gistfile1.php

<?php
/*
Plugin Name: WPEC Product Search History
Version: 1.0
Plugin URI: http://anthonycole.me/wp-search-history/
Description: Allows a user to see products that match results from their search history
Author: Anthony Cole
Author URI: http://anthonycole.me/

Copyright 2011  (email: [email protected] )

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

/* 
 * @function wpecsh_register_pt() 
 * @description Registers a Post Type for WordPress Search History
 * @package wpecsh
 * @since 1.0
*/

function wpecsh_register_pt() {
	$args = array(
		'public' => false,
	    'publicly_queryable' => true,
	    'show_in_menu' => false, 
	    'query_var' => false,
	    'rewrite' => false,
	    'capability_type' => 'post',
	    'has_archive' => false, 
	    'hierarchical' => false,
	    'supports' => array('author'),
	);
	register_post_type( 'wpecsh_log', $args );
}
add_action( 'init', 'wpecsh_register_pt' );

/* 
 * @function wpecsh_search_log
 * @description logs a users' search history
 * @package wpecsh
 * @since 1.0
*/

function wpecsh_search_log() {	
	if( is_user_logged_in() && is_search() ) {
		
		$user = wp_get_current_user();
		$args = array( 
			'post_author'      => $user->id, 
			'post_title'       => '',
			'post_content'     => get_query_var( 'wpsc_live_search' ),
			'post_type'        => 'wpecsh_log',
			'post_status'      => 'publish'
		);
		
		$post = wp_update_post( $args );
		
	} 
}
add_action( 'template_redirect', 'wpecsh_search_log' );

class WPECsh_Widget extends WP_Widget {

	function wpecsh_Widget() {
		$widget_ops = array( 'classname' => 'wpecsh_widget', 'description' => 'Displays a users\'s product search history' );
		$control_ops = array( 'width' => 200, 'height' => 250, 'id_base' => 'wpecsh' );
		$this->WP_Widget( 'wpecsh_widget', __('Product Search History'), $widget_ops, $control_ops );
	}

	function widget( $args, $instance ) {
			
			$user = wp_get_current_user( );
			
			$args = array(
				'post_type' => 'wpecsh_log',
				'post_author' => $user->id,
				'showposts' => 30
			);
			
			$results = get_posts( $args );
			
			if( 0 == count( $results ) ) {
				
				extract( $args );
				echo $before_widget;
				$title = apply_filters('widget_title', $instance['title'] );
				if ( $title ) 
					echo $before_title . $title . $after_title;
					
					
				foreach( $results as $search_result ) {
					$args = array(
						's' => $search_results->post_content,
						'post_type' => 'wpsc-product',
						'showposts' => 1,
					);
					$products = get_posts( $args );
							
					foreach( $product as $product ) {
					?>
						<li>
						<?php if ( has_post_thumbnail() )  : ?>
							<?php post_thumbnail() ?>
						<?php endif; ?>

						<a href="<?php echo get_permalink( $product->id ); ?>"><?php echo $product->post_title; ?></a>
						</li>

					<?php
					} // second foreach
		
				} // first foreach
				echo $after_widget;
			} // if more than 0 results
		
	}

	function update( $new_instance, $old_instance ) {
		$instance = $old_instance;
		foreach ( array('title', 'results_show') as $val ) {
			$instance[$val] = strip_tags( $new_instance[$val] );
		}
		return $instance;
	}

	function form( $instance ) {
		$defaults = array( 
			'title' 		=> 'Product Search History', 
			'results_show'  => 5,
		);
		$instance = wp_parse_args( (array) $instance, $defaults ); ?>
		<p>
			<label for="<?php echo $this->get_field_id( 'title' ); ?>"><?php _e("Title"); ?>:</label>
			<input type="text" class="widefat" id="<?php echo $this->get_field_id( 'title' ); ?>" name="<?php echo $this->get_field_name( 'title' ); ?>" value="<?php echo $instance['title']; ?>" style="width:100%;" />
		</p>
		<p>
			<label for="<?php echo $this->get_field_id( 'results_show' ); ?>"><?php _e("Number of results to show"); ?>:</label>
			<input type="text" id="<?php echo $this->get_field_id( 'results_show' ); ?>" name="<?php echo $this->get_field_name( 'results_show' ); ?>" value="<?php echo $instance['results_show']; ?>" size="5" />
		</p>
		<p><strong>Note:</strong> This widget will not display if there are no search history results for the user.</p>
	<?php 
	}
}

function _widget_func() {
	register_widget( 'wpecsh_Widget' );
}
add_action( 'widgets_init', '_widget_func' );

?>