2>
</div>
<div class="panel-body">
<form name="loginForm" class="form-horizontal" novalidate>
<div class="form-group mb-md" show-errors>
<div class="col-xs-12">
<div class="input-group">
<span class="input-group-addon">
<i class="ti ti-user"></i>
</span>
<input type="text" class="form-control" placeholder="Username" autocomplete="Off" ng-required="true" name="username" autofocus ng-model="loginUser.username">
</div>
<span class="help-block" ng-if="loginForm.username.$error.required">Username is required</span>
</div>
</div>
<div class="form-group mb-md" show-errors>
<div class="col-xs-12" >
<div class="input-group">
<span class="input-group-addon">
<i class="ti ti-key"></i>
</span>
<input type="password" class="form-control" placeholder="Password"
name="password"
ng-model="loginUser.password" autocomplete="Off"
ng-required="true">
</div>
<span class="help-block" ng-if="loginForm.password.$error.required">Password is required</span>
</div>
</div>
<div class="form-group mb-n">
<div class="col-xs-12">
Forgot password?
<div class="checkbox-inline icheck pull-right p-n">
<label for="">
<input type="checkbox"></input>
Remember me
</label>
</div>
</div>
</div>
</form>
</div>
<div class="panel-footer">
<div class="clearfix">
Register
Login
</div>
</div>
</div>
</div>
</div>
</div>
Controller code :
var loginController = function ($scope, $window, $routeParams, $uibModal, $location, $filter, $rootScope, DataService, SharedProperties) {
$rootScope.bodylayout = 'focused-form animated-content';
$scope.loginUser = {
username: "",
password:""
}
$scope.load = function () {
//getAppointmentInfo();
};
$scope.SubmitLoginForm = function () {
$scope.$broadcast('show-errors-event');
if ($scope.loginForm.$invalid)
return;
}
}
angularFormsApp.controller("loginController", ["$scope", "$window", "$routeParams", "$uibModal", "$location", "$filter", "$rootScope", "DataService", "SharedProperties", loginController]);
Now When I open form below input control validation span is displaying by default . When I click on Login button then its showing in red and working fine.
problem is it shouldn't show by default when Page is opend.. Please see image below

Answer 1

Instead of this
loginForm.password.$error.required
try this
(loginForm.$submitted || loginForm.username.$dirty) && loginForm.password.$error.required

Answer 2

Take a look at the ng-messages directive. Its fairly elegant. Example:
<form name="myForm">
<input type="text" ng-model="field" name="myField" required minlength="5" />
<div ng-messages="myForm.myField.$error">
<div ng-message="required">You did not enter a field</div>
<div ng-message="minlength">The value entered is too short</div>
</div>
</form>
You can then combine it with any form validation. Just place the error messages from the validators onto the elements $error object and they are automatically rendered in your UI.

Answer 3

I ended up here as part of my search for an issue. In my case I was using a directive with a changing minimum value like this:
ngOnChanges(changes: SimpleChanges) {
if (changes.minDate && this.control) {
this.control.updateValueAndValidity({ onlySelf: true });
}
}
This means that the form will not be updated, I removed onlySelf and it worked correctly.
this.control.updateValueAndValidity();
Just leaving this as a breadcrumb in case someone else does something similar.