Created
June 3, 2020 07:53
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wordpressの最近の投稿のリストから特定のカテゴリを非表示にする
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class WP_Widget_Recent_Posts_Exclude extends WP_Widget { | |
function __construct() { | |
$widget_ops = array('classname' => 'widget_recent_entries', 'description' => __( "The most recent posts on your site") ); | |
parent::__construct('recent-posts', __('Recent Posts with Exclude'), $widget_ops); | |
$this->alt_option_name = 'widget_recent_entries'; | |
add_action( 'save_post', array(&$this, 'flush_widget_cache') ); | |
add_action( 'deleted_post', array(&$this, 'flush_widget_cache') ); | |
add_action( 'switch_theme', array(&$this, 'flush_widget_cache') ); | |
} | |
function widget($args, $instance) { | |
$cache = wp_cache_get('widget_recent_posts', 'widget'); | |
if ( !is_array($cache) ) | |
$cache = array(); | |
if ( ! isset( $args['widget_id'] ) ) | |
$args['widget_id'] = $this->id; | |
if ( isset( $cache[ $args['widget_id'] ] ) ) { | |
echo $cache[ $args['widget_id'] ]; | |
return; | |
} | |
ob_start(); | |
extract($args); | |
$title = apply_filters('widget_title', empty($instance['title']) ? __('Recent Posts') : $instance['title'], $instance, $this->id_base); | |
if ( empty( $instance['number'] ) || ! $number = absint( $instance['number'] ) ) | |
$number = 10; | |
$exclude = empty( $instance['exclude'] ) ? '' : $instance['exclude']; | |
$r = new WP_Query(array('posts_per_page' => $number, 'no_found_rows' => true, 'post_status' => 'publish', 'ignore_sticky_posts' => true, 'category__not_in' => explode(',', $exclude) )); | |
if ($r->have_posts()) : | |
?> | |
<?php //echo print_r(explode(',', $exclude)); ?> | |
<?php echo $before_widget; ?> | |
<?php if ( $title ) echo $before_title . $title . $after_title; ?> | |
<ul> | |
<?php while ($r->have_posts()) : $r->the_post(); ?> | |
<li><a href="<?php the_permalink() ?>" title="<?php echo esc_attr(get_the_title() ? get_the_title() : get_the_ID()); ?>"><?php if ( get_the_title() ) the_title(); else the_ID(); ?></a></li> | |
<?php endwhile; ?> | |
</ul> | |
<?php echo $after_widget; ?> | |
<?php | |
// Reset the global $the_post as this query will have stomped on it | |
wp_reset_postdata(); | |
endif; | |
$cache[$args['widget_id']] = ob_get_flush(); | |
wp_cache_set('widget_recent_posts', $cache, 'widget'); | |
} | |
function update( $new_instance, $old_instance ) { | |
$instance = $old_instance; | |
$instance['title'] = strip_tags($new_instance['title']); | |
$instance['number'] = (int) $new_instance['number']; | |
$instance['exclude'] = strip_tags( $new_instance['exclude'] ); | |
$this->flush_widget_cache(); | |
$alloptions = wp_cache_get( 'alloptions', 'options' ); | |
if ( isset($alloptions['widget_recent_entries']) ) | |
delete_option('widget_recent_entries'); | |
return $instance; | |
} | |
function flush_widget_cache() { | |
wp_cache_delete('widget_recent_posts', 'widget'); | |
} | |
function form( $instance ) { | |
$title = isset($instance['title']) ? esc_attr($instance['title']) : ''; | |
$number = isset($instance['number']) ? absint($instance['number']) : 5; | |
$exclude = esc_attr( $instance['exclude'] ); | |
?> | |
<p><label for="<?php echo $this->get_field_id('title'); ?>"><?php _e('Title:'); ?></label> | |
<input class="widefat" id="<?php echo $this->get_field_id('title'); ?>" name="<?php echo $this->get_field_name('title'); ?>" type="text" value="<?php echo $title; ?>" /></p> | |
<p><label for="<?php echo $this->get_field_id('number'); ?>"><?php _e('Number of posts to show:'); ?></label> | |
<input id="<?php echo $this->get_field_id('number'); ?>" name="<?php echo $this->get_field_name('number'); ?>" type="text" value="<?php echo $number; ?>" size="3" /></p> | |
<p> | |
<label for="<?php echo $this->get_field_id('exclude'); ?>"><?php _e( 'Exclude Category(s):' ); ?></label> <input type="text" value="<?php echo $exclude; ?>" name="<?php echo $this->get_field_name('exclude'); ?>" id="<?php echo $this->get_field_id('exclude'); ?>" class="widefat" /> | |
<br /> | |
<small><?php _e( 'Category IDs, separated by commas.' ); ?></small> | |
</p> | |
<?php | |
} | |
} | |
function WP_Widget_Recent_Posts_Exclude_init() { | |
unregister_widget('WP_Widget_Recent_Posts'); | |
register_widget('WP_Widget_Recent_Posts_Exclude'); | |
} | |
add_action('widgets_init', 'WP_Widget_Recent_Posts_Exclude_init'); |
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