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<?php
/**
* Server-side rendering of the `core/query-pagination-next` block.
*
* @package WordPress
*/
/**
* Renders the `core/query-pagination-next` block on the server.
*
* @since 5.8.0
*
* @global WP_Query $wp_query WordPress Query object.
*
* @param array $attributes Block attributes.
* @param string $content Block default content.
* @param WP_Block $block Block instance.
*
* @return string Returns the next posts link for the query pagination.
*/
function render_block_core_query_pagination_next( $attributes, $content, $block ) {
$page_key = isset( $block->context['queryId'] ) ? 'query-' . $block->context['queryId'] . '-page' : 'query-page';
$enhanced_pagination = isset( $block->context['enhancedPagination'] ) && $block->context['enhancedPagination'];
$page = empty( $_GET[ $page_key ] ) ? 1 : (int) $_GET[ $page_key ];
$max_page = isset( $block->context['query']['pages'] ) ? (int) $block->context['query']['pages'] : 0;
$wrapper_attributes = get_block_wrapper_attributes();
$show_label = isset( $block->context['showLabel'] ) ? (bool) $block->context['showLabel'] : true;
$default_label = __( 'Next Page' );
$label_text = isset( $attributes['label'] ) && ! empty( $attributes['label'] ) ? esc_html( $attributes['label'] ) : $default_label;
$label = $show_label ? $label_text : '';
$pagination_arrow = get_query_pagination_arrow( $block, true );
if ( ! $label ) {
$wrapper_attributes .= ' aria-label="' . $label_text . '"';
}
if ( $pagination_arrow ) {
$label .= $pagination_arrow;
}
$content = '';
// Check if the pagination is for Query that inherits the global context.
if ( isset( $block->context['query']['inherit'] ) && $block->context['query']['inherit'] ) {
$filter_link_attributes = static function () use ( $wrapper_attributes ) {
return $wrapper_attributes;
};
add_filter( 'next_posts_link_attributes', $filter_link_attributes );
// Take into account if we have set a bigger `max page`
// than what the query has.
global $wp_query;
if ( $max_page > $wp_query->max_num_pages ) {
$max_page = $wp_query->max_num_pages;
}
$content = get_next_posts_link( $label, $max_page );
remove_filter( 'next_posts_link_attributes', $filter_link_attributes );
} elseif ( ! $max_page || $max_page > $page ) {
$custom_query = new WP_Query( build_query_vars_from_query_block( $block, $page ) );
$custom_query_max_pages = (int) $custom_query->max_num_pages;
if ( $custom_query_max_pages && $custom_query_max_pages !== $page ) {
$content = sprintf(
'<a href="%1$s" %2$s>%3$s</a>',
esc_url( add_query_arg( $page_key, $page + 1 ) ),
$wrapper_attributes,
$label
);
}
wp_reset_postdata(); // Restore original Post Data.
}
if ( $enhanced_pagination && isset( $content ) ) {
$p = new WP_HTML_Tag_Processor( $content );
if ( $p->next_tag(
array(
'tag_name' => 'a',
'class_name' => 'wp-block-query-pagination-next',
)
) ) {
$p->set_attribute( 'data-wp-key', 'query-pagination-next' );
$p->set_attribute( 'data-wp-on--click', 'core/query::actions.navigate' );
$p->set_attribute( 'data-wp-on-async--mouseenter', 'core/query::actions.prefetch' );
$p->set_attribute( 'data-wp-watch', 'core/query::callbacks.prefetch' );
$content = $p->get_updated_html();
}
}
return $content;
}
/**
* Registers the `core/query-pagination-next` block on the server.
*
* @since 5.8.0
*/
function register_block_core_query_pagination_next() {
register_block_type_from_metadata(
__DIR__ . '/query-pagination-next',
array(
'render_callback' => 'render_block_core_query_pagination_next',
)
);
}
add_action( 'init', 'register_block_core_query_pagination_next' );
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