Marionette module not firing 'start' event

Question

I have create a marionette module like this

App.module("HeaderApp", function (HeaderApp, App, Backbone, Marionette, $, _) {
    HeaderApp.on('start', function () {
        ...do something....
    });
});

When I call App.module("HeaderApp").start() the event listener does not fire, however if I manually trigger the event it will run.

Reading the marionette documentation it seems as though this should work. Any ideas?

Answer 1

More than likely, it's because the module auto-starts with the app and is therefore already running by the time you register the event listener.

To prevent auto start, set startWithParent to false ( https://github.com/marionettejs/backbone.marionette/blob/master/docs/marionette.application.module.md#preventing-auto-start-of-modules ) :

App.module("HeaderApp", function (HeaderApp, App, Backbone, Marionette, $, _) {
    HeaderApp.startWithParent = false;

    HeaderApp.on('start', function () {
        ...do something....
    });
});

Then it should work as you expect.