Is it possible to access the value of an ng-model from two different controllers? While I am aware that using a service is one way to share data between controllers, I am struggling to figure out how to pass the value of an ng-model to a service for this purpose. Any suggestions or solutions would be greatly appreciated.
It is possible to access the ng-model variable using $rootScope, but this is generally not recommended.
<input ng-model="myVar" type="text">
In the controller:
$rootScope.myVar = $scope.myVar;
You can then access this in another controller as $rootScope.myVar
Note: Make sure to inject $rootScope in the controller.
To ensure communication between the two controller div's, consider placing them within a common parent element. Then, use $watch() to monitor changes in the model and utilize $emit() to notify the child controllers when changes occur.
For more information, check out the following links:
$watch reference
$emit reference
What is the reason for not utilizing a service in your application? Services play a crucial role in sharing data between different parts of the application. One approach to achieve this is by exposing the service on each controller and binding ng-model to that particular service.
JavaScript
angular.module('app', [])
.factory('User', [function () {
var service = {
username: null
};
return service;
}])
.controller('MainCtrl', ['$scope', 'User', function ($scope, User) {
$scope.User = User;
}])
.controller('SecondCtrl', ['$scope', 'User', function ($scope, User) {
$scope.User = User;
}]);
HTML
<div ng-controller="MainCtrl">
<input type="text" ng-model="User.username">
</div>
<div ng-controller="SecondCtrl">
<input type="text" ng-model="User.username">
</div>
Plunker: http://plnkr.co/edit/VSEHD970O0xWbu6OCPqB?p=preview
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