JetSmartFilters Get range filter min/max from CCT

code.php

<?php

add_filter( 'jet-smart-filters/range/source-callbacks', function( $callbacks ) {
	
	$callbacks['jet_smart_filters_cct_values'] = 'Get from CCT field';
	return $callbacks;
	
} );

add_filter( 'jet-smart-filters/filter-instance/args', function( $args ) {
	
	$key = $args['query_var'];
	
	if ( 'range' == $args['query_var_suffix'] && false !== strpos( $key, 'cct_range::' ) ) {
		$key_array = explode( '::', $key );
		$args['query_var'] = end( $key_array );
	}
	
	return $args;
} );

function jet_smart_filters_cct_values( $args ) {
	
	$key = ! empty( $args['key'] ) ? $args['key'] : false;
	
	if ( ! $key ) {
		return array();
	}
	
	if ( false === strpos( $key, 'cct_range::' ) ) {
		return array();
	}
	
	global $wpdb;
	$prefix = $wpdb->prefix;
	
	$key_array = explode( '::', $key );
	
	$type  = $key_array[1];
	$field = $key_array[2];
	$table = $prefix . 'jet_cct_' . $type;
	
	$sql  = "SELECT min( FLOOR( $field ) ) AS min, max( CEILING( $field ) ) AS max FROM $table";
	$data = $wpdb->get_results( $sql, ARRAY_A );
	
	if ( ! empty( $data ) ) {
		return $data[0];
	} else {
		return array();
	}
	
}