158 lines
4.5 KiB
PHP
158 lines
4.5 KiB
PHP
<?php
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/**
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* Server-side rendering of the `core/calendar` block.
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*
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* @package WordPress
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*/
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/**
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* Renders the `core/calendar` block on server.
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*
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* @param array $attributes The block attributes.
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*
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* @return string Returns the block content.
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*/
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function render_block_core_calendar( $attributes ) {
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global $monthnum, $year;
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// Calendar shouldn't be rendered
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// when there are no published posts on the site.
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if ( ! block_core_calendar_has_published_posts() ) {
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if ( is_user_logged_in() ) {
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return '<div>' . __( 'The calendar block is hidden because there are no published posts.' ) . '</div>';
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}
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return '';
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}
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$previous_monthnum = $monthnum;
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$previous_year = $year;
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if ( isset( $attributes['month'] ) && isset( $attributes['year'] ) ) {
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$permalink_structure = get_option( 'permalink_structure' );
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if (
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strpos( $permalink_structure, '%monthnum%' ) !== false &&
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strpos( $permalink_structure, '%year%' ) !== false
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) {
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// phpcs:ignore WordPress.WP.GlobalVariablesOverride.OverrideProhibited
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$monthnum = $attributes['month'];
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// phpcs:ignore WordPress.WP.GlobalVariablesOverride.OverrideProhibited
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$year = $attributes['year'];
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}
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}
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$wrapper_attributes = get_block_wrapper_attributes();
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$output = sprintf(
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'<div %1$s>%2$s</div>',
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$wrapper_attributes,
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get_calendar( true, false )
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);
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// phpcs:ignore WordPress.WP.GlobalVariablesOverride.OverrideProhibited
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$monthnum = $previous_monthnum;
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// phpcs:ignore WordPress.WP.GlobalVariablesOverride.OverrideProhibited
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$year = $previous_year;
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return $output;
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}
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/**
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* Registers the `core/calendar` block on server.
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*/
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function register_block_core_calendar() {
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register_block_type_from_metadata(
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__DIR__ . '/calendar',
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array(
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'render_callback' => 'render_block_core_calendar',
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)
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);
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}
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add_action( 'init', 'register_block_core_calendar' );
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/**
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* Returns whether or not there are any published posts.
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*
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* Used to hide the calendar block when there are no published posts.
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* This compensates for a known Core bug: https://core.trac.wordpress.org/ticket/12016
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*
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* @return bool Has any published posts or not.
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*/
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function block_core_calendar_has_published_posts() {
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// Multisite already has an option that stores the count of the published posts.
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// Let's use that for multisites.
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if ( is_multisite() ) {
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return 0 < (int) get_option( 'post_count' );
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}
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// On single sites we try our own cached option first.
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$has_published_posts = get_option( 'gutenberg_calendar_block_has_published_posts', null );
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if ( null !== $has_published_posts ) {
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return (bool) $has_published_posts;
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}
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// No cache hit, let's update the cache and return the cached value.
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return block_core_calendar_update_has_published_posts();
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}
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/**
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* Queries the database for any published post and saves
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* a flag whether any published post exists or not.
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*
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* @return bool Has any published posts or not.
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*/
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function block_core_calendar_update_has_published_posts() {
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global $wpdb;
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$has_published_posts = (bool) $wpdb->get_var( "SELECT 1 as test FROM {$wpdb->posts} WHERE post_type = 'post' AND post_status = 'publish' LIMIT 1" );
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update_option( 'gutenberg_calendar_block_has_published_posts', $has_published_posts );
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return $has_published_posts;
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}
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/**
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* Handler for updating the has published posts flag when a post is deleted.
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*
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* @param int $post_id Deleted post ID.
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*/
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function block_core_calendar_update_has_published_post_on_delete( $post_id ) {
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if ( is_multisite() ) {
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return;
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}
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$post = get_post( $post_id );
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if ( ! $post || 'publish' !== $post->post_status || 'post' !== $post->post_type ) {
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return;
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}
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block_core_calendar_update_has_published_posts();
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}
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/**
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* Handler for updating the has published posts flag when a post status changes.
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*
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* @param string $new_status The status the post is changing to.
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* @param string $old_status The status the post is changing from.
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* @param WP_Post $post Post object.
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*/
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function block_core_calendar_update_has_published_post_on_transition_post_status( $new_status, $old_status, $post ) {
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if ( is_multisite() ) {
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return;
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}
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if ( $new_status === $old_status ) {
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return;
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}
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if ( 'post' !== get_post_type( $post ) ) {
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return;
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}
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if ( 'publish' !== $new_status && 'publish' !== $old_status ) {
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return;
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}
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block_core_calendar_update_has_published_posts();
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}
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add_action( 'delete_post', 'block_core_calendar_update_has_published_post_on_delete' );
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add_action( 'transition_post_status', 'block_core_calendar_update_has_published_post_on_transition_post_status', 10, 3 );
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