Custom settings sections don't works

[luizbills]

Describe the bug

The section is registered but the fields do not show.

To Reproduce

<?php

add_filter( 'woocommerce_get_sections_shipping', 'prefix_add_section' );
function prefix_add_section ( $sections ) {
	$sections['my-custom-section'] = 'My Custom Section';
	return $sections; // WORKS
}

add_filter( 'woocommerce_get_settings_shipping', 'prefix_add_settings', 10, 2 );
function prefix_add_settings ( $settings, $current ) {
	if ( 'my-custom-section' === $current ) {
		$prefix = 'my_custom_section_';
		$settings = [
			[
				'id' => $prefix . 'settings',
				'type' => 'title',
				'name' => 'My Custom Title'
			],
			[
				'id' => $prefix . 'input',
				'type' => 'text',
				'name' => 'My Custom Option'
			],
			[
				'id' => $prefix . 'settings',
				'type' => 'sectionend',
			],
		];
	}
	return $settings;
}

Screenshots

Expected behavior

The fields should appear.

Isolating the problem (mark completed items with an [x]):

• I have deactivated other plugins and confirmed this bug occurs when only Classic Commerce plugin is active.
• This bug happens with a default ClassicPress theme active.
• I can reproduce this bug consistently using the steps above.

ClassicPress Environment

### CMS Environment ###

Home URL: https://classic.ddev.site
Site URL: https://classic.ddev.site
CC Version: 1.0.3
WC Version: 3.5.3
Log Directory Writable: ✔
CMS Version: ✔ You are running ClassicPress Version 1.4.2
Multisite: –
Memory Limit: 1 GB
Debug Mode: ✔
Cron: ✔
Language: pt_BR
External object cache: –

### Server Environment ###

Server Info: nginx/1.22.0
PHP Version: 7.4.30
PHP Post Max Size: 100 MB
PHP Time Limit: 600
PHP Max Input Vars: 3000
cURL Version: 7.74.0
OpenSSL/1.1.1n

SUHOSIN Installed: –
MySQL Version: 5.5.5-10.3.35-MariaDB-1:10.3.35+maria~focal-log
Max Upload Size: 100 MB
Default Timezone is UTC: ✔
fsockopen/cURL: ✔
SoapClient: ✔
DOMDocument: ✔
GZip: ✔
Multibyte String: ✔
Remote Post: ✔
Remote Get: ✔

### Database ###

CC Database Version: 3.5.3
WC Database Prefix: wp_
MaxMind GeoIP Database: ❌ The MaxMind GeoIP Database does not exist - Geolocation will not function. You can download and install it manually from https://dev.maxmind.com/geoip/geoip2/geolite2/ to the path: . Scroll down to "Downloads" and download the "MaxMind DB binary
gzipped" file next to "GeoLite2 Country". Please remember to uncompress GeoLite2-Country_xxxxxxxx.tar.gz and upload the GeoLite2-Country.mmdb file only.

Total Database Size: 1.67MB
Database Data Size: 0.79MB
Database Index Size: 0.88MB
wp_woocommerce_sessions: Data: 0.02MB + Index: 0.02MB
wp_woocommerce_api_keys: Data: 0.02MB + Index: 0.03MB
wp_woocommerce_attribute_taxonomies: Data: 0.02MB + Index: 0.02MB
wp_woocommerce_downloadable_product_permissions: Data: 0.02MB + Index: 0.05MB
wp_woocommerce_order_items: Data: 0.02MB + Index: 0.02MB
wp_woocommerce_order_itemmeta: Data: 0.02MB + Index: 0.03MB
wp_woocommerce_tax_rates: Data: 0.02MB + Index: 0.06MB
wp_woocommerce_tax_rate_locations: Data: 0.02MB + Index: 0.03MB
wp_woocommerce_shipping_zones: Data: 0.02MB + Index: 0.00MB
wp_woocommerce_shipping_zone_locations: Data: 0.02MB + Index: 0.03MB
wp_woocommerce_shipping_zone_methods: Data: 0.02MB + Index: 0.00MB
wp_woocommerce_payment_tokens: Data: 0.02MB + Index: 0.02MB
wp_woocommerce_payment_tokenmeta: Data: 0.02MB + Index: 0.03MB
wp_woocommerce_log: Data: 0.02MB + Index: 0.02MB
wp_commentmeta: Data: 0.02MB + Index: 0.03MB
wp_comments: Data: 0.02MB + Index: 0.09MB
wp_links: Data: 0.02MB + Index: 0.02MB
wp_options: Data: 0.23MB + Index: 0.02MB
wp_postmeta: Data: 0.02MB + Index: 0.03MB
wp_posts: Data: 0.02MB + Index: 0.06MB
wp_snippets: Data: 0.02MB + Index: 0.03MB
wp_termmeta: Data: 0.02MB + Index: 0.03MB
wp_terms: Data: 0.02MB + Index: 0.03MB
wp_term_relationships: Data: 0.02MB + Index: 0.02MB
wp_term_taxonomy: Data: 0.02MB + Index: 0.03MB
wp_usermeta: Data: 0.02MB + Index: 0.03MB
wp_users: Data: 0.02MB + Index: 0.05MB
wp_wc_download_log: Data: 0.02MB + Index: 0.03MB
wp_wc_webhooks: Data: 0.02MB + Index: 0.02MB

### Post Type Counts ###

page: 6
post: 2
product: 1

### Security ###

Secure connection (HTTPS): ✔
Hide errors from visitors: ❌Error messages should not be shown to visitors.

### Active Plugins (2) ###

Classic Commerce: by ClassicPress Research Team – 1.0.4
Code Snippets: by Code Snippets Pro – 3.2.0

### Settings ###

API Enabled: –
Force SSL: –
Currency: BRL (R$)
Currency Position: left
Thousand Separator: .
Decimal Separator: ,
Number of Decimals: 2
Taxonomies: Product Types: external (external)
grouped (grouped)
simple (simple)
variable (variable)

Taxonomies: Product Visibility: exclude-from-catalog (exclude-from-catalog)
exclude-from-search (exclude-from-search)
featured (featured)
outofstock (outofstock)
rated-1 (rated-1)
rated-2 (rated-2)
rated-3 (rated-3)
rated-4 (rated-4)
rated-5 (rated-5)


### WC Pages ###

Shop base: #7 - /shop/
Cart: #8 - /cart/
Checkout: #9 - /checkout/
My account: #10 - /my-account/
Terms and conditions: ❌ Page not set

### Theme ###

Name: ClassicPress TwentySeventeen
Version: 1.0.0
Author URL: https://www.classicpress.net
Child Theme: ✔
Parent Theme Name: Twenty Seventeen
Parent Theme Version: 99.1-upstream1.7
Parent Theme Author URL: https://wordpress.org/
Classic Commerce Support: ✔

### Templates ###

Overrides: –

[bahiirwa]

I did a test the issue with Full code

It works fine. Issue could be something with your code.

Code sample

if ( ! defined( 'WPINC' ) ) {
 
    die;
 
}
 
/*
 * Check if WooCommerce is active
 */
if ( in_array( 'woocommerce/woocommerce.php', apply_filters( 'active_plugins', get_option( 'active_plugins' ) ) ) ) {
 
    function tutsplus_shipping_method() {
        if ( ! class_exists( 'TutsPlus_Shipping_Method' ) ) {
            class TutsPlus_Shipping_Method extends WC_Shipping_Method {
                /**
                 * Constructor for your shipping class
                 *
                 * @access public
                 * @return void
                 */
                public function __construct() {
                    $this->id                 = 'tutsplus'; 
                    $this->method_title       = __( 'TutsPlus Shipping', 'tutsplus' );  
                    $this->method_description = __( 'Custom Shipping Method for TutsPlus', 'tutsplus' ); 
 
                    // Availability & Countries
                    $this->availability = 'including';
                    $this->countries = array(
                        'US', // Unites States of America
                        'CA', // Canada
                        'DE', // Germany
                        'GB', // United Kingdom
                        'IT',   // Italy
                        'ES', // Spain
                        'HR'  // Croatia
                        );
 
                    $this->init();
 
                    $this->enabled = isset( $this->settings['enabled'] ) ? $this->settings['enabled'] : 'yes';
                    $this->title = isset( $this->settings['title'] ) ? $this->settings['title'] : __( 'TutsPlus Shipping', 'tutsplus' );
                }
 
                /**
                 * Init your settings
                 *
                 * @access public
                 * @return void
                 */
                function init() {
                    // Load the settings API
                    $this->init_form_fields(); 
                    $this->init_settings(); 
 
                    // Save settings in admin if you have any defined
                    add_action( 'woocommerce_update_options_shipping_' . $this->id, array( $this, 'process_admin_options' ) );
                }
 
                /**
                 * Define settings field for this shipping
                 * @return void 
                 */
                function init_form_fields() { 
 
                    $this->form_fields = array(
 
                     'enabled' => array(
                          'title' => __( 'Enable', 'tutsplus' ),
                          'type' => 'checkbox',
                          'description' => __( 'Enable this shipping.', 'tutsplus' ),
                          'default' => 'yes'
                          ),
 
                     'title' => array(
                        'title' => __( 'Title', 'tutsplus' ),
                          'type' => 'text',
                          'description' => __( 'Title to be display on site', 'tutsplus' ),
                          'default' => __( 'TutsPlus Shipping', 'tutsplus' )
                          ),
 
                     'weight' => array(
                        'title' => __( 'Weight (kg)', 'tutsplus' ),
                          'type' => 'number',
                          'description' => __( 'Maximum allowed weight', 'tutsplus' ),
                          'default' => 100
                          ),
 
                     );
 
                }
 
                /**
                 * This function is used to calculate the shipping cost. Within this function we can check for weights, dimensions and other parameters.
                 *
                 * @access public
                 * @param mixed $package
                 * @return void
                 */
                public function calculate_shipping( $package ) {
                    
                    $weight = 0;
                    $cost = 0;
                    $country = $package["destination"]["country"];
 
                    foreach ( $package['contents'] as $item_id => $values ) 
                    { 
                        $_product = $values['data']; 
                        $weight = $weight + $_product->get_weight() * $values['quantity']; 
                    }
 
                    $weight = wc_get_weight( $weight, 'kg' );
 
                    if( $weight <= 10 ) {
 
                        $cost = 0;
 
                    } elseif( $weight <= 30 ) {
 
                        $cost = 5;
 
                    } elseif( $weight <= 50 ) {
 
                        $cost = 10;
 
                    } else {
 
                        $cost = 20;
 
                    }
 
                    $countryZones = array(
                        'HR' => 0,
                        'US' => 3,
                        'GB' => 2,
                        'CA' => 3,
                        'ES' => 2,
                        'DE' => 1,
                        'IT' => 1
                        );
 
                    $zonePrices = array(
                        0 => 10,
                        1 => 30,
                        2 => 50,
                        3 => 70
                        );
 
                    $zoneFromCountry = $countryZones[ $country ];
                    $priceFromZone = $zonePrices[ $zoneFromCountry ];
 
                    $cost += $priceFromZone;
 
                    $rate = array(
                        'id' => $this->id,
                        'label' => $this->title,
                        'cost' => $cost
                    );
 
                    $this->add_rate( $rate );
                    
                }
            }
        }
    }
 
    add_action( 'woocommerce_shipping_init', 'tutsplus_shipping_method' );
 
    function add_tutsplus_shipping_method( $methods ) {
        $methods[] = 'TutsPlus_Shipping_Method';
        return $methods;
    }
 
    add_filter( 'woocommerce_shipping_methods', 'add_tutsplus_shipping_method' );
 
    function tutsplus_validate_order( $posted )   {
 
        $packages = WC()->shipping->get_packages();
 
        $chosen_methods = WC()->session->get( 'chosen_shipping_methods' );
         
        if( is_array( $chosen_methods ) && in_array( 'tutsplus', $chosen_methods ) ) {
             
            foreach ( $packages as $i => $package ) {
 
                if ( $chosen_methods[ $i ] != "tutsplus" ) {
                             
                    continue;
                             
                }
 
                $TutsPlus_Shipping_Method = new TutsPlus_Shipping_Method();
                $weightLimit = (int) $TutsPlus_Shipping_Method->settings['weight'];
                $weight = 0;
 
                foreach ( $package['contents'] as $item_id => $values ) 
                { 
                    $_product = $values['data']; 
                    $weight = $weight + $_product->get_weight() * $values['quantity']; 
                }
 
                $weight = wc_get_weight( $weight, 'kg' );
                
                if( $weight > $weightLimit ) {
 
                        $message = sprintf( __( 'Sorry, %d kg exceeds the maximum weight of %d kg for %s', 'tutsplus' ), $weight, $weightLimit, $TutsPlus_Shipping_Method->title );
                             
                        $messageType = "error";
 
                        if( ! wc_has_notice( $message, $messageType ) ) {
                         
                            wc_add_notice( $message, $messageType );
                      
                        }
                }
            }       
        } 
    }
 
    add_action( 'woocommerce_review_order_before_cart_contents', 'tutsplus_validate_order' , 10 );
    add_action( 'woocommerce_after_checkout_validation', 'tutsplus_validate_order' , 10 );
}

Post code screenshot.

[luizbills]

I did a test the issue with Full code

This code create a shipping method. I just want to create a settings section.

It works fine. Issue could be something with your code.

My code works perfectly fine in woocommerce. Source: https://woocommerce.com/document/adding-a-section-to-a-settings-tab/

[bahiirwa]

Apologies @luizbills, I hadn't looked for the hooks in the codebase. Classic-commerce is based off Woo 3.5.3 and this feature you are using was introduced in Woo 3.6.0 so it hasn't been backported.
Ref: woocommerce/woocommerce#21719

This is a legitimate request.