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<div class="product-thumbnail"><a ><img width="90" height="90" src="縮略圖路徑"/></a>
<div class="product-name"><a class="cart-page-product__title" >Product1 name</a>

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

<div class="product-subtotal"><span class="amount">2 000</span></div><div class="product-remove"><a class="product-remove_link" >&times;</a>

在functions.php中，我有一個更新總數(shù)的函數(shù):

公共函數(shù)update_total_price() {check_ajax_referer('update_total_price', 'security');如果(！定義('WOOCOMMERCE_CART')){定義('WOOCOMMERCE_CART'，真)；}$cart_updated = false;$cart_totals = isset( $_POST['cart'] ) ?$_POST['購物車'] : '';如果(大小(WC()->購物車->get_cart())> 0){foreach ( WC()->cart->get_cart() as $cart_item_key => $values ) {$_product = $values['data'];//如果沒有發(fā)布更新的數(shù)量，則跳過產(chǎn)品如果(！isset($_POST['數(shù)量'])){//if ( !isset( $cart_totals[ $cart_item_key ]['qty'] ) ) {繼續(xù);}//消毒$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)_item), $);//$quantity = apply_filters( 'woocommerce_stock_amount_cart_item', apply_filters( 'woocommerce_stock_amount', preg_replace( "/[^0-9.]/", '', $cart_totals[ $cart_item_key ]['qty'] ) ), $購物車項鍵 );if ( '' === $quantity || $quantity == $values['quantity'] )繼續(xù);//更新購物車驗證$passed_validation = apply_filters('woocommerce_update_cart_validation', true, $cart_item_key, $values, $quantity );//is_sold_individually如果 ( $_product->is_sold_individually() && $quantity > 1 ) {wc_add_notice( sprintf( __( '您的購物車中只能有 1 %s.', 'woocommerce' ), $_product->get_title() ), 'error' );$passed_validation = false;}如果($passed_validation){WC()->cart->set_quantity( $cart_item_key, $quantity, false );}$cart_updated = true;}}//觸發(fā)操作 - 讓第 3 方在需要時更新購物車并更新 $cart_updated 變量$cart_updated = apply_filters( 'woocommerce_update_cart_action_cart_updated', $cart_updated );如果( $cart_updated ){//重新計算我們的總數(shù)WC()->購物車->calculate_totals();woocommerce_cart_totals();出口;}}

而 Jquery 代碼是:

jQuery( 函數(shù)( $ ) {//wc_cart_params 需要繼續(xù)，確保對象存在if ( typeof wc_cart_params === '未定義' ) {返回假；}//購物車價格更新取決于數(shù)量//$( document ).on( 'click', '.quantity', function() {$( document ).on( 'change', '.quantity, input[type=number]', function() {var qty = $( this ).val();var currentVal = parseFloat(數(shù)量);$( 'div.cart_totals' ).block({ message: null, overlayCSS: { background: '#fff url(' + wc_cart_params.ajax_loader_url + ') 無重復(fù)中心', backgroundSize: '16px 16px', opacity: 0.6} });變量數(shù)據(jù) = {動作:'rf_update_total_price'，安全性:rf_cart_params.rf_update_total_price_nonce，數(shù)量:currentVal};$.post( rf_cart_params.ajax_url, 數(shù)據(jù), 函數(shù)( 響應(yīng)) {$( 'div.cart_totals' ).replaceWith( response );$('body').trigger('rf_update_total_price');});返回假；});});

如果購物車中只有一種產(chǎn)品，則上述代碼效果很好.

但是當(dāng)我添加一些其他產(chǎn)品并更改其中一個產(chǎn)品的數(shù)量時，我的函數(shù)會使用我所有產(chǎn)品的最后一個數(shù)量值.

例如，第二張圖片的總價必須是 7000(2000*1+2500*2) 但它是 9000(2000*2+2500*2).我是 ajax 和 jquery 的新手，所以感謝您的幫助.

這是因為您要更新所有購物車，而不僅僅是產(chǎn)品.

首先，您需要在 javascript 腳本中發(fā)送商品購物車哈希(它不是安全哈希，而是包含所有產(chǎn)品變體的產(chǎn)品哈希):

var item_hash = $( this ).attr( 'name' ).replace(/cart[([w]+)][qty]/g, "$1");變量數(shù)據(jù) = {動作:'rf_update_total_price'，安全性:rf_cart_params.rf_update_total_price_nonce，數(shù)量:currentVal，哈希:item_hash};

然后你可以編輯你的函數(shù)update_total_price，我已經(jīng)簡化了;)

function update_total_price() {//如果 WC_Cart 上沒有發(fā)布更新數(shù)量或沒有哈希值，則跳過產(chǎn)品if( !isset( $_POST['hash'] ) || !isset( $_POST['quantity'] ) ){出口;}$cart_item_key = $_POST['hash'];if(!isset(WC()->cart->get_cart()[$cart_item_key])){出口;}$values = WC()->cart->get_cart()[ $cart_item_key ];$_product = $values['data'];//消毒$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)_item), $);if ( '' === $quantity || $quantity == $values['quantity'] )出口;//更新購物車驗證$passed_validation = apply_filters('woocommerce_update_cart_validation', true, $cart_item_key, $values, $quantity );//is_sold_individually如果 ( $_product->is_sold_individually() && $quantity > 1 ) {wc_add_notice( sprintf( __( '您的購物車中只能有 1 %s.', 'woocommerce' ), $_product->get_title() ), 'error' );$passed_validation = false;}如果($passed_validation){WC()->cart->set_quantity( $cart_item_key, $quantity, false );}//重新計算我們的總數(shù)WC()->購物車->calculate_totals();woocommerce_cart_totals();出口;}

I've been searching for several days but I have no answer yet. Basically, I'm trying to replace woocommerce standart "update cart" button with ajax call, which automatically updates order total price when quantity changed. This is my html

<div class="cart_item">
    <div class="product-thumbnail">
        <a ><img width="90" height="90" src="path to thumbnail"/></a>
    </div>

    <div class="product-name">
        <a class="cart-page-product__title" >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" >&times;</a>
        </div>
</div>
<div class="cart_item">
    <div class="product-thumbnail">
        <a ><img width="90" height="90" src="path to thumbnail"/></a>
    </div>

    <div class="product-name">
        <a class="cart-page-product__title" >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" >&times;</a>
        </div>
</div>

In functions.php I have a function for updating totals:

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;
            }

    }

And Jquery code is:

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;
    });
});

The above code works great if only one product is in the cart.

But when I add some other product and change quantity of one of them my function use last value of quantity for all of my products.

For example, total price for the second image must be 7000(2000*1+2500*2) but it is 9000(2000*2+2500*2). I am new to ajax and jquery so appreciate any help.

It's because you are updating all your cart, not just a product.

First you need to send the item cart hash (it's not a security hash, but the product hash with all the product variation) on the javascript script:

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 
    };

Then you can edit your function update_total_price, I've simplified ;)

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;
}

這篇關(guān)于WooCommerce - 數(shù)量變化時自動更新總價的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網(wǎng)！

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