我在Wordpress中将产品作为CPT,并尝试根据带有复选框的分类法过滤帖子。 我有两个分类,品牌和尺寸。它们在index.php文件中输出如下:
<form action="<?php echo site_url() ?>/wp-admin/admin-ajax.php" method="POST" id="filter">
<?php
if( $brands = get_terms( array( 'taxonomy' => 'brand' ) ) ) :
foreach( $brands as $brand ) :
echo '<p><input type="checkbox" id="brand_' . $brand->term_id . '" name="brand_' . $brand->term_id . '" /><label for="brand_' . $brand->term_id . '">' . $brand->name . '</label></p>';
endforeach;
endif;
?>
<?php
if( $sizes = get_terms( array( 'taxonomy' => 'sizes' ) ) ) :
foreach( $sizes as $size ) :
echo '<p><input type="checkbox" id="size_' . $size->term_id . '" name="size_' . $size->term_id . '" /><label for="size_' . $size->term_id . '">' . $size->name . '</label></p>';
endforeach;
endif;
?>
<button>Apply filter</button>
<input type="hidden" name="action" value="myfilter">
</form>
在我的functions.php文件中,我有以下内容来构建WP_query并包含分类法:
function misha_filter_function(){
$args = array(
'orderby' => 'date',
'post_type' => 'clothing_product',
'posts_per_page' => -1
);
//brand checkboxes
if( $brands = get_terms( array( 'taxonomy' => 'brand' ) ) ) :
$all_terms = array();
foreach( $brands as $brand ) {
if( isset( $_POST['brand_' . $brand->term_id ] ) && $_POST['brand_' . $brand->term_id] == 'on' )
$all_terms[] = $brand->slug;
}
if( count( $all_terms ) > 0 ) {
$args['tax_query'] = array(
array(
'taxonomy' => 'brand',
'field' => 'slug',
'terms'=> $all_terms
)
);
}
endif;
//sizes checkboxes
if( $sizes = get_terms( array( 'taxonomy' => 'sizes' ) ) ) :
$all_terms = array();
foreach( $sizes as $size ) {
if( isset( $_POST['size_' . $size->term_id ] ) && $_POST['size_' . $size->term_id] == 'on' )
$all_terms[] = $size->slug;
}
if( count( $all_terms ) > 0 ) {
$args['tax_query'] = array(
array(
'taxonomy' => 'sizes',
'field' => 'slug',
'terms'=> $all_terms
)
);
}
endif;
$query = new WP_Query( $args );
if( $query->have_posts() ) :
while( $query->have_posts() ): $query->the_post();
echo '<h2>' . $query->post->post_title . '</h2>';
endwhile;
wp_reset_postdata();
else :
echo 'No posts found';
endif;
die();
}
add_action('wp_ajax_myfilter', 'misha_filter_function');
add_action('wp_ajax_nopriv_myfilter', 'misha_filter_function');
这是scripts.js中的AJAX / jQuery:
jQuery(function($){
$('#filter').submit(function(){
var filter = $('#filter');
$.ajax({
url:filter.attr('action'),
data:filter.serialize(), // form data
type:filter.attr('method'), // POST
beforeSend:function(xhr){
filter.find('button').text('Processing...'); // changing the button label
},
success:function(data){
filter.find('button').text('Apply filter'); // changing the button label back
$('#response').html(data); // insert data
}
});
return false;
});
});
我所拥有的是半工作结果,其中为所有可用的品牌和尺寸创建了复选框,并且可以进行过滤。 问题在于,如果检查尺寸XL和品牌耐克,它会拉动所有尺寸为XL的产品,甚至不是耐克的品牌,这不是我想要的。
查看Wordpress Codex,
tax_query采用一系列税务查询参数数组(它需要一组数组)。此构造允许您通过使用第一个(外部)数组中的关系参数来查询多个分类,以描述分类数组之间的布尔关系。
所以我猜这两个分类法应该是tax_query数组中的两个独立数组,但是可以以某种方式与foreach循环组合吗?
foreach( $brands as $brand ) {
if( isset( $_POST['brand_' . $brand->term_id ] ) && $_POST['brand_' . $brand->term_id] == 'on' )
$all_terms[] = $brand->slug;
}
非常感谢
答案 0 :(得分:2)
对Oscar解决方案的补充 如果有人想根据一个分类来确定分类“ AND”或“ OR”之间的关系,请选择多少分类: 这是我的一些小调整:
if (empty($brands_terms) || empty($sizes_terms)) {
$relation = 'OR';
}else{
$relation = 'AND';
}
在查询arg中这样写;
'relation' => $relation,
答案 1 :(得分:1)
以下是我如何运作
<强>的functions.php 强>
function misha_filter_function(){
//brands checkboxes
if( $brands = get_terms( array( 'taxonomy' => 'brand' ) ) ) :
$brands_terms = array();
foreach( $brands as $brand ) {
if( isset( $_POST['brand_' . $brand->term_id ] ) && $_POST['brand_' . $brand->term_id] == 'on' )
$brands_terms[] = $brand->slug;
}
endif;
//sizes checkboxes
if( $sizes = get_terms( array( 'taxonomy' => 'sizes' ) ) ) :
$sizes_terms = array();
foreach( $sizes as $size ) {
if( isset( $_POST['size_' . $size->term_id ] ) && $_POST['size_' . $size->term_id] == 'on' )
$sizes_terms[] = $size->slug;
}
endif;
$args = array(
'orderby' => 'date',
'post_type' => 'clothing_product',
'posts_per_page' => -1,
'tax_query' => array(
'relation' => 'AND',
array(
'taxonomy' => 'brand',
'field' => 'slug',
'terms' => $brands_terms
),
array(
'taxonomy' => 'sizes',
'field' => 'slug',
'terms' => $sizes_terms
)
)
);
$query = new WP_Query( $args );
if( $query->have_posts() ) :
while( $query->have_posts() ): $query->the_post();
echo '<h2>' . $query->post->post_title . '</h2>';
endwhile;
wp_reset_postdata();
else :
echo 'No posts found';
endif;
die();
}
add_action('wp_ajax_myfilter', 'misha_filter_function');
add_action('wp_ajax_nopriv_myfilter', 'misha_filter_function');
<强>表格强>
<form action="<?php echo site_url() ?>/wp-admin/admin-ajax.php" method="POST" id="filter">
<div>
<?php
if( $brands = get_terms( array( 'taxonomy' => 'brand' ) ) ) :
echo '<ul class="brands-list">';
foreach( $brands as $brand ) :
echo '<input type="checkbox" class="" id="brand_' . $brand->term_id . '" name="brand_' . $brand->term_id . '" /><label for="brand_' . $brand->term_id . '">' . $brand->name . '</label>';
if ($brand !== end($brands)) { echo '<li class="list-spacer">/</li>'; }
endforeach;
echo '</ul>';
endif;
?>
</div>
<div>
<?php
if( $sizes = get_terms( array( 'taxonomy' => 'sizes' ) ) ) :
echo '<ul class="sizes-list">';
foreach( $sizes as $size ) :
echo '<input type="checkbox" class="" id="size_' . $size->term_id . '" name="size_' . $size->term_id . '" /><label for="size_' . $size->term_id . '">' . $size->name . '</label>';
if ($size !== end($sizes)) { echo '<li class="list-spacer">/</li>'; }
endforeach;
echo '</ul>';
endif;
?>
</div>
<button class="btn btn-primary">Filter</button>
<input type="hidden" name="action" value="myfilter">
</form>
主要是将税务查询数组放在一个地方,关系=&gt;和。没有改变jQuery / AJAX。需要注意的是,此代码并未显示全部&#34;如果没有选中框。