render_block_core_post_navigation_link() – Renders the `core/post-navigation-link` block on the server.

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Description

Renders the core/post-navigation-link block on the server.

Usage

$string = render_block_core_post_navigation_link( $attributes, $content );

Parameters

$attributes
( array ) required – Block attributes.
$content
( string ) required – Block default content.

Returns

string Returns the next or previous post link that is adjacent to the current post.

Source

File name: wordpress/wp-includes/blocks/post-navigation-link.php


Lines:

1 to 70 of 70
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  = '';

  // 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 = '<span class="post-navigation-link__label">' . wp_kses_post( $label ) . '</span> %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 = '<span class="post-navigation-link__label">' . wp_kses_post( $label ) . '</span> <span class="post-navigation-link__title">%title</span>';
      } 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' );
        $link  = sprintf(
          '<span class="post-navigation-link__label">%1$s</span> <span class="post-navigation-link__title">%2$s</span>',
          wp_kses_post( $label ),
          '%title'
        );
      }
    }
  }

  // The dynamic portion of the function name, `$navigation_type`,
  // refers to the type of adjacency, 'next' or 'previous'.
  $get_link_function = "get_{$navigation_type}_post_link";
  $content           = $get_link_function( $format, $link );
  return sprintf(
    '<div %1$s>%2$s</div>',
    $wrapper_attributes,
    $content
  );
}
 

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