widget_cssclass = 'woocommerce widget_price_filter'; $this->widget_description = __( 'Shows a price filter slider in a widget which lets you narrow down the list of shown products when viewing product categories.', 'woocommerce' ); $this->widget_id = 'woocommerce_price_filter'; $this->widget_name = __( 'WooCommerce Price Filter', 'woocommerce' ); $this->settings = array( 'title' => array( 'type' => 'text', 'std' => __( 'Filter by price', 'woocommerce' ), 'label' => __( 'Title', 'woocommerce' ) ) ); $suffix = defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ? '' : '.min'; wp_register_script( 'wc-jquery-ui-touchpunch', WC()->plugin_url() . '/assets/js/jquery-ui-touch-punch/jquery-ui-touch-punch' . $suffix . '.js', array( 'jquery-ui-slider' ), WC_VERSION, true ); wp_register_script( 'wc-price-slider', WC()->plugin_url() . '/assets/js/frontend/price-slider' . $suffix . '.js', array( 'jquery-ui-slider', 'wc-jquery-ui-touchpunch' ), WC_VERSION, true ); wp_localize_script( 'wc-price-slider', 'woocommerce_price_slider_params', array( 'currency_symbol' => get_woocommerce_currency_symbol(), 'currency_pos' => get_option( 'woocommerce_currency_pos' ), 'min_price' => isset( $_GET['min_price'] ) ? esc_attr( $_GET['min_price'] ) : '', 'max_price' => isset( $_GET['max_price'] ) ? esc_attr( $_GET['max_price'] ) : '' ) ); parent::__construct(); } /** * Output widget. * * @see WP_Widget * * @param array $args * @param array $instance */ public function widget( $args, $instance ) { global $wp, $wp_the_query; if ( ! is_post_type_archive( 'product' ) && ! is_tax( get_object_taxonomies( 'product' ) ) ) { return; } if ( ! $wp_the_query->post_count ) { return; } $min_price = isset( $_GET['min_price'] ) ? esc_attr( $_GET['min_price'] ) : ''; $max_price = isset( $_GET['max_price'] ) ? esc_attr( $_GET['max_price'] ) : ''; wp_enqueue_script( 'wc-price-slider' ); // Find min and max price in current result set $prices = $this->get_filtered_price(); $min = floor( $prices->min_price ); $max = ceil( $prices->max_price ); if ( $min === $max ) { return; } $this->widget_start( $args, $instance ); if ( '' === get_option( 'permalink_structure' ) ) { $form_action = remove_query_arg( array( 'page', 'paged' ), add_query_arg( $wp->query_string, '', home_url( $wp->request ) ) ); } else { $form_action = preg_replace( '%\/page/[0-9]+%', '', home_url( trailingslashit( $wp->request ) ) ); } /** * Adjust max if the store taxes are not displayed how they are stored. * Min is left alone because the product may not be taxable. * Kicks in when prices excluding tax are displayed including tax. */ if ( wc_tax_enabled() && 'incl' === get_option( 'woocommerce_tax_display_shop' ) && ! wc_prices_include_tax() ) { $tax_classes = array_merge( array( '' ), WC_Tax::get_tax_classes() ); $class_max = $max; foreach ( $tax_classes as $tax_class ) { if ( $tax_rates = WC_Tax::get_rates( $tax_class ) ) { $class_max = $max + WC_Tax::get_tax_total( WC_Tax::calc_exclusive_tax( $max, $tax_rates ) ); } } $max = $class_max; } echo '
' . wc_query_string_form_fields( null, array( 'min_price', 'max_price' ), '', true ) . '
'; $this->widget_end( $args ); } /** * Get filtered min price for current products. * @return int */ protected function get_filtered_price() { global $wpdb, $wp_the_query; $args = $wp_the_query->query_vars; $tax_query = isset( $args['tax_query'] ) ? $args['tax_query'] : array(); $meta_query = isset( $args['meta_query'] ) ? $args['meta_query'] : array(); if ( ! empty( $args['taxonomy'] ) && ! empty( $args['term'] ) ) { $tax_query[] = array( 'taxonomy' => $args['taxonomy'], 'terms' => array( $args['term'] ), 'field' => 'slug', ); } foreach ( $meta_query as $key => $query ) { if ( ! empty( $query['price_filter'] ) || ! empty( $query['rating_filter'] ) ) { unset( $meta_query[ $key ] ); } } $meta_query = new WP_Meta_Query( $meta_query ); $tax_query = new WP_Tax_Query( $tax_query ); $meta_query_sql = $meta_query->get_sql( 'post', $wpdb->posts, 'ID' ); $tax_query_sql = $tax_query->get_sql( $wpdb->posts, 'ID' ); $sql = "SELECT min( CAST( price_meta.meta_value AS UNSIGNED ) ) as min_price, max( CAST( price_meta.meta_value AS UNSIGNED ) ) as max_price FROM {$wpdb->posts} "; $sql .= " LEFT JOIN {$wpdb->postmeta} as price_meta ON {$wpdb->posts}.ID = price_meta.post_id " . $tax_query_sql['join'] . $meta_query_sql['join']; $sql .= " WHERE {$wpdb->posts}.post_type = 'product' AND {$wpdb->posts}.post_status = 'publish' AND price_meta.meta_key IN ('" . implode( "','", array_map( 'esc_sql', apply_filters( 'woocommerce_price_filter_meta_keys', array( '_price' ) ) ) ) . "') AND price_meta.meta_value > '' "; $sql .= $tax_query_sql['where'] . $meta_query_sql['where']; return $wpdb->get_row( $sql ); } }