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<?php | |
/** | |
* This is a version of | |
* http://www.viper007bond.com/2011/09/20/code-snippet-add-a-link-to-latest-post-to-wordpress-nav-menu/ | |
* that supports multiple placeholders. In this case, the placeholder fetches | |
* the latest post from a particular category. | |
*/ | |
// Front end only, don't hack on the settings page | |
if ( ! is_admin() ) { | |
// Hook in early to modify the menu | |
// This is before the CSS "selected" classes are calculated | |
add_filter( 'wp_get_nav_menu_items', 'replace_placeholder_nav_menu_item_with_latest_post', 10, 3 ); | |
} | |
// Replaces a custom URL placeholder with the URL to the latest post | |
function replace_placeholder_nav_menu_item_with_latest_post( $items, $menu, $args ) { | |
// Loop through the menu items looking for placeholder(s) | |
foreach ( $items as $item ) { | |
$args = array( | |
'numberposts' => 1, | |
); | |
switch ( $item->url ) { | |
case '#latestpost-category-abc': | |
$args['category'] = 4; | |
break; | |
case '#latestpost-category-some-other-cat': | |
$args['category'] = 123; | |
break; | |
// Not one of our placeholders | |
default; | |
continue 2; | |
} | |
// Get the latest post | |
$latestpost = get_posts( $args ); | |
if ( empty( $latestpost ) ) | |
continue; | |
// Replace the placeholder with the real URL | |
$item->url = get_permalink( $latestpost[0]->ID ); | |
} | |
// Return the modified (or maybe unmodified) menu items array | |
return $items; | |
} |
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