php 通过 WooCommerce 3 中的挂钩更改产品价格

Change product prices via a hook in WooCommerce 3

提问by KronosL

IN WooCommerce, I need to multiply all product prices by a number. So I have used the following (via a plugin):

在 WooCommerce 中，我需要将所有产品价格乘以一个数字。所以我使用了以下（通过插件）：

add_filter('woocommerce_get_regular_price', array( $this, 'my_custom_price'), 99);
add_filter('woocommerce_get_price', array( $this, 'my_custom_price'), 99);

function my_custom_price( $original_price ) {
  global $post, $woocommerce;

  //Logic for calculating the new price here
  $new_price = $original_price * 2;

  //Return the new price (this is the price that will be used everywhere in the store)
  return $new_price;
 }

But, that doesn't work for variation products.I have tried the following hooks with no luck:

但是，这不适用于变体产品。我尝试了以下钩子但没有运气：

add_filter('woocommerce_get_variation_regular_price', array( $this, 'my_custom_price'), 99);
add_filter('woocommerce_get_variation_price', array( $this, 'my_custom_price'), 99);

The only one that works half way is this one:

唯一能做一半的就是这个：

add_filter('woocommerce_variation_prices_price', array( $this, 'my_custom_price'), 99);

But that just changed the overall price, not the selected variation price. See the image below, price is BsF. 200 and the overall price is right, 200 x 2 = 400, but the variation price when selected still shows 200:

但这只是改变了整体价格，而不是选择的变化价格。见下图，价格为 BsF。200，整体价格是对的，200 x 2 = 400，但是选择时的变化价格仍然显示200：

Note: I need it to actually change, so display html hooks wont work.

注意：我需要实际更改它，因此显示 html 钩子不起作用。

Is there anything I'm missing, or something wrong?

有什么我遗漏的，或者有什么问题吗？

回答by LoicTheAztec

Update 4(September 2019)

• 2 code versions for themes and plugins (works in Woocommerce 3.3.x too)
  
• Cached variations prices in Woocommerce 3 (Update and addition):
  Now using woocommerce_get_variation_prices_hashfilter hook much more efficient, instead of wc_delete_product_transients()… See this related thread
• Added product price filter widget hooks (see at the end).

更新 4 （2019 年 9 月）

• 主题和插件的 2 个代码版本（也适用于 Woocommerce 3.3.x）
  
• Woocommerce 3 中的缓存变体价格（更新和添加）：
  现在使用woocommerce_get_variation_prices_hash过滤器钩子效率更高，而不是wc_delete_product_transients()......请参阅此相关线程
• 添加了产品价格过滤器小部件挂钩（见文末）。

1) Plugin versionwith a constructor function:

1)带构造函数的插件版本：

The hooks that you are using are deprecated in WooCommerce 3+

您使用的钩子在 WooCommerce 3+ 中已弃用

To make it work for all products prices, including variations prices, you should use this:

要使其适用于所有产品价格，包括变体价格，您应该使用：

## The following goes inside the constructor ##

// Simple, grouped and external products
add_filter('woocommerce_product_get_price', array( $this, 'custom_price' ), 99, 2 );
add_filter('woocommerce_product_get_regular_price', array( $this, 'custom_price' ), 99, 2 );
// Variations 
add_filter('woocommerce_product_variation_get_regular_price', array( $this, 'custom_price' ), 99, 2 );
add_filter('woocommerce_product_variation_get_price', array( $this, 'custom_price' ), 99, 2 );

// Variable (price range)
add_filter('woocommerce_variation_prices_price', array( $this, 'custom_variable_price' ), 99, 3 );
add_filter('woocommerce_variation_prices_regular_price', array( $this, 'custom_variable_price' ), 99, 3 );

// Handling price caching (see explanations at the end)
add_filter( 'woocommerce_get_variation_prices_hash', array( $this, 'add_price_multiplier_to_variation_prices_hash' ), 99, 1 );


## This goes outside the constructor ##

// Utility function to change the prices with a multiplier (number)
public function get_price_multiplier() {
    return 2; // x2 for testing
}

public function custom_price( $price, $product ) {
    return (float) $price * get_price_multiplier();
}

public function custom_variable_price( $price, $variation, $product ) {
    return (float) $price * get_price_multiplier();
}

public function add_price_multiplier_to_variation_prices_hash( $hash ) {
    $hash[] = get_price_multiplier();
    return $hash;
}

The code tested and perfectly works (only) in WooCommerce 3+.

代码经过测试并在 WooCommerce 3+ 中完美运行（仅）。

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2) For theme version:functions.phpfile on active child theme (or active theme):

2）对于主题版本：functions.php活动子主题（或活动主题）上的文件：

// Utility function to change the prices with a multiplier (number)
function get_price_multiplier() {
    return 2; // x2 for testing
}

// Simple, grouped and external products
add_filter('woocommerce_product_get_price', 'custom_price', 99, 2 );
add_filter('woocommerce_product_get_regular_price', 'custom_price', 99, 2 );
// Variations
add_filter('woocommerce_product_variation_get_regular_price', 'custom_price', 99, 2 );
add_filter('woocommerce_product_variation_get_price', 'custom_price', 99, 2 );
function custom_price( $price, $product ) {
    return (float) $price * get_price_multiplier();
}

// Variable (price range)
add_filter('woocommerce_variation_prices_price', 'custom_variable_price', 99, 3 );
add_filter('woocommerce_variation_prices_regular_price', 'custom_variable_price', 99, 3 );
function custom_variable_price( $price, $variation, $product ) {
    // Delete product cached price  (if needed)
    // wc_delete_product_transients($variation->get_id());

    return (float) $price * get_price_multiplier();
}

// Handling price caching (see explanations at the end)
add_filter( 'woocommerce_get_variation_prices_hash', 'add_price_multiplier_to_variation_prices_hash', 99, 1 );
function add_price_multiplier_to_variation_prices_hash( $hash ) {
    $hash[] = get_price_multiplier();
    return $hash;
}

Tested and works on woocommerce 3+

在 woocommerce 3+ 上测试和工作

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For products in sale you have those hooks:

对于销售中的产品，您有这些挂钩：

• woocommerce_product_get_sale_price(Simple, grouped and external products)
• woocommerce_variation_prices_sale_price(Variable products (min-max))
• woocommerce_product_variation_get_sale_price(Products variations)

• woocommerce_product_get_sale_price（简单、分组和外部产品）
• woocommerce_variation_prices_sale_price（可变产品（最小-最大））
• woocommerce_product_variation_get_sale_price（产品变化）

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Cached prices and woocommerce 3:

缓存价格和 woocommerce 3：

The 3 filters hooks involved in variations cached prices are:

变化缓存价格中涉及的 3 个过滤器钩子是：

• woocommerce_variation_prices_price
• woocommerce_variation_prices_regular_price
• woocommerce_variation_prices_sale_price

• woocommerce_variation_prices_price
• woocommerce_variation_prices_regular_price
• woocommerce_variation_prices_sale_price

Introduced in Woocommerce 3, woocommerce_get_variation_prices_hashfilter hook will allow to refresh variations cached prices in a much more efficient way, without deleting related transients anytime that this hooks are executed.

Woocommerce 3 中引入的woocommerce_get_variation_prices_hash过滤器钩子将允许以更有效的方式刷新缓存价格的变化，而无需在执行此钩子的任何时候删除相关的瞬态。

So performances will stay boosted (Thanks to Matthew Clarkthat pointed this better way)

所以性能将保持提升（感谢马修克拉克指出了这个更好的方式）

See: Caching and dynamic pricing – upcoming changes to the get_variation_prices method

请参阅：缓存和动态定价 - get_variation_prices 方法即将发生的变化

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For filtering product prices with a widget(min and max price), use the following hooks:

要使用小部件（最低和最高价格）过滤产品价格，请使用以下挂钩：

• woocommerce_price_filter_widget_min_amountthat has one argument$price
• woocommerce_price_filter_widget_max_amountthat has one argument$price

• woocommerce_price_filter_widget_min_amount有一个论点$price
• woocommerce_price_filter_widget_max_amount有一个论点$price