按 SKU 对购物车 WooCommerce 中产品列表底部的产品进行排序

在 WooCommerce 中，我使用一个代码来显示牛排重量选择表单，保存选择数据并在编辑订单和电子邮件通知时在购物车、结账页面上显示此数据。

我的代码还与在将任何产品添加到购物车时自动添加包装的代码相结合。添加包装发生在 SKU 上。

/**
* Display Custom Checkbox Field
*/
function steak_custom_field_add() {
    global $post;

    // Checkbox
    woocommerce_wp_checkbox(
        array(
            'id' => '_steak_checkbox',
            'label' => __('Steak Weight', 'woocommerce' ),
            'description' => __( 'If necessary, enable steak weight selection', 'woocommerce' )
        )
    );
}
add_action('woocommerce_product_options_general_product_data', 'steak_custom_field_add', 10, 0 );

/**
 * Save Custom Checkbox Field
 */
function steak_custom_field_save( $post_id ) {
    $product = wc_get_product( $post_id );

    // Custom Product Checkbox Field
    $steak_checkbox = isset( $_POST['_steak_checkbox'] ) ? 'yes' : 'no';

    // Update product meta
    $product->update_meta_data( '_steak_checkbox', $steak_checkbox );

    // Save
    $product->save();
}
add_action('woocommerce_process_product_meta', 'steak_custom_field_save', 10, 1 );

/**
 * Display Custom Select Box
 */
function display_steak_custom_field() {
    global $post;

    // Get product
    $product = wc_get_product( $post->ID );

    // If is single product page and have the "steak_checkbox" enabled we display the field
    if ( $product->get_meta( '_steak_checkbox' ) === 'yes' ) {

        echo '<div class="roast_select">';

        $select = woocommerce_form_field( 'steak_custom_options', array(
            'type'          => 'select',
            'class'         => array('my-steak-select-box form-row-wide'),
            'label'         => __('Steak Weight'),
            'required'      => false,
            'return'       => false,
            'options'   => array(
                ''      => 'Please select...',
                '300g'  => '300g',
                '400g'  => '400g',
                '500g'  => '500g',
                '600g'  => '600g',
                '700g'  => '700g',
                '800g'  => '800g',
                '900g'  => '900g',
                '1000g'  => '1000g'
            )
        ), '' );
        echo $select;
        echo '</div>';
        ?>
        <script type="text/javascript">
            jQuery(document).ready(function ($) {
                console.log('it works 1');

                var price = <?php echo $product->get_price(); ?>, currency = '<?php echo get_woocommerce_currency_symbol(); ?>';

                $( '[name=steak_custom_options]' ).change(function(){
                    if (!(this.value < 1)) {
                        var dropdown_val = this.value;
                        var remove_g = dropdown_val.replace( 'g', '' );
                        var remove_double_zero = remove_g.replace( '00', '' );

                        var product_total = parseFloat( price * remove_double_zero );

                        // For single product page
                        $( '.entry-summary .woocommerce-Price-amount' ).html( currency + product_total.toFixed(2));

                        // quick-view-custom-price
                        $( '.quick-view-custom-price .woocommerce-Price-amount' ).html( currency + product_total.toFixed(2));
                    }
                });
            });
        </script>
        <?php
    }
}
add_action( 'woocommerce_before_add_to_cart_button', 'display_steak_custom_field', 10, 0 );

/**
 * Add as custom cart item data
 */
function add_custom_steak_cart_item_data( $cart_item_data, $product_id, $variation_id, $quantity ) {
    // Get product
    $product = wc_get_product( $product_id );

    // Get product sku
    $product_sku = $product->get_sku();

    if ( !empty( $_POST['steak_custom_options'] ) && $product_sku != 'lunchbox' ) {
        $cart_item_data['steak_option'] = $_POST['steak_custom_options'];
    }

    return $cart_item_data;
}
add_filter( 'woocommerce_add_cart_item_data', 'add_custom_steak_cart_item_data', 10, 4 );

/**
 * Add custom fields values under cart item name in cart
 */
function steak_custom_field_add_cart( $item_name, $cart_item, $cart_item_key ) {
    if( is_cart() ) {
        if( isset( $cart_item['steak_option'] ) ) {
            $item_name .= '<div class="my-steak-class"><strong>' . __("Steak Weight", "woocommerce") . ':</strong> ' . $cart_item['steak_option'] . '</div>';
        }
    }

    return $item_name;
}
add_filter( 'woocommerce_cart_item_name', 'steak_custom_field_add_cart', 10, 3 );

/**
 * Calculate the number of lunchboxes and package, based on the number of products in cart.
 */
function add_delivery_charge_to_cart( $cart ) {
    if ( is_admin() && ! defined( 'DOING_AJAX' ) )
        return;

    if ( did_action( 'woocommerce_before_calculate_totals' ) >= 2 )
        return;

    /********** SETTINGS **********/

    $lunchbox_sku  = 'lunchbox'; // "LunchBox SKU" to be added to cart
    $pakket_sku = 'pakket'; // "Pakket SKU" to be added to cart

    $exclude_categories = array( 'drink', 'bread' ); // Exclude these categories

    /********** END SETTINGS **********/

    // Get product ID by SKU
    $lunchbox_id = wc_get_product_id_by_sku( $lunchbox_sku );
    $pakket_id = wc_get_product_id_by_sku( $pakket_sku );

    $category_qty_total = 0; // Total of category quantity items, Don't edit!!

    /********** LOOP THROUGH CART ITEMS **********/

    foreach ( $cart->get_cart() as $cart_item_key => $cart_item ) {
        // Get product id
        $product_id = $cart_item['data']->get_id();

        // Get product quantity
        $product_qty = $cart_item['quantity'];

        // Check if "LunchBox" product is already in cart
        if( $product_id == $lunchbox_id ) {
            $lunchbox_key = $cart_item_key;
            $lunchbox_qty = $product_qty;
        }

        // Check if "Pakket" product is already in cart
        if( $product_id == $pakket_id ) {
            $pakket_key = $cart_item_key;
            $pakket_qty = $product_qty;
        }

        // Check if product belongs to a certain category
        if( has_term( $exclude_categories, 'product_cat', $product_id ) ) {
            $category_qty_total += $product_qty;
        }

        // Check if product, contains steak weight
        if( isset( $cart_item['steak_option'] ) ) {
            // Remove the last 2 zeros (100g becomes 1, 300g becomes 3, 1000g becomes 10, etc...)
            // Remove 'g' from grams
            // convert string to integer
            $chosen_weight = (int) str_replace( '00', '', str_replace('g', '', $cart_item['steak_option']) );

            // Get current price
            $current_price = $cart_item['data']->get_price();

            // Set new price, price is already known per 100g
            $cart_item['data']->set_price( $current_price * $chosen_weight );
        }
    }

    /********** CALCULATE THE TOTALS, SO "LUNCHBOX", "PAKKET" & CATEGORIES ARE NOT USED IN THE TOTALS **********/

    // Get total items in cart, counts number of products & quantity per product
    $total_items_in_cart = $cart->get_cart_contents_count();

    // Total items in cart - category quantity total
    $total_items_in_cart -= $category_qty_total;

    // Lunchbox total = total_items_in_cart & pakket total = total_items_in_cart
    $lunchbox_total = $total_items_in_cart;
    $pakket_total = $total_items_in_cart;

    // Isset lunchbox qty -> lunchbox total - lunchbox qty & pakket total - lunchbox qty
    if ( isset($lunchbox_qty) ) {
        $lunchbox_total -= $lunchbox_qty;
        $pakket_total -= $lunchbox_qty;
    }

    // Isset pakket qty -> lunchbox total - pakket qty & pakket total - pakket qty
    if ( isset($pakket_qty) ) {
        $lunchbox_total -= $pakket_qty;
        $pakket_total = $pakket_total - $pakket_qty;
    }

    /********** APPLY NEW TOTALS TO LUNCHBOX & PAKKET **********/

    // If product "LunchBox" is in cart, we check the quantity to update it if needed
    if ( isset($lunchbox_key) && $lunchbox_qty != $total_items_in_cart ) {
        // Set quantity, lunchbox
        $cart->set_quantity( $lunchbox_key, $lunchbox_total );

    } elseif ( !isset($lunchbox_key) && $total_items_in_cart > 0 ) {
        // Product "LunchBox" is not in cart, we add it
        $cart->add_to_cart( $lunchbox_id, $total_items_in_cart );
    }

    // Total items in cart greater than or equal to 3
    if ( $total_items_in_cart >= 3 ) {
        // Pakket total = pakket_total / 3 = floor(result)
        // Floor = round fractions down, rounding result down
        $pakket_total = floor( $pakket_total / 3 );

        // If product "Pakket" is in cart
        if ( isset($pakket_key) ) {
            // Set quantity, pakket
            $cart->set_quantity( $pakket_key, $pakket_total );

        } elseif ( !isset($pakket_key) ) {
            // Product "Pakket" is not in cart, we add it
            $cart->add_to_cart( $pakket_id, $pakket_total );
        }
    }
}
add_action( 'woocommerce_before_calculate_totals', 'add_delivery_charge_to_cart', 10, 1 );

/**
 * Display custom fields values under item name in checkout
 */
function steak_custom_checkout_cart_item_name( $item_qty, $cart_item, $cart_item_key ) {
    if( isset($cart_item['steak_option']) ) {
        $item_qty .= '<div class="my-steak-class"><strong>' . __("Steak Weight", "woocommerce") . ':</strong> ' . $cart_item['steak_option'] . 'g</div>';
    }
    return $item_qty;
}
add_filter( 'woocommerce_checkout_cart_item_quantity', 'steak_custom_checkout_cart_item_name', 10, 3 );

/**
 * Display custom fields values under item name in checkout
 */
function save_order_item_steak_field( $item, $cart_item_key, $values, $order ) {
    if( isset($values['steak_option']) ) {
        $key = __('Steak Weight', 'woocommerce');
        $value = $values['steak_option'];
        $item->update_meta_data( $key, $value ,$item->get_id());
    }
}
add_action('woocommerce_checkout_create_order_line_item', 'save_order_item_steak_field', 10, 4 );

有一次，用户@7uc1f3r 帮助进行了自定义排序，以便包装始终位于购物车中产品列表的最底部。

function sort_cart_specific_product_at_bottom( $cart ) {    
    // Product id's to to display at tbe bottom of the product list
    $product_ids_last = array( 30, 815 );

    // Set empty arrays
    $products_in_cart = array();
    $products_last = array();
    $cart_contents = array();

    // Loop through cart items
    foreach ( $cart->get_cart() as $cart_item_key => $cart_item ) {
        // Get product id
        $product_id = $cart_item['data']->get_id();

        // In_array — checks if a value exists in an array
        if ( in_array( $product_id, $product_ids_last) ) {
            // Add to products last array
            $products_last[ $cart_item_key ] = $product_id;
        } else {
            // Add to products in cart array
            $products_in_cart[ $cart_item_key ] = $product_id;
        }
    }

    // Merges the elements together so that the values of one are appended to the end of the previous one.
    $products_in_cart = array_merge( $products_in_cart, $products_last );

    // Assign sorted items to cart
    foreach ( $products_in_cart as $cart_item_key => $product_id ) {
        $cart_contents[ $cart_item_key ] = $cart->cart_contents[ $cart_item_key ];
    }

    // Cart contents
    $cart->cart_contents = $cart_contents;

}
add_action( 'woocommerce_cart_loaded_from_session', 'sort_cart_specific_product_at_bottom', 10, 1 );

但不幸的是，排序代码有点过时了，因为现在包裹是按 SKU 添加的，而不是按 ID 添加的。因此，排序不起作用。

如果按 SKU 添加包装，如何更改排序代码？

我将很高兴得到您的帮助！

以下代码将根据产品 sku 对产品进行最后排序

相关主题：

• 按产品 ID 对购物车 WooCommerce 中产品列表底部的产品进行排序 https://stackoverflow.com/questions/60799948/sort-packaging-and-products-in-cart-woocommerce

function sort_cart_specific_product_at_bottom( $cart ) { 
    // Product sku to to display at tbe bottom of the product list
    $product_sku_last = array( 'lunchbox', 'pakket' );

    // Set empty arrays
    $products_in_cart = array();
    $products_last = array();
    $cart_contents = array();

    // Loop through cart items
    foreach ( $cart->get_cart() as $cart_item_key => $cart_item ) {
        // Get product sku
        $product_sku = $cart_item['data']->get_sku();

        // Get product id
        $product_id = $cart_item['data']->get_id();

        // In_array — checks if a value exists in an array
        if ( in_array( $product_sku, $product_sku_last ) ) {
            // Add to products last array
            $products_last[ $cart_item_key ] = $product_id;
        } else {
            // Add to products in cart array
            $products_in_cart[ $cart_item_key ] = $product_id;
        }
    }

    // Merges the elements together so that the values of one are appended to the end of the previous one.
    $products_in_cart = array_merge( $products_in_cart, $products_last );

    // Assign sorted items to cart
    foreach ( $products_in_cart as $cart_item_key => $product_id ) {
        $cart_contents[ $cart_item_key ] = $cart->cart_contents[ $cart_item_key ];
    }

    // Cart contents
    $cart->cart_contents = $cart_contents;

}
add_action( 'woocommerce_cart_loaded_from_session', 'sort_cart_specific_product_at_bottom', 10, 1 );

并且此代码可确保基于 sku 的商品无法从购物车中移除

function prevent_cart_item_remove_link( $link, $cart_item_key ) {
    // Product sku that should not be removable
    $product_sku_last = array( 'lunchbox', 'pakket' );

    if( WC()->cart->find_product_in_cart( $cart_item_key ) ) {
        $cart_item = WC()->cart->cart_contents[ $cart_item_key ];

        // Get product sku
        $product_sku = $cart_item['data']->get_sku();

        // In_array — checks if a value exists in an array
        if ( in_array( $product_sku, $product_sku_last ) ) {
            $link = '';
        }
    }

    return $link;
}
add_filter( 'woocommerce_cart_item_remove_link', 'prevent_cart_item_remove_link', 10, 2 );