rest-api-filter-example.php

<?php
/**
 * Callback will be applied for each field of each CCT item in the REST API response
 * cct_slug - change this with your actual CCT slug
 * _cct_field_name - change this with your actual field name
 */
add_filter( 'jet-engine/custom-content-types/rest-api/filters/cct_slug', function( $filters ) {
	$filters['_cct_field_name'] = 'my_cct_column_filter_callback';
	return $filters;
} );

function my_cct_column_filter_callback( $value ) {
	// Perform any actions with field value here
	return $value;
}

/**
 * Image callback example
 * cct_slug - change this with your actual CCT slug
 * _cct_field_name - change this with your actual field name
 */
add_filter( 'jet-engine/custom-content-types/rest-api/filters/cct_slug', function( $filters ) {
	$filters['_cct_field_name'] = 'my_cct_column_filter_image_callback';
	return $filters;
} );

function my_cct_column_filter_image_callback( $value ) {
	$value = wp_get_attachment_image_url( $value, 'full' );
	return $value;
}