/**
* Return a meta query for filtering by price.
* @return array
*/
private function price_filter_meta_query()
{
if (isset($_GET['max_price']) || isset($_GET['min_price'])) {
$meta_query = wc_get_min_max_price_meta_query($_GET);
$meta_query['price_filter'] = true;
return $meta_query;
}
return array();
}
/**
* Query args.
*
* @param array $args Request args.
* @param WP_REST_Request $request Request data.
* @return array
*/
public function query_args($args, $request)
{
// Set post_status.
$args['post_status'] = $request['status'];
// Taxonomy query to filter products by type, category,
// tag, shipping class, and attribute.
$tax_query = array();
// Map between taxonomy name and arg's key.
$taxonomies = array('product_cat' => 'category', 'product_tag' => 'tag', 'product_shipping_class' => 'shipping_class');
// Set tax_query for each passed arg.
foreach ($taxonomies as $taxonomy => $key) {
if (!empty($request[$key])) {
$tax_query[] = array('taxonomy' => $taxonomy, 'field' => 'term_id', 'terms' => $request[$key]);
}
}
// Filter product type by slug.
if (!empty($request['type'])) {
$tax_query[] = array('taxonomy' => 'product_type', 'field' => 'slug', 'terms' => $request['type']);
}
// Filter by attribute and term.
if (!empty($request['attribute']) && !empty($request['attribute_term'])) {
if (in_array($request['attribute'], wc_get_attribute_taxonomy_names(), true)) {
$tax_query[] = array('taxonomy' => $request['attribute'], 'field' => 'term_id', 'terms' => $request['attribute_term']);
}
}
if (!empty($tax_query)) {
$args['tax_query'] = $tax_query;
}
// Filter featured.
if (is_bool($request['featured'])) {
$args['tax_query'][] = array('taxonomy' => 'product_visibility', 'field' => 'name', 'terms' => 'featured');
}
// Filter by sku.
if (!empty($request['sku'])) {
$args['meta_query'] = $this->add_meta_query($args, array('key' => '_sku', 'value' => $request['sku']));
}
// Filter by tax class.
if (!empty($request['tax_class'])) {
$args['meta_query'] = $this->add_meta_query($args, array('key' => '_tax_class', 'value' => 'standard' !== $request['tax_class'] ? $request['tax_class'] : ''));
}
// Price filter.
if (!empty($request['min_price']) || !empty($request['max_price'])) {
$args['meta_query'] = $this->add_meta_query($args, wc_get_min_max_price_meta_query($request));
}
// Filter product in stock or out of stock.
if (is_bool($request['in_stock'])) {
$args['meta_query'] = $this->add_meta_query($args, array('key' => '_stock_status', 'value' => true === $request['in_stock'] ? 'instock' : 'outofstock'));
}
// Filter by on sale products.
if (is_bool($request['on_sale'])) {
$on_sale_key = $request['on_sale'] ? 'post__in' : 'post__not_in';
$args[$on_sale_key] += wc_get_product_ids_on_sale();
}
// Apply all WP_Query filters again.
if (is_array($request['filter'])) {
$args = array_merge($args, $request['filter']);
unset($args['filter']);
}
// Force the post_type argument, since it's not a user input variable.
if (!empty($request['sku'])) {
$args['post_type'] = array('product', 'product_variation');
} else {
$args['post_type'] = $this->post_type;
}
return $args;
}
/**
* Test wc_get_min_max_price_meta_query()
*
* @since 2.7.0
*/
public function test_wc_get_min_max_price_meta_query()
{
$meta_query = wc_get_min_max_price_meta_query(array('min_price' => 10, 'max_price' => 100));
$this->assertEquals(array('key' => '_price', 'value' => array(10, 100), 'compare' => 'BETWEEN', 'type' => 'DECIMAL'), $meta_query);
}
