【发布时间】：2017-04-08 10:52:48
【问题描述】：
我必须为我的 WP 网站创建一些产品过滤器。我找到了这个 PHP 脚本：
$GLOBALS['my_query_filters'] = array(
'field_1' => 'forma',
'field_2' => 'posa',
'field_3' => 'conduttore',
'field_4' => 'isolante',
'field_5' => 'raggio_minimo_di_curvatura',
'field_6' => 'guaina',
'field_7' => 'marchiatura',
'field_8' => 'tensione_di_esercizio',
'field_9' => 'temp_max_esercizio',
'field_10' => 'temp_min_di_inst',
'field_11' => 'temp_max_corto'
);
// action
add_action('pre_get_posts', 'my_pre_get_posts', 10, 1);
function my_pre_get_posts( $query ) {
// bail early if is in admin
if( is_admin() ) {
return;
}
// get meta query
$meta_query = $query->get('meta_query');
// loop over filters
foreach( $GLOBALS['my_query_filters'] as $key => $name ) {
// continue if not found in url
if( empty($_GET[ $name ]) ) {
continue;
}
// get the value for this filter
// eg: http://www.website.com/events?city=melbourne,sydney
$value = explode(',', $_GET[ $name ]);
// append meta query
$meta_query[] = array(
'key' => $name,
'value' => $value,
'compare' => 'IN',
);
}
// update meta query
$query->set('meta_query', $meta_query);
}
其中 $GLOBALS['my_query_filters'] 是我按照找到的说明创建的。我将此代码插入到 function.php 文件中。
这是店铺页面代码：
<?php
/**
* The Template for displaying product archives, including the main shop page which is a post type archive
*
* This template can be overridden by copying it to yourtheme/woocommerce/archive-product.php.
*
* HOWEVER, on occasion WooCommerce will need to update template files and you
* (the theme developer) will need to copy the new files to your theme to
* maintain compatibility. We try to do this as little as possible, but it does
* happen. When this occurs the version of the template file will be bumped and
* the readme will list any important changes.
*
* @see https://docs.woocommerce.com/document/template-structure/
* @author WooThemes
* @package WooCommerce/Templates
* @version 2.0.0
*/
if ( ! defined( 'ABSPATH' ) ) {
exit; // Exit if accessed directly
}
get_header( 'shop' ); ?>
<?php
/**
* woocommerce_before_main_content hook.
*
* @hooked woocommerce_output_content_wrapper - 10 (outputs opening divs for the content)
* @hooked woocommerce_breadcrumb - 20
*/
do_action( 'woocommerce_before_main_content' );
?>
<?php if ( apply_filters( 'woocommerce_show_page_title', true ) ) : ?>
<h1 class="page-title"><?php woocommerce_page_title(); ?></h1>
<?php endif; ?>
<div id="archive-filters">
<?php foreach( $GLOBALS['my_query_filters'] as $key => $name ):
// get the field's settings without attempting to load a value
$field = get_field_object($key, false, false);
// set value if available
if( isset($_GET[ $name ]) ) {
$field['value'] = explode(',', $_GET[ $name ]);
}
// create filter
?>
<div class="filter" data-filter="<?php echo $name; ?>">
<?php create_field( $field ); ?>
</div>
<?php endforeach; ?>
</div>
<script type="text/javascript">
(function($) {
// change
$('#archive-filters').on('change', 'input[type="checkbox"]', function(){
// vars
var url = '<?php echo home_url('property'); ?>';
args = {};
// loop over filters
$('#archive-filters .filter').each(function(){
// vars
var filter = $(this).data('filter'),
vals = [];
// find checked inputs
$(this).find('input:checked').each(function(){
vals.push( $(this).val() );
});
// append to args
args[ filter ] = vals.join(',');
});
// update url
url += '?';
// loop over args
$.each(args, function( name, value ){
url += name + '=' + value + '&';
});
// remove last &
url = url.slice(0, -1);
// reload page
window.location.replace( url );
});
})(jQuery);
</script>
<?php
/**
* woocommerce_archive_description hook.
*
* @hooked woocommerce_taxonomy_archive_description - 10
* @hooked woocommerce_product_archive_description - 10
*/
do_action( 'woocommerce_archive_description' );
?>
<?php if ( have_posts() ) : ?>
<?php
/**
* woocommerce_before_shop_loop hook.
*
* @hooked woocommerce_result_count - 20
* @hooked woocommerce_catalog_ordering - 30
*/
do_action( 'woocommerce_before_shop_loop' );
?>
<?php woocommerce_product_loop_start(); ?>
<?php woocommerce_product_subcategories(); ?>
<?php while ( have_posts() ) : the_post(); ?>
<?php wc_get_template_part( 'content', 'product' ); ?>
<?php endwhile; // end of the loop. ?>
<?php woocommerce_product_loop_end(); ?>
<?php
/**
* woocommerce_after_shop_loop hook.
*
* @hooked woocommerce_pagination - 10
*/
do_action( 'woocommerce_after_shop_loop' );
?>
<?php elseif ( ! woocommerce_product_subcategories( array( 'before' => woocommerce_product_loop_start( false ), 'after' => woocommerce_product_loop_end( false ) ) ) ) : ?>
<?php wc_get_template( 'loop/no-products-found.php' ); ?>
<?php endif; ?>
<?php
/**
* woocommerce_after_main_content hook.
*
* @hooked woocommerce_output_content_wrapper_end - 10 (outputs closing divs for the content)
*/
do_action( 'woocommerce_after_main_content' );
?>
<?php
/**
* woocommerce_sidebar hook.
*
* @hooked woocommerce_get_sidebar - 10
*/
do_action( 'woocommerce_sidebar' );
?>
<?php get_footer( 'shop' ); ?>
结果仅在商店页面中有十个空行（插入数组中的过滤器编号相同），但其他什么都没有发生。 如何完成过滤器的创建？ 我可以在你的 meta_query 需要嵌套数组之间添加一个关系吗？ 你能帮我吗？ 谢谢！
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标签： php wordpress plugins filter