1 <?php
  2 /**
  3  * Price Filter Widget and related functions
  4  *
  5  * Generates a range slider to filter products by price.
  6  *
  7  * @author      WooThemes
  8  * @category    Widgets
  9  * @package     WooCommerce/Widgets
 10  * @version     2.1.0
 11  * @extends     WC_Widget
 12  */
 13 
 14 if ( ! defined( 'ABSPATH' ) ) exit; // Exit if accessed directly
 15 
 16 class WC_Widget_Price_Filter extends WC_Widget {
 17 
 18     /**
 19      * Constructor
 20      */
 21     public function __construct() {
 22         $this->widget_cssclass    = 'woocommerce widget_price_filter';
 23         $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' );
 24         $this->widget_id          = 'woocommerce_price_filter';
 25         $this->widget_name        = __( 'WooCommerce Price Filter', 'woocommerce' );
 26         $this->settings           = array(
 27             'title'  => array(
 28                 'type'  => 'text',
 29                 'std'   => __( 'Filter by price', 'woocommerce' ),
 30                 'label' => __( 'Title', 'woocommerce' )
 31             )
 32         );
 33         parent::__construct();
 34     }
 35 
 36     /**
 37      * widget function.
 38      *
 39      * @see WP_Widget
 40      * @access public
 41      * @param array $args
 42      * @param array $instance
 43      * @return void
 44      */
 45     public function widget( $args, $instance ) {
 46         global $_chosen_attributes, $wpdb, $woocommerce, $wp_query, $wp;
 47 
 48         extract( $args );
 49 
 50         if ( ! is_post_type_archive( 'product' ) && ! is_tax( get_object_taxonomies( 'product' ) ) )
 51             return;
 52 
 53         if ( sizeof( WC()->query->unfiltered_product_ids ) == 0 )
 54             return; // None shown - return
 55 
 56         $min_price = isset( $_GET['min_price'] ) ? esc_attr( $_GET['min_price'] ) : '';
 57         $max_price = isset( $_GET['max_price'] ) ? esc_attr( $_GET['max_price'] ) : '';
 58 
 59         wp_enqueue_script( 'wc-price-slider' );
 60 
 61         $title  = apply_filters( 'widget_title', $instance['title'], $instance, $this->id_base );
 62 
 63         // Remember current filters/search
 64         $fields = '';
 65 
 66         if ( get_search_query() )
 67             $fields .= '<input type="hidden" name="s" value="' . get_search_query() . '" />';
 68 
 69         if ( ! empty( $_GET['post_type'] ) )
 70             $fields .= '<input type="hidden" name="post_type" value="' . esc_attr( $_GET['post_type'] ) . '" />';
 71 
 72         if ( ! empty ( $_GET['product_cat'] ) )
 73             $fields .= '<input type="hidden" name="product_cat" value="' . esc_attr( $_GET['product_cat'] ) . '" />';
 74 
 75         if ( ! empty( $_GET['product_tag'] ) )
 76             $fields .= '<input type="hidden" name="product_tag" value="' . esc_attr( $_GET['product_tag'] ) . '" />';
 77 
 78         if ( ! empty( $_GET['orderby'] ) )
 79             $fields .= '<input type="hidden" name="orderby" value="' . esc_attr( $_GET['orderby'] ) . '" />';
 80 
 81         if ( $_chosen_attributes ) foreach ( $_chosen_attributes as $attribute => $data ) {
 82 
 83             $taxonomy_filter = 'filter_' . str_replace( 'pa_', '', $attribute );
 84 
 85             $fields .= '<input type="hidden" name="' . esc_attr( $taxonomy_filter ) . '" value="' . esc_attr( implode( ',', $data['terms'] ) ) . '" />';
 86 
 87             if ( $data['query_type'] == 'or' )
 88                 $fields .= '<input type="hidden" name="' . esc_attr( str_replace( 'pa_', 'query_type_', $attribute ) ) . '" value="or" />';
 89         }
 90 
 91         $min = $max = 0;
 92         $post_min = $post_max = '';
 93 
 94         if ( sizeof( WC()->query->layered_nav_product_ids ) === 0 ) {
 95             $min = floor( $wpdb->get_var(
 96                 $wpdb->prepare('
 97                     SELECT min(meta_value + 0)
 98                     FROM %1$s
 99                     LEFT JOIN %2$s ON %1$s.ID = %2$s.post_id
100                     WHERE ( meta_key = \'%3$s\' OR meta_key = \'%4$s\' ) 
101                     AND meta_value != ""
102                 ', $wpdb->posts, $wpdb->postmeta, '_price', '_min_variation_price' )
103             ) );
104             $max = ceil( $wpdb->get_var(
105                 $wpdb->prepare('
106                     SELECT max(meta_value + 0)
107                     FROM %1$s
108                     LEFT JOIN %2$s ON %1$s.ID = %2$s.post_id
109                     WHERE meta_key = \'%3$s\'
110                 ', $wpdb->posts, $wpdb->postmeta, '_price' )
111             ) );
112         } else {
113             $min = floor( $wpdb->get_var(
114                 $wpdb->prepare('
115                     SELECT min(meta_value + 0)
116                     FROM %1$s
117                     LEFT JOIN %2$s ON %1$s.ID = %2$s.post_id
118                     WHERE ( meta_key =\'%3$s\' OR meta_key =\'%4$s\' ) 
119                     AND meta_value != ""
120                     AND (
121                         %1$s.ID IN (' . implode( ',', array_map( 'absint', WC()->query->layered_nav_product_ids ) ) . ')
122                         OR (
123                             %1$s.post_parent IN (' . implode( ',', array_map( 'absint', WC()->query->layered_nav_product_ids ) ) . ')
124                             AND %1$s.post_parent != 0
125                         )
126                     )
127                 ', $wpdb->posts, $wpdb->postmeta, '_price', '_min_variation_price'
128             ) ) );
129             $max = ceil( $wpdb->get_var(
130                 $wpdb->prepare('
131                     SELECT max(meta_value + 0)
132                     FROM %1$s
133                     LEFT JOIN %2$s ON %1$s.ID = %2$s.post_id
134                     WHERE meta_key =\'%3$s\'
135                     AND (
136                         %1$s.ID IN (' . implode( ',', array_map( 'absint', WC()->query->layered_nav_product_ids ) ) . ')
137                         OR (
138                             %1$s.post_parent IN (' . implode( ',', array_map( 'absint', WC()->query->layered_nav_product_ids ) ) . ')
139                             AND %1$s.post_parent != 0
140                         )
141                     )
142                 ', $wpdb->posts, $wpdb->postmeta, '_price'
143             ) ) );
144         }
145 
146         if ( $min == $max )
147             return;
148 
149         echo $before_widget . $before_title . $title . $after_title;
150 
151         if ( get_option( 'permalink_structure' ) == '' )
152             $form_action = remove_query_arg( array( 'page', 'paged' ), add_query_arg( $wp->query_string, '', home_url( $wp->request ) ) );
153         else
154             $form_action = preg_replace( '%\/page/[0-9]+%', '', home_url( $wp->request ) );
155 
156         echo '<form method="get" action="' . esc_attr( $form_action ) . '">
157             <div class="price_slider_wrapper">
158                 <div class="price_slider" style="display:none;"></div>
159                 <div class="price_slider_amount">
160                     <input type="text" id="min_price" name="min_price" value="' . esc_attr( $min_price ) . '" data-min="'.esc_attr( $min ).'" placeholder="'.__('Min price', 'woocommerce' ).'" />
161                     <input type="text" id="max_price" name="max_price" value="' . esc_attr( $max_price ) . '" data-max="'.esc_attr( $max ).'" placeholder="'.__( 'Max price', 'woocommerce' ).'" />
162                     <button type="submit" class="button">'.__( 'Filter', 'woocommerce' ).'</button>
163                     <div class="price_label" style="display:none;">
164                         '.__( 'Price:', 'woocommerce' ).' <span class="from"></span> &mdash; <span class="to"></span>
165                     </div>
166                     ' . $fields . '
167                     <div class="clear"></div>
168                 </div>
169             </div>
170         </form>';
171 
172         echo $after_widget;
173     }
174 }
175 
176 register_widget( 'WC_Widget_Price_Filter' );
WooCommerce API documentation generated by ApiGen 2.8.0