Adding Parse Push Notification

ionic-v1
1

I successfully embed parse push notification inside ionic app. I initialize parse plugin just after $ionicPlatform.ready. But my problem is I want to access parsePushPlugin functions inside my controllers but I am unable to do it. Below is my initialize code:

.run(function($ionicPlatform) {
$ionicPlatform.ready(function() {

window.parsePlugin.initialize(‘key’, ‘key’, function() {
window.parsePlugin.subscribe(‘SampleChannel’, function() {
window.parsePlugin.getInstallationId(function(id) {
}, function(e) {
});
}, function(e) {
});
}, function(e) {
});
if (window.cordova && window.cordova.plugins.Keyboard) {
cordova.plugins.Keyboard.hideKeyboardAccessoryBar(true);
}
if (window.StatusBar) {
// org.apache.cordova.statusbar required
StatusBar.styleDefault();
}
});
})

I want to access window.parsePlugin object inside my controllers but I am unable to access. Please somebody help me.