What is the best way to invoke a function from one controller in angularjs to another controller?

I am trying to implement a solution where I need to call the Listing function of testController from userController. I have placed a marker (//) in the code snippet below to indicate where I want to make this function call. This implementation is being done using angularjs.

function userController($scope, $http) {

                $scope.SignUp = function() {

                    $http.post('<?php echo site_url('angularjs/addToTable'); ?>', {'uname': $scope.username, 'pswd': $scope.userpassword, 'email': $scope.useremail}
                    ).success(function(data, status, headers, config) {

                        // Implementing function call to the Listing function of testController here...
                    });
                }
    }
    function testController($scope, $http) {
        $scope.Listing = function() {
                    $scope.users = [];
                    $http.get('<?php echo site_url('angularjs/get_list'); ?>').success(function($data) {

                        $scope.users = $data;
                    });
                }
    }

Answer №1

By nesting these two controllers in your markup, you enable the child controller to access functions from the parent scope. If you choose not to nest them, the function may be better suited for a service, provider, or factory rather than a controller.

<div ng-controller="parentController">
  <div ng-controller="childController">

  </div>
</div>

Answer №2

If you want to streamline your app, consider creating services that can be passed to your controllers. For example, you could set up a service called userManagement:

myApp.service('UserManagement', function() {
    this.fetchUsers = function() {
        // code to retrieve users
    }

    this.addUser = function() {
        // logic for adding new user 
    }
  });

Once defined, this service can be used in your controller like so:

appController($scope, $http, UserManagement){
 // implement functions here
}

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