Adding custom fields for the Quote Form

If you want to add more custom fields for the Quote Form. You can add this code to your functions.php child theme on the backend.

add_action( 'wpc_quote_form_field_before_message', 'wpc_quote_form_field_before_message' );
function wpc_quote_form_field_before_message() {
    ?>
    <div class="wpc-field-group">
        <input type="text" name="wpc-country" value="" placeholder="<?php esc_html_e( 'Country', 'textdomain' ); ?>">
        <span class="error" data-notice-country="true"></span>
    </div>
    <?php
}
add_filter( 'wpc_quote_form_mail_post_values', 'wpc_quote_form_mail_post_values' );
function wpc_quote_form_mail_post_values( $values ) {    
    $values['country'] = isset( $_POST['wpc-country'] ) ? $_POST['wpc-country'] : '';
    return $values;
}
add_action( 'wpc_quote_form_field_validation', 'wpc_quote_form_field_validation', 10, 2 );
function wpc_quote_form_field_validation( $values, $errors ) {
    if ( empty( $values['country'] ) ) {
        $errors->add( 'country', esc_html__( 'Country field is empty.', 'textdomain' ) );
    }
}
add_action( 'wp_footer', 'wpc_wp_footer', 10, 2 );
function wpc_wp_footer() {
    ?>
    <script>
    (function($){
        $(document).ready(function ($) {
            wpc.add_action(
                'wpc_quote_form_field_error_notice',
                function ($form, errorData) {
                    if (errorData.country) {
                        $form
                            .find('[data-notice-country]')
                            .text(errorData.country[0]);
                    }
                }
            );
        });
    })(jQuery);
    </script>
    <?php
}