'bistro_menu_a', 'description' => __( "Show menu items from a particular tag", "bistro") );
parent::__construct('menu-type-a', __( "Bistro: Menu Type A", "bistro"), $widget_ops);
$this->alt_option_name = 'widget_menu_a';
add_action( 'save_post', array($this, 'flush_widget_cache') );
add_action( 'deleted_post', array($this, 'flush_widget_cache') );
add_action( 'switch_theme', array($this, 'flush_widget_cache') );
}
public function widget($args, $instance) {
$cache = array();
if ( ! $this->is_preview() ) {
$cache = wp_cache_get( 'widget_menu_tags', '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();
$title = ( ! empty( $instance['title'] ) ) ? $instance['title'] : '';
$title = apply_filters( 'widget_title', $title, $instance, $this->id_base );
$number = ( ! empty( $instance['number'] ) ) ? absint( $instance['number'] ) : 4;
if ( ! $number )
$number = 4;
$tag = isset( $instance['tag'] ) ? esc_attr($instance['tag']) : '';
$price = isset( $instance['price'] ) ? esc_attr($instance['price']) : '';
$r = new WP_Query( array(
'posts_per_page' => $number,
'no_found_rows' => true,
'post_status' => 'publish',
'ignore_sticky_posts' => true,
'post_type' => 'restaurant_item',
'restaurant_tag' => $tag,
) );
if ($r->have_posts()) :
?>
have_posts() ) : $r->the_post(); ?>
is_preview() ) {
$cache[ $args['widget_id'] ] = ob_get_flush();
wp_cache_set( 'widget_menu_tags', $cache, 'widget' );
} else {
ob_end_flush();
}
}
public function update( $new_instance, $old_instance ) {
$instance = $old_instance;
$instance['title'] = strip_tags($new_instance['title']);
$instance['number'] = (int) $new_instance['number'];
$instance['tag'] = strip_tags($new_instance['tag']);
$instance['price'] = isset( $new_instance['price'] ) ? (bool) $new_instance['price'] : false;
$this->flush_widget_cache();
$alloptions = wp_cache_get( 'alloptions', 'options' );
if ( isset($alloptions['bistro_menu_tags']) )
delete_option('bistro_menu_tags');
return $instance;
}
public function flush_widget_cache() {
wp_cache_delete('widget_menu_tags', 'widget');
}
public function form( $instance ) {
$title = isset( $instance['title'] ) ? esc_attr( $instance['title'] ) : '';
$number = isset( $instance['number'] ) ? absint( $instance['number'] ) : 4;
$tag = isset( $instance['tag'] ) ? esc_attr( $instance['tag'] ) : '';
$price = isset( $instance['price'] ) ? esc_attr( $instance['price'] ) : '';
?>
id="get_field_id( 'price' ); ?>" name="get_field_name( 'price' ); ?>" />