Getting $scope object in Angular's run() method

Question

I\'d like to do some stuff when my app loads to set up the default state. So I\'m trying to use the run method on the Module object. When I try to access the $scope variable

Answer 1

app.run(function ($rootScope) {
    $rootScope.someData = {message: "hello"};
});

You can only get $rootScope injected to services and run function, because each child scope is inherited from its parent scope and the top level scope is rootScope. Since it would be ambigous to inject any scope. Only root scope is provided.

Answer 2

var app = angular.module('myApp', []);
app.run(function ($rootScope) {
    // use .run to access $rootScope
    $rootScope.rootProperty = 'root scope';
});

app.controller("ParentCtrl", ParentCtrlFunction);
app.controller("ChildCtrl", ChildCtrlFunction);
function ParentCtrlFunction($scope) {
    // use .controller to access properties inside ng-controller
    //in the DOM omit $scope, it is inferred based on the current controller
    $scope.parentProperty = 'parent scope';
}
function ChildCtrlFunction($scope) {
    $scope.childProperty = 'child scope';
    //just like in the DOM, we can access any of the properties in the
    //prototype chain directly from the current $scope
    $scope.fullSentenceFromChild = 'Same $scope: We can access: ' +
    $scope.rootProperty + ' and ' +
    $scope.parentProperty + ' and ' +
    $scope.childProperty;
}  

for Eg. https://github.com/shekkar/ng-book/blob/master/7_beginning-directives/current-scope-introduction.html

It is simple flow ,we have rootScope,parentScope,childScope .in each section we are assigning the corresponding scope variables.we can access the $rootScope in parentScope, rootScope and parentScope in childScope.