Bamboo Panda

✏️ Editing: 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 = $attributes['type'] ?? 'next';
	// Allow only `next` and `previous` in `$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' );

T	Name	Size
📁	..	-
📁	accordion	-
📁	accordion-heading	-
📁	accordion-item	-
📁	accordion-panel	-
📁	archives	-
📁	audio	-
📁	avatar	-
📁	block	-
📁	breadcrumbs	-
📁	button	-
📁	buttons	-
📁	calendar	-
📁	categories	-
📁	code	-
📁	column	-
📁	columns	-
📁	comment-author-name	-
📁	comment-content	-
📁	comment-date	-
📁	comment-edit-link	-
📁	comment-reply-link	-
📁	comment-template	-
📁	comments	-
📁	comments-pagination	-
📁	comments-pagination-next	-
📁	comments-pagination-numbers	-
📁	comments-pagination-previous	-
📁	comments-title	-
📁	cover	-
📁	details	-
📁	embed	-
📁	file	-
📁	footnotes	-
📁	freeform	-
📁	gallery	-
📁	group	-
📁	heading	-
📁	home-link	-
📁	html	-
📁	icon	-
📁	image	-
📁	latest-comments	-
📁	latest-posts	-
📁	legacy-widget	-
📁	list	-
📁	list-item	-
📁	loginout	-
📁	math	-
📁	media-text	-
📁	missing	-
📁	more	-
📁	navigation	-
📁	navigation-link	-
📁	navigation-overlay-close	-
📁	navigation-submenu	-
📁	nextpage	-
📁	page-list	-
📁	page-list-item	-
📁	paragraph	-
📁	pattern	-
📁	playlist	-
📁	playlist-track	-
📁	post-author	-
📁	post-author-biography	-
📁	post-author-name	-
📁	post-comments-count	-
📁	post-comments-form	-
📁	post-comments-link	-
📁	post-content	-
📁	post-date	-
📁	post-excerpt	-
📁	post-featured-image	-
📁	post-navigation-link	-
📁	post-template	-
📁	post-terms	-
📁	post-time-to-read	-
📁	post-title	-
📁	preformatted	-
📁	pullquote	-
📁	query	-
📁	query-no-results	-
📁	query-pagination	-
📁	query-pagination-next	-
📁	query-pagination-numbers	-
📁	query-pagination-previous	-
📁	query-title	-
📁	query-total	-
📁	quote	-
📁	read-more	-
📁	rss	-
📁	search	-
📁	separator	-
📁	shortcode	-
📁	site-logo	-
📁	site-tagline	-
📁	site-title	-
📁	social-link	-
📁	social-links	-
📁	spacer	-
📁	tab-list	-
📁	tab-panel	-
📁	tab-panels	-
📁	table	-
📁	tabs	-
📁	tag-cloud	-
📁	template-part	-
📁	term-count	-
📁	term-description	-
📁	term-name	-
📁	term-template	-
📁	terms-query	-
📁	text-columns	-
📁	verse	-
📁	video	-
📁	widget-group	-
📄	.blocks.php	0.00 B
📄	accordion-item.php	2.98 KB
📄	accordion.php	1.12 KB
📄	archives.php	4.28 KB
📄	avatar.php	5.51 KB
📄	block.php	3.05 KB
📄	blocks-json.php	205.72 KB
📄	breadcrumbs.php	18.61 KB
📄	button.php	4.11 KB
📄	calendar.php	5.93 KB
📄	categories.php	4.82 KB
📄	comment-author-name.php	2.09 KB
📄	comment-content.php	2.40 KB
📄	comment-date.php	1.82 KB
📄	comment-edit-link.php	1.67 KB
📄	comment-reply-link.php	2.03 KB
📄	comment-template.php	4.39 KB
📄	comments-pagination-next.php	1.88 KB
📄	comments-pagination-numbers.php	1.59 KB
📄	comments-pagination-previous.php	1.75 KB
📄	comments-pagination.php	1.23 KB
📄	comments-title.php	2.72 KB
📄	comments.php	6.63 KB
📄	cover.php	7.23 KB
📄	details.php	1.46 KB
📄	file.php	1.83 KB
📄	footnotes.php	3.73 KB
📄	gallery.php	21.82 KB
📄	heading.php	1.27 KB
📄	home-link.php	4.59 KB
📄	icon.php	4.27 KB
📄	image.php	17.23 KB
📄	index.php	4.98 KB
📄	latest-comments.php	5.49 KB
📄	latest-posts.php	10.21 KB
📄	legacy-widget.php	3.92 KB
📄	list.php	1.24 KB
📄	loginout.php	2.07 KB
📄	media-text.php	4.20 KB
📄	navigation-link.php	16.26 KB
📄	navigation-overlay-close.php	1.72 KB
📄	navigation-submenu.php	10.79 KB
📄	navigation.php	69.23 KB
📄	page-list-item.php	361.00 B
📄	page-list.php	13.54 KB
📄	paragraph.php	1.11 KB
📄	pattern.php	1.75 KB
📄	playlist-track.php	2.43 KB
📄	playlist.php	6.46 KB
📄	post-author-biography.php	1.49 KB
📄	post-author-name.php	1.92 KB
📄	post-author.php	2.67 KB
📄	post-comments-count.php	1.25 KB
📄	post-comments-form.php	2.74 KB
📄	post-comments-link.php	2.18 KB
📄	post-content.php	2.61 KB
📄	post-date.php	3.61 KB
📄	post-excerpt.php	4.21 KB
📄	post-featured-image.php	9.23 KB
📄	post-navigation-link.php	4.69 KB
📄	post-template.php	5.80 KB
📄	post-terms.php	3.55 KB
📄	post-time-to-read.php	6.26 KB
📄	post-title.php	2.09 KB
📄	query-no-results.php	1.80 KB
📄	query-pagination-next.php	3.59 KB
📄	query-pagination-numbers.php	4.59 KB
📄	query-pagination-previous.php	3.39 KB
📄	query-pagination.php	1.15 KB
📄	query-title.php	2.71 KB
📄	query-total.php	2.41 KB
📄	query.php	5.56 KB
📄	read-more.php	1.80 KB
📄	require-dynamic-blocks.php	5.13 KB
📄	require-static-blocks.php	535.00 B
📄	rss.php	4.50 KB
📄	search.php	25.00 KB
📄	shortcode.php	735.00 B
📄	site-logo.php	6.19 KB
📄	site-tagline.php	1.17 KB
📄	site-title.php	1.82 KB
📄	social-link.php	66.02 KB
📄	tab-list.php	2.27 KB
📄	tab-panel.php	1.63 KB
📄	tabs.php	3.86 KB
📄	tag-cloud.php	1.55 KB
📄	template-part.php	9.73 KB
📄	term-count.php	1.80 KB
📄	term-description.php	1.73 KB
📄	term-name.php	1.99 KB
📄	term-template.php	4.41 KB
📄	video.php	2.67 KB
📄	widget-group.php	2.38 KB