Should I use different Backbone classes or different instances for each list?

Question

I'm using Backbone.js

I have multiple lists of models on my page. Should I just make one "class" with Backbone.Collection.extend and my lists should be instances of this "class", or should I make as many classes as I have model lists on my page?

So, should I do this:

var MyCol1 = new Backbone.Collection.extend({})
var MyCol2 = new Backbone.Collection.extend({})

var listView1 = new ItemsView({ collection: new MyCol1 })
var listView2 = new ItemsView({ collection: new MyCol2 })

or rather this?

var MyCol = Backbone.Collection.extend({})
var listView1 = new ItemsView({ collection: new MyCol })
var listView2 = new ItemsView({ collection: new MyCol })

Behavior of all lists will be pretty much the same at this point but they will have different backend urls they'll be attached to.

Yes. Same sort of things. But different selection of things and in different arrangement. — Kamil Szot, Sep 07 '12 at 05:30

score 1 · Accepted Answer · edited May 23 '17 at 12:12

If something is differente you will find you need two different classes, or you'll find your self in a hell of conditional sentences.

You can use a custom BaseCollection with the common behavior and inherit from it for the detailed behavior. Check things like:

Should I use different Backbone classes or different instances for each list?

1 Answers1