Remove Shipping Method/Rate based on Checkout Fields

woo.php

add_filter( 'woocommerce_package_rates', function ( $rates ) {
	if ( isset( $_POST['post_data'] ) ) {
		parse_str( $_POST['post_data'], $post_data );
		
		if ( isset( $post_data['billing_custom_field'] ) ) {
			switch ( $post_data['billing_custom_field'] ) {
				case 'Jeg_henter_selv':
					unset( $rates['local_pickup:5'] );
					break;
				case 'Levering_til_adresse':
					unset( $rates['local_pickup:10'] );
					break;
			}
		}
	}
	
	return $rates;
}, 99 );

add_action( 'woocommerce_checkout_update_order_review', function () {
	foreach ( WC()->cart->get_shipping_packages() as $package_key => $package ) {
		WC()->session->set( 'shipping_for_package_' . $package_key, true );
	}
	
	WC()->cart->calculate_shipping();
} );

add_action( 'wp_footer', function () {
	if ( is_checkout() ) {
		?>
		<script>
			jQuery( document ).ready( function ( $ ) {
				$( 'input[name="billing_custom_field"]' ).on( 'change', function () {
					$( 'body' ).trigger( 'update_checkout' );
				} );
			} );
		</script>
		<?php
	}
}, 99 );