通过 WooCommerce 3+ 中特定类别的挂钩更改产品价格

Question

这段代码有什么问题？我对这段代码有一些疑问。

function my_woocommerce_get_price($price, $_product) {
         $kurs = 1.67;
         $new_price = $price / $kurs;       
         $product_categories = array('laminat');
         if( has_term( $product_categories, 'product_cat', $product->get_id() ) ) {
                 return $new_price; // новая цена
         } else {
                 return $price; 
         }
}
add_filter('woocommerce_get_price', 'my_woocommerce_get_price', 100, 2);

我在尝试保存代码时遇到此错误。

Uncaught Error: Call to a member function get_id() on null in wp-content/themes/mrDoor/functions.php:128
Stack trace:
#0 wp-includes/class-wp-hook.php(287): my_woocommerce_get_price('919', Object(WC_Product_Simple))
#1 wp-includes/plugin.php(255): WP_Hook->apply_filters('919', Array)
#2 wp-content/plugins/woocommerce/includes/class-wc-deprecated-filter-hooks.php(142): apply_filters_ref_array('woocommerce_get...', Array)
#3 wp-content/plugins/woocommerce/includes/class-wc-deprecated-filter-hooks.php(129): WC_Deprecated_Filter_Hooks->trigger_hook('woocommerce_get...', Array)
#4 wp-content/plugins/woocommerce/includes/abstracts/abstract-wc-deprecated-hooks.php(75): WC_Deprecated_Filter_Hooks->handle_deprecated_hook('woocommerce_pro...', 'woocommerce_get...', Array, '919')
#5 wp-include

Answer 1

您的代码中存在多个错误，自 WooCommerce 3 起，钩子 woocommerce_get_price 已过时、弃用并替换为：

woocommerce_product_get_price 对于 product post 类型
woocommerce_product_variation_get_price 对于 product_variation post 类型

基于，这里是更改特定产品类别的产品价格的方法（需要更多代码）：

// Simple, grouped and external products (and product variations)
add_filter( 'woocommerce_product_get_price', 'custom_product_price', 100, 2 );
add_filter( 'woocommerce_product_get_regular_price', 'custom_product_price', 100, 2 );
add_filter( 'woocommerce_product_variation_get_price', 'custom_product_price', 100, 2 );
add_filter( 'woocommerce_product_variation_get_regular_price', 'custom_product_price', 100, 2 );
function custom_product_price( $price, $product ) {
    $category_terms = array('laminat');

    // Get the parent variable product for product variations
    $product_id     = $product->get_parent_id() ? $product->get_parent_id() : $product->get_id();

    if( has_term( $category_terms, 'product_cat', $product_id ) ) {
        $price *= 1.67; // новая цена
    }
    return $price;
}

// Variable products (price range)
add_filter('woocommerce_variation_prices_price', 'custom_variable_price_range', 100, 3 );
add_filter('woocommerce_variation_prices_regular_price', 'custom_variable_price_range', 100, 3 );
function custom_variable_price_range( $price, $variation, $product ) {
    $category_terms = array('laminat');
    
    if( has_term( $category_terms, 'product_cat', $product->get_id() ) ) {
        $price *= 1.67; // новая цена
    }
    return $price;
}

// Handling price caching, for better performances
add_filter( 'woocommerce_get_variation_prices_hash', 'custom_variable_product_prices_hash', 100, 3 );
function custom_variable_product_prices_hash( $price_hash, $product, $for_display ) {
    $category_terms = array('laminat');
    
    if( has_term( $category_terms, 'product_cat', $product->get_id() ) ) {
        $price_hash[] = '1.67';
    }
    return $price_hash;
}

代码进入活动子主题（或活动主题）的 functions.php 文件。已测试并有效。

通过 WooCommerce 3+ 中特定类别的挂钩更改产品价格

Change product prices via a hook for specific categories in WooCommerce 3+

php

wordpress

product

woocommerce

price