woocommerce/classes/class-woocommerce-query.php

234 lines
7.2 KiB
PHP

<?php
/**
* Contains the query functions for WooCommerce which alter the front-end post queries and loops.
*
* @class Woocommerce_Query
* @package WooCommerce
* @category Class
* @author WooThemes
*/
class Woocommerce_Query {
var $unfiltered_product_ids = array(); // Unfiltered product ids (before layered nav etc)
var $filtered_product_ids = array(); // Filtered product ids (after layered nav)
var $post__in = array(); // Product id's that match the layered nav + price filter
var $meta_query = ''; // The meta query for the page
var $layered_nav_post__in = array(); // posts matching layered nav only
var $layered_nav_product_ids = array(); // Stores posts matching layered nav, so price filter can find max price in view
/** constructor */
function __construct() {
add_filter( 'pre_get_posts', array( &$this, 'pre_get_posts') );
add_filter( 'wp', array( &$this, 'remove_product_query') );
}
/**
* Hook into pre_get_posts to do the main product query
*/
function pre_get_posts( $q ) {
// Only apply to product categories, the product post archive, the shop page, and product tags
if (
( !is_main_query() ) || (
!$q->is_tax( 'product_cat' )
&& !$q->is_tax( 'product_tag' )
&& !$q->is_post_type_archive( 'product' )
)
)
return;
$this->product_query( $q );
// We're on a shop page so queue the woocommerce_get_products_in_view function
add_action('wp', array( &$this, 'get_products_in_view' ), 2);
// And remove the pre_get_posts hook
remove_filter( 'pre_get_posts', array( &$this, 'pre_get_posts') );
}
/**
* Query the products, applying sorting/ordering etc. This applies to the main wordpress loop
*/
function product_query( $q ) {
// Meta query
$meta_query = (array) $q->get( 'meta_query' );
$meta_query[] = $this->visibility_meta_query();
$meta_query[] = $this->stock_status_meta_query();
// Ordering
$ordering = $this->get_catalog_ordering_args();
// Get a list of post id's which match the current filters set (in the layered nav and price filter)
$post__in = array_unique(apply_filters('loop_shop_post_in', array()));
// Ordering query vars
$q->set( 'orderby', $ordering['orderby'] );
$q->set( 'order', $ordering['order'] );
if (isset($ordering['meta_key'])) $q->set( 'meta_key', $ordering['meta_key'] );
// Query vars that affect posts shown
if (!$q->is_tax( 'product_cat' ) && !$q->is_tax( 'product_tag' )) $q->set( 'post_type', 'product' );
$q->set( 'meta_query', $meta_query );
$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') ) );
// Store variables
$this->post__in = $post__in;
$this->meta_query = $meta_query;
}
/**
* Remove the query
*/
function remove_product_query() {
remove_filter( 'pre_get_posts', array( &$this, 'pre_get_posts') );
}
/**
* Get an unpaginated list all product ID's (both filtered and unfiltered). Makes use of transients.
*/
function get_products_in_view() {
global $wp_query;
$unfiltered_product_ids = array();
// Get WP Query for current page (without 'paged')
$current_wp_query = $wp_query->query;
unset($current_wp_query['paged']);
// Generate a transient name based on current query
$transient_name = 'woocommerce_unfiltered_product_ids_' . sanitize_key( http_build_query($current_wp_query) );
$transient_name = (is_search()) ? $transient_name . '_search' : $transient_name;
if ( false === ( $unfiltered_product_ids = get_transient( $transient_name ) ) ) {
// Get all visible posts, regardless of filters
$unfiltered_product_ids = get_posts(
array_merge(
$current_wp_query,
array(
'post_type' => 'product',
'numberposts' => -1,
'post_status' => 'publish',
'meta_query' => $this->meta_query,
'fields' => 'ids',
'no_found_rows' => true
)
)
);
set_transient( $transient_name, $unfiltered_product_ids );
}
// Store the variable
$this->unfiltered_product_ids = $unfiltered_product_ids;
// Also store filtered posts ids...
if (sizeof($this->post__in)>0) :
$this->filtered_product_ids = array_intersect($this->unfiltered_product_ids, $this->post__in);
else :
$this->filtered_product_ids = $this->unfiltered_product_ids;
endif;
// And filtered post ids which just take layered nav into consideration (to find max price in the price widget)
if (sizeof($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;
endif;
}
/**
* Returns an array of arguments for ordering products based on the selected values
*/
function get_catalog_ordering_args() {
$current_order = (isset($_SESSION['orderby'])) ? $_SESSION['orderby'] : apply_filters('woocommerce_default_catalog_orderby', 'title');
switch ($current_order) :
case 'date' :
$orderby = 'date';
$order = 'desc';
$meta_key = '';
break;
case 'price' :
$orderby = 'meta_value_num';
$order = 'asc';
$meta_key = '_price';
break;
default :
$orderby = 'title';
$order = 'asc';
$meta_key = '';
break;
endswitch;
$args = array();
$args['orderby'] = $orderby;
$args['order'] = $order;
if ($meta_key) $args['meta_key'] = $meta_key;
return apply_filters('woocommerce_get_catalog_ordering_args', $args);
}
/**
* Returns a meta query to handle product visibility
*/
function visibility_meta_query( $compare = 'IN' ) {
if ( is_search() ) $in = array( 'visible', 'search' ); else $in = array( 'visible', 'catalog' );
$meta_query = array(
'key' => '_visibility',
'value' => $in,
'compare' => $compare
);
return $meta_query;
}
/**
* Returns a meta query to handle product stock status
*/
function stock_status_meta_query( $status = 'instock' ) {
$meta_query = array();
if (get_option('woocommerce_hide_out_of_stock_items')=='yes') :
$meta_query = array(
'key' => '_stock_status',
'value' => $status,
'compare' => '='
);
endif;
return $meta_query;
}
/**
* Get a list of product id's which should be hidden from the frontend; useful for custom queries and loops. Makes use of transients.
*/
function get_hidden_product_ids() {
$transient_name = (is_search()) ? 'woocommerce_hidden_from_search_product_ids' : 'woocommerce_hidden_product_ids';
if ( false === ( $hidden_product_ids = get_transient( $transient_name ) ) ) {
$meta_query = array();
$meta_query[] = $this->visibility_meta_query( 'NOT IN' );
$meta_query[] = $this->stock_status_meta_query( 'outofstock' );
$hidden_product_ids = get_posts(array(
'post_type' => 'product',
'numberposts' => -1,
'post_status' => 'publish',
'meta_query' => $meta_query,
'fields' => 'ids',
'no_found_rows' => true
));
set_transient( $transient_name, $hidden_product_ids );
}
return (array) $hidden_product_ids;
}
}