CODEWITHSUNDEEP
javascriptbackbone.js
Jesse Atkinson
Jesse Atkinson

Reputation: 11406

Backbone collection on events

I have a collection set on my view. I'd like to render any time the collection is changed. However, it appears that according to the Backbone API docs 'change' isn't a valid event for a collection. So I've currently got this.collection.on('add reset remove'); which isn't really ideal.

What's the recommended way to handle this? Is there a standard way to track all changes to a collection in Backbone?

Upvotes: 0

Views: 99

Answers (2)

Simon Boudrias
Simon Boudrias

Reputation: 44589

Collection don't have change events on their own. Although, they bubble the change events of their models.

So you can do:

this.collection.on("change");
// Or better
this.listenTo(collection, "change");

Relevant documentation: http://backbonejs.org/#Collection

Upvotes: 1

blockhead
blockhead

Reputation: 9705

Yes, you can use the all event. But why is what you have not ideal? Also, the change event will bubble up to the collection, so you can use that as well. Although typically you wouldn't update a collection view, but individual subviews representing each item.

Upvotes: 2

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