add favorit (not working since bp1.3)

add favorit post

<?php

//For the functions.php file

function my_bp_activity_is_favorite($activity_id) {
global $bp, $activities_template;
return apply_filters( 'bp_get_activity_is_favorite', in_array( $activity_id, (array)$activities_template->my_favs ) );
}

function my_bp_activity_favorite_link($activity_id) {
global $activities_template;
echo apply_filters( 'bp_get_activity_favorite_link', wp_nonce_url( site_url( BP_ACTIVITY_SLUG . '/favorite/' . $activity_id . '/' ), 'mark_favorite' ) );
}

function my_bp_activity_unfavorite_link($activity_id) {
global $activities_template;
echo apply_filters( 'bp_get_activity_unfavorite_link', wp_nonce_url( site_url( BP_ACTIVITY_SLUG . '/unfavorite/' . $activity_id . '/' ), 'unmark_favorite' ) );
}
?>

<?

//For single.php - put within the WP loop

global $bp;
$activity_id = bp_activity_get_activity_id( array(
'user_id' => $post->author_id,
'type' => 'new_blog_post',
'component' => 'blogs',
'item_id' => 1,
'secondary_item_id' => $post->ID
) );
?>

<?php if ( is_user_logged_in() ) : ?>
<?php bp_has_activities();
if ( !my_bp_activity_is_favorite($activity_id) ) : ?>
<a href="<?php my_bp_activity_favorite_link($activity_id) ?>" class="fav" title="<?php _e( 'Mark as Favorite', 'buddypress' ) ?>"><?php _e( 'Favorite', 'buddypress' ) ?></a>
<?php else : ?>
<a href="<?php my_bp_activity_unfavorite_link($activity_id) ?>" class="unfav" title="<?php _e( 'Remove Favorite', 'buddypress' ) ?>"><?php _e( 'Un-favorite', 'buddypress' ) ?></a><br>
<a href="<?php echo bp_loggedin_user_domain() . BP_ACTIVITY_SLUG . '/favorites/' ?>" style="font-size: 12px;">View Your Favorites</a>
<?php endif; ?>
<?php endif;?>