Question

我需要先检查客户是否在WooCommerce中购买了特定产品。

案件如下：客户不能购买产品“c”，“d”，“e”，除非他们在较早时间购买了产品“a”或“b”。

如果客户较早购买了产品“a”或“b”，则激活产品“c”，“d”和“e”的购买按钮，并允许他们购买。

如果他们之前没有购买“a”或“b”，则不允许他们购买“c”，“d”，“e”，并且停用购买按钮。

我怎样才能做到这一点？

感谢。

Answer 1

已更新 （Woocommerce 3 +的兼容性）

是的，可以写一个返回＆＃34; true＆＃34;的条件函数。如果当前客户已经购买了特定的产品ID。 此代码位于您的活动子主题或主题的function.php文件中。

这是条件函数：

function has_bought_items() {
    $bought = false;

    // Set HERE ine the array your specific target product IDs
    $prod_arr = array( '21', '67' );

    // Get all customer orders
    $customer_orders = get_posts( array(
        'numberposts' => -1,
        'meta_key'    => '_customer_user',
        'meta_value'  => get_current_user_id(),
        'post_type'   => 'shop_order', // WC orders post type
        'post_status' => 'wc-completed' // Only orders with status "completed"
    ) );
    foreach ( $customer_orders as $customer_order ) {
        // Updated compatibility with WooCommerce 3+
        $order_id = method_exists( $order, 'get_id' ) ? $order->get_id() : $order->id;
        $order = wc_get_order( $customer_order );

        // Iterating through each current customer products bought in the order
        foreach ($order->get_items() as $item) {
            // WC 3+ compatibility
            if ( version_compare( WC_VERSION, '3.0', '<' ) ) 
                $product_id = $item['product_id'];
            else
                $product_id = $item->get_product_id();

            // Your condition related to your 2 specific products Ids
            if ( in_array( $product_id, $prod_arr ) ) 
                $bought = true;
        }
    }
    // return "true" if one the specifics products have been bought before by customer
    return $bought;
}

此代码经过测试且有效。

<强> USAGE：
例如，您可以在之前已复制到活动子主题或主题的 WooCommerce templates 中使用它：

add-to-cart 按钮的购物页面模板为loop/add-to-cart.php。
add-to-cart 按钮的产品页面模板位于single-product/add-to-cart folder，具体取决于您的产品类型。

以下是您可以在（上图）：

这些模板中使用的示例

// Replace the numbers by your special restricted products IDs
$restricted_products = array( '20', '32', '75' );

// compatibility with WC +3
$product_id = method_exists( $product, 'get_id' ) ? $product->get_id() : $product->id;

// customer has NOT already bought a specific product for this restricted products
if ( !has_bought_items() && in_array( $product_id, $restricted_products ) ) { 

    // Displaying an INACTIVE add-to-cart button (With a custom text, style and without the link).
    // (AND optionally) an explicit message for example.

// ALL OTHER PRODUCTS OR RESTRICTED PRODUCTS IF COSTUMER HAS ALREADY BOUGHT SPECIAL PRODUCTS
} else { 

    // place for normal Add-To-Cart button code here
}

此处完整应用示例到商店页面上的 add-to-cart 按钮模板：

<?php
/**
 * Loop Add to Cart
 *
 * This template can be overridden by copying it to yourtheme/woocommerce/loop/add-to-cart.php.
 *
 * HOWEVER, on occasion WooCommerce will need to update template files and you
 * (the theme developer) will need to copy the new files to your theme to
 * maintain compatibility. We try to do this as little as possible, but it does
 * happen. When this occurs the version of the template file will be bumped and
 * the readme will list any important changes.
 *
 * @see         https://docs.woocommerce.com/document/template-structure/
 * @author      WooThemes
 * @package     WooCommerce/Templates
 * @version     2.5.0
 */

if ( ! defined( 'ABSPATH' ) ) {
    exit;
}

global $product;

// Replace the numbers by your special restricted products IDs
$restricted_products = array( '37', '53', '70' );

// compatibility with WC +3
$product_id = method_exists( $product, 'get_id' ) ? $product->get_id() : $product->id;

if ( !has_bought_items() && in_array( $product_id, $restricted_products ) ) {

    echo '<a class="button greyed_button">' . __("Disabled", "your_theme_slug") . '</a>';
    echo '<br><span class="greyed_button-message">' . __("Your message goes here…", "your_theme_slug") . '</span>';

} else {

echo apply_filters( 'woocommerce_loop_add_to_cart_link',
    sprintf( '<a rel="nofollow" href="%s" data-quantity="%s" data-product_id="%s" data-product_sku="%s" class="%s">%s</a>',
        esc_url( $product->add_to_cart_url() ),
        esc_attr( isset( $quantity ) ? $quantity : 1 ),
        esc_attr( $product_id ),
        esc_attr( $product->get_sku() ),
        esc_attr( isset( $class ) ? $class : 'button' ),
        esc_html( $product->add_to_cart_text() )
    ),
$product );

}

您将使用活动子主题或主题的 greyed_button 文件中的 style.css 类设置非活动按钮的样式。使用 greyed_button-message 类的消息也是如此。

Answer 2

在这种情况下，也可以使用内置的woocommerce功能wc_customer_bought_product。

请参阅函数用法here。

Answer 3

新版紧凑，更轻，更快，兼容所有版本的woocommerce （版本2.4及以上版本）

这是新增强且更轻的条件函数，部分基于内置的woocommerce函数wc_customer_bought_product源代码。

有2个可选参数$user_id和$product_ids：

$user_id将允许您指定已定义的用户ID （当不用于当前登录用户时）;
$product_ids （数组）将允许指定要检查的已定义产品ID

以下是代码：

function has_bought_items( $user_id = 0,  $product_ids = 0 ) {
    global $wpdb;
    $customer_id = $user_id == 0 || $user_id == '' ? get_current_user_id() : $user_id;
    $statuses      = array_map( 'esc_sql', wc_get_is_paid_statuses() );

    if ( is_array( $product_ids ) )
        $product_ids = implode(',', $product_ids);

    if ( $product_ids !=  ( 0 || '' ) )
        $query_line = "AND woim.meta_value IN ($product_ids)";
    else
        $query_line = "AND woim.meta_value != 0";

    // Count the number of products
    $product_count_query = $wpdb->get_var( "
        SELECT COUNT(p.ID) FROM {$wpdb->prefix}posts AS p
        INNER JOIN {$wpdb->prefix}postmeta AS pm ON p.ID = pm.post_id
        INNER JOIN {$wpdb->prefix}woocommerce_order_items AS woi ON p.ID = woi.order_id
        INNER JOIN {$wpdb->prefix}woocommerce_order_itemmeta AS woim ON woi.order_item_id = woim.order_item_id
        WHERE p.post_status IN ( 'wc-" . implode( "','wc-", $statuses ) . "' )
        AND pm.meta_key = '_customer_user'
        AND pm.meta_value = $customer_id
        AND woim.meta_key IN ( '_product_id', '_variation_id' )
        $query_line
    " );

    // Return a boolean value if count is higher than 0
    return $product_count_query > 0 ? true : false;
}

代码放在活动子主题（或主题）的function.php文件中，或者放在任何插件文件中。

此代码在Woocommerce 3+上进行测试并且有效（它也适用于以前的版本）。

用法示例：

示例1 （已登录客户）：检测当前用户是否已购买其中一个已定义的产品（产品ID需要为阵列）

// Define the targeted Products IDs
$product_ids = array( 38, 41, 85, 95 );

if( has_bought_items( '', $product_ids ) )
    echo "<p>You have already purchased one of this products</p>";
else
    echo "<p>You have not yet purchased one of this products</p>";

示例2 （设置$user_id）检测定义的用户是否购买了其中一个已定义的产品（产品ID需要是阵列）

// Define the user ID
$user_id = 85;

// Define the targeted Products IDs
$product_ids = array( 38, 41, 85, 95 );

if( has_bought_items( $user_id, $product_ids ) )
    echo "<p>This user have already purchased one of this products</p>";
else
    echo "<p>This user have not yet purchased one of this products</p>";

如果未定义$user_id并且当前用户未登录，则此函数将返回false。

示例3 （已登录客户）：检测当前用户是否已进行购买

if( has_bought_items() )
    echo '<p>You have already made a purchase</p>';
else
    echo '<p>Welcome, for your first purchase you will get a discount of 10%</p>';

示例4 （设置$user_id）检测已定义的用户是否已进行购买

// Define the user ID
$user_id = 85;

if( has_bought_items( $user_id ) )
        echo '<p>customer have already made a purchase</p>';
    else
        echo '<p>Customer with 0 purshases</p>';

现在，如果$user_id 未定义并且当前用户未登录，则此函数将返回false 的

Answer 4

我会这样做;

这不会进行任何woocommerce模板修改，只会使用过滤器woocommerce_is_purchasable

这些都是功能，

检查客户是否已提供当前产品ID，在版本2.6 +中，woocommerce实施了功能wc_customer_bought_product以检查客户是否已带好产品，我以前从未使用过它在文档上你可以创建一个像下面这样的函数来检查产品ID的数组（如果其中一个已经带来）;
```
function cmk_check_product_brought( $ids=array() ) {
    if ( ! $ids ) return false;
    foreach ( $ids as $product => $id ) {
        if ( wc_customer_bought_product( wp_get_current_user()->user_email, get_current_user_id(), $id ) ) {
            return true;
        }
    }
}
```

我之前检查客户是否已经提供特定产品ID的方法如下，所以你可以使用这些功能中的任何一个，虽然我创建的那个不是用于ID的数组

function cmk_product_ordered( $id ) {
    // Get All order of current user
    $orders = get_posts( array(
        'numberposts' => -1,
        'meta_key'    => '_customer_user',
        'meta_value'  => get_current_user_id(),
        'post_type'   => wc_get_order_types( 'view-orders' ),
        'post_status' => array_keys( wc_get_order_statuses() )
    ) );

    if ( !$orders ) return false; // return if no order found

    $all_ordered_product = array(); // store all products ordered by ID in an array

    foreach ( $orders as $order => $data ) { // Loop through each order
        $order_data = new WC_Order( $data->ID ); // create new object for each order
        foreach ( $order_data->get_items() as $key => $item ) {  // loop through each order item
            // store in array with product ID as key and order date a value
            $all_ordered_product[ $item['product_id'] ] = $data->post_date; 
        }
    }
    // check if defined ID is found in array
    if ( isset( $all_ordered_product[ $id ] ) ) return true;
    else return false;
}

既然我们可以检查产品ID是否已经带来，我们可以在woocommerce_is_purchasable上添加一个过滤器来创建我们自己的条件，下面这个函数就是你想要实现的一个简单的例子，

刚刚更改了$required_purchased和$conditional_purchase值。

function cmk_disable_product_purchase( $purchasable, $product ) {

    // array of products required to be purchase first
    $required_purchased = array( 1, 2);

    // array of restricted/conditional products to be purchase
    $conditional_purchase = array( 3,4,5);

    // Get the ID for the current product
    $product_id = $product->is_type( 'variation' ) ? $product->variation_id : $product->id;

    //return default $purchasable if current product ID is not in restricted array
    if ( !in_array($product_id, $conditional_purchase)) return $purchasable;

    /**
     ** Check if one required products has been purchase;
     **/

    // using cmk_check_product_brought() function, return false if product is not purchase
    if ( ! cmk_check_product_brought( $required_purchased ) ) $purchasable = false;

    // using cmk_product_ordered() function, you can use this instead
    /*if ( cmk_product_ordered( 1 )  || cmk_product_ordered( 2 ) ) {
        $purchasable = $purchasable; //return default if one product is purchased
    } else {
        $purchasable = false;
    }*/

    // Double-check for variations: if parent is not purchasable, then variation is not
    if ( $purchasable && $product->is_type( 'variation' ) ) {
        $purchasable = $product->parent->is_purchasable();
    }

    return $purchasable;
}
add_filter( 'woocommerce_variation_is_purchasable', 'cmk_disable_product_purchase', 10, 2 );
add_filter( 'woocommerce_is_purchasable', 'cmk_disable_product_purchase', 10, 2 );

这应该将产品设置为不可购买（添加到购物车按钮将自动隐藏）。现在，如果您想为不可购买的产品添加消息，您只需使用cmk_disable_product_purchase的相同条件，添加消息并将其挂钩在woocommerce_single_product_summary或您希望显示的任何位置。< / p>

检查客户是否在WooCommerce中购买了特定产品

4 个答案: