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up vote 0 down vote favorite

I have situation where I want to use $rootScope variable and update its value with the one entered in input field. I have sitauation code shortened to this DEMO:

HTML:

<div ng-controller="MyCtrl">
    <input type="text" ng-model="foo" placeholder="Enter something" />
    <input type="button" ng-click="doSomething()" value="Send" ng-disabled="foo == null" />
</div>

SCRIPT:

var myApp = angular.module('myApp', []);

function MyCtrl($scope, $rootScope) {
    $rootScope.foo = null;
    $scope.doSomething = function () {
        alert("Hello, " + $rootScope.foo);
    }
}

Any suggestions on how to pass input value to $rootScope variable would be great!

share|improve this question
5  
Why are you trying to do this? $rootScope should not be used for holding data. Use a service. – R. Salisbury 59 mins ago
    
I do actually need to share this value between two controllers and I have 0 practice with services, as I am new to angular. – Mindaugas Jačionis 27 mins ago

2 Answers 2

up vote 1 down vote accepted

Although not recommended, Still if you want you can do it the following way

<div ng-controller="MyCtrl">
    <input type="text" ng-model="foo" placeholder="Enter something" ng-change="onFooChange()" />
    <input type="button" ng-click="doSomething()" value="Send" ng-disabled="foo == null" />
</div>

Script

var myApp = angular.module('myApp', []);

function MyCtrl($scope, $rootScope) {
    $rootScope.foo = null;

    $scope.onFooChange = function(){
     $rootScope.foo = angular.copy($scope.foo);
    }

    $scope.doSomething = function () {
        alert("Hello, " + $rootScope.foo);
    }
}

When the value of text field is changed onFooChange function is called and the value is stored into $rootScope.

share|improve this answer
up vote 0 down vote

Here is an approach without using ng-change:

function MyCtrl($scope, $rootScope) {
    $scope.foo=null;
    $scope.doSomething = function () {
    $rootScope.foo=$scope.foo;
        alert("Hello, " + $rootScope.foo);
    }
}
share|improve this answer

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