Created
September 30, 2014 10:26
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Using Angular 1.3 Forms with $validators, ngMessages, $pending, $touched Src: http://www.htmlxprs.com/post/11/angularjs-1.3-form-validation-tutorial
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| <html ng-app="demoApp"> | |
| <script type="text/javascript"> | |
| angular.module('demoApp', ['ngMessages']); // include ngMessages module | |
| angular | |
| .module('htmlxprs', []) | |
| .directive('usernameValidator', function () { | |
| return { | |
| restrict: 'AE', | |
| require: 'ngModel', | |
| link: function ($scope, elem, attrs, ngModel) { | |
| ngModel.$validators.username = function (modelValue, viewValue) { | |
| var value = modelValue || viewValue; | |
| return /^[a-zA-Z0-9]+$/.test(value); | |
| }; | |
| } | |
| }; | |
| }) | |
| .directive('usernameAvailability', function () { | |
| return { | |
| restrict: 'AE', | |
| require: 'ngModel', | |
| link: function ($scope, elem, attrs, ngModel) { | |
| ngModel.$asyncValidators.usernameAvailability = function (modelValue, viewValue) { | |
| var value = modelValue || viewValue; | |
| return usernameService.checkAvailability(value); | |
| }; | |
| } | |
| }; | |
| }); | |
| </script> | |
| <body ng-controller="validatorCtrl"> | |
| <form name="demoForm"> | |
| Username: | |
| <!-- $validator: username-validator checks if available--> | |
| <input type="text" name="username" ng-model="username" username-validator ng-required="true"/> | |
| <!-- $pending: display message while validating (!exists & proper characters --> | |
| <span ng-show="demoForm.username.$pending">Checking Availability . . .</span> | |
| <!-- Show messages with ngMessages when $touched || submitted --> | |
| <div class="messages" ng-messages="demoForm.username.$error" | |
| ng-if="demoForm.username.$touched || demoForm.$submitted"> | |
| <div class="error-message" ng-message="required">Username is required.</div> | |
| <div class="error-message" ng-message="username">Username must contain only letters and numbers.</div> | |
| <div class="error-message" ng-message="usernameAvailability">Sorry! The username has been taken.</div> | |
| </div> | |
| </form> | |
| </body> | |
| </html> |
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