function bp_dtheme_activity_template_loader() {
	// Bail if not a POST action
	if ( 'POST' !== strtoupper( $_SERVER['REQUEST_METHOD'] ) )
		return;

	$scope = '';
	if ( ! empty( $_POST['scope'] ) )
		$scope = $_POST['scope'];

	// We need to calculate and return the feed URL for each scope
	switch ( $scope ) {
		case 'friends':
			$feed_url = bp_loggedin_user_domain() . bp_get_activity_slug() . '/friends/feed/';
			break;
		case 'groups':
			$feed_url = bp_loggedin_user_domain() . bp_get_activity_slug() . '/groups/feed/';
			break;
		case 'favorites':
			$feed_url = bp_loggedin_user_domain() . bp_get_activity_slug() . '/favorites/feed/';
			break;
		case 'mentions':
			$feed_url = bp_loggedin_user_domain() . bp_get_activity_slug() . '/mentions/feed/';

			if ( isset( $_POST['_wpnonce_activity_filter'] ) && wp_verify_nonce( wp_unslash( $_POST['_wpnonce_activity_filter'] ), 'activity_filter' ) ) {
				bp_activity_clear_new_mentions( bp_loggedin_user_id() );
			}
			break;
		default:
			$feed_url = home_url( bp_get_activity_root_slug() . '/feed/' );
			break;
	}

	// Buffer the loop in the template to a var for JS to spit out.
	ob_start();
	locate_template( array( 'activity/activity-loop.php' ), true );
	$result['contents'] = ob_get_contents();
	$result['feed_url'] = apply_filters( 'bp_dtheme_activity_feed_url', $feed_url, $scope );
	ob_end_clean();

	exit( json_encode( $result ) );
}