WooCommerce - 数量变更时自动更新总价

时间:2014-10-01 08:26:43

标签: php jquery wordpress woocommerce

我一直在寻找好几天,但我还没回答。基本上,我正在尝试用ajax调用替换woocommerce标准“更新购物车”按钮,这会在数量变化时自动更新订单总价。 这是我的HTML

<div class="cart_item">
    <div class="product-thumbnail">
        <a href="http://example.com"><img width="90" height="90" src="path to thumbnail"/></a>
    </div>

    <div class="product-name">
        <a class="cart-page-product__title" href="http://example.com">Product1 name</a>
    </div>

    <div class="product-quantity">
        <div class="quantity">
            <input type="number" step="1"   name="cart[some_security_key][qty]" value="1" class="input-text qty text" size="4"/>
        </div>
    </div>

    <div class="product-subtotal"><span class="amount">2 000</span></div>
        <div class="product-remove">
            <a class="product-remove_link" href="http://example.com/?remove_item">&times;</a>
        </div>
</div>
<div class="cart_item">
    <div class="product-thumbnail">
        <a href="http://example.com"><img width="90" height="90" src="path to thumbnail"/></a>
    </div>

    <div class="product-name">
        <a class="cart-page-product__title" href="http://example.com">Product2 name</a>
    </div>

    <div class="product-quantity">
        <div class="quantity">
            <input type="number" step="1"   name="cart[some_security_key][qty]" value="1" class="input-text qty text" size="4"/>
        </div>
    </div>

    <div class="product-subtotal"><span class="amount">2 000</span></div>
        <div class="product-remove">
            <a class="product-remove_link" href="http://example.com/?remove_item">&times;</a>
        </div>
</div>

在functions.php中,我有一个更新总计的功能:

public function update_total_price() {
        check_ajax_referer( 'update_total_price', 'security' );

        if ( ! defined('WOOCOMMERCE_CART') ) {
            define( 'WOOCOMMERCE_CART', true );
        }

        $cart_updated = false;
            $cart_totals  = isset( $_POST['cart'] ) ? $_POST['cart'] : '';

            if ( sizeof( WC()->cart->get_cart() ) > 0 ) {
                foreach ( WC()->cart->get_cart() as $cart_item_key => $values ) {
                    $_product = $values['data'];

                    // Skip product if no updated quantity was posted
                    if ( ! isset( $_POST['quantity'] ) ) {
                    // if ( ! isset( $cart_totals[ $cart_item_key ]['qty'] ) ) {
                        continue;
                    }

                    // Sanitize
                    $quantity = apply_filters( 'woocommerce_stock_amount_cart_item', apply_filters( 'woocommerce_stock_amount', preg_replace( "/[^0-9\.]/", '', filter_var($_POST['quantity'], FILTER_SANITIZE_NUMBER_INT)) ), $cart_item_key );
                    // $quantity = apply_filters( 'woocommerce_stock_amount_cart_item', apply_filters( 'woocommerce_stock_amount', preg_replace( "/[^0-9\.]/", '', $cart_totals[ $cart_item_key ]['qty'] ) ), $cart_item_key );

                    if ( '' === $quantity || $quantity == $values['quantity'] )
                        continue;

                    // Update cart validation
                    $passed_validation  = apply_filters( 'woocommerce_update_cart_validation', true, $cart_item_key, $values, $quantity );

                    // is_sold_individually
                    if ( $_product->is_sold_individually() && $quantity > 1 ) {
                        wc_add_notice( sprintf( __( 'You can only have 1 %s in your cart.', 'woocommerce' ), $_product->get_title() ), 'error' );
                        $passed_validation = false;
                    }

                    if ( $passed_validation ) {
                        WC()->cart->set_quantity( $cart_item_key, $quantity, false );
                    }

                    $cart_updated = true;
                }
            }

            // Trigger action - let 3rd parties update the cart if they need to and update the $cart_updated variable
            $cart_updated = apply_filters( 'woocommerce_update_cart_action_cart_updated', $cart_updated );

            if ( $cart_updated ) {
                // Recalc our totals
                WC()->cart->calculate_totals();
                woocommerce_cart_totals();
                exit;
            }

    }

Jquery代码是:

jQuery( function( $ ) {

    // wc_cart_params is required to continue, ensure the object exists
    if ( typeof wc_cart_params === 'undefined' ) {
        return false;
    }

    // Cart price update depends on quantity
    //$( document ).on( 'click', '.quantity', function() {


    $( document ).on( 'change', '.quantity, input[type=number]', function() {
        var qty = $( this ).val();
        var currentVal  = parseFloat( qty);

        $( 'div.cart_totals' ).block({ message: null, overlayCSS: { background: '#fff url(' + wc_cart_params.ajax_loader_url + ') no-repeat center', backgroundSize: '16px 16px', opacity: 0.6 } });

        var data = {
            action: 'rf_update_total_price',
            security: rf_cart_params.rf_update_total_price_nonce,
            quantity: currentVal
        };

        $.post( rf_cart_params.ajax_url, data, function( response ) {

            $( 'div.cart_totals' ).replaceWith( response );
            $( 'body' ).trigger( 'rf_update_total_price' );

        });
        return false;
    });
});

如果购物车中只有一个产品,则上述代码效果很好。 enter image description here

但是当我添加其他产品并更改其中一个产品的数量时,我的功能会使用我所有产品的最后一个数量值。

enter image description here

例如,第二张图片的总价格必须为7000(2000 * 1 + 2500 * 2),但它是9000(2000 * 2 + 2500 * 2)。 我是ajax和jquery的新手,所以感谢任何帮助。

3 个答案:

答案 0 :(得分:5)

这是因为您正在更新所有购物车,而不仅仅是产品。

首先,您需要在javascript脚本上发送项目购物车哈希(它不是安全散列,但产品散列包含所有产品变体):

var item_hash = $( this ).attr( 'name' ).replace(/cart\[([\w]+)\]\[qty\]/g, "$1");
var data = {
        action: 'rf_update_total_price',
        security: rf_cart_params.rf_update_total_price_nonce,
        quantity: currentVal,
        hash : item_hash 
    };

然后您可以修改function update_total_price,我已简化;)

function update_total_price() {

    // Skip product if no updated quantity was posted or no hash on WC_Cart
    if( !isset( $_POST['hash'] ) || !isset( $_POST['quantity'] ) ){
        exit;
    }

    $cart_item_key = $_POST['hash'];

    if( !isset( WC()->cart->get_cart()[ $cart_item_key ] ) ){
        exit;
    }

    $values = WC()->cart->get_cart()[ $cart_item_key ];

    $_product = $values['data'];

    // Sanitize
    $quantity = apply_filters( 'woocommerce_stock_amount_cart_item', apply_filters( 'woocommerce_stock_amount', preg_replace( "/[^0-9\.]/", '', filter_var($_POST['quantity'], FILTER_SANITIZE_NUMBER_INT)) ), $cart_item_key );

    if ( '' === $quantity || $quantity == $values['quantity'] )
        exit;

    // Update cart validation
    $passed_validation  = apply_filters( 'woocommerce_update_cart_validation', true, $cart_item_key, $values, $quantity );

    // is_sold_individually
    if ( $_product->is_sold_individually() && $quantity > 1 ) {
        wc_add_notice( sprintf( __( 'You can only have 1 %s in your cart.', 'woocommerce' ), $_product->get_title() ), 'error' );
        $passed_validation = false;
    }

    if ( $passed_validation ) {
        WC()->cart->set_quantity( $cart_item_key, $quantity, false );
    }

    // Recalc our totals
    WC()->cart->calculate_totals();
    woocommerce_cart_totals();
    exit;
}

答案 1 :(得分:3)

这是实现这一目标的更简单方法。所有积分均归Reigel Gallarde

// we are going to hook this on priority 31, so that it would display below add to cart button.
add_action( 'woocommerce_single_product_summary', 'woocommerce_total_product_price', 31 );
function woocommerce_total_product_price() {
    global $woocommerce, $product;
    // let's setup our divs
    echo sprintf('<div id="product_total_price" style="margin-bottom:20px;display:none">%s %s</div>',__('Product Total:','woocommerce'),'<span class="price">'.$product->get_price().'</span>');
    echo sprintf('<div id="cart_total_price" style="margin-bottom:20px;display:none">%s %s</div>',__('Cart Total:','woocommerce'),'<span class="price">'.$product->get_price().'</span>');
    ?>
        <script>
            jQuery(function($){
                var price = <?php echo $product->get_price(); ?>,
                    current_cart_total = <?php echo $woocommerce->cart->cart_contents_total; ?>,
                    currency = '<?php echo get_woocommerce_currency_symbol(); ?>';

                $('[name=quantity]').change(function(){
                    if (!(this.value < 1)) {
                        var product_total = parseFloat(price * this.value),
                        cart_total = parseFloat(product_total + current_cart_total);

                        $('#product_total_price .price').html( currency + product_total.toFixed(2));
                        $('#cart_total_price .price').html( currency + cart_total.toFixed(2));
                    }
                    $('#product_total_price,#cart_total_price').toggle(!(this.value <= 1));

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

答案 2 :(得分:0)

自2016年6月发布WooCommerce 2.6.0起,在单击“更新购物车”按钮后,WooCommerce购物车页面使用Ajax更新购物车总额。 WooCommerce 2.6.0需要WP 4.4或更高版本。

无需担心后端和创建自己的Ajax调用,可以使用分配给“更新购物车”按钮的那个调用。

要立即使用此功能,可以使用我的免费插件,该插件还有一些方便的附加选项:

Ajax Cart AutoUpdate for WooCommerce

或使用子主题执行以下操作。隐藏更新购物车按钮,然后排队脚本,该脚本在购物车页面数量更改时触发默认的更新购物车事件(适用于购物车和迷你购物车小部件)。使用模板重定向挂钩,jQuery依赖项,并确保此脚本仅在购物车页面上加载。

要使用CSS隐藏按钮,请使用.button类而不是标签,以使其与所有WooCommerce版本兼容:

.button[name='update_cart'] {
    display: none!important;
}

或隐藏具有PHP样式的按钮:

add_action('wp_head', 'hide_update_cart_button', 20);
function hide_update_cart_button() {
    echo "<style>.button[name='update_cart']{ display: none!important;}</style>";
}

使脚本依赖于jQuery:

add_action( 'template_redirect', 'auto_update_cart_totals' );
function auto_update_cart_totals() {    
    if (! is_cart() ) return; // Only if it's cart page.
    // Enqueue js file.
    add_action( 'wp_enqueue_scripts', 'my_cart_autoupdate' );           
}

function my_cart_autoupdate( ) {
    // Here goes code to hide CSS button if you decide to use PHP solution for styling.

    wp_enqueue_script( 'my-cart-autoupdate', 'path-to-js-file-its-name-and-extension', array('jquery'), '', true);
}

关于jQuery代码最重要且通常被忽略的事情是设置更新延迟,在此示例中为1000,我的插件允许在设置中更改此值。如果用户在此延迟时间内再次更改数量,它将重置为完整持续时间。如果尚未实现,并且通过单击增量按钮将数量从1更改为10,它将触发9个Ajax调用而不是1。将其放置在.js文件中:

var timeout;

jQuery('div.woocommerce').on('change keyup mouseup', 'input.qty', function(){ // keyup and mouseup for Firefox support
    if (timeout != undefined) clearTimeout(timeout); //cancel previously scheduled event
    if (jQuery(this).val() == '') return; //qty empty, instead of removing item from cart, do nothing
    timeout = setTimeout(function() {
        jQuery('[name="update_cart"]').trigger('click');
    }, 1000 );
});