handling listeners with listenTo()

[galki]

I'm confused about the below code and would appreciate any help!

var Layout = Marionette.LayoutView.extend({
    initialize: function() {
        var channel = Backbone.Radio.channel('myChannel');
        // this succeeds (when calling with trigger())
        this.listenTo(channel, 'myTriggerEvent', this.mySetMethod);
        // this also succeeds (when calling with trigger())
        channel.on('myTriggerEvent', this.mySetMethod);

        // this fails (when calling with request())
        this.listenTo(channel, 'myRequestEvent', this.myGetMethod);     
        // this succeeds (when calling with request())
        channel.reply('myRequestEvent', this.myGetMethod);
    },

    mySetMethod: function(value) {
        console.log(value);
    },

    myGetMethod: function() {
        return 'some value';
    }
});

My questions are:

• Is listenTo preferred or will setting a listener directly on Radio still allow Marionette to remove the listener upon view removal?
• Does a reply inside a listenTo fail because it's not an on? Will Marionette ever support Radio replies inside listenTo?

I'm using Radio 1.0.0 and Marionette 2.4.1

[jamesplease]

Is listenTo preferred or will setting a listener directly on Radio still allow Marionette to remove the listener upon view removal?

When a view is destroyed, stopListening is called. stopListening removes any event registered through listenTo, but not on.

Accordingly, if you would automatic event cleanup when the view is destroyed, then you'll want to listenTo your Channels.

Does a reply inside a listenTo fail because it's not an on?

Yes, listenTo is an API of Backbone.Events. Radio Requests are a completely separate thing.

Will Marionette ever support Radio replies inside listenTo?

No, because listenTo is a part of Backbone.Events. See #117 for a discussion of the equivalent for Requests.