<?php
/**
* Price Filter Widget and related functions.
*
* Generates a range slider to filter products by price.
*
* @package WooCommerce/Widgets
* @version 2.3.0
*/
defined( 'ABSPATH' ) || exit;
/**
* Widget price filter class.
*/
class WC_Widget_Price_Filter extends WC_Widget {
/**
* Constructor.
*/
public function __construct() {
$this->widget_cssclass = 'woocommerce widget_price_filter';
$this->widget_description = __( 'Display a slider to filter products in your store by price.', 'woocommerce' );
$this->widget_id = 'woocommerce_price_filter';
$this->widget_name = __( 'Filter Products by Price', '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( 'accounting', WC()->plugin_url() . '/assets/js/accounting/accounting' . $suffix . '.js', array( 'jquery' ), '0.4.2' );
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' . $suffix . '.js', array( 'jquery-ui-slider', 'wc-jquery-ui-touchpunch', 'accounting' ), WC_VERSION, true );
wp_localize_script(
'wc-price-slider', 'woocommerce_price_slider_params', array(
'currency_format_num_decimals' => 0,
'currency_format_symbol' => get_woocommerce_currency_symbol(),
'currency_format_decimal_sep' => esc_attr( wc_get_price_decimal_separator() ),
'currency_format_thousand_sep' => esc_attr( wc_get_price_thousand_separator() ),
'currency_format' => esc_attr( str_replace( array( '%1$s', '%2$s' ), array( '%s', '%v' ), get_woocommerce_price_format() ) ),
)
);
if ( is_customize_preview() ) {
wp_enqueue_script( 'wc-price-slider' );
}
parent::__construct();
}
/**
* Output widget.
*
* @see WP_Widget
*
* @param array $args Arguments.
* @param array $instance Widget instance.
*/
public function widget( $args, $instance ) {
global $wp;
if ( ! is_shop() && ! is_product_taxonomy() ) {
return;
}
if ( ! wc()->query->get_main_query()->post_count ) {
return;
}
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', 'product-page' ), add_query_arg( $wp->query_string, '', home_url( $wp->request ) ) );
} else {
$form_action = preg_replace( '%\/page/[0-9]+%', '', home_url( trailingslashit( $wp->request ) ) );
}
$min_price = isset( $_GET['min_price'] ) ? wc_clean( wp_unslash( $_GET['min_price'] ) ) : apply_filters( 'woocommerce_price_filter_widget_min_amount', $min ); // WPCS: input var ok, CSRF ok.
$max_price = isset( $_GET['max_price'] ) ? wc_clean( wp_unslash( $_GET['max_price'] ) ) : apply_filters( 'woocommerce_price_filter_widget_max_amount', $max ); // WPCS: input var ok, CSRF ok.
echo '<form method="get" action="' . esc_url( $form_action ) . '">
<div class="price_slider_wrapper">
<div class="price_slider" style="display:none;"></div>
<div class="price_slider_amount">
<input type="text" id="min_price" name="min_price" value="' . esc_attr( $min_price ) . '" data-min="' . esc_attr( apply_filters( 'woocommerce_price_filter_widget_min_amount', $min ) ) . '" placeholder="' . esc_attr__( 'Min price', 'woocommerce' ) . '" />
<input type="text" id="max_price" name="max_price" value="' . esc_attr( $max_price ) . '" data-max="' . esc_attr( apply_filters( 'woocommerce_price_filter_widget_max_amount', $max ) ) . '" placeholder="' . esc_attr__( 'Max price', 'woocommerce' ) . '" />
<button type="submit" class="button">' . esc_html__( 'Filter', 'woocommerce' ) . '</button>
<div class="price_label" style="display:none;">
' . esc_html__( 'Price:', 'woocommerce' ) . ' <span class="from"></span> — <span class="to"></span>
</div>
' . wc_query_string_form_fields( null, array( 'min_price', 'max_price' ), '', true ) . '
<div class="clear"></div>
</div>
</div>
</form>'; // WPCS: XSS ok.
$this->widget_end( $args );
}
/**
* Get filtered min price for current products.
*
* @return int
*/
protected function get_filtered_price() {
global $wpdb;
$args = wc()->query->get_main_query()->query_vars;
$tax_query = isset( $args['tax_query'] ) ? $args['tax_query'] : array();
$meta_query = isset( $args['meta_query'] ) ? $args['meta_query'] : array();
if ( ! is_post_type_archive( 'product' ) && ! empty( $args['taxonomy'] ) && ! empty( $args['term'] ) ) {
$tax_query[] = array(
'taxonomy' => $args['taxonomy'],
'terms' => array( $args['term'] ),
'field' => 'slug',
);
}
foreach ( $meta_query + $tax_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' );
$sql = "SELECT min( FLOOR( price_meta.meta_value ) ) as min_price, max( CEILING( price_meta.meta_value ) ) as max_price FROM {$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 IN ('" . implode( "','", array_map( 'esc_sql', apply_filters( 'woocommerce_price_filter_post_type', array( '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'];
$search = WC_Query::get_main_search_query_sql();
if ( $search ) {
$sql .= ' AND ' . $search;
}
return $wpdb->get_row( $sql ); // WPCS: unprepared SQL ok.
}
}