The iron:router hooks

The following table contains a list of router controller hooks:

action	This function can overwrite the default behavior of the route. If we define this function, we have to manually render the template using this.render().
onBeforeAction	This function runs before the route gets rendered. Here, we can put extra custom actions.
onAfterAction	This function runs after the route gets rendered. Here, we can put extra custom actions.
onRun	This function runs once when the route is first loaded. This function doesn't run again on a hot code reloads or when the same URL is navigated again.
onRerun	This function will be called every time the route is called.
onStop	This function runs once when leaving the current route to a new route.
subscriptions	This function can return subscription(s) that affect this.ready() in the action hooks
waitOn	This function can return subscription(s), but will automatically render the loadingTemplate until those are ready.
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