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Multisite Network Administration functions
<?php
/*
Plugin Name: Texas A&M Multisite Network Administration
Version: 0.4.2
Plugin URI: https://github.tamu.edu/COE-wordpress/coe-network-admin
Description: Adds columns to the Network Sites list screen; subsite user login redirects.
Author: Stephanie Leary
Author URI: http://stephanieleary.com
GitHub Plugin URI: https://github.tamu.edu/COE-wordpress/coe-network-admin
GitHub Enterprise: https://github.tamu.edu
*/
// Default user roles
// Add new users to main site as subscriber
function tees_add_network_default_roles( $user_id ) {
global $current_site; // this is the main network site. Stupid variable name.
if ( !is_user_member_of_blog( $user_id, $current_site->blog_id ) )
add_user_to_blog( $current_site->blog_id, $user_id, 'subscriber' );
}
add_action( 'wpmu_activate_user', 'tees_add_network_default_roles', 10, 1 );
add_action( 'wpmu_new_user', 'tees_add_network_default_roles', 10, 1 );
add_action( 'user_register', 'tees_add_network_default_roles', 10, 1 );
// Login redirect
// Redirect to top-level dashboard (instead of profile) if not superadmin or not allowed on this blog
add_filter( 'login_redirect', 'tees_subsite_login_redirect', 100, 3 );
function tees_subsite_login_redirect( $redirect_to, $request_redirect_to, $user ) {
if ( !is_user_member_of_blog() || ( is_main_site() && !is_super_admin() ) )
return network_admin_url();
return $redirect_to;
}
// My Sites Dashboard widget
function tees_network_dashboard_widget_setup() {
add_meta_box(
'tees_dashboard_mysites_widget',
'My Sites',
'tees_dashboard_mysites_widget',
'dashboard',
'normal',
'high'
);
}
add_action( 'wp_dashboard_setup', 'tees_network_dashboard_widget_setup', 99 );
function tees_dashboard_mysites_widget() {
echo '<ul>';
$blogs = get_blogs_of_user( get_current_user_id() );
foreach ( $blogs as $blog ) {
echo '<li><a href="'. esc_url( get_admin_url( $blog->userblog_id ) ) .'" title="'. sprintf( esc_html__( '%s Dashboard', 'tees' ), $blog->blogname ) .'">'. esc_html( $blog->blogname ) .'</a></li>';
}
echo '</ul>';
}
// Admin columns
add_filter( 'wpmu_blogs_columns', 'tees_sites_admin_column_headers' );
add_action( 'manage_sites_custom_column', 'tees_sites_admin_add_columns', 10, 2 );
add_action( 'manage_blogs_custom_column', 'tees_sites_admin_add_columns', 10, 2 );
add_action( 'manage_sites-network_sortable_columns', 'tees_sites_admin_sort_columns' );
function tees_sites_admin_query_args( $args ) {
$args['orderby'] = 'uploads';
return $args;
}
function tees_sites_admin_sort_columns( $columns ) {
$columns['upload_size'] = 'uploads';
return $columns;
}
add_action( 'plugins_loaded', 'tees_sites_admin_filter_site_query' );
function tees_sites_admin_filter_site_query() {
global $pagenow;
if ( is_super_admin() && 'sites.php' == $pagenow && isset( $_REQUEST['orderby'] ) && 'uploads' == $_REQUEST['orderby'] )
add_filter( 'sites_clauses', 'tees_sites_clauses' );
}
function tees_sites_clauses( $query ) {
global $wpdb;
$query['fields'] = "*";
$query['join'] = " as b, {$wpdb->sitemeta} as m";
$query['where'] = "m.`meta_key` = 'upload_usage' AND b.`blog_id` = m.`site_id`";
$query['orderby'] = "CAST(m.meta_value AS UNSIGNED) DESC";
$query['groupby'] = 'b.`blog_id`';
return $query;
}
function tees_sites_admin_add_columns( $column_name, $blog_id ) {
switch ( $column_name ) {
case 'upload_size':
$usage = get_metadata( 'site', $blog_id, 'upload_usage', true );
if ( empty( $usage ) )
echo '0';
else
echo tees_sites_admin_filesize_format( $usage );
default; break;
}
return $column_name;
}
function tees_sites_admin_column_headers( $columns ) {
$columns['upload_size'] = __( 'Uploads' );
return $columns;
}
function tees_sites_admin_filesize_format( $size ) {
$units = array( 'B', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB');
$power = $size > 0 ? floor(log($size, 1024)) : 0;
return number_format($size / pow(1024, $power), 2, '.', ',') . ' ' . $units[$power];
}
// Run cron task to update site options with upload directory file size
add_action( 'update_network_counts', 'tees_sites_admin_filesize_cron_exec' );
function tees_sites_admin_filesize_cron_exec() {
global $wpdb;
$blogs = $wpdb->get_results( "SELECT blog_id FROM {$wpdb->blogs}", ARRAY_A );
if ( empty( $blogs ) )
return;
foreach ( (array) $blogs as $blogdetails ) {
$blog_id = absint( $blogdetails['blog_id'] );
if ( is_main_site( $blog_id ) ) {
$upload_dir = wp_upload_dir();
$upload_dir = $upload_dir['basedir'];
}
else
$upload_dir = ABSPATH . UPLOADBLOGSDIR . $blog_id . '/files';
$usage = get_dirsize( $upload_dir );
update_metadata( 'site', $blog_id, 'upload_usage', $usage );
sleep(1);
}
}
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