blogs-menu.php

<?php

// This code was used to generate a menu showing all blogs on a WordPress
// Multisite installation.

// projects_menu() was used in the template to show a dropdown menu on all the
// sites.

// The shortcode [bloglist] was used in the homepage of the main blog to link to
// all the other blogs.


// Output a single menu item
function projects_menu_entry($id, $title, $link_self)
{
    global $blog_id;

    if ($id == $blog_id && !$link_self)
        return;

    echo '<li>';

    if ($id == $blog_id)
        echo '<strong>';

    $url = get_home_url($id);
    if (substr($url, -1) != '/') {
        // Note: I added a "/" to the end of the URL because WordPress
        // wasn't doing that automatically in v3.0.4. YMMV.
        $url .= '/';
    }
    echo '<a href="' . $url . '">' . $title . '</a>';

    if ($id == $blog_id)
        echo '</strong>';

    echo '</li>';
}

// Output the whole menu
// If $link_self is false, skip the current site -
// used to display the menu on the homepage
function projects_menu($link_self = true)
{
    global $wpdb;

    echo '<ul>';

    projects_menu_entry(1, 'Home', $link_self);

    $blogs = $wpdb->get_results("
        SELECT blog_id
        FROM {$wpdb->blogs}
        WHERE site_id = '{$wpdb->siteid}'
        AND spam = '0'
        AND deleted = '0'
        AND archived = '0'
        AND blog_id != 1
    ");

    $sites = array();
    foreach ($blogs as $blog) {
        $sites[$blog->blog_id] = get_blog_option($blog->blog_id, 'blogname');
    }

    natsort($sites);
    foreach ($sites as $blog_id => $blog_title) {
        projects_menu_entry($blog_id, $blog_title, $link_self);
    }
    echo '</ul>';
}

// Adds a [bloglist] shortcode, so I can embed the menu into the static homepage.
// Note: I originally put it directly into the template, but that didn't work
// with WPtouch.
add_shortcode('bloglist', function($atts)
{
    projects_menu(false);
});