WooCommerce default address fields customization

I customized Woocomerce’s default address fields. I selected the Address1 and City fields.

Fields save data seamlessly. When the first page is loaded in the My Account>Address>Address edit, these fields appear empty. Same thing at checkout. Normally, when these fields are input, if the user has registered data, these fields are filled. But I tried many things in the select, but it didn’t work.

//  Checkout field update güncelle
function custom_override_checkout_fields_plugin( $fields ) {
    global $tr_cities;

    $fields['shipping']['shipping_state']['type'] = 'select';
    $fields['shipping']['shipping_state']['options'] = array_merge( array( '' => 'Bir se?enek belirleyin...' ), $tr_cities );
    $fields['shipping']['shipping_state']['class'] = array('form-row-wide', 'address-field', 'update_totals_on_change', 'validate-required', 'state_select');

    $fields['shipping']['shipping_city']['type'] = 'select';
    $fields['shipping']['shipping_city']['options'] = array('' => '?nce il se?in...');
    $fields['shipping']['shipping_city']['class'] = array('form-row-wide', 'address-field', 'update_totals_on_change', 'validate-required', 'city_select');

    $fields['shipping']['shipping_address_1']['type'] = 'select';
    $fields['shipping']['shipping_address_1']['options'] = array('' => '?nce il?e se?in...');
    $fields['shipping']['shipping_address_1']['class'] = array('form-row-wide', 'address-field', 'update_totals_on_change', 'validate-required', 'address_select');

    return $fields;
}
add_filter( 'woocommerce_checkout_fields', 'custom_override_checkout_fields_plugin' );

// My Account field update
function custom_override_my_account_fields_plugin( $address ) {
    global $tr_cities;

    $address['state']['type'] = 'select';
    $address['state']['options'] = array_merge( array( '' => 'Bir se?enek belirleyin...' ), $tr_cities );
    $address['state']['class'] = array('form-row-wide', 'address-field', 'update_totals_on_change', 'validate-required', 'state_select');

    $address['city']['type'] = 'select';
    $address['city']['options'] = array('' => '?nce il se?in...');
    $address['city']['class'] = array('form-row-wide', 'address-field', 'update_totals_on_change', 'validate-required', 'city_select');

    $address['address_1']['type'] = 'select';
    $address['address_1']['options'] = array('' => '?nce il?e se?in...');
    $address['address_1']['class'] = array('form-row-wide', 'address-field', 'update_totals_on_change', 'validate-required', 'address_select');

    return $address;
}
add_filter( 'woocommerce_default_address_fields', 'custom_override_my_account_fields_plugin' );

//load city
function load_districts() {
    check_ajax_referer('checkout_nonce', 'nonce');

    global $tr_districts;

    $city_code = sanitize_text_field($_POST['city_code']);
    if (isset($tr_districts[$city_code])) {
        wp_send_json_success($tr_districts[$city_code]);
    } else {
        wp_send_json_error('Ge?ersiz il kodu');
    }
}
add_action('wp_ajax_load_districts', 'load_districts');
add_action('wp_ajax_nopriv_load_districts', 'load_districts');

//js code
jQuery(document).ready(function($) {
    function loadDistricts(cityCode) {
        if (!cityCode) return;

        $.ajax({
            type: 'POST',
            url: checkout_params.ajax_url,
            data: {
                action: 'load_districts',
                city_code: cityCode,
                nonce: checkout_params.nonce
            },
            success: function(response) {
                if (response.success) {
                    var options = '<option value="">Bir il?e se?in...</option>';
                    $.each(response.data, function(index, district) {
                        options += '<option value="' + district + '">' + district + '</option>';
                    });
                    $('#shipping_city').html(options).trigger('change');
                } else {
                    alert(response.data);
                }
            }
        });
    }

When we use the address 1 and city fields as selections, the registered data will be selected when the pages are first loaded.