'widget_products_on_sale',
'description' => __( 'Display a list of products currently onsale', 'jigoshop' )
);
// Create the widget
parent::__construct( 'products-onsale', __( 'Jigoshop: Products On-Sale', 'jigoshop' ), $options );
// Flush cache after every save
add_action( 'save_post', array( &$this, 'flush_widget_cache' ) );
add_action( 'deleted_post', array( &$this, 'flush_widget_cache' ) );
add_action( 'switch_theme', array( &$this, 'flush_widget_cache' ) );
}
/**
* Widget
*
* Display the widget in the sidebar
* Save output to the cache if empty
*
* @param array sidebar arguments
* @param array instance
*/
public function widget( $args, $instance ) {
// Get the most recent products from the cache
$cache = wp_cache_get( 'widget_recent_products', 'widget' );
// If no entry exists use array
if ( ! is_array($cache) ) {
$cache = array();
}
// If cached get from the cache
if ( isset($cache[$args['widget_id']]) ) {
echo $cache[$args['widget_id']];
return false;
}
// Start buffering
ob_start();
extract( $args );
// Set the widget title
$title = apply_filters(
'widget_title',
( $instance['title'] ) ? $instance['title'] : __( 'Special Offers', 'jigoshop' ),
$instance,
$this->id_base
);
// Set number of products to fetch
if( ! $number = absint( $instance['number'] ) ) {
$number = 5;
}
// Set up query
$query_args = array(
'posts_per_page' => -1,
'post_type' => 'product',
'post_status' => 'publish',
'orderby' => 'rand',
'meta_query' => array(
array(
'key' => 'visibility',
'value' => array( 'catalog', 'visible' ),
'compare' => 'IN',
),
)
);
$q = new WP_Query( $query_args );
// If there are products
if( $q->have_posts() ) {
// Print the widget wrapper & title
echo $before_widget;
echo $before_title . $title . $after_title;
// Open the list
echo '
';
// Print out each product
for($i = 0; $q->have_posts() && $i < $number;) : $q->the_post();
// Get new jigoshop_product instance
$_product = new jigoshop_product( get_the_ID() );
// Skip if not on sale
if( ! $_product->is_on_sale() ) continue; else $i++;
echo '
'; // Close the list
// Print closing widget wrapper
echo $after_widget;
// Reset the global $the_post as this query will have stomped on it
wp_reset_postdata();
}
ob_get_flush();
}
/**
* Update
*
* Handles the processing of information entered in the wordpress admin
* Flushes the cache & removes entry from options array
*
* @param array new instance
* @param array old instance
* @return array instance
*/
public function update( $new_instance, $old_instance ) {
$instance = $old_instance;
// Save the new values
$instance['title'] = strip_tags( $new_instance['title'] );
$instance['number'] = absint( $new_instance['number'] );
// Flush the cache
$this->flush_widget_cache();
// Remove the cache entry from the options array
$alloptions = wp_cache_get( 'alloptions', 'options' );
if ( isset( $alloptions['widget_recent_products'] ) ) {
delete_option( 'widget_recent_products' );
}
return $instance;
}
/**
* Flush Widget Cache
*
* Flushes the cached output
*/
public function flush_widget_cache() {
wp_cache_delete( 'widget_recent_products', 'widget' );
}
/**
* Form
*
* Displays the form for the wordpress admin
*
* @param array instance
*/
public function form( $instance ) {
// Get instance data
$title = isset( $instance['title'] ) ? esc_attr( $instance['title'] ) : null;
$number = isset( $instance['number'] ) ? absint( $instance['number'] ) : 5;
// Widget Title
echo "