Computed property from controller to component doesn't work

@johnunclesam wrote:

Here is my code on EmberTwiddle:

https://ember-twiddle.com/cc6b2ef203c68c272ad29f460aca5432

I'm trying to set a computed property in a component on a property that changes in a controller.

I pass the property from controller to component like this:

{{my-posts category=category}}

but the computedProperty on the component doesn't work:

postsFiltered: Ember.computed('category', function () {
  console.log('computed postsFiltered() with category: ' + this.get('category'));
  this.set('myMessage', 'This is the message!');
}),

Why?

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