Ember: ArrayController computed property based on array item properties

Question

I have an ArrayContoller on which I want to set a boolean property based on the properties of its contents.

Plain-language description of the logic:

If the array contains any items with a property of isRetired equal to true, set the retiredShoes property of the ArrayController to true, otherwise, set the ArrayController retiredShoes property to false.

It seems like this should be a simple matter, but I haven't found a solution anywhere, and I'm still pretty new at this.

I'll put together a jsfiddle if necessary.

Here are the controllers for the array and the object:

App.ApplicationController = Ember.ArrayController.extend({
    sortProperties: ['title'],
    itemController: 'shoe',
    retiredShoes: function() {
        //how do I compute this sucker?
    }
});

App.ShoeController = Ember.ObjectController.extend({
    needs: ['application'],
    actions: {
        delete: function() {
            var shoe = this.get('model'),
                runs = shoe.get('runs');
            shoe.deleteRecord();
            shoe.save();
        },
        toggleRetired: function() {
            var shoe = this.get('model');
            shoe.toggleProperty('isRetired');
            shoe.save();
        }
    }
});

panta82 · Accepted Answer · 2014-05-30 00:17:21Z

2

Off top of my head, without jsbin. If there's a problem/bug, drop me a comment and I'll look it over again.

App.ApplicationController = Ember.ArrayController.extend({
    retiredShoes: function() {
        return this.get("model").isAny("isRetired", true);
    }.property("[email protected]")
});

answered May 30, 2014 at 0:17

panta82

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1 Comment

fedoroffn Over a year ago

The top of your head was exactly right. I KNEW it had to be simple. Many thanks, @panta82.

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