This guide is all about the WordPress actions and WordPress filters (also name hooks) available in the plugin.

Each action or filter is detailed in its own document, with:

• Name
• Schematic
• Parameters
• Description
• php code to call it
• php code to catch it
• php code to use it

General

All actions and filters are defined as constants, in the class WpSolrFilters, in the file /wpsolr-search -engine/classes/wpsolr-filters.php.
We recommend that you use the constant, rather than it’s string value.

For instance, in your php code, use

use wpsolr\core\classes\WPSOLR_Events;
WPSOLR_Events::WPSOLR_FILTER_POST_CUSTOM_FIELDS

rather than

'wpsolr_filter_post_custom_fields'

Your declaration of the hook containing a reference to the php class WPSOLR_Events, it must be executed after the WPSOLR plugin is loaded.

For instance, in:

use wpsolr\core\classes\WPSOLR_Events;

if ( defined( 'WPSOLR_PLUGIN_SHORT_NAME' ) ) {
add_action( 'after_setup_theme', function () {
... declare your WPSOLR actions or filters here
} );
}

or in

use wpsolr\core\classes\WPSOLR_Events;

if ( defined( 'WPSOLR_PLUGIN_SHORT_NAME' ) ) {
add_action( 'admin_init', function () {
... declare your WPSOLR actions or filters here
} );
}