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WordPress Recent Posts by Format Widget

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wp-recent-posts-by-format.php
PHP
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<?php
 
// relies on https://gist.github.com/1549613
 
class WP_Widget_Recent_Posts_By_Format extends WP_Widget {
 
function __construct() {
$widget_ops = array('classname' => 'widget_recent_entries_by_format', 'description' => __( "The most recent posts on your site by format") );
parent::__construct('recent-posts-by-format', __('Recent Posts by Format'), $widget_ops);
$this->alt_option_name = 'widget_recent_entries_by_format';
 
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_by_format', 'widget');
 
if ( !is_array($cache) )
$cache = array();
 
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 ( ! $number = absint( $instance['number'] ) )
$number = 10;
 
if (!($format = $instance['format'])) {
$format = 'post-format-standard';
}
$r = new WP_Query(array(
'posts_per_page' => $number,
'no_found_rows' => true,
'post_status' => 'publish',
'ignore_sticky_posts' => true,
'post_format' => $format,
));
if ($r->have_posts()) :
?>
<?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_by_format', $cache, 'widget');
}
 
function update( $new_instance, $old_instance ) {
$instance = $old_instance;
$instance['title'] = strip_tags($new_instance['title']);
$instance['number'] = (int) $new_instance['number'];
$instance['format'] = strip_tags($new_instance['format']);
$this->flush_widget_cache();
 
return $instance;
}
function post_formats() {
$post_formats = get_theme_support('post-formats');
array_unshift($post_formats[0], 'standard');
return $post_formats[0];
}
 
function flush_widget_cache() {
wp_cache_delete('widget_recent_posts_by_format', 'widget');
}
 
function form( $instance ) {
$title = isset($instance['title']) ? esc_attr($instance['title']) : '';
$number = isset($instance['number']) ? absint($instance['number']) : 5;
$post_format_options = array();
foreach ($this->post_formats() as $format) {
$post_format_options[] = ' <option value="post-format-'.$format.'" '.selected('post-format-'.$format, $instance['format'], false).'>'.ucwords($format).'</option>';
}
?>
<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('format'); ?>"><?php _e('Format:'); ?></label>
<select class="widefat" id="<?php echo $this->get_field_id('format'); ?>" name="<?php echo $this->get_field_name('format'); ?>">
<?php echo implode("\n", $post_format_options); ?>
</select>
 
<?php
}
}
add_action( 'widgets_init', create_function( '', "register_widget('WP_Widget_Recent_Posts_By_Format');" ) );

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