Override search field values in GravityView

gravityview-override-search-values.php

<?php
/**
 * This is as shown in the video here: https://www.loom.com/share/68f01c9661264f30bb43e9f5346c7b83
 */

/**
 * @param \GravityView_Widget_Search $search_obj GravityView Widget instance
 */
add_action( 'gravityview_search_widget_fields_before', function( $search_obj ) {

	// Only override search field values when a URL parameter is passed.
	// If you always want to override, delete the following line.
	if ( ! isset( $_GET['example'] ) ) { return; }
	
	foreach( $search_obj->search_fields as $key => &$search_field ) {

		switch( $search_field['key'] ) {
			case 'search_all':
				$search_field['value'] = 'Search all override';
				break;
			case '1':
				$search_field['value'] = 'Duration override';
				break;
		}
	}

} );