【发布时间】：2019-07-02 03:50:57
【问题描述】：
我有一个自定义的无限滚动，它工作得很好，但它真的很慢。这是处理 ajax 请求的脚本：-
function ga_infinite_scroll() {//trigger this on infinite scroll
add_filter( 'woocommerce_get_price_html', 'ga_show_price' );//filter to fix price range
if(empty($_POST['search_term'] )){
$params = json_decode( stripslashes( $_POST['query'] ), true );
$params['post_status'] = 'publish';
$params['posts_per_page'] = get_option('posts_per_page');
$params['post_type'] = 'product';
$params['paged'] = $_POST['page'] + 1; // we need next page to be loaded
}
else{//search logic here
$search_query = json_decode( stripslashes( $_POST['search_posts'] ), true );
$search_query['post_status'] = 'publish';
$search_query['posts_per_page'] = get_option('posts_per_page');
$search_query['paged'] = $_POST['page'] + 1;
wc_set_loop_prop( 'total', $_POST['search_count'] );
$params = $search_query;
}
ob_start();
query_posts( $params);
if ( have_posts() ) {//product loop
if ( wc_get_loop_prop( 'total' ) ) {
while ( have_posts() ) {
the_post();
wc_get_template_part( 'content', 'product' );
}
}
}
$data = ob_get_clean();
die($data);
exit;
}
add_action( 'wp_ajax_ga_infinite_scroll', 'ga_infinite_scroll' );
add_action( 'wp_ajax_nopriv_ga_infinite_scroll', 'ga_infinite_scroll' );
这是我对问题的简要描述Improving the performance of a custom developed scroll 的另一篇文章。这是 ga_show_price 的代码。
function ga_show_price( $price ) {
global $post, $product, $reg_price_field_slug, $sale_price_field_slug, $user_currency, $wp_query,$wp_object_cache;
if( count($product->get_children()) !== 0 ) {
$variations = $product->get_children();
$regularPriceList = [];
$salePriceList = [];
$lowestPrice;
$salePrice;
// die("here");
if( $product->is_on_sale() ) {
// NOTE: ADD caching HERE!!
if( false === get_transient( 'sales_price' ) ) {
foreach( $variations as $variation ) {
array_push($salePriceList, get_post_meta( $variation, $reg_price_field_slug, true ) );
}
set_transient( 'sales_price', $salePriceList, 12 * HOUR_IN_SECONDS );
}
else{
$salePriceList = get_transient( 'sales_price');
}
$salePrice = min($salePriceList);
$price = add_proper_decimal($salePrice);
return get_woocommerce_currency_symbol() . $price . ' ' . $user_currency;
} else {
// NOTE: ADD caching HERE!!
if( false === get_transient( 'reg_price' ) ) {
foreach( $variations as $variation ) {
array_push($regularPriceList, get_post_meta( $variation, $reg_price_field_slug, true ) );
}
set_transient( 'reg_price', $regularPriceList, 12 * HOUR_IN_SECONDS );
}
else{
$regularPriceList = get_transient( 'reg_price');
}
$lowestPrice = min($regularPriceList);
$price = add_proper_decimal($lowestPrice);
return get_woocommerce_currency_symbol() . $price . ' ' . $user_currency;
}
} else {
$price = get_post_meta( $post->ID, $reg_price_field_slug, true );
$price = add_proper_decimal($price); // pr( $price );
if ( $price == '0.00' ) {
return 'Call for Price';
}
return get_woocommerce_currency_symbol() . $price . ' ' . $user_currency;
}
}
我的 javascript 在这里：-
jQuery(document).ready( function($) {
var url = window.location.origin + '/wp-admin/admin-ajax.php',
canBeLoaded=true,
bottomOffset = 2000; // the distance (in px) from the page bottom when you want to load more posts
$(window).scroll(function(){
var data = {
'action': 'ga_infinite_scroll',
'query': my_ajax_object.posts,
'page' : my_ajax_object.current_page,
//'search_results' : my_ajax_object.ga_search_results,
'search_count' : my_ajax_object.ga_search_count,
'search_posts': my_ajax_object.ga_search_posts,
'search_term' : my_ajax_object.ga_search_term,
'user_currency': my_ajax_object.user_currency,
'reg_price_slug': my_ajax_object.reg_price_field_slug
};
if( $(document).scrollTop() > ( $(document).height() - bottomOffset ) && canBeLoaded == true ){
$.ajax({//limit the ajax calls
url : url,
data:data,
type:'POST',
beforeSend: function( xhr ){
// you can also add your own preloader here
// you see, the AJAX call is in process, we shouldn't run it again until complete
//console.log(data.search_term);
$('#ajax-loader').show();
canBeLoaded = false;
},
success:function(data){
if( data ) {
$('#multiple-products .columns-3 .products ').find('li:last-of-type').after( data ); // where to insert posts
//console.log(url);
canBeLoaded = true; // the ajax is completed, now we can run it again
my_ajax_object.current_page++;
$('#ajax-loader').hide();
}
else{
$('#ajax-loader').html('End of products...').delay(1000).fadeOut();
return;
}
}
});
}
});
//setting if it's a search
});
有没有一种方法可以在 ajax 请求处理脚本（ga_infinite_scroll）之外使用这个 woocommerce_get_price_html 过滤器，因为在 ajax 处理脚本中使用它的速度真的很昂贵？我尝试在 ga_show_price() 中使用瞬变。这里如何实现其他类型的缓存来提高无限滚动的速度？
【问题讨论】：
-
在 ga_show_price 函数中添加了变化产品价格的瞬态并更新了上面的代码
标签： php wordpress optimization woocommerce