WooCommerce - Add checkbox field to the checkout

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<?php

/**
 * Add checkbox field to the checkout
 **/
add_action('woocommerce_after_order_notes', 'my_custom_checkout_field');
 
function my_custom_checkout_field( $checkout ) {
 
    echo '<div id="my-new-field"><h3>'.__('My Checkbox: ').'</h3>';
 
    woocommerce_form_field( 'my_checkbox', array(
        'type'          => 'checkbox',
        'class'         => array('input-checkbox'),
        'label'         => __('I have read and agreed.'),
        'required'  => true,
        ), $checkout->get_value( 'my_checkbox' ));
 
    echo '</div>';
}
 
/**
 * Process the checkout
 **/
add_action('woocommerce_checkout_process', 'my_custom_checkout_field_process');
 
function my_custom_checkout_field_process() {
    global $woocommerce;
 
    // Check if set, if its not set add an error.
    if (!$_POST['my_checkbox'])
         $woocommerce->add_error( __('Please agree to my checkbox.') );
}
 
/**
 * Update the order meta with field value
 **/
add_action('woocommerce_checkout_update_order_meta', 'my_custom_checkout_field_update_order_meta');
 
function my_custom_checkout_field_update_order_meta( $order_id ) {
    if ($_POST['my_checkbox']) update_post_meta( $order_id, 'My Checkbox', esc_attr($_POST['my_checkbox']));
}

?>

how can i add this checkbox after the payment methods ?

Hi there i am getting error on this add_action('woocommerce_checkout_fields', 'my_custom_checkout_field');

function my_custom_checkout_field( $checkout ) {
woocommerce_form_field( 'my_field_name', array( 
        'type'          => 'text', 
        'class'         => array('my-field-class form-row-wide'), 
        'label'         => __('Fill in this field'), 
        'placeholder'   => __('Enter a number'),
        ), $checkout->get_value( 'my_field_name' )); 

Fatal error: Call to a member function get_value() on array in C:\xampp\htdocs\flower\wp-content\themes\Avada-child\functions.php on line 286

What's wrong i am doing ?

Hello, I have tried this code snippit and found that if I leave a required field blank, I get an Internal Server Error. I am wondering what I can do to clear this up? Here is the code in my functions.php:

/** Add checkbox field to the checkout
**/
add_action('woocommerce_after_order_notes', 'my_custom_checkout_field');

function my_custom_checkout_field( $checkout ) {

echo '<div id="my-new-field"><h3>'.__('Mail List: ').'</h3>';

woocommerce_form_field( 'my_checkbox', array(
    'type'          => 'checkbox',
    'class'         => array('input-checkbox'),
    'label'         => __('Please add my email address to your mail list to keep me up to date on future offerings.'),
    'required'  => false,
    ), $checkout->get_value( 'my_checkbox' ));

echo '</div>';

}

/**

• Process the checkout
  **/
  add_action('woocommerce_checkout_process', 'my_custom_checkout_field_process');

function my_custom_checkout_field_process() {
global $woocommerce;

// Check if set, if its not set add an error.
if (!$_POST['my_checkbox'])
     $woocommerce->add_error( __('Would you like to join the mail list?') );

}

/**

• Update the order meta with field value
  **/
  add_action('woocommerce_checkout_update_order_meta', 'my_custom_checkout_field_update_order_meta');

function my_custom_checkout_field_update_order_meta( $order_id ) {
if ($_POST['my_checkbox']) update_post_meta( $order_id, 'My Checkbox', esc_attr($_POST['my_checkbox']));
}

Hi,

I get this Warning above the Place Order button just for a few seconds when the Checkout page is loading and then the warning disappear.

What can I do to fix this issue?

Thank you for your help!

For those of you getting the error with get_value on an array -- use WC_Checkout::get_value instead

Working fine for checkbox, Thanks for the resource.

Hello,

works perfectly, thank you very much!

However, could you help me adapt this code to put the checkout in two more languages? I am using WPML.

Thanks again.