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编辑：post-navigation-link.php

<?php
/**
 * Server-side rendering of the `core/post-navigation-link` block.
 *
 * @package WordPress
 */

/**
 * Renders the `core/post-navigation-link` block on the server.
 *
 * @since 5.9.0
 *
 * @param array  $attributes Block attributes.
 * @param string $content    Block default content.
 *
 * @return string Returns the next or previous post link that is adjacent to the current post.
 */
function render_block_core_post_navigation_link( $attributes, $content ) {
	if ( ! is_singular() ) {
		return '';
	}

// Get the navigation type to show the proper link. Available options are `next|previous`.
	$navigation_type = isset( $attributes['type'] ) ? $attributes['type'] : 'next';
	// Allow only `next` and `previous` in `$navigation_type`.
	if ( ! in_array( $navigation_type, array( 'next', 'previous' ), true ) ) {
		return '';
	}
	$classes = "post-navigation-link-$navigation_type";
	if ( isset( $attributes['textAlign'] ) ) {
		$classes .= " has-text-align-{$attributes['textAlign']}";
	}
	$wrapper_attributes = get_block_wrapper_attributes(
		array(
			'class' => $classes,
		)
	);
	// Set default values.
	$format = '%link';
	$link   = 'next' === $navigation_type ? _x( 'Next', 'label for next post link' ) : _x( 'Previous', 'label for previous post link' );
	$label  = '';

// Only use hardcoded values here, otherwise we need to add escaping where these values are used.
	$arrow_map = array(
		'none'    => '',
		'arrow'   => array(
			'next'     => '→',
			'previous' => '←',
		),
		'chevron' => array(
			'next'     => '»',
			'previous' => '«',
		),
	);

// If a custom label is provided, make this a link.
	// `$label` is used to prepend the provided label, if we want to show the page title as well.
	if ( isset( $attributes['label'] ) && ! empty( $attributes['label'] ) ) {
		$label = "{$attributes['label']}";
		$link  = $label;
	}

// If we want to also show the page title, make the page title a link and prepend the label.
	if ( isset( $attributes['showTitle'] ) && $attributes['showTitle'] ) {
		/*
		 * If the label link option is not enabled but there is a custom label,
		 * display the custom label as text before the linked title.
		 */
		if ( ! $attributes['linkLabel'] ) {
			if ( $label ) {
				$format = '' . wp_kses_post( $label ) . ' %link';
			}
			$link = '%title';
		} elseif ( isset( $attributes['linkLabel'] ) && $attributes['linkLabel'] ) {
			// If the label link option is enabled and there is a custom label, display it before the title.
			if ( $label ) {
				$link = '' . wp_kses_post( $label ) . ' %title';
			} else {
				/*
				 * If the label link option is enabled and there is no custom label,
				 * add a colon between the label and the post title.
				 */
				$label = 'next' === $navigation_type ? _x( 'Next:', 'label before the title of the next post' ) : _x( 'Previous:', 'label before the title of the previous post' );
				$link = sprintf(
					'%1$s %2$s',
					wp_kses_post( $label ),
					'%title'
				);
			}
		}
	}

// Display arrows.
	if ( isset( $attributes['arrow'] ) && 'none' !== $attributes['arrow'] && isset( $arrow_map[ $attributes['arrow'] ] ) ) {
		$arrow = $arrow_map[ $attributes['arrow'] ][ $navigation_type ];

if ( 'next' === $navigation_type ) {
			$format = '%link' . $arrow . '';
		} else {
			$format = '' . $arrow . '%link';
		}
	}

/*
	 * The dynamic portion of the function name, `$navigation_type`,
	 * Refers to the type of adjacency, 'next' or 'previous'.
	 *
	 * @see https://developer.wordpress.org/reference/functions/get_previous_post_link/
	 * @see https://developer.wordpress.org/reference/functions/get_next_post_link/
	 */
	$get_link_function = "get_{$navigation_type}_post_link";

if ( ! empty( $attributes['taxonomy'] ) ) {
		$content = $get_link_function( $format, $link, true, '', $attributes['taxonomy'] );
	} else {
		$content = $get_link_function( $format, $link );
	}

return sprintf(
		'<div %1$s>%2$s</div>',
		$wrapper_attributes,
		$content
	);
}

/**
 * Registers the `core/post-navigation-link` block on the server.
 *
 * @since 5.9.0
 */
function register_block_core_post_navigation_link() {
	register_block_type_from_metadata(
		__DIR__ . '/post-navigation-link',
		array(
			'render_callback' => 'render_block_core_post_navigation_link',
		)
	);
}
add_action( 'init', 'register_block_core_post_navigation_link' );

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accordion	drwxr-xr-x	-	2026-05-01 02:14	删除
accordion-heading	drwxr-xr-x	-	2025-12-04 05:41	删除
accordion-item	drwxr-xr-x	-	2025-12-04 05:41	删除
accordion-panel	drwxr-xr-x	-	2025-12-04 05:41	删除
archives	drwxr-xr-x	-	2022-11-15 19:03	删除
audio	drwxr-xr-x	-	2022-11-15 19:03	删除
avatar	drwxr-xr-x	-	2022-11-15 19:03	删除
block	drwxr-xr-x	-	2024-07-17 11:52	删除
button	drwxr-xr-x	-	2022-11-15 19:03	删除
buttons	drwxr-xr-x	-	2022-11-15 19:03	删除
calendar	drwxr-xr-x	-	2022-11-15 19:03	删除
categories	drwxr-xr-x	-	2022-11-15 19:03	删除
code	drwxr-xr-x	-	2022-11-15 19:03	删除
column	drwxr-xr-x	-	2022-11-15 19:03	删除
columns	drwxr-xr-x	-	2022-11-15 19:03	删除
comment-author-name	drwxr-xr-x	-	2024-11-13 13:00	删除
comment-content	drwxr-xr-x	-	2022-11-15 19:03	删除
comment-date	drwxr-xr-x	-	2024-11-13 13:00	删除
comment-edit-link	drwxr-xr-x	-	2024-11-13 13:00	删除
comment-reply-link	drwxr-xr-x	-	2024-11-13 13:00	删除
comment-template	drwxr-xr-x	-	2022-11-15 19:03	删除
comments	drwxr-xr-x	-	2022-11-15 19:03	删除
comments-pagination	drwxr-xr-x	-	2022-11-15 19:03	删除
comments-pagination-next	drwxr-xr-x	-	2022-11-15 19:03	删除
comments-pagination-numbers	drwxr-xr-x	-	2022-11-15 19:03	删除
comments-pagination-previous	drwxr-xr-x	-	2022-11-15 19:03	删除
comments-title	drwxr-xr-x	-	2022-11-15 19:03	删除
cover	drwxr-xr-x	-	2026-05-01 02:14	删除
details	drwxr-xr-x	-	2026-05-01 03:37	删除
embed	drwxr-xr-x	-	2022-11-15 19:03	删除
file	drwxr-xr-x	-	2022-11-15 19:03	删除
footnotes	drwxr-xr-x	-	2023-08-09 11:43	删除
freeform	drwxr-xr-x	-	2026-05-01 03:14	删除
gallery	drwxr-xr-x	-	2022-11-15 19:03	删除
group	drwxr-xr-x	-	2022-11-15 19:03	删除
heading	drwxr-xr-x	-	2022-11-15 19:03	删除
home-link	drwxr-xr-x	-	2022-11-15 19:03	删除
html	drwxr-xr-x	-	2022-11-15 19:03	删除
image	drwxr-xr-x	-	2023-11-08 10:55	删除
latest-comments	drwxr-xr-x	-	2022-11-15 19:03	删除
latest-posts	drwxr-xr-x	-	2022-11-15 19:03	删除
legacy-widget	drwxr-xr-x	-	2022-11-15 19:03	删除
list	drwxr-xr-x	-	2022-11-15 19:03	删除
list-item	drwxr-xr-x	-	2022-11-15 19:03	删除
loginout	drwxr-xr-x	-	2024-11-13 13:00	删除
math	drwxr-xr-x	-	2025-12-04 05:41	删除
media-text	drwxr-xr-x	-	2026-05-01 01:56	删除
missing	drwxr-xr-x	-	2022-11-15 19:03	删除
more	drwxr-xr-x	-	2022-11-15 19:03	删除
navigation	drwxr-xr-x	-	2023-11-08 10:55	删除
navigation-link	drwxr-xr-x	-	2022-11-15 19:03	删除
navigation-submenu	drwxr-xr-x	-	2022-11-15 19:03	删除
nextpage	drwxr-xr-x	-	2022-11-15 19:03	删除
page-list	drwxr-xr-x	-	2022-11-15 19:03	删除
page-list-item	drwxr-xr-x	-	2023-03-30 09:26	删除
paragraph	drwxr-xr-x	-	2026-05-01 03:14	删除
pattern	drwxr-xr-x	-	2022-11-15 19:03	删除
post-author	drwxr-xr-x	-	2025-12-04 05:42	删除
post-author-biography	drwxr-xr-x	-	2024-11-13 13:00	删除
post-author-name	drwxr-xr-x	-	2024-11-13 13:00	删除
post-comments-count	drwxr-xr-x	-	2025-12-04 05:41	删除
post-comments-form	drwxr-xr-x	-	2022-11-15 19:03	删除
post-comments-link	drwxr-xr-x	-	2025-12-04 05:41	删除
post-content	drwxr-xr-x	-	2025-04-16 11:06	删除
post-date	drwxr-xr-x	-	2022-11-15 19:03	删除
post-excerpt	drwxr-xr-x	-	2022-11-15 19:03	删除
post-featured-image	drwxr-xr-x	-	2022-11-15 19:03	删除
post-navigation-link	drwxr-xr-x	-	2023-03-30 09:26	删除
post-template	drwxr-xr-x	-	2025-04-16 11:06	删除
post-terms	drwxr-xr-x	-	2022-11-15 19:03	删除
post-time-to-read	drwxr-xr-x	-	2025-12-04 05:41	删除
post-title	drwxr-xr-x	-	2022-11-15 19:03	删除
preformatted	drwxr-xr-x	-	2022-11-15 19:03	删除
pullquote	drwxr-xr-x	-	2022-11-15 19:03	删除
query	drwxr-xr-x	-	2024-04-03 10:16	删除
query-no-results	drwxr-xr-x	-	2022-11-15 19:03	删除
query-pagination	drwxr-xr-x	-	2022-11-15 19:03	删除
query-pagination-next	drwxr-xr-x	-	2022-11-15 19:03	删除
query-pagination-numbers	drwxr-xr-x	-	2022-11-15 19:03	删除
query-pagination-previous	drwxr-xr-x	-	2022-11-15 19:03	删除
query-title	drwxr-xr-x	-	2022-11-15 19:03	删除
query-total	drwxr-xr-x	-	2025-04-16 11:06	删除
quote	drwxr-xr-x	-	2022-11-15 19:03	删除
read-more	drwxr-xr-x	-	2022-11-15 19:03	删除
rss	drwxr-xr-x	-	2022-11-15 19:03	删除
search	drwxr-xr-x	-	2026-05-01 03:14	删除
separator	drwxr-xr-x	-	2022-11-15 19:03	删除
shortcode	drwxr-xr-x	-	2022-11-15 19:03	删除
site-logo	drwxr-xr-x	-	2022-11-15 19:03	删除
site-tagline	drwxr-xr-x	-	2024-11-13 13:00	删除
site-title	drwxr-xr-x	-	2023-03-30 09:26	删除
social-link	drwxr-xr-x	-	2026-05-01 02:12	删除
social-links	drwxr-xr-x	-	2026-05-01 02:25	删除
spacer	drwxr-xr-x	-	2022-11-15 19:03	删除
table	drwxr-xr-x	-	2022-11-15 19:03	删除
tag-cloud	drwxr-xr-x	-	2024-11-13 13:00	删除
template-part	drwxr-xr-x	-	2022-11-15 19:03	删除
term-count	drwxr-xr-x	-	2025-12-04 05:41	删除
term-description	drwxr-xr-x	-	2023-08-09 11:43	删除
term-name	drwxr-xr-x	-	2025-12-04 05:41	删除
term-template	drwxr-xr-x	-	2025-12-04 05:41	删除
terms-query	drwxr-xr-x	-	2025-12-04 05:41	删除
text-columns	drwxr-xr-x	-	2022-11-15 19:03	删除
verse	drwxr-xr-x	-	2022-11-15 19:03	删除
video	drwxr-xr-x	-	2022-11-15 19:03	删除
widget-group	drwxr-xr-x	-	2022-11-15 19:03	删除
accordion-item.php	-rw-r--r--	2.35 KB	2025-12-04 05:41	编辑下载删除
accordion.php	-rw-r--r--	1.12 KB	2025-12-04 05:41	编辑下载删除
archives.php	-rw-r--r--	4.31 KB	2025-12-04 05:41	编辑下载删除
blocks-json.php	-rw-r--r--	213.43 KB	2026-02-27 10:54	编辑下载删除
calendar.php	-rw-r--r--	5.93 KB	2024-07-17 11:51	编辑下载删除
categories.php	-rw-r--r--	4.54 KB	2025-12-04 05:41	编辑下载删除
comments-pagination-next.php	-rw-r--r--	1.88 KB	2024-11-13 13:00	编辑下载删除
comments-pagination-numbers.php	-rw-r--r--	1.59 KB	2024-07-17 11:51	编辑下载删除
comments-pagination.php	-rw-r--r--	1.23 KB	2025-12-04 05:41	编辑下载删除
comments-title.php	-rw-r--r--	2.71 KB	2024-07-17 11:51	编辑下载删除
cover.php	-rw-r--r--	3.1 KB	2025-04-16 11:06	编辑下载删除
error_log	-rw-r--r--	39.29 KB	2026-05-01 18:01	编辑下载删除
footnotes.php	-rw-r--r--	3.68 KB	2024-04-03 10:16	编辑下载删除
gallery.php	-rw-r--r--	6.29 KB	2025-12-04 05:41	编辑下载删除
heading.php	-rw-r--r--	1.27 KB	2024-07-17 11:51	编辑下载删除
latest-comments.php	-rw-r--r--	4.91 KB	2025-12-04 05:41	编辑下载删除
legacy-widget.php	-rw-r--r--	3.92 KB	2025-12-04 05:41	编辑下载删除
list.php	-rw-r--r--	1.24 KB	2024-07-17 11:51	编辑下载删除
loginout.php	-rw-r--r--	1.63 KB	2025-12-04 05:41	编辑下载删除
media-text.php	-rw-r--r--	4.28 KB	2024-11-13 13:00	编辑下载删除
page-list-item.php	-rw-r--r--	361 B	2024-07-17 11:51	编辑下载删除
page-list.php	-rw-r--r--	13.29 KB	2024-11-13 13:00	编辑下载删除
post-author-biography.php	-rw-r--r--	1.49 KB	2024-07-17 11:51	编辑下载删除
post-author-name.php	-rw-r--r--	1.91 KB	2025-05-01 11:02	编辑下载删除
post-author.php	-rw-r--r--	2.67 KB	2025-05-01 11:02	编辑下载删除
post-comments-form.php	-rw-r--r--	2.74 KB	2024-07-17 11:51	编辑下载删除
post-comments-link.php	-rw-r--r--	2.18 KB	2025-12-04 05:41	编辑下载删除
post-content.php	-rw-r--r--	2.29 KB	2025-12-04 05:41	编辑下载删除
post-excerpt.php	-rw-r--r--	3.53 KB	2025-12-04 05:41	编辑下载删除
post-featured-image.php	-rw-r--r--	9.14 KB	2025-12-04 05:41	编辑下载删除
post-navigation-link.php	-rw-r--r--	4.72 KB	2024-07-17 11:51	编辑下载删除
post-template.php	-rw-r--r--	5.61 KB	2024-07-17 11:51	编辑下载删除
post-terms.php	-rw-r--r--	3.55 KB	2025-04-16 11:06	编辑下载删除
post-time-to-read.php	-rw-r--r--	6.34 KB	2025-12-04 05:41	编辑下载删除
query-no-results.php	-rw-r--r--	1.8 KB	2024-07-17 11:51	编辑下载删除
query-pagination-next.php	-rw-r--r--	3.69 KB	2025-12-04 05:41	编辑下载删除
query-pagination-numbers.php	-rw-r--r--	4.66 KB	2024-07-17 11:51	编辑下载删除
query-pagination.php	-rw-r--r--	1.15 KB	2024-07-17 11:51	编辑下载删除
query-title.php	-rw-r--r--	2.87 KB	2025-12-04 05:41	编辑下载删除
query-total.php	-rw-r--r--	2.48 KB	2025-04-16 11:06	编辑下载删除
rss.php	-rw-r--r--	4.5 KB	2025-12-04 05:41	编辑下载删除
search.php	-rw-r--r--	23.26 KB	2025-12-04 05:41	编辑下载删除
site-tagline.php	-rw-r--r--	1.17 KB	2024-07-17 11:51	编辑下载删除
site-title.php	-rw-r--r--	1.82 KB	2025-12-04 05:41	编辑下载删除
social-link.php	-rw-r--r--	66.15 KB	2025-12-04 05:41	编辑下载删除
tag-cloud.php	-rw-r--r--	1.55 KB	2024-11-13 13:00	编辑下载删除
term-count.php	-rw-r--r--	1.8 KB	2025-12-04 05:41	编辑下载删除
term-description.php	-rw-r--r--	1.73 KB	2025-12-04 05:41	编辑下载删除
term-name.php	-rw-r--r--	2.02 KB	2025-12-04 05:41	编辑下载删除
term-template.php	-rw-r--r--	4.41 KB	2026-02-27 10:54	编辑下载删除
widget-group.php	-rw-r--r--	2.38 KB	2024-07-17 11:51	编辑下载删除