php - 如果在 WooCommerce 中自动添加包装，则在选择产品重量时不计算最终成本-6ren

php - 如果在 WooCommerce 中自动添加包装，则在选择产品重量时不计算最终成本

转载作者：行者123 更新时间：2023-12-04 15:32:36

在 WooCommerce 中，我使用一个代码来显示牛排重量选择表单，保存选择数据并在购物车、结帐页面、编辑订单时和电子邮件通知中显示此数据。

// Display Custom Checkbox Field
add_action('woocommerce_product_options_general_product_data', 'steak_custom_field_add');
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' )
        )
    );
}

// Save Custom Checkbox Field
add_action('woocommerce_process_product_meta', 'steak_custom_field_save');
function steak_custom_field_save($post_id){
    // Custom Product Checkbox Field
    $steak_checkbox = isset( $_POST['_steak_checkbox'] ) ? 'yes' : 'no';
    update_post_meta($post_id, '_steak_checkbox', esc_attr( $steak_checkbox ));
}

// Display Custom Select Box
add_action( 'woocommerce_before_add_to_cart_button', 'display_steak_custom_field', 0 );
function display_steak_custom_field() {
    global $product;

    // 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="steak_select_box">';

        $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(
                ''      => 'Select...',
                '300g'  => '300g',
                '400g'  => '400g',
                '500g'  => '500g',
                '600g'  => '600g',
                '700g'  => '700g',
                '800g'  => '800g',
                '900g'  => '900g',
                '1000g'  => '1000g'
            )
        ), '' );
        echo $select;
        echo '</div>';
    }
}

// Add as custom cart item data
add_filter( 'woocommerce_add_cart_item_data', 'add_custom_steak_cart_item_data', 10, 21 );
function add_custom_steak_cart_item_data($cart_item_data, $product_id, $variation_id ){

    if( isset( $_POST['steak_custom_options'] ) ) {
        $cart_item_data['steak_option'] = wc_clean( $_POST['steak_custom_options'] );
    }
    return $cart_item_data;
}

// Add custom fields values under cart item name in cart
add_filter( 'woocommerce_cart_item_name', 'steak_custom_field_add_cart', 10, 21 );
function steak_custom_field_add_cart( $item_name, $cart_item, $cart_item_key ) {
    if( ! is_cart() )
        return $item_name;

    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;
}

// Display custom fields values under item name in checkout
add_filter( 'woocommerce_checkout_cart_item_quantity', 'steak_custom_checkout_cart_item_name', 10, 21 );
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'] . 'гр.</div>';
    }
    return $item_qty;
}


// Save chosen select field value to each order item as custom meta data and display it everywhere
add_action('woocommerce_checkout_create_order_line_item', 'save_order_item_steak_field', 10, 21 );
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('wp_footer','add_footer_steak_script');
function add_footer_steak_script(){
    ?>
    <script>
       ( function( $ ) {
   $( document ).ready( function() {
       $(document).on('change', '#steak_custom_options' ,function() {
           $('.add_to_cart_button').data('steak_custom_options', this.value)
       });
   });
 }( jQuery ) );
    </script>
    <?php
}

add_action( 'woocommerce_before_calculate_totals', 'my_before_calculate_totals', 10, 1 );
    function my_before_calculate_totals( $cart ) {
    if ( is_admin() && ! defined( 'DOING_AJAX' ) )
        return;

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

    // Loop through cart items
    foreach ( $cart->get_cart() as $cart_item_key => $cart_item ) {     
        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 );
        }
    }
}

add_action('wp_footer','add_footer_steak_script');
    function add_footer_steak_script() {
    global $woocommerce, $product;
    ?>
    <script type="text/javascript">
        jQuery(document).ready(function ($) {
            console.log('JS works!');

            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 );

                    $( '.woocommerce-Price-amount' ).html( currency + product_total.toFixed(2));

                }
            });
        });
    </script>
    <?php
}

我还使用了一个代码，在将任何菜品添加到购物车时自动添加包装。

 /**
 * 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_id  = 5737; // "LunchBox ID" to be added to cart
    $pakket_id = 5738; // "Pakket ID" to be added to cart
    $exclude_categories = array( 'drink', 'bread' ); // Exclude these categories

    $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;
        }
    }

    /********** 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 );

不幸的是，这两个代码相互冲突，我不明白是什么原因。

如果加了包装，选择产品重量时不计算总量。
在购物车和结帐页面上，数据“牛排重量:300 克”已添加到包裹中。而且这些数据不应该存在。

如何解决这个问题？我很乐意为您提供帮助!

最佳答案

使用相同的钩子(Hook) woocommerce_before_calculate_totals 两次确实会导致问题，因此需要将两个代码合并到一个函数中。

随着代码的编写，现在有一些条件

pakket_id 和 lunchbox_id 产品不得以任何其他方式使用!这些是自动添加的，因此不能由您网站上的用户/访客添加
属于排除类别的产品可能不包含带下拉菜单的重量选项(pakket 和 lunchbox 产品的相同条件)

NOTE: With this piece of code I also added the lunchbox ID, otherwise you will receive a notification of the weight under the lunchbox product, in some cases.
// Add as custom cart item data
function add_custom_steak_cart_item_data( $cart_item_data, $product_id, $variation_id, $quantity ) {  
    if ( !empty( $_POST['steak_custom_options'] ) && $product_id != 5737 ) {
    ...

然后你得到

// 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="steak_select_box">';

        $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(
                ''      => 'Select...',
                '300g'  => '300g',
                '400g'  => '400g',
                '500g'  => '500g',
                '600g'  => '600g',
                '700g'  => '700g',
                '800g'  => '800g',
                '900g'  => '900g',
                '1000g'  => '1000g'
            )
        ), '' );
        echo $select;
        echo '</div>';
    }
}
add_action( 'woocommerce_before_add_to_cart_button', 'display_steak_custom_field', 10, 0 );

// Add jQuery script to footer - change price on single product page
function add_footer_steak_script() {
    // Returns true on a single product page
    if ( is_product() ) {
        global $woocommerce, $product;
        ?>
        <script type="text/javascript">
            jQuery(document).ready(function ($) {
                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 );

                        $( '.woocommerce-Price-amount' ).html( currency + product_total.toFixed(2));

                    }
                });
            });
        </script>
        <?php
    }
}
add_action('wp_footer','add_footer_steak_script', 10, 0 );

// Add as custom cart item data
function add_custom_steak_cart_item_data( $cart_item_data, $product_id, $variation_id, $quantity ) {    
    if ( !empty( $_POST['steak_custom_options'] ) && $product_id != 5737 ) {
        $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_id  = 5737; // "LunchBox ID" to be added to cart
    $pakket_id = 5738; // "Pakket ID" to be added to cart
    $exclude_categories = array( 'drink', 'bread' ); // Exclude these categories

    $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'] . 'гр.</div>';
    }
    return $item_qty;
}
add_filter( 'woocommerce_checkout_cart_item_quantity', 'steak_custom_checkout_cart_item_name', 10, 3 );

// Save chosen select field value to each order item as custom meta data and display it everywhere
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 );

关于php - 如果在 WooCommerce 中自动添加包装，则在选择产品重量时不计算最终成本，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/60868982/

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