javascript - Destroying objects in Ember.js - Stack Overflow

admin管理员组

文章数量:1322190

Imagine I create an ember object, then add it to an arbitrary unknown number of array controllers. Is there a simple way of destroying the object so that all the array controllers get notified and remove it?

/

destroy from Ember.CoreObject doesn't seem to notify the collections that their objects have been destroyed, or the collections don't remove their objects. I'm not even sure if they're meant to or not.

Imagine I create an ember object, then add it to an arbitrary unknown number of array controllers. Is there a simple way of destroying the object so that all the array controllers get notified and remove it?

http://jsfiddle/FcsRP/

destroy from Ember.CoreObject doesn't seem to notify the collections that their objects have been destroyed, or the collections don't remove their objects. I'm not even sure if they're meant to or not.

• javascript
• ember.js
• destroy

Share Improve this question Follow edited May 10, 2012 at 21:35 mattvonb 19011 silver badge55 bronze badges asked Apr 29, 2012 at 22:39 user1158559user1158559 1,95311 gold badge1818 silver badges2424 bronze badges

Add a ment  | 

1 Answer 1

Sorted by: Reset to default 7

The easiest way that I can think of is adding an observer on the object's isDestroyed property. That way when you destroy something and that property bees true you can run whatever code you need to.

See this jsfiddle: http://jsfiddle/ud3323/FSCyF/

Code:

obj = Ember.Object.create({});

a1 = Ember.ArrayController.create({
    content: [],
    destroyedObj: function() {
        alert('destroyed obj observer in a1');
  }.observes('[email protected]')
});
a2 = Ember.ArrayController.create({
    content: [],
    destroyedObj: function() {
        alert('destroyed obj observer in a2');
  }.observes('[email protected]')
});

a1.pushObject(obj);
a1.pushObject(obj);
a2.pushObject(obj);

obj.destroy()

alert(a1.get('content').length)

本文标签： javascriptDestroying objects in EmberjsStack Overflow