woocommerce/includes/class-wc-query.php

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<?php
/**
* Contains the query functions for WooCommerce which alter the front-end post queries and loops.
*
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* @class WC_Query
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* @version 1.6.4
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* @package WooCommerce/Classes
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* @category Class
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* @author WooThemes
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*/
if ( ! defined( 'ABSPATH' ) ) exit; // Exit if accessed directly
if ( ! class_exists( 'WC_Query' ) ) :
/**
* WC_Query Class
*/
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class WC_Query {
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/** @public array Query vars to add to wp */
public $query_vars = array(
// Checkout actions
'order-pay',
'order-received',
// My account actions
'view-order',
'edit-account',
'edit-address',
'lost-password'
);
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/** @public array Unfiltered product ids (before layered nav etc) */
public $unfiltered_product_ids = array();
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/** @public array Filtered product ids (after layered nav) */
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public $filtered_product_ids = array();
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/** @public array Product IDs that match the layered nav + price filter */
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public $post__in = array();
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/** @public array The meta query for the page */
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public $meta_query = '';
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/** @public array Post IDs matching layered nav only */
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public $layered_nav_post__in = array();
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/** @public array Stores post IDs matching layered nav, so price filter can find max price in view */
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public $layered_nav_product_ids = array();
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/**
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* Constructor for the query class. Hooks in methods.
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*
* @access public
* @return void
*/
public function __construct() {
add_action( 'init', array( $this, 'add_endpoints' ) );
if ( ! is_admin() ) {
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add_action( 'init', array( $this, 'get_errors' ) );
add_filter( 'query_vars', array( $this, 'add_query_vars'), 0 );
add_action( 'parse_request', array( $this, 'parse_request'), 0 );
add_filter( 'pre_get_posts', array( $this, 'pre_get_posts' ) );
add_filter( 'the_posts', array( $this, 'the_posts' ), 11, 2 );
add_filter( 'wp', array( $this, 'remove_product_query' ) );
}
}
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/**
* Get any errors from querystring
*/
public function get_errors() {
if ( isset( $_GET['wc_error'] ) )
wc_add_error( esc_attr( $_GET['wc_error'] ) );
}
/**
* Add endpoints for query vars
*/
public function add_endpoints() {
foreach ( $this->query_vars as $var )
add_rewrite_endpoint( $var, EP_PAGES );
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}
/**
* add_query_vars function.
*
* @access public
* @return void
*/
public function add_query_vars( $vars ) {
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foreach ( $this->query_vars as $var )
$vars[] = $var;
return $vars;
}
/**
* Parse the request and look for query vars - endpoints may not be supported
*/
public function parse_request() {
global $wp;
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foreach ( $this->query_vars as $var )
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if ( isset( $_GET[ $var ] ) )
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$wp->query_vars[ $var ] = $_GET[ $var ];
}
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/**
* Hook into pre_get_posts to do the main product query
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*
* @access public
* @param mixed $q query object
* @return void
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*/
public function pre_get_posts( $q ) {
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global $woocommerce;
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// We only want to affect the main query
if ( ! $q->is_main_query() )
return;
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// When orderby is set, WordPress shows posts. Get around that here.
if ( $q->is_home() && 'page' == get_option('show_on_front') && get_option('page_on_front') == woocommerce_get_page_id('shop') ) {
$_query = wp_parse_args( $q->query );
if ( empty( $_query ) || ! array_diff( array_keys( $_query ), array( 'preview', 'page', 'paged', 'cpage', 'orderby' ) ) ) {
$q->is_page = true;
$q->is_home = false;
$q->set( 'page_id', get_option('page_on_front') );
$q->set( 'post_type', 'product' );
}
}
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// Special check for shops with the product archive on front
if ( $q->is_page() && 'page' == get_option( 'show_on_front' ) && $q->get('page_id') == woocommerce_get_page_id('shop') ) {
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// This is a front-page shop
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$q->set( 'post_type', 'product' );
$q->set( 'page_id', '' );
if ( isset( $q->query['paged'] ) )
$q->set( 'paged', $q->query['paged'] );
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// Define a variable so we know this is the front page shop later on
define( 'SHOP_IS_ON_FRONT', true );
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// Get the actual WP page to avoid errors and let us use is_front_page()
// This is hacky but works. Awaiting http://core.trac.wordpress.org/ticket/21096
global $wp_post_types;
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$shop_page = get_post( woocommerce_get_page_id('shop') );
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$q->is_page = true;
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$wp_post_types['product']->ID = $shop_page->ID;
$wp_post_types['product']->post_title = $shop_page->post_title;
$wp_post_types['product']->post_name = $shop_page->post_name;
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// Fix conditional Functions like is_front_page
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$q->is_singular = false;
$q->is_post_type_archive = true;
$q->is_archive = true;
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// Fix WP SEO
if ( function_exists( 'wpseo_get_value' ) ) {
add_filter( 'wpseo_metadesc', array( $this, 'wpseo_metadesc' ) );
add_filter( 'wpseo_metakey', array( $this, 'wpseo_metakey' ) );
}
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} else {
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// Only apply to product categories, the product post archive, the shop page, product tags, and product attribute taxonomies
if ( ! $q->is_post_type_archive( 'product' ) && ! $q->is_tax( get_object_taxonomies( 'product' ) ) )
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return;
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}
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$this->product_query( $q );
if ( is_search() ) {
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add_filter( 'posts_where', array( $this, 'search_post_excerpt' ) );
add_filter( 'wp', array( $this, 'remove_posts_where' ) );
}
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// We're on a shop page so queue the woocommerce_get_products_in_view function
add_action( 'wp', array( $this, 'get_products_in_view' ), 2);
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// And remove the pre_get_posts hook
$this->remove_product_query();
}
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/**
* search_post_excerpt function.
*
* @access public
* @param string $where (default: '')
* @return string (modified where clause)
*/
public function search_post_excerpt( $where = '' ) {
global $wp_the_query;
// If this is not a WC Query, do not modify the query
if ( empty( $wp_the_query->query_vars['wc_query'] ) )
return $where;
$where = preg_replace(
"/post_title\s+LIKE\s*(\'[^\']+\')/",
"post_title LIKE $1) OR (post_excerpt LIKE $1", $where );
return $where;
}
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/**
* wpseo_metadesc function.
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*
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* @access public
* @param mixed $meta
* @return void
*/
public function wpseo_metadesc() {
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return wpseo_get_value( 'metadesc', woocommerce_get_page_id('shop') );
}
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/**
* wpseo_metakey function.
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*
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* @access public
* @return void
*/
public function wpseo_metakey() {
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return wpseo_get_value( 'metakey', woocommerce_get_page_id('shop') );
}
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/**
* Hook into the_posts to do the main product query if needed - relevanssi compatibility
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*
* @access public
* @param mixed $posts
* @param bool $query (default: false)
* @return void
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*/
public function the_posts( $posts, $query = false ) {
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global $woocommerce;
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// Abort if there's no query
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if ( ! $query )
return $posts;
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// Abort if we're not filtering posts
if ( empty( $this->post__in ) )
return $posts;
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// Abort if this query has already been done
if ( ! empty( $query->wc_query ) )
return $posts;
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// Abort if this isn't a search query
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if ( empty( $query->query_vars["s"] ) )
return $posts;
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// Abort if we're not on a post type archive/product taxonomy
if ( ! $query->is_post_type_archive( 'product' ) && ! $query->is_tax( get_object_taxonomies( 'product' ) ) )
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return $posts;
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$filtered_posts = array();
$queried_post_ids = array();
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foreach ( $posts as $post ) {
if ( in_array( $post->ID, $this->post__in ) ) {
$filtered_posts[] = $post;
$queried_post_ids[] = $post->ID;
}
}
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$query->posts = $filtered_posts;
$query->post_count = count( $filtered_posts );
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// Ensure filters are set
$this->unfiltered_product_ids = $queried_post_ids;
$this->filtered_product_ids = $queried_post_ids;
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if ( sizeof( $this->layered_nav_post__in ) > 0 ) {
$this->layered_nav_product_ids = array_intersect( $this->unfiltered_product_ids, $this->layered_nav_post__in );
} else {
$this->layered_nav_product_ids = $this->unfiltered_product_ids;
}
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return $filtered_posts;
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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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*
* @access public
* @param mixed $q
* @return void
*/
public function product_query( $q ) {
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// Meta query
$meta_query = $this->get_meta_query( $q->get( 'meta_query' ) );
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// Ordering
$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
$q->set( 'orderby', $ordering['orderby'] );
$q->set( 'order', $ordering['order'] );
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if ( isset( $ordering['meta_key'] ) )
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$q->set( 'meta_key', $ordering['meta_key'] );
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// Query vars that affect posts shown
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if ( ! $q->is_tax( 'product_cat' ) && ! $q->is_tax( 'product_tag' ) )
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$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 );
$q->set( 'posts_per_page', $q->get( 'posts_per_page' ) ? $q->get( 'posts_per_page' ) : apply_filters( 'loop_shop_per_page', get_option( 'posts_per_page' ) ) );
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// Set a special variable
$q->set( 'wc_query', true );
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// Store variables
$this->post__in = $post__in;
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$this->meta_query = $meta_query;
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do_action( 'woocommerce_product_query', $q, $this );
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}
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/**
* Remove the query
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*
* @access public
* @return void
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*/
public function remove_product_query() {
remove_filter( 'pre_get_posts', array( $this, 'pre_get_posts' ) );
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}
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/**
* Remove the posts_where filter
*
* @access public
* @return void
*/
public function remove_posts_where() {
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remove_filter( 'posts_where', array( $this, 'search_post_excerpt' ) );
}
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/**
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* Get an unpaginated list all product ID's (both filtered and unfiltered). Makes use of transients.
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*
* @access public
* @return void
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*/
public function get_products_in_view() {
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global $wp_the_query;
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$unfiltered_product_ids = array();
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// Get main query
$current_wp_query = $wp_the_query->query;
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// Get WP Query for current page (without 'paged')
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unset( $current_wp_query['paged'] );
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// Generate a transient name based on current query
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$transient_name = 'wc_uf_pid_' . md5( http_build_query( $current_wp_query ) );
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$transient_name = ( is_search() ) ? $transient_name . '_s' : $transient_name;
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if ( false === ( $unfiltered_product_ids = get_transient( $transient_name ) ) ) {
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// Get all visible posts, regardless of filters
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$unfiltered_product_ids = get_posts(
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array_merge(
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$current_wp_query,
array(
'post_type' => 'product',
'numberposts' => -1,
'post_status' => 'publish',
'meta_query' => $this->meta_query,
'fields' => 'ids',
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'no_found_rows' => true,
'update_post_meta_cache' => false,
'update_post_term_cache' => false
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)
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)
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);
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set_transient( $transient_name, $unfiltered_product_ids );
}
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// Store the variable
$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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// 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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/**
* Returns an array of arguments for ordering products based on the selected values
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*
* @access public
* @return array
*/
public function get_catalog_ordering_args( $orderby = '', $order = '' ) {
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global $woocommerce;
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// Get ordering from query string unless defined
if ( ! $orderby ) {
$orderby_value = isset( $_GET['orderby'] ) ? woocommerce_clean( $_GET['orderby'] ) : apply_filters( 'woocommerce_default_catalog_orderby', get_option( 'woocommerce_default_catalog_orderby' ) );
// Get order + orderby args from string
$orderby_value = explode( '-', $orderby_value );
$orderby = esc_attr( $orderby_value[0] );
$order = ! empty( $orderby_value[1] ) ? $orderby_value[1] : $order;
}
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$orderby = strtolower( $orderby );
$order = strtoupper( $order );
$args = array();
// default - menu_order
$args['orderby'] = 'menu_order title';
$args['order'] = $order == 'DESC' ? 'DESC' : 'ASC';
$args['meta_key'] = '';
switch ( $orderby ) {
case 'date' :
$args['orderby'] = 'date';
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$args['order'] = $order == 'ASC' ? 'ASC' : 'DESC';
break;
case 'price' :
$args['orderby'] = 'meta_value_num';
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$args['order'] = $order == 'DESC' ? 'DESC' : 'ASC';
$args['meta_key'] = '_price';
break;
case 'popularity' :
$args['meta_key'] = 'total_sales';
// Sorting handled later though a hook
add_filter( 'posts_clauses', array( $this, 'order_by_popularity_post_clauses' ) );
break;
case 'rating' :
// Sorting handled later though a hook
add_filter( 'posts_clauses', array( $this, 'order_by_rating_post_clauses' ) );
break;
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case 'title' :
$args['orderby'] = 'title';
$args['order'] = $order == 'DESC' ? 'DESC' : 'ASC';
break;
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}
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return apply_filters( 'woocommerce_get_catalog_ordering_args', $args );
}
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/**
* WP Core doens't let us change the sort direction for invidual orderby params - http://core.trac.wordpress.org/ticket/17065
*
* This lets us sort by meta value desc, and have a second orderby param.
*
* @access public
* @param array $args
* @return array
*/
public function order_by_popularity_post_clauses( $args ) {
global $wpdb;
$args['orderby'] = "$wpdb->postmeta.meta_value+0 DESC, $wpdb->posts.post_date DESC";
return $args;
}
/**
* order_by_rating_post_clauses function.
*
* @access public
* @param array $args
* @return array
*/
public function order_by_rating_post_clauses( $args ) {
global $wpdb;
$args['fields'] .= ", AVG( $wpdb->commentmeta.meta_value ) as average_rating ";
$args['where'] .= " AND ( $wpdb->commentmeta.meta_key = 'rating' OR $wpdb->commentmeta.meta_key IS null ) ";
$args['join'] .= "
LEFT OUTER JOIN $wpdb->comments ON($wpdb->posts.ID = $wpdb->comments.comment_post_ID)
LEFT JOIN $wpdb->commentmeta ON($wpdb->comments.comment_ID = $wpdb->commentmeta.comment_id)
";
$args['orderby'] = "average_rating DESC, $wpdb->posts.post_date DESC";
$args['groupby'] = "$wpdb->posts.ID";
return $args;
}
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/**
* Appends meta queries to an array.
*
* @access public
* @return void
*/
public function get_meta_query( $meta_query = array() ) {
if ( ! is_array( $meta_query ) )
$meta_query = array();
$meta_query[] = $this->visibility_meta_query();
$meta_query[] = $this->stock_status_meta_query();
return array_filter( $meta_query );
}
/**
* Returns a meta query to handle product visibility
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*
* @access public
* @param string $compare (default: 'IN')
* @return array
*/
public function visibility_meta_query( $compare = 'IN' ) {
if ( is_search() )
$in = array( 'visible', 'search' );
else
$in = array( 'visible', 'catalog' );
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$meta_query = array(
'key' => '_visibility',
'value' => $in,
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'compare' => $compare
);
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return $meta_query;
}
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/**
* Returns a meta query to handle product stock status
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*
* @access public
* @param string $status (default: 'instock')
* @return array
*/
public function stock_status_meta_query( $status = 'instock' ) {
$meta_query = array();
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if ( get_option( 'woocommerce_hide_out_of_stock_items' ) == 'yes' ) {
$meta_query = array(
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'key' => '_stock_status',
'value' => $status,
'compare' => '='
);
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}
return $meta_query;
}
}
endif;
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return new WC_Query();