AngularJs - communication between controller and directive

AngularJs - communication between controller and directive

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AngularJs - communication between controller and directive
Tag : angularjs , By : John R
Date : November 28 2020, 04:01 AM

wish of those help the following change is required to solve the problem in directive.js
(function (App) {
App.directive("ngPatternPre", ['toastr', function (toastr) {
    return {
        restrict: 'E',
        templateUrl: '/views/Directives/NgPattern.html',
        link: function (scope, element, attrs) {                

            scope.SwatchCartList = function (pId) {


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AngularJS communication between controller and directive

Tag : javascript , By : cmhudson
Date : March 29 2020, 07:55 AM
Any of those help The simplest way to accomplish this is to make both your controller and directive get importantValue and create() from a service.
angular.module(/* Your module */).service('sharedData', function () {
    return {
        importantValue: "value",
        create: function () {
            console.log("Directive works...");

Directive to directive communication : controller empty ( ={ } )- AngularJS

Tag : javascript , By : Ohad Barzilay
Date : March 29 2020, 07:55 AM
To fix this issue The problem is that inside your popupController you only add the functions to the $scope, but not the controller itself. Change to the following inside your popupController:
  this.manageError = $scope.manageError = function(message) {
    if ($scope.hasNotifier())
        $scope.errorMessage = message;

AngularJS directive to directive communication throwing an error about controller not found

Tag : javascript , By : gcomstock
Date : March 29 2020, 07:55 AM
To fix the issue you can do In order for one directive to use another's controller by use of require, it needs to either share the same element as the controller containing directive, or it has to be a child of it.
You can't use require in the way you have, where the elements are siblings.

AngularJS communication from controller to directive

Tag : javascript , By : afds
Date : March 29 2020, 07:55 AM
To fix the issue you can do My question is about the communication from a controller to a directive created in the context of that controller. In particular, I'm interested in what's the recommended/best approach in this situation. I can think of three different possibilities: , My personal preference would be to use an event.
Using watch

Communication between directive and controller angularjs

Tag : angularjs , By : niel
Date : March 29 2020, 07:55 AM
Does that help I would like to know if it is possible to send the user some kind of error message when the email already exist. I have some directive like this. : , Yes you can directly show error message into the HTML.
try this,
<form name="form" ng-submit="!form.$pending && form.$valid && vm.register()" role="form">
                <label for="email">Email</label>
                <input type="text" name="email" id="email" class="form-control" ng-model="vm.user.email" email-not-used ng-model-options="{ debounce: 500 }" required  >
                 <span ng-show="form.email.$invalid && form.email.$dirty">Email is already in use!</span>
                 <span ng-show="form.email.$valid && form.email.$dirty">Email available!</span>

            <div class="form-actions">
                <button type="submit" ng-disabled="form.$invalid || vm.dataLoading" class="btn btn-primary">Register</button>
                <a href="#/login" class="btn btn-link">Cancel</a>
var app = angular.module('app', []);


    emailNotUsed.$inject = ['$http', '$q'];

function emailNotUsed ($http, $q) {
    return {

        require: 'ngModel',
        link: function(scope, element, attrs, ngModel) {
            ngModel.$asyncValidators.emailNotUsed = function(modelValue, viewValue) {
                  var data='';
                  if (viewValue=='abc@xyz.com'){
                      ngModel.$setValidity('valid', false);
                       scope.form.email.$setValidity('email', false);

                       ngModel.$setValidity('valid', true);
                       scope.form.email.$setValidity('email', true);

                return data;

    app.controller('RegisterController', RegisterController);

    RegisterController.$inject = ['$scope', '$http','$q' ];
    function RegisterController($scope, $http,$q) {
        var vm = this;
    $scope.name = 'abc@xyz.com email is already in use ';
        vm.register = register;

        function register() {

           vm.dataLoading = true;


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