CODEWITHSUNDEEP
ember.js
stevekane
stevekane

Reputation: 372

Ember Computed Property using JS apply()

I would like to make the following code work if at all possible. The goal is to have a computed property that depends on a list of strings by using Javascripts "apply" method.

https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/Function/apply

App.View = Em.View.extend
  myProps: ['content.prop1', 'content.prop2']
  myComputed : (->
    return "super valuable things"
  ).property.apply(@get("myCompted"), @get("myProps"))

So far...no luck. It just seems to reject my most earnest desire to make this work.

Any help would be supremely appreciated! Steve

Upvotes: 2

Views: 91

Answers (1)

DF_
DF_

Reputation: 3973

You don't need to use the apply function and I'm not sure why you think you need to do that. The property function only wants an argument of the property it depends upon. In this case it is 'myProps'. You do not need to get that property either, Ember will work it all our for you.

Take a look at this jsfiddle and you'll see what I mean. You can do all your manipulation of the array inside the myComputed property and the array will have been made available for you already.

App.ApplicationView = Em.View.extend({
    myProps: ['123', '456'],
    myComputed : function () {
        return this.get('myProps');
    }.property('myProps')
});

Upvotes: 2

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