Change City Field To Select

/**

 * This code snipet shows how to change the City field in the

 * donation form to a selectable, dropdown field, with several

 * pre-set options.

 *

 * This shows in general how you can modify a donation field

 * using the Donation Fields API. The basic process involves

 * getting the field (shown below), then using the set() method

 * to change specific settings.

 */

add_action( 'init', function() {

	$cities = array(

		'New York',

		'Chicago',

		'San Francisco',

	);

	// Get the field.

	$field = charitable()->donation_fields()->get_field( 'city' );

	// In the admin donation form, change the type to select and

	// add our list of cities as options.

	$field->set( 'admin_form', 'type', 'select' );

	$field->set( 'admin_form', 'options', $cities );

	// Do the same in the front-end donation form.

	$field->set( 'donation_form', 'type', 'select' );

	$field->set( 'donation_form', 'options', $cities );

}, 100 );