WooCommerce: Disabling checkout fields with a filter hook

Question

I have try to disable the "required" property of several checkout fields at the same time using woocommerce_checkout_fields filter hook, with no success.

Plugins are not working properly either. This is my code:

// Hook in
add_filter( 'woocommerce_checkout_fields' , 'custom_override_checkout_fields' );

// Our hooked in function - $fields is passed via the filter!
function custom_override_checkout_fields( $fields ) {
$fields['billing']['billing_address_1']['required'] = false;
$fields['billing']['billing_address_2']['required'] = false;

$fields['billing']['billing_postcode']['required'] = false;
$fields['billing']['billing_city']['required'] = false;
$fields['billing']['billing_phone']['required'] = false;

     return $fields;
}

What is wrong?
How can I achieve this?

Answer 1

You need to use the unset() function for this purpose and you can do-it this way:

add_filter( 'woocommerce_checkout_fields' , 'custom_override_checkout_fields' );

function custom_override_checkout_fields( $fields ) {
    unset($fields['billing']['billing_address_1']);
    unset($fields['billing']['billing_address_2']);
    unset($fields['billing']['billing_postcode']);
    unset($fields['billing']['billing_city']);
    unset($fields['billing']['billing_phone']);
    return $fields;
}

You will need to paste this code in function.php file located in your active child theme or theme.

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You have changed your question with an update: Here it is my new answer

Making the address fields optional (regarding your update):

You have to use a different filter hook for that purpose. There are 2 different filter hooks:

1) For Billing Fields:

add_filter( 'woocommerce_billing_fields', 'wc_optional_billing_fields', 10, 1 );
function wc_optional_billing_fields( $address_fields ) {
    $address_fields['billing_address_1']['required'] = false;
    $address_fields['billing_address_2']['required'] = false;
    $address_fields['billing_postcode']['required'] = false;
    $address_fields['billing_city']['required'] = false;
    $address_fields['billing_phone']['required'] = false;
    return $address_fields;
}

2) For shipping fields:

add_filter( 'woocommerce_shipping_fields', 'wc_optional_shipping_fields', 10, 1 );
function wc_optional_shipping_fields( $address_fields ) {
    $address_fields['shipping_phone']['required'] = false;
    return $address_fields;
}

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To make the address fields required:

You can use the same hooks and functions above, changing for each field false to true.

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You will need to paste this code in function.php file located in your active child theme or theme.

Reference: Customizing checkout fields using hooks