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Added extra join with parent product to filter variable products from REST API

This commit is contained in:
Peter Fabian 2018-06-05 13:22:22 +02:00
parent c68b8faa99
commit 9ce165d75e
1 changed files with 73 additions and 0 deletions
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73
includes/api/class-wc-rest-product-variations-controller.php
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@ -244,6 +244,43 @@ class WC_REST_Product_Variations_Controller extends WC_REST_Products_Controller
return apply_filters( "woocommerce_rest_prepare_{$this->post_type}_object", $response, $object, $request );
}
/**
* Update JOIN part of WP_Query with parent table and taxonomies, if needed.
*
* @param string $join JOIN clause from WP_Query.
* @param WP_Query $wp_query WP_Query object.
*
* @return string
*/
public function parent_product_taxonomies_query_join( $join, $wp_query ) {
global $wpdb;
// TODO: add some more checks here, probably only run in case one of the following filters are active: category, prod type, visibility, tag, shipping class, attribute; post_type == product_variation.
if ( isset( $wp_query->query_vars['post_parent'] ) && isset( $wp_query->query_vars['post_type'] ) && 'product_variation' === $wp_query->query_vars['post_type'] ) {
$join .= " LEFT JOIN {$wpdb->posts} AS p_wc_variation_parent ON ({$wpdb->posts}.post_parent = p_wc_variation_parent.ID) ";
$join .= $this->clauses['join'];
}
return $join;
}
/**
* Update WHERE part of WP_Query to match parent product with taxonomies, if needed.
*
* @param string $where WHERE clause from WP_Query.
* @param WP_Query $wp_query WP_Query object.
*
* @return string
*/
public function parent_product_taxonomies_query_where( $where, $wp_query ) {
// TODO: add some more checks here, probably only run in case one of the following filters are active: category, prod type, visibility, tag, shipping class, attribute; post_type == product_variation.
if ( isset( $wp_query->query_vars['post_parent'] ) && isset( $wp_query->query_vars['post_type'] ) && 'product_variation' === $wp_query->query_vars['post_type'] ) {
$where .= $this->clauses['where'];
}
return $where;
}
/**
* Prepare objects query.
*
@ -255,6 +292,42 @@ class WC_REST_Product_Variations_Controller extends WC_REST_Products_Controller
$args = parent::prepare_objects_query( $request );
$args['post_parent'] = $request['product_id'];
// TODO: check if WC_Product_Data_Store_CPT::find_matching_product_variation could not be used...
// fix the filtering, otherwise taxonomy is not mapped correctly to variable product.
$taxonomies = $args['tax_query'];
// maybe do this only if there are taxonomies as categories etc, not attributes and terms?
$query_for_parent = new WP_Query( $args );
$query_for_parent->parse_tax_query( $query_for_parent->query_vars );
$this->clauses = $query_for_parent->tax_query->get_sql( 'p_wc_variation_parent', 'ID' );
// this does not work anyway as these are not assigned to variation.
unset( $args['tax_query'] );
// these properties should filter parent product:
// - product_type, _visibility_, cat, tag, shipping_class
// this will run a bit later.
add_filter( 'posts_where', array( $this, 'parent_product_taxonomies_query_where' ), 10, 2 );
add_filter( 'posts_join', array( $this, 'parent_product_taxonomies_query_join' ), 10, 2 );
// These properties needs to be transformed to meta query.
foreach ( $taxonomies as $taxonomy ) {
if ( in_array( $taxonomy['taxonomy'], array( 'product_type', 'product_visibility', 'product_cat', 'product_tag', 'product_shipping_class' ), true ) ) {
continue;
}
if ( 'term_id' === $taxonomy['field'] ) {
$terms = wc_get_product_terms( 10, $taxonomy['taxonomy'], array( 'fields' => 'slugs' ) );
$value = isset( $terms[ $taxonomy['terms'][0] ] ) ? $terms[ $taxonomy['terms'][0] ] : null;
} else {
$value = $taxonomy['terms'][0];
}
$args['meta_query'] = $this->add_meta_query( // WPCS: slow query ok.
$args, array(
'key' => 'attribute_' . $taxonomy['taxonomy'],
'value' => $value,
)
);
}
return $args;
}