Custom Checkout Field for Woocommerce with dynamic options - wordpress

Question

I want to have dynamic options for my checkout dropdown field. The options must be users of specific roles that are in WordPress users. How can I achieve it? Below is the code that I am working with. In the first function, we can get all administrator users. I want users to be in options of the dropdown in the select field of checkout.
**User Roles**
function get_users_by_role($role, $orderby, $order) {
$args = array(
'role' => 'administrator',
'orderby' => 'user_nicename',
'order' => 'ASC'
);
$users = get_users( $args );
return $users;
}
**Dropdown Field**
function everest_custom_dropdown_fields( $fields ) {
$fields['everestmerchant_extra_dropdown_fields']['dropdown'] = array(
'label' => __('Leader Name', 'woocommerce'),
'placeholder' => _x('Leader Name', 'placeholder', 'woocommerce'),
'required' => true,
'class' => array( 'wps-drop' ),
'clear' => true,
'type' => 'select',
'options' => array(
'option 1' => __('option 1', 'woocommerce' ),
'option 2' => __('option 2', 'woocommerce'
)//end of options
);
return $fields;
}
add_filter( 'woocommerce_checkout_fields', 'everest_custom_dropdown_fields' );

Answer 1

Get All Leaders
function get_leaders($role) {
$args = array(
'role' => $role,
'orderby' => 'user_nicename',
'order' => 'ASC'
);
$leaders = ['' => 'Please Select'];
$users = get_users( $args );
if($users){
foreach($users as $user){
$leaders[$user->data->ID] = $user->data->display_name;
}
}
return $leaders;
}
Add Leader field in checkout page
function leader_name_select_field( $checkout ){
woocommerce_form_field( 'leader_name', array(
'type' => 'select',
'required' => true,
'class' => array('form-row-wide'),
'label' => 'Leader Name',
'options' => get_leaders('administrator')
), $checkout->get_value( 'leader_name' ) );
}
add_action( 'woocommerce_after_checkout_billing_form', 'leader_name_select_field' );
Save Selected field in database.
function save_leader_name_of_order( $order_id ){
if( !empty( $_POST['leader_name'] ) )
update_post_meta( $order_id, 'leader_name', sanitize_text_field( $_POST['leader_name'] ) );
}
add_action( 'woocommerce_checkout_update_order_meta', 'save_leader_name_of_order' );
Show saved field in order page in dashboard
function leader_name_show_on_order_detail_page($order){
$leader_id = get_post_meta($order->get_id(), 'leader_name', true );
$leader = get_user_by( 'ID', $leader_id );
if($leader_id && $leader){
echo '<p class="form-field form-field-wide">';
echo '<label>Leader Name</label>';
echo '<p> ' . $leader->data->display_name . '</p>';
echo '</p>';
}
}
add_action( 'woocommerce_admin_order_data_after_order_details', 'leader_name_show_on_order_detail_page', 10, 1 );