Calling a controller method from within a directive in AngularJS is not possible

I'm currently developing a hybrid Ionic1 app and I am facing an issue with calling a controller method from within a directive. In the directive, I can pass variables from the controller (like the variable apps), but I am unable to call the removeCredentials() method inside the card-app directive.

I have tried various methods to resolve this problem, including using the & to bind the controller method within the directive. However, clicking on the X icon in the directive template does not trigger any action.

The current code structure is as follows:

Controller AppsCtrl in apps.js

angular.module('testprofile')
.controller('AppsCtrl', function($scope, $state, $log, $ionicHistory, $filter, $ionicPopup, UserData, CredentialStoreService, ionicMaterialMotion, ionicMaterialInk, Auth, Effects, CredentialStoreService, Globals, Validations) {

// Controller code here

})

Directives in inclusions.js

angular.module('testprofile')

.directive('cardProfile', function() {
    // Directive code for cardProfile
})

.directive('cardApp', function() {
    // Directive code for cardApp
})

.directive('pinRequired', function(Auth) {
    // Directive code for pinRequired
})

;

apps.html

<ion-view view-title="Apps">
  <ion-content padding="true" class="has-header bg-stable">

    // HTML markup for displaying apps

  </ion-content>
</ion-view>

card-app.html

 <ion-item
              menu-close=""
              class="card item-thumbnail-left item-icon-right app-item">
    // HTML markup for card-app

</ion-item>

Solution: The click event was not triggered due to missing CSS properties like pointer-events: auto; and cursor: pointer;. Adding these styles resolved the issue.

Answer №1

If you find yourself in a situation where your directive needs to call a single function from a parent controller, the best approach is to pass it as a parameter.

Firstly, ensure that the controller scope is accessible for the directive. You can achieve this by creating a simple method and calling it before the directive:

// Checking if the scope is set up correctly
<button ng-click="alertMethod()"></button>

<card-app ng-repeat='' card-source='' class='' my-method="alertMethod()"></card-app>

// Directive
//
scope: {
    myMethod: '&'
},
template: "<button ng-click='myMethod()'>Click</button>"

If the above method works, great! However, if the controller scope is not available, consider using named controllers:

https://docs.angularjs.org/api/ng/directive/ngController

Utilizing controller as clearly indicates which controller you are referencing in the template when multiple controllers are applied to an element.

Update your code as follows:

// Controller
this.alertMethod = function() {        
    alert('Hello');
}

// View
<div ng-app="myApp" ng-controller="testCtrl as ctrl">
<card-app ng-repeat='' card-source='' class='' my-method="ctrl.alertMethod()"></card-app>

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