Usage with Marionette: on filtering, renders individual ItemView(s) and not Composite/Collection view

[miketeix]

Hi there,

Currently, when I add a filter to my obscura collection, the filtered models are being rendered into views one by one, and not by the CompositeView as a collective whole.

I need an event hook for when all the views have finished rendering, and because itemViews are being rendered individually, I don't have a way of knowing when that is.

Collection/Composite views have various onRender events that I could use, except they're not being triggered.

[jmorrell]

This sounds like more of a Marionette issue. Can you not use collection:rendered? https://github.com/marionettejs/backbone.marionette/blob/master/src/marionette.collectionview.js#L87

In theory the models should be added in a .reset all at once when you change filters. Am I missing something? https://github.com/jmorrell/backbone-filtered-collection/blob/master/index.js#L68

If that doesn't solve your problem, can you speak a bit more about what you're trying to do? I could add a filtered:done event or similar, but I want to make sure I understand the use case.

[miketeix]

Unfortunately neither onCollectionRender nor onCompositeRender are fired once I filter, although I know they're working because they both fire when I first render the Composite View.

Oddly, I can hook into the Collection reset event, but because it doesn't trigger the CollectionView render event, only the ItemView render events, I have no idea when all the views are re-rendered.

I can always, re-render the whole CompositeView, but I'd be rendering views essentially twice.

Perhaps its a Marionette thing - I thought that if the collection resets that the CompositeView would be listening and re-render.

I don't think filtered:done would do me any good, as it would be the same as the Collection reset event which I have. My use case is typical I'd imagine - I've got a collection of slides that are being filtered, after the collection is reset, I'd like to re-render the CompositeView as a whole, but instead am rendering the individual ItemViews. I need to know when they've all finished rendering because I need to re-initialize a Slider plugin at that point.

[miketeix]

So I found a decent enough workaround for my purposes without having to re-render my composite view manually.

onCompositeRendered is still mysteriously not firing, and oddly, neither is onCollectionRendered but I just discovered onCompositeCollectionRendered is firing after applying the filter, and it fires after all the individual views have been rendered, which is what I need.

Thanks for getting back to me, and for putting together this sweet plugin. I'm looking forward to using it finally.