我正在开发一个网站，该网站允许用户从主页向购物车添加产品。我在线关注了他们网站上的一些资源和其他SO问题，这些问题允许我通过Ajax将产品添加到购物车中，但如果不重新加载页面，购物车总数将不会更新。
WooCommerce的文档是cpp_header_add_to_cart_fragment函数的来源，但它似乎根本不起作用。最初我使用的是add_to_cart_fragments，但我发现这是不推荐的，我应该使用woocommerce_add_to_cart_fragments，但这种更改也没有帮助。
我读的代码越多。。。我注意到片段是从ajax调用返回的，所以我开始认为我需要用javascript返回的内容替换显示购物车总数的html？
page_home.php
<!-- Cart link to be updated when products are added -->
<a class="cart-contents" href="<?php echo WC()->cart->get_cart_url(); ?>" title="<?php _e( 'View your shopping cart' ); ?>">
<?php echo WC()->cart->get_cart_total(); ?>
</a>
functions.php
add_action('wp_enqueue_scripts', 'cpp_enqueue_scripts');
function cpp_enqueue_scripts() {
/* Other enqueue/registers */
wp_register_script('diy_kits', get_template_directory_uri().'/js/diy_kit.js');
wp_enqueue_script('diy_kits');
wp_localize_script(
'diy_kits',
'cpp_ajax',
array(
'ajaxurl' => admin_url('admin-ajax.php'),
'diy_product_nonce' => wp_create_nonce('diy_product_nonce')
)
);
}
add_action('wp_ajax_nopriv_cpp_ajax-submit', 'cpp_ajax_submit');
add_action('wp_ajax_cpp_ajax-submit', 'cpp_ajax_submit');
function cpp_ajax_submit() {
global $woocommerce;
$nonce = $_POST['nonce'];
if(!wp_verify_nonce($nonce, 'diy_product_nonce')) {
wp_die('Busted!');
}
// Add product to cart... this works
$product_id = $_POST['product_id'];
if( $woocommerce->cart->add_to_cart( $product_id ) ) {
$data = apply_filters('woocommerce_add_to_cart_fragments', array());
do_action('woocommerce_ajax_added_to_cart', $product_id);
} else {
$data = array( 'success' => false, 'product_id' => $product_id );
}
$response = json_encode($data);
header("Content-Type: application/json");
echo $response;
exit;
}
cpp_header_add_to_cart_fragment
// CART UPDATE AJAX this doesn't work
add_filter('woocommerce_add_to_cart_fragments', 'cpp_header_add_to_cart_fragment');
function cpp_header_add_to_cart_fragment( $fragments ) {
global $woocommerce;
ob_start(); ?>
<a class="cart-contents" href="<?php echo WC()->cart->get_cart_url(); ?>" title="<?php _e( 'View your shopping cart' ); ?>">
<?php echo WC()->cart->get_cart_total(); ?>
</a>
<?php
$fragments['a.cart-contents'] = ob_get_clean();
return $fragments;
}
diy_kits.js
// setup and other stuff...
links.click(function(e) {
/* unrelated stuff */
jQuery.post(
cpp_ajax.ajaxurl,
{
action : 'cpp_ajax-submit',
nonce : cpp_ajax.diy_product_nonce,
product_id : jQuery(this).attr('data-product-id')
},
function(response) {
console.log(response);
}
);
});
万一有人碰到这个。。。woocommerce_add_to_cart_fragments在$fragments数组中返回新的html字符串，由于我在ajax函数中调用它，它被转换为json对象。因此，在jquery函数成功部分的diy_kit.js中，我只需要使用该字符串来更新购物车总数。我将粘贴以下编辑：
page_home.php
<div id="cart_container">
<a class="cart-contents" href="<?php echo WC()->cart->get_cart_url(); ?>" title="<?php _e( 'View your shopping cart' ); ?>">
<?php echo WC()->cart->get_cart_total(); ?>
</a>
</div>
diy_kit.js
/*inside jQuery.post() function */
function(response) {
jQuery('#cart_container').html(response['a.cart-contents']);
}
add_filter( 'woocommerce_add_to_cart_fragments', function($fragments) {
ob_start();
?>
<li class="my_cart"><a href="javascript:void(0)" id="sidebarCollapse" class="carticonmain"><svg xmlns="http://www.w3.org/2000/svg" style="display: none;">
<symbol id="shopping-cart" viewBox="0 0 700 700"><title>shopping-cart</title>
<path d="m150.355469 322.332031c-30.046875 0-54.402344 24.355469-54.402344 54.402344 0 30.042969 24.355469 54.398437 54.402344 54.398437 30.042969 0 54.398437-24.355468 54.398437-54.398437-.03125-30.03125-24.367187-54.371094-54.398437-54.402344zm0 88.800781c-19 0-34.402344-15.402343-34.402344-34.398437 0-19 15.402344-34.402344 34.402344-34.402344 18.996093 0 34.398437 15.402344 34.398437 34.402344 0 18.996094-15.402344 34.398437-34.398437 34.398437zm0 0"></path>
<path d="m446.855469 94.035156h-353.101563l-7.199218-40.300781c-4.4375-24.808594-23.882813-44.214844-48.699219-48.601563l-26.101563-4.597656c-5.441406-.96875-10.632812 2.660156-11.601562 8.097656-.964844 5.441407 2.660156 10.632813 8.101562 11.601563l26.199219 4.597656c16.53125 2.929688 29.472656 15.871094 32.402344 32.402344l35.398437 199.699219c4.179688 23.894531 24.941406 41.324218 49.199219 41.300781h210c22.0625.066406 41.546875-14.375 47.902344-35.5l47-155.800781c.871093-3.039063.320312-6.3125-1.5-8.898438-1.902344-2.503906-4.859375-3.980468-8-4zm-56.601563 162.796875c-3.773437 12.6875-15.464844 21.367188-28.699218 21.300781h-210c-14.566407.039063-27.035157-10.441406-29.5-24.800781l-24.699219-139.398437h336.097656zm0 0"></path>
<path d="m360.355469 322.332031c-30.046875 0-54.402344 24.355469-54.402344 54.402344 0 30.042969 24.355469 54.398437 54.402344 54.398437 30.042969 0 54.398437-24.355468 54.398437-54.398437-.03125-30.03125-24.367187-54.371094-54.398437-54.402344zm0 88.800781c-19 0-34.402344-15.402343-34.402344-34.398437 0-19 15.402344-34.402344 34.402344-34.402344 18.996093 0 34.398437 15.402344 34.398437 34.402344 0 18.996094-15.402344 34.398437-34.398437 34.398437zm0 0"></path>
</symbol>
</svg><svg class="icon" viewBox="0 0 40 40"><use xlink:href="#shopping-cart" x="12%" y="16%"></use></svg><i class="item_number">
<?php echo WC()->cart->get_cart_contents_count(); ?>
</i></a></li>
<?php $fragments['li.my_cart'] = ob_get_clean();
return $fragments;
} );
add_filter( 'woocommerce_add_to_cart_fragments', function($fragments) {
ob_start();
?>
<?php woocommerce_mini_cart(); ?>
<?php $fragments['div.minicart_all_data'] = ob_get_clean();
return $fragments;
} );