You can use following code. Add this to theme’s functions.php file.
function wpg_add_columns($cols) {
$cols['wc_settings_tab_order_date'] = __('Order Date', 'mytheme');
return $cols;
}
add_filter('wpg_order_columns', 'wpg_add_columns');
function wpg_add_fields($settings) {
$settings['payment_method'] = array(
'name' => __( 'Order date', 'woocommerce-simply-order-export' ),
'type' => 'checkbox',
'desc' => __( 'Order date', 'woocommerce-simply-order-export' ),
'id' => 'wc_settings_tab_order_date'
);
return $settings;
}
add_filter('wc_settings_tab_order_export', 'wpg_add_fields');
function csv_write( &$csv, $od, $field ) {
switch( $field ) {
case 'wc_settings_tab_order_date':
array_push( $csv, $od->order_date );
break;
default :
break;
}
}
add_action('wpg_add_values_to_csv', 'csv_write', 10, 3);
This is working snippet.