Question

我使用所有复选框创建了一个过滤器，以按标签显示特定帖子。我希望返回的帖子的结果包含基于复选框的所有标签。我可以将tax_query设置为relation =＆gt; 'AND'但如果它没有得到所有变量，它什么都不返回。应该允许用户检查他们想要的少量或多个标签过滤器，但结果帖子应该包含所有标签。这是进行处理的函数..

function CaseStudiesAjaxFunction() {
global $post;

$advertiser = isset( $_GET["advertiser"] )? $_GET["advertiser"] : '';
$agency = isset( $_GET["agency"] )? $_GET["agency"] : '';
$automotive = isset( $_GET["automotive"] )? $_GET["automotive"] : '';
$education = isset( $_GET["education"] )? $_GET["education"] : '';
$financial = isset( $_GET["financial"] )? $_GET["financial"] : '';
$retail = isset( $_GET["retail"] )? $_GET["retail"] : '';
$travel = isset( $_GET["travel"] )? $_GET["travel"] : '';
$search = isset( $_GET["search"] )? $_GET["search"] : '';
$social = isset( $_GET["social"] )? $_GET["social"] : '';
$smartpath = isset( $_GET["smartpath"] )? $_GET["smartpath"] : '';
$halogen = isset( $_GET["halogen"] )? $_GET["halogen"] : '';
$kenshoo = isset( $_GET["kenshoo"] )? $_GET["kenshoo"] : '';
$techvalidate = isset( $_GET["techvalidate"] )? $_GET["techvalidate"] : '';
$infinityawards = isset( $_GET["infinityawards"] )? $_GET["infinityawards"] : '';

$args = array(
            'post_type' => 'post',
            'posts_per_page' => 12,
            'tax_query' => array(
                        'relation' => 'OR',
                            array(
                                    'taxonomy' => 'post_tag',
                                    'field' => 'slug',
                                    'terms' => $advertiser
                                ),
                            array(
                                    'taxonomy' => 'post_tag',
                                    'field' => 'slug',
                                    'terms' => $agency
                                ),
                            array(
                                    'taxonomy' => 'post_tag',
                                    'field' => 'slug',
                                    'terms' => $automotive
                                ),
                            array(
                                    'taxonomy' => 'post_tag',
                                    'field' => 'slug',
                                    'terms' => $education
                                ),
                            array(
                                    'taxonomy' => 'post_tag',
                                    'field' => 'slug',
                                    'terms' => $financial
                                ),
                            array(
                                    'taxonomy' => 'post_tag',
                                    'field' => 'slug',
                                    'terms' => $retail
                                ),
                            array(
                                    'taxonomy' => 'post_tag',
                                    'field' => 'slug',
                                    'terms' => $travel
                                ),
                            array(
                                    'taxonomy' => 'post_tag',
                                    'field' => 'slug',
                                    'terms' => $search
                                ),
                            array(
                                    'taxonomy' => 'post_tag',
                                    'field' => 'slug',
                                    'terms' => $social
                                ),
                            array(
                                    'taxonomy' => 'post_tag',
                                    'field' => 'slug',
                                    'terms' => $smartpath
                                ),
                            array(
                                    'taxonomy' => 'post_tag',
                                    'field' => 'slug',
                                    'terms' => $halogen
                                ),
                            array(
                                    'taxonomy' => 'post_tag',
                                    'field' => 'slug',
                                    'terms' => $kenshoo
                                ),
                            array(
                                    'taxonomy' => 'post_tag',
                                    'field' => 'slug',
                                    'terms' => $techvalidate
                                ),
                            array(
                                    'taxonomy' => 'post_tag',
                                    'field' => 'slug',
                                    'terms' => $infinityawards
                                )
                        ),
                        array(
                        'relation' => 'AND',
                            array(
                                    'taxonomy' => 'post_tag',
                                    'field' => 'slug',
                                    'terms' => 'case-studies'
                                )
                        )

        );
$query = new WP_Query($args);
if ($query->have_posts()) : while ($query->have_posts()) : $query->the_post();
    echo '<div class="case-study">';
        echo '<div class="case-study-img-container">';
            the_post_thumbnail();
        echo '</div>';
        the_title(); echo '<br>';
        the_tags();
    echo '</div>';
endwhile; endif;
die();

}

Answer 1

您正在使用tax_query。

我的建议是将所有这些标记组合成逗号分隔的字符串，然后使用标记参数。

http://codex.wordpress.org/Class_Reference/WP_Query#Tag_Parameters

将标记放入数组中以使其更易于处理。如果没有设置值，则不要将值设置为空字符串，而是使用false，以便array_filter()删除它们。

http://php.net/manual/en/function.array-filter.php

将元素内嵌到字符串中，然后设置标记参数。

$tags = array(
    'advertiser' => isset( $_GET["advertiser"] ) ? $_GET["advertiser"] : false,
    'agency'     => isset( $_GET["agency"] ) ? $_GET["agency"] : false,
);

$tag_string = implode( ',', array_filter( $tags ) );

$args = array(
    'post_type' => 'post',
    'posts_per_page' => 12
);

if ( ! empty( $tag_string ) ) {
    $args['tag'] = $tag_string;
}

Wordpress关系分类法发布查询未给出期望的结果

1 个答案: