What is WordPress Hook: pre_get_sites
The pre_get_sites hook is a WordPress action hook that allows developers to modify the parameters used to query sites before the query is executed.
Understanding the Hook: pre_get_sites
The pre_get_sites hook is located within the WordPress query process and is triggered before the query is executed. This allows developers to modify the parameters used to query sites, such as the number of sites to retrieve, the order in which they are retrieved, and any additional parameters.
Hook Parameters (if applicable): pre_get_sites
The pre_get_sites hook accepts a single parameter, which is an instance of the WP_Site_Query class. This parameter allows developers to modify the query parameters using methods provided by the WP_Site_Query class.
Hook Doesn’t Work: pre_get_sites
If the pre_get_sites hook doesn’t work as expected, it may be due to incorrect usage of the WP_Site_Query class methods or conflicting with other hooks or filters that modify the site query parameters. To troubleshoot, developers should review their implementation of the hook and ensure that it is not being overridden by other code.
Best Practices & Usage Notes (if applicable): pre_get_sites
When using the pre_get_sites hook, developers should be mindful of the potential impact on site queries and performance. Modifying query parameters should be done judiciously to avoid unnecessary strain on the server. Additionally, developers should be aware of any other hooks or filters that may also modify site query parameters to prevent conflicts.
Usage Example: pre_get_sites
“`php
function custom_site_query( $query ) {
if ( $query->is_main_query() && ! is_admin() ) {
$query->set( ‘number’, 10 );
$query->set( ‘orderby’, ‘name’ );
}
}
add_action( ‘pre_get_sites’, ‘custom_site_query’ );
“`
