[Forminator Pro] - Copy select field options to other select fields.

forminator-copy-select-options.php

<?php
/**
 * Plugin Name: [Forminator Pro] Copy select field options to other select fields.
 * Description: Allows to copy options of a select field to other select fields across different forms.
 * Author: Prashant @ WPMUDEV
 * Author URI: https://premium.wpmudev.org
 * License: GPLv2 or later
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit; // Exit if accessed directly.
}

add_filter( 'forminator_cform_render_fields', function( $wrappers, $form_id ) {
	// Please add the form IDs and respective select field IDs where you want to copy the options.
	$allowed_forms = array( 45717 => 'select-1', 45718 => 'select-1' );
	$parent_form   = 2960; // Please change this to the parent form ID.
	$parent_field  = 'select-1'; // Please change this to the parent field ID.
	if ( ! in_array( intval( $form_id ), array_keys( $allowed_forms ), true ) ) {
		return $wrappers;
	}

	foreach ( $wrappers as $wrapper_key => $wrapper ) {
		if ( ! isset( $wrapper['fields'] ) ) {
			continue;
		}

		foreach ( $wrapper['fields'] as $field_key => $fields ) {
			if ( $allowed_forms[ $form_id ] === $fields['element_id'] ) {
				$opt_data     = array();
				$parent_field = Forminator_API::get_form_field( $parent_form, $parent_field, true );
				$child_field  = Forminator_API::get_form_field( $form_id, $fields['element_id'], true );
				if ( $parent_field ) {
					$wrappers[ $wrapper_key ]['fields'][ $field_key ]['options'] = $parent_field['options'];
					$opt_data['options'] = $parent_field['options'];
				}

				if ( $child_field ) {
					Forminator_API::update_form_field( $form_id, $fields['element_id'], $opt_data );
				}
			}
		}
	}
	return $wrappers;
}, 10, 2 );