Trigger an action on the change event with Ember.js checkbox input helper?

Question

How can I fire a named action upon changing a checkbox in Ember.js? Any help will be greatly appreciated.

Here is what I have. Checking or unchecking the checkbox has no effect.

Template:

{{input type="checkbox" on="change" action="applyFilter"}}

Controller:

actions: {
    applyFilter: function() {
        console.log("applyFilter");
    }
}

question from:https://stackoverflow.com/questions/24154974/trigger-an-action-on-the-change-event-with-ember-js-checkbox-input-helper

Answer 1

using an observer seems like the easiest way to watch a checkbox changing

Template

{{input type='checkbox' checked=foo}}

Code

  foo:undefined,
  watchFoo: function(){
    console.log('foo changed');
  }.observes('foo')

Example

http://emberjs.jsbin.com/kiyevomo/1/edit

Or you could create your own implementation of the checkbox that sends an action

Custom Checkbox

App.CoolCheck = Ember.Checkbox.extend({
  hookup: function(){
    var action = this.get('action');
    if(action){
      this.on('change', this, this.sendHookup);
    }
  }.on('init'),
  sendHookup: function(ev){
    var action = this.get('action'),
        controller = this.get('controller');
     controller.send(action,  this.$().prop('checked'));
  },
  cleanup: function(){
    this.off('change', this, this.sendHookup);
  }.on('willDestroyElement')
});

Custom View

{{view App.CoolCheck action='cow' checked=foo}}

Example

http://emberjs.jsbin.com/kiyevomo/6/edit