按字母顺序循环 return 所有 Woocommerce 产品标签

Question

我正在尝试在 WordPress 中为 woocommerce 主题创建一个循环，以按字母顺序取出所有产品标签以简单的方式 "heading with A below it all tags starts with A letter etc." 我正在使用代码，但它的 return null

<?php
            $tags = get_tags();
$html = '<div class="post_tags">';
foreach ( $tags as $tag ) {
$tag_link = get_tag_link( $tag->term_id );

$html .= "<a href='{$tag_link}' title='{$tag->name} Tag' class='{$tag- 
>slug}'>";
$html .= "{$tag->name}</a>";
}
$html .= '</div>';
echo $html;
            ?>

Answer 1

get_tags() 函数检索 post_tag 分类法中每个术语的对象数组。 WooCommerce 产品不使用 post_tag，它们使用 product_tag 分类法。

您要使用的函数是get_terms():

$terms = get_terms(
    array( 
        'hide_empty' => true,
        'taxonomy' => 'product_tag',
    ) 
);
$html = '<div class="post_tags">';
if($terms){
    foreach($terms as $term){
        $term_link = get_term_link( $term->term_id, 'product_tag' );
        $html .= "<a href='" . $term_link . "' title='" . $term->name . " Tag' class='" . $term->slug . "'>" . $term->name . "</a>";
    }
}
$html .= "</div>";
echo $html;

如果您需要按字母顺序排列，请查看 get_terms_orderby()

Answer 2

您还可以将 WP_Term_Query 与 Woocommerce 产品标签自定义分类法一起使用，以按字母顺序获取所有相关术语：

$taxonomy  = 'product_tag';
$tags_html = [];
$tquery    = new WP_Term_Query( array(
    'taxonomy'     => $taxonomy,
    'orderby'      => 'name',
    'order'        => 'ASC',
    'hide_empty'   => false,
) );

// 1st Loop: Go through each term and format it
foreach($tquery->get_terms() as $term){
    $link   = get_term_link( $term->term_id, $taxonomy );
    $letter = $term->slug[0];
    // Set alphabetically by letter each product tag formatted html (with the class, the link and the count (optionally)
    $tags_html[$letter][] = '<a class="'.$term->slug.'" href="'.$link.'">'.$term->name.'&nbsp;('.$term->count.')'.'</a>';
}

echo '<div class="product_tags">';
// 2nd Loop: Display all formatted product tags grouped by letter alphabetically
foreach( $tags_html as $letter => $values ){
    echo '<div class="letter-'.$letter.'">Letter '.strtoupper($letter).':&nbsp;'.implode(' - ', $values).'</div>';
}
echo '</div>';

经过测试并可以正常工作。

编辑与您的评论相关的内容

要限制每个字母的标签数量，您将使用：

$taxonomy  = 'product_tag';
$tags_html = [];
$tquery    = new WP_Term_Query( array(
    'taxonomy'     => $taxonomy,
    'orderby'      => 'name',
    'order'        => 'ASC',
    'hide_empty'   => false,
) );

// 1st Loop: Go through each term and format it
foreach($tquery->get_terms() as $term){
    $link   = get_term_link( $term->term_id, $taxonomy );
    $letter = $term->slug[0];

    // Get the existing array keys for a letter
    $keys   = isset($tags_html[$letter]) ? array_keys($tags_html[$letter]) : array();
    // Limit to 5 items by letter
    if( sizeof($keys) < 5 ){
        // Set alphabetically by letter each product tag formatted html (with the class, the link and the count (optionally)
        $tags_html[$letter][] = '<a class="'.$term->slug.'" href="'.$link.'">'.$term->name.'&nbsp;('.$term->count.')'.'</a>';
    }
}

echo '<div class="product_tags">';
// 2nd Loop: Display all formatted product tags grouped by letter alphabetically
foreach( $tags_html as $letter => $values ){
    echo '<div class="letter-'.$letter.'">Letter '.strtoupper($letter).':&nbsp;'.implode(' - ', $values).'</div>';
}
echo '</div>';

未测试…

按字母顺序循环 return 所有 Woocommerce 产品标签

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