Question

I’ve a Backbone Collection initialized but calling invoke on collection doesn’t work. For some reason I’m getting JS error:

var vw = new SomeView(); // A view with function 'refresh'  
var col = new Backbone.Collection();  
col.add(vw);  
...  
setTimeout(function(){ col.invoke('refresh'); }, 1000); // Error: Cannot call method 'apply' of undefined

However, invoking method like isEmpty works fine

console.log("Is empty? ", col.isEmpty()); // prints: 'Is Empty? false'

It seems I’m missing something very obvious.

N.B: I’m not interested in calling each function and then invoking refresh on view object because that’s just clunky.

Answer 1

A collection in backbone is a list of models. So when you add a view to a collection internally it will call something like this col.add(Backbone.Model.extend(vw)). So it will create a new model with your view as constructor params. I f you wanna store your view in a list just use a JavaScript array or a smarter underscore collection