Ember communicate between view components and controllers

I have a dashboard and inside it some buttons for filter to posts.

This dashboard appear in all pages, so I a create a view dashboard with a template of same name.

to trigger filter, I have created an view filter-button:

export default Ember.View.extend(Ember.TargetActionSupport, {
  tagName: 'button',
  click(event) {
    this._toggleComponentState();
    this._dispatchAction();
  },
  _dispatchAction() {
    this.triggerAction({
      action: "filter",
      target: this.get('controller'),
      actionContext: this.get('context')
    });
  },
  _toggleComponentState() {
    this.$().toggleClass('active');
  }
});

this action filter this sent to application controller, but I need send to an specific controller posts.index, hierarchically posts and dashboard have no connection. how can I create a communication correctly between my components?