CODEWITHSUNDEEP
javascriptbackbone.jscollectionsmodel
spliter
spliter

Reputation: 12569

Listing instances of a Model in Backbone application

In my Backbone application I have a Model. Is there a way of getting all instances of this Model in the app if not all of the instances belong to same Collection? Some of the instances might not belong to any Collection at all.

WHY do I need to do this?

I have a namespaced models (let's say Order.Models.Entry). This is the model of the instances I am talking about. There are some collections like Order.Models.Entries that contain instances of Order.Models.Entry type. But instances get to this collection only when they are selected (with a certain attribute). Before being selected the models are just… well… models.

UPDATE

Obviously I could load every model I create to some allModels collection as it has been suggested in the comments. But the question is not really about a workaround but about exact lookup. The reason why I would like to avoid adding models to an uber-collection is that most of the models will be added to different collections anyway and I just wanted to avoid creating dummy collection for just tracking purpose.

Upvotes: 0

Views: 134

Answers (2)

Kyle R
Kyle R

Reputation: 716

Why don't you create a Collection (we'll call it allModels) and each time a model is created, do: allModels.add(model). That way, you can access the models, and if you destroy one it will remove itself from the collection.

Upvotes: 1

ekeren
ekeren

Reputation: 3458

No. There are a couple of good design reasons why you shouldn't be doing it. (encapsulation, not polluting the global scope, etc...)

If you still wish to have this solution you could just maintain a Gloabl list and have your Backbone.Model insert itself into this list, here is a quick solution:

var allMyModels = [] ;

var MyModel = Backbone.Model.extend({
   initialize:function(){
       allMyModels.push(this);
       // Some more code here
    },
     // also if you wish you need to remove self on close delete function
});
var x = new MyModel();
var y = new MyModel();

in the end of this code, allMyModels will have both models

Upvotes: 1

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