Popular Posts Widget

gistfile1.aw

<?php
/**
 * Popular Posts Widget
 *
 * Displays posts in last X days, sorted by most comments (proxy for popularity)
 *
 * @package      Core Functionality
 * @author       Bill Erickson <bill@billerickson.net>
 * @copyright    Copyright (c) 2011, Bill Erickson
 * @license      http://opensource.org/licenses/gpl-2.0.php GNU Public License
 */
 
/** Add our function to the widgets_init hook. **/
add_action( 'widgets_init', 'be_popular_load_widgets' );
function be_popular_load_widgets() {
	register_widget( 'BE_Popular_Widget' );
}

/** Define the Widget as an extension of WP_Widget **/
class BE_Popular_Widget extends WP_Widget {
	function BE_Popular_Widget() {
		/* Widget settings. */
		$widget_ops = array( 'classname' => 'widget_popular', 'description' => 'Displays most popular posts by comment count' );

		/* Widget control settings. */
		$control_ops = array( 'id_base' => 'popular-widget' );

		/* Create the widget. */
		$this->WP_Widget( 'popular-widget', 'Popular Posts', $widget_ops, $control_ops );
	}

	// Limit to last 30 days
	function filter_where( $where = '' ) {
		// posts in the last 30 days
		$where .= " AND post_date > '" . date('Y-m-d', strtotime('-' . $instance['days'] .' days')) . "'";
		return $where;
	}
	
	function widget( $args, $instance ) {
		extract( $args );
		
		echo $before_widget;
		
		if( !empty( $instance['title'] ) ) echo $before_title . $instance['title'] . $after_title;
		
		$loop_args = array(
			'posts_per_page' => (int) $instance['count'],
			'orderby' => 'comment_count'
		);
		
		if( 0 == $instance['days'] ) {
			$loop = new WP_Query( $loop_args );
		}else{
			add_filter( 'posts_where', array( $this, 'filter_where' ) );
			$loop = new WP_Query( $loop_args );
			remove_filter( 'posts_where', array( $this, 'filter_where' ) );
		}
		
		if( $loop->have_posts() ): while( $loop->have_posts() ): $loop->the_post(); global $post;
		
			if( 0 == $loop->current_post )
				echo '<p class="popular-post first">';
			else
				echo '<p class="popular-post">';
			echo '<a class="image" href="' . get_permalink() . '">' . genesis_get_image( array( 'size' => 'be_small' ) ) . '</a>';
			echo '<span class="date">' . get_the_date() . '</span>';
			echo '<a class="title" href="' . get_permalink() . '">' . get_the_title() . '</a>';
			echo '</p>';
		
		endwhile; endif; wp_reset_query();
		
		echo $after_widget;
	}

	function update( $new_instance, $old_instance ) {
		$instance = $old_instance;

		/* Strip tags (if needed) and update the widget settings. */
		$instance['title'] = esc_attr( $new_instance['title'] );
		$instance['count'] = (int) $new_instance['count'];
		$instance['days'] = (int) $new_instance['days'];
		return $instance;
	}

	function form( $instance ) {
		/* Set up some default widget settings. */
		$defaults = array( 'title' => '', 'count' => 5, 'days' => 30 );
		$instance = wp_parse_args( (array) $instance, $defaults ); ?>
		
		<p>
		<label for="<?php echo $this->get_field_id( 'title' ); ?>">Title:</label>
		<input id="<?php echo $this->get_field_id( 'title' ); ?>" name="<?php echo $this->get_field_name( 'title' ); ?>" value="<?php echo $instance['title']; ?>" />
		</p>

		<p>
		<label for="<?php echo $this->get_field_id( 'count' ); ?>">Number of Posts:</label>
		<input id="<?php echo $this->get_field_id( 'count' ); ?>" name="<?php echo $this->get_field_name( 'count' ); ?>" size="3" value="<?php echo $instance['count']; ?>" />
		</p>
		
		<p>
		<label for="<?php echo $this->get_field_id( 'days' ); ?>">Posted in the past X days:</label>
		<input id="<?php echo $this->get_field_id( 'days' ); ?>" name="<?php echo $this->get_field_name( 'days' ); ?>" size="3" value="<?php echo $instance['days']; ?>" />
		</p>
		<p class="description">Use 0 for no time limit.</p>
		<?php
	}

}