我創建了一個自定義帖子型別，它能夠擁有自定義分類法。
在自定義帖子型別的 Single 上，我希望能夠包含“上一篇文章”和“下一篇文章”按鈕，這些按鈕僅在有上一篇和下一篇文章時才顯示。
在functions.php中設定自定義帖子型別：
function the_custom_post_types() {
$types = array(
// Gallery
array(
'the_type' => 'gallery', // becomes the archive url and used in archive template name (archive-{the_type}.php)
'single' => 'single',
'plural' => 'plural',
'display' => 'Gallery',
'icon' => 'dashicons-art',
'show_in_rest' => false,
'supports' => array( 'title', 'editor', 'custom-fields', 'post_tag', 'collection', 'thumbnail' ),
'taxonomies' => array( 'collection' ),
),
// ... other CPTs ...
);
foreach ($types as $type) {
$the_type = $type['the_type'];
$single = $type['single'];
$plural = $type['plural'];
$display = $type['display'];
$icon = $type['icon'];
$gutenburg = $type['show_in_rest'];
$supports = $type['supports'];
$taxonomies = $type['taxonomies'];
$labels = array(
'name' => _x($display, 'post type general name'),
'singular_name' => _x($single, 'post type singular name'),
'add_new' => _x('Add New', $single),
'add_new_item' => __('Add New '. $single),
'edit_item' => __('Edit '.$single),
'new_item' => __('New '.$single),
'view_item' => __('View all '.$single),
'search_items' => __('Search all'.$plural),
'not_found'. => __('No '.$plural.' found'),
'not_found_in_trash' => __('No '.$plural.' found in Trash'),
'parent_item_colon' => ''
);
$args = array(
'labels' => $labels,
'public' => true,
'publicly_queryable' => true,
'show_ui' => true,
'query_var' => true,
'rewrite' => true,
'capability_type' => 'post',
'has_archive' => true,
'hierarchical' => true,
'show_in_rest' => $gutenburg,
'menu_position' => 21,
'supports' => $supports,
'menu_icon' => $icon,
'taxonomies' => $taxonomies
);
register_post_type($the_type, $args);
flush_rewrite_rules();
}
}
add_action('init', 'the_custom_post_types');
并且分類法以類似的方式創建，如下所示：
function scaffolding_custom_taxonomies() {
$types = array(
array(
'the_type' => 'collection',
'single' => 'Collection',
'plural' => 'Collections',
'display' => 'Collections',
'post_types' => array( 'gallery' )
)
);
foreach ($types as $type) {
$the_type = $type['the_type'];
$single = $type['single'];
$plural = $type['plural'];
$display = $type['display'];
$post_types = $type['post_types'];
$labels = array(
'name' => _x( $display, 'taxonomy general name' ),
'singular_name' => _x( $single, 'taxonomy singular name' ),
'search_items' => __( 'Search ' . $plural ),
'all_items' => __( 'All ' . $plural ),
'parent_item' => __( 'Parent ' . $single ),
'parent_item_colon' => __( 'Parent ' . $single . ':' ),
'edit_item' => __( 'Edit ' . $single ),
'update_item' => __( 'Update ' . $single ),
'add_new_item' => __( 'Add New ' . $single ),
'new_item_name' => __( 'New ' . $single . ' Name' ),
'menu_name' => __( $plural ),
);
$rewrite = array(
'slug' => $the_type
);
$args = array(
'hierarchical' => true,
'labels' => $labels,
'show_ui' => true,
'show_admin_column' => true,
'query_var' => true,
'rewrite' => $rewrite
);
register_taxonomy( $the_type, $post_types, $args);
flush_rewrite_rules();
}
}
add_action( 'init', 'scaffolding_custom_taxonomies', 0 );
目前，我已將以下代碼用于單頁。
<nav class="artwork__pagination">
<div class="artwork__prev"><?php previous_post_link( '%link', 'previous' ); ?></div>
<div class="artwork__next"><?php next_post_link( '%link', 'next' ); ?></div>
</nav>
這會回圈遍歷 CPT 中的所有帖子，而不僅僅是當前類別中的帖子。
如果我像這樣在陣列中包含“true”：
<nav class="artwork__pagination">
<div class="artwork__prev"><?php previous_post_link( '%link', 'previous', true ); ?></div>
<div class="artwork__next"><?php next_post_link( '%link', 'next', true ); ?></div>
</nav>
它什么也不回傳。
如何獲取要顯示的鏈接并將它們限制為僅在同一自定義類別中的鏈接？
uj5u.com熱心網友回復：
下一個和上一個帖子鏈接函式包括一個分類引數，默認為category. 由于您的分類被命名collection，這應該可以作業。
/*
* The parameters for next/previous post as defined in the function.
* @param string $format Optional. Link anchor format. Default '« %link'.
* @param string $link Optional. Link permalink format. Default '%title'.
* @param bool $in_same_term Optional. Whether link should be in a same taxonomy term. Default false.
* @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. Default empty.
* @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'.
*/
?>
<nav class="artwork__pagination">
<div class="artwork__prev"><?php previous_post_link( '%link', 'previous', true, '', 'collection' ); ?></div>
<div class="artwork__next"><?php next_post_link( '%link', 'next', true, '', 'collection' ); ?></div>
</nav>
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