207 lines
6.0 KiB
PHP
207 lines
6.0 KiB
PHP
<?php
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/**
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* Contains the query functions for WooCommerce which alter the front-end post queries and loops.
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*
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* @class woocommerce
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* @package WooCommerce
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* @category Class
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* @author WooThemes
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*/
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class woocommerce_query {
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var $unfiltered_product_ids = array(); // Unfilted product ids (before layered nav etc)
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var $filtered_product_ids = array(); // Filted product ids (after layered nav)
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var $post__in = array(); // Product id's that match the layered nav + price filter
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var $meta_query = ''; // The meta query for the page
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var $layered_nav_post__in = array(); // posts matching layered nav only
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var $layered_nav_product_ids = array(); // Stores posts matching layered nav, so price filter can find max price in view
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/** constructor */
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function __construct() {
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add_filter( 'parse_query', array( &$this, 'parse_query') );
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add_action('wp', array( &$this, 'remove_parse_query') );
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}
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/**
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* Query the products, applying sorting/ordering etc. This applies to the main wordpress loop
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*/
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function parse_query( $q ) {
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if (is_admin()) return;
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// Only apply to product categories, the product post archive, the shop page, and product tags
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if (
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(
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isset( $q->query_vars['suppress_filters'] )
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&& true == $q->query_vars['suppress_filters']
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) || (
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!$q->is_tax( 'product_cat' )
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&& !$q->is_tax( 'product_tag' )
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&& !$q->is_post_type_archive( 'product' )
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// this rule should be covered by the above && !$q->is_page(get_option('woocommerce_shop_page_id'))
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)
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)
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return;
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// Meta query
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$meta_query = (array) $q->get( 'meta_query' );
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$meta_query[] = $this->visibility_meta_query();
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$meta_query[] = $this->stock_status_meta_query();
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// Ordering
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$ordering = $this->get_catalog_ordering_args();
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// Get a list of post id's which match the current filters set (in the layered nav and price filter)
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$post__in = array_unique(apply_filters('loop_shop_post_in', array()));
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// Ordering query vars
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$q->set( 'orderby', $ordering['orderby'] );
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$q->set( 'order', $ordering['order'] );
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if (isset($ordering['meta_key'])) $q->set( 'meta_key', $ordering['meta_key'] );
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// Query vars that affect posts shown
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$q->set( 'post_type', 'product' );
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$q->set( 'meta_query', $meta_query );
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$q->set( 'post__in', $post__in );
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$q->set( 'posts_per_page', apply_filters('loop_shop_per_page', get_option('posts_per_page')) );
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// Store variables
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$this->post__in = $post__in;
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$this->meta_query = $meta_query;
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// We're on a shop page so queue the woocommerce_get_products_in_view function
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add_action('wp', array( &$this, 'get_products_in_view' ), 2);
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}
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/**
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* Remove parse_query so it only applies to main loop
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*/
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function remove_parse_query() {
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remove_filter( 'parse_query', array( &$this, 'parse_query') );
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}
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/**
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* Get an unpaginated list all product ID's (both filtered and unfiltered)
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*/
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function get_products_in_view() {
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global $wp_query;
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$unfiltered_product_ids = array();
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// Get all visible posts, regardless of filters
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$unfiltered_product_ids = get_posts(
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array_merge(
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$wp_query->query,
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array(
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'post_type' => 'product',
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'numberposts' => -1,
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'post_status' => 'publish',
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'meta_query' => $this->meta_query,
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'fields' => 'ids'
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)
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)
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);
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// Store the variable
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$this->unfiltered_product_ids = $unfiltered_product_ids;
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// Also store filtered posts ids...
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if (sizeof($this->post__in)>0) :
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$this->filtered_product_ids = array_intersect($this->unfiltered_product_ids, $this->post__in);
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else :
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$this->filtered_product_ids = $this->unfiltered_product_ids;
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endif;
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// And filtered post ids which just take layered nav into consideration (to find max price in the price widget)
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if (sizeof($this->layered_nav_post__in)>0) :
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$this->layered_nav_product_ids = array_intersect($this->unfiltered_product_ids, $this->layered_nav_post__in);
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else :
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$this->layered_nav_product_ids = $this->unfiltered_product_ids;
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endif;
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}
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/**
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* Returns an array of arguments for ordering products based on the selected values
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*/
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function get_catalog_ordering_args() {
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$current_order = (isset($_SESSION['orderby'])) ? $_SESSION['orderby'] : 'title';
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switch ($current_order) :
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case 'date' :
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$orderby = 'date';
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$order = 'desc';
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$meta_key = '';
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break;
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case 'price' :
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$orderby = 'meta_value_num';
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$order = 'asc';
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$meta_key = 'price';
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break;
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default :
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$orderby = 'title';
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$order = 'asc';
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$meta_key = '';
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break;
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endswitch;
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$args = array();
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$args['orderby'] = $orderby;
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$args['order'] = $order;
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if ($meta_key) $args['meta_key'] = $meta_key;
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return $args;
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}
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/**
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* Returns a meta query to handle product visibility
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*/
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function visibility_meta_query( $compare = 'IN' ) {
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if ( is_search() ) $in = array( 'visible', 'search' ); else $in = array( 'visible', 'catalog' );
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$meta_query = array(
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'key' => 'visibility',
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'value' => $in,
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'compare' => $compare
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);
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return $meta_query;
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}
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/**
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* Returns a meta query to handle product stock status
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*/
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function stock_status_meta_query( $status = 'instock' ) {
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$meta_query = array();
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if (get_option('woocommerce_hide_out_of_stock_items')=='yes') :
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$meta_query = array(
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'key' => 'stock_status',
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'value' => $status,
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'compare' => '='
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);
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endif;
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return $meta_query;
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}
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/**
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* Get a list of product id's which should be hidden from the frontend; useful for custom queries and loops
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*/
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function get_hidden_product_ids() {
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$meta_query = array();
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$meta_query[] = $this->visibility_meta_query( 'NOT IN' );
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$meta_query[] = $this->stock_status_meta_query( 'outofstock' );
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$hidden_product_ids = get_posts(array(
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'post_type' => 'product',
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'numberposts' => -1,
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'post_status' => 'publish',
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'meta_query' => $meta_query,
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'fields' => 'ids'
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));
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return (array) $hidden_product_ids;
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}
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} |