我想只显示一个帖子的主要类别,因为它有多个类别。目前使用此代码:
<?php
$perma_cat = get_post_meta($post->ID , '_category_permalink', true);
if ( $perma_cat != null ) {
$cat_id = $perma_cat['category'];
$category = get_category($cat_id);
} else {
$categories = get_the_category();
$category = $categories[0];
}
$category_link = get_category_link($category);
$category_name = $category->name;
?>
<a href="<?php echo $category_link ?>"><?php echo $category_name ?></a> <span class="ion-ios-arrow-right"></span></li>
目前找不到太多关于此的文档。有人建议如何改进?
答案 0 :(得分:2)
请注意,这只有在你使用Yoast实施&#34; primary&#34;类别 - 但我相信这就是你正在做的事情 - 所以这个代码块(由Jawinn在github上编写)应该可以工作:
<?php
// SHOW YOAST PRIMARY CATEGORY, OR FIRST CATEGORY
$category = get_the_category();
$useCatLink = true;
// If post has a category assigned.
if ($category){
$category_display = '';
$category_link = '';
if ( class_exists('WPSEO_Primary_Term') ){
// Show the post's 'Primary' category, if this Yoast feature is available, & one is set
$wpseo_primary_term = new WPSEO_Primary_Term( 'category', get_the_id() );
$wpseo_primary_term = $wpseo_primary_term->get_primary_term();
$term = get_term( $wpseo_primary_term );
if (is_wp_error($term)) {
// Default to first category (not Yoast) if an error is returned
$category_display = $category[0]->name;
$category_link = get_category_link( $category[0]->term_id );
} else {
// Yoast Primary category
$category_display = $term->name;
$category_link = get_category_link( $term->term_id );
}
}
else {
// Default, display the first category in WP's list of assigned categories
$category_display = $category[0]->name;
$category_link = get_category_link( $category[0]->term_id );
}
// Display category
if ( !empty($category_display) ){
if ( $useCatLink == true && !empty($category_link) ){
echo '<span class="post-category">';
echo '<a href="'.$category_link.'">'.htmlspecialchars($category_display).'</a>';
echo '</span>';
} else {
echo '<span class="post-category">'.htmlspecialchars($category_display).'</span>';
}
}
}
?>