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0860bb2771
Prior to about 2013, many class methods lacked even access modifiers which made the `@access` notations that much more useful. Now that we've gotten to a point where the codebase is more mature from a maintenance perspective and we can finally remove these notations. Notable exceptions to this change include standalone functions notated as private as well as some classes still considered to represent "private" APIs. See #41452. Built from https://develop.svn.wordpress.org/trunk@41162 git-svn-id: http://core.svn.wordpress.org/trunk@41002 1a063a9b-81f0-0310-95a4-ce76da25c4cd
551 lines
16 KiB
PHP
551 lines
16 KiB
PHP
<?php
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/**
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* Network API: WP_Network_Query class
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*
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* @package WordPress
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* @subpackage Multisite
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* @since 4.6.0
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*/
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/**
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* Core class used for querying networks.
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*
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* @since 4.6.0
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*
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* @see WP_Network_Query::__construct() for accepted arguments.
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*/
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class WP_Network_Query {
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/**
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* SQL for database query.
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*
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* @since 4.6.0
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* @var string
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*/
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public $request;
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/**
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* SQL query clauses.
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*
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* @since 4.6.0
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* @var array
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*/
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protected $sql_clauses = array(
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'select' => '',
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'from' => '',
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'where' => array(),
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'groupby' => '',
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'orderby' => '',
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'limits' => '',
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);
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/**
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* Query vars set by the user.
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*
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* @since 4.6.0
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* @var array
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*/
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public $query_vars;
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/**
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* Default values for query vars.
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*
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* @since 4.6.0
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* @var array
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*/
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public $query_var_defaults;
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/**
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* List of networks located by the query.
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*
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* @since 4.6.0
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* @var array
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*/
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public $networks;
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/**
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* The amount of found networks for the current query.
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*
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* @since 4.6.0
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* @var int
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*/
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public $found_networks = 0;
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/**
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* The number of pages.
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*
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* @since 4.6.0
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* @var int
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*/
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public $max_num_pages = 0;
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/**
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* Constructor.
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*
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* Sets up the network query, based on the query vars passed.
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*
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* @since 4.6.0
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*
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* @param string|array $query {
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* Optional. Array or query string of network query parameters. Default empty.
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*
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* @type array $network__in Array of network IDs to include. Default empty.
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* @type array $network__not_in Array of network IDs to exclude. Default empty.
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* @type bool $count Whether to return a network count (true) or array of network objects.
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* Default false.
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* @type string $fields Network fields to return. Accepts 'ids' (returns an array of network IDs)
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* or empty (returns an array of complete network objects). Default empty.
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* @type int $number Maximum number of networks to retrieve. Default empty (no limit).
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* @type int $offset Number of networks to offset the query. Used to build LIMIT clause.
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* Default 0.
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* @type bool $no_found_rows Whether to disable the `SQL_CALC_FOUND_ROWS` query. Default true.
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* @type string|array $orderby Network status or array of statuses. Accepts 'id', 'domain', 'path',
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* 'domain_length', 'path_length' and 'network__in'. Also accepts false,
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* an empty array, or 'none' to disable `ORDER BY` clause. Default 'id'.
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* @type string $order How to order retrieved networks. Accepts 'ASC', 'DESC'. Default 'ASC'.
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* @type string $domain Limit results to those affiliated with a given domain. Default empty.
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* @type array $domain__in Array of domains to include affiliated networks for. Default empty.
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* @type array $domain__not_in Array of domains to exclude affiliated networks for. Default empty.
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* @type string $path Limit results to those affiliated with a given path. Default empty.
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* @type array $path__in Array of paths to include affiliated networks for. Default empty.
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* @type array $path__not_in Array of paths to exclude affiliated networks for. Default empty.
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* @type string $search Search term(s) to retrieve matching networks for. Default empty.
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* @type bool $update_network_cache Whether to prime the cache for found networks. Default true.
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* }
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*/
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public function __construct( $query = '' ) {
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$this->query_var_defaults = array(
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'network__in' => '',
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'network__not_in' => '',
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'count' => false,
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'fields' => '',
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'number' => '',
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'offset' => '',
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'no_found_rows' => true,
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'orderby' => 'id',
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'order' => 'ASC',
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'domain' => '',
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'domain__in' => '',
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'domain__not_in' => '',
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'path' => '',
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'path__in' => '',
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'path__not_in' => '',
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'search' => '',
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'update_network_cache' => true,
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);
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if ( ! empty( $query ) ) {
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$this->query( $query );
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}
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}
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/**
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* Parses arguments passed to the network query with default query parameters.
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*
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* @since 4.6.0
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*
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*
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* @param string|array $query WP_Network_Query arguments. See WP_Network_Query::__construct()
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*/
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public function parse_query( $query = '' ) {
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if ( empty( $query ) ) {
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$query = $this->query_vars;
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}
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$this->query_vars = wp_parse_args( $query, $this->query_var_defaults );
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/**
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* Fires after the network query vars have been parsed.
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*
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* @since 4.6.0
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*
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* @param WP_Network_Query &$this The WP_Network_Query instance (passed by reference).
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*/
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do_action_ref_array( 'parse_network_query', array( &$this ) );
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}
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/**
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* Sets up the WordPress query for retrieving networks.
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*
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* @since 4.6.0
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*
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* @param string|array $query Array or URL query string of parameters.
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* @return array|int List of networks, or number of networks when 'count' is passed as a query var.
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*/
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public function query( $query ) {
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$this->query_vars = wp_parse_args( $query );
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return $this->get_networks();
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}
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/**
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* Gets a list of networks matching the query vars.
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*
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* @since 4.6.0
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*
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* @return int|array The list of networks.
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*/
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public function get_networks() {
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$this->parse_query();
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/**
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* Fires before networks are retrieved.
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*
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* @since 4.6.0
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*
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* @param WP_Network_Query &$this Current instance of WP_Network_Query, passed by reference.
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*/
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do_action_ref_array( 'pre_get_networks', array( &$this ) );
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// $args can include anything. Only use the args defined in the query_var_defaults to compute the key.
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$_args = wp_array_slice_assoc( $this->query_vars, array_keys( $this->query_var_defaults ) );
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// Ignore the $fields argument as the queried result will be the same regardless.
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unset( $_args['fields'] );
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$key = md5( serialize( $_args ) );
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$last_changed = wp_cache_get_last_changed( 'networks' );
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$cache_key = "get_network_ids:$key:$last_changed";
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$cache_value = wp_cache_get( $cache_key, 'networks' );
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if ( false === $cache_value ) {
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$network_ids = $this->get_network_ids();
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if ( $network_ids ) {
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$this->set_found_networks();
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}
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$cache_value = array(
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'network_ids' => $network_ids,
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'found_networks' => $this->found_networks,
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);
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wp_cache_add( $cache_key, $cache_value, 'networks' );
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} else {
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$network_ids = $cache_value['network_ids'];
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$this->found_networks = $cache_value['found_networks'];
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}
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if ( $this->found_networks && $this->query_vars['number'] ) {
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$this->max_num_pages = ceil( $this->found_networks / $this->query_vars['number'] );
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}
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// If querying for a count only, there's nothing more to do.
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if ( $this->query_vars['count'] ) {
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// $network_ids is actually a count in this case.
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return intval( $network_ids );
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}
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$network_ids = array_map( 'intval', $network_ids );
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if ( 'ids' == $this->query_vars['fields'] ) {
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$this->networks = $network_ids;
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return $this->networks;
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}
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if ( $this->query_vars['update_network_cache'] ) {
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_prime_network_caches( $network_ids );
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}
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// Fetch full network objects from the primed cache.
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$_networks = array();
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foreach ( $network_ids as $network_id ) {
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if ( $_network = get_network( $network_id ) ) {
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$_networks[] = $_network;
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}
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}
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/**
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* Filters the network query results.
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*
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* @since 4.6.0
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*
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* @param array $results An array of networks.
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* @param WP_Network_Query &$this Current instance of WP_Network_Query, passed by reference.
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*/
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$_networks = apply_filters_ref_array( 'the_networks', array( $_networks, &$this ) );
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// Convert to WP_Network instances
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$this->networks = array_map( 'get_network', $_networks );
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return $this->networks;
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}
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/**
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* Used internally to get a list of network IDs matching the query vars.
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*
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* @since 4.6.0
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*
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* @global wpdb $wpdb WordPress database abstraction object.
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*
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* @return int|array A single count of network IDs if a count query. An array of network IDs if a full query.
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*/
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protected function get_network_ids() {
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global $wpdb;
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$order = $this->parse_order( $this->query_vars['order'] );
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// Disable ORDER BY with 'none', an empty array, or boolean false.
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if ( in_array( $this->query_vars['orderby'], array( 'none', array(), false ), true ) ) {
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$orderby = '';
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} elseif ( ! empty( $this->query_vars['orderby'] ) ) {
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$ordersby = is_array( $this->query_vars['orderby'] ) ?
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$this->query_vars['orderby'] :
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preg_split( '/[,\s]/', $this->query_vars['orderby'] );
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$orderby_array = array();
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foreach ( $ordersby as $_key => $_value ) {
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if ( ! $_value ) {
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continue;
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}
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if ( is_int( $_key ) ) {
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$_orderby = $_value;
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$_order = $order;
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} else {
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$_orderby = $_key;
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$_order = $_value;
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}
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$parsed = $this->parse_orderby( $_orderby );
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if ( ! $parsed ) {
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continue;
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}
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if ( 'network__in' === $_orderby ) {
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$orderby_array[] = $parsed;
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continue;
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}
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$orderby_array[] = $parsed . ' ' . $this->parse_order( $_order );
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}
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$orderby = implode( ', ', $orderby_array );
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} else {
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$orderby = "$wpdb->site.id $order";
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}
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$number = absint( $this->query_vars['number'] );
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$offset = absint( $this->query_vars['offset'] );
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if ( ! empty( $number ) ) {
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if ( $offset ) {
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$limits = 'LIMIT ' . $offset . ',' . $number;
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} else {
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$limits = 'LIMIT ' . $number;
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}
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}
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if ( $this->query_vars['count'] ) {
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$fields = 'COUNT(*)';
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} else {
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$fields = "$wpdb->site.id";
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}
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// Parse network IDs for an IN clause.
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if ( ! empty( $this->query_vars['network__in'] ) ) {
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$this->sql_clauses['where']['network__in'] = "$wpdb->site.id IN ( " . implode( ',', wp_parse_id_list( $this->query_vars['network__in'] ) ) . ' )';
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}
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// Parse network IDs for a NOT IN clause.
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if ( ! empty( $this->query_vars['network__not_in'] ) ) {
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$this->sql_clauses['where']['network__not_in'] = "$wpdb->site.id NOT IN ( " . implode( ',', wp_parse_id_list( $this->query_vars['network__not_in'] ) ) . ' )';
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}
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if ( ! empty( $this->query_vars['domain'] ) ) {
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$this->sql_clauses['where']['domain'] = $wpdb->prepare( "$wpdb->site.domain = %s", $this->query_vars['domain'] );
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}
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// Parse network domain for an IN clause.
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if ( is_array( $this->query_vars['domain__in'] ) ) {
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$this->sql_clauses['where']['domain__in'] = "$wpdb->site.domain IN ( '" . implode( "', '", $wpdb->_escape( $this->query_vars['domain__in'] ) ) . "' )";
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}
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// Parse network domain for a NOT IN clause.
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if ( is_array( $this->query_vars['domain__not_in'] ) ) {
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$this->sql_clauses['where']['domain__not_in'] = "$wpdb->site.domain NOT IN ( '" . implode( "', '", $wpdb->_escape( $this->query_vars['domain__not_in'] ) ) . "' )";
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}
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if ( ! empty( $this->query_vars['path'] ) ) {
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$this->sql_clauses['where']['path'] = $wpdb->prepare( "$wpdb->site.path = %s", $this->query_vars['path'] );
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}
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// Parse network path for an IN clause.
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if ( is_array( $this->query_vars['path__in'] ) ) {
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$this->sql_clauses['where']['path__in'] = "$wpdb->site.path IN ( '" . implode( "', '", $wpdb->_escape( $this->query_vars['path__in'] ) ) . "' )";
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}
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// Parse network path for a NOT IN clause.
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if ( is_array( $this->query_vars['path__not_in'] ) ) {
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$this->sql_clauses['where']['path__not_in'] = "$wpdb->site.path NOT IN ( '" . implode( "', '", $wpdb->_escape( $this->query_vars['path__not_in'] ) ) . "' )";
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}
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// Falsey search strings are ignored.
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if ( strlen( $this->query_vars['search'] ) ) {
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$this->sql_clauses['where']['search'] = $this->get_search_sql(
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$this->query_vars['search'],
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array( "$wpdb->site.domain", "$wpdb->site.path" )
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);
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}
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$join = '';
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$where = implode( ' AND ', $this->sql_clauses['where'] );
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$pieces = array( 'fields', 'join', 'where', 'orderby', 'limits', 'groupby' );
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/**
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* Filters the network query clauses.
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*
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* @since 4.6.0
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*
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* @param array $pieces A compacted array of network query clauses.
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* @param WP_Network_Query &$this Current instance of WP_Network_Query, passed by reference.
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*/
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$clauses = apply_filters_ref_array( 'networks_clauses', array( compact( $pieces ), &$this ) );
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$fields = isset( $clauses['fields'] ) ? $clauses['fields'] : '';
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$join = isset( $clauses['join'] ) ? $clauses['join'] : '';
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$where = isset( $clauses['where'] ) ? $clauses['where'] : '';
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$orderby = isset( $clauses['orderby'] ) ? $clauses['orderby'] : '';
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$limits = isset( $clauses['limits'] ) ? $clauses['limits'] : '';
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$groupby = isset( $clauses['groupby'] ) ? $clauses['groupby'] : '';
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if ( $where ) {
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$where = 'WHERE ' . $where;
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}
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if ( $groupby ) {
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$groupby = 'GROUP BY ' . $groupby;
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}
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if ( $orderby ) {
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$orderby = "ORDER BY $orderby";
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}
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$found_rows = '';
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if ( ! $this->query_vars['no_found_rows'] ) {
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$found_rows = 'SQL_CALC_FOUND_ROWS';
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}
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$this->sql_clauses['select'] = "SELECT $found_rows $fields";
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$this->sql_clauses['from'] = "FROM $wpdb->site $join";
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$this->sql_clauses['groupby'] = $groupby;
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$this->sql_clauses['orderby'] = $orderby;
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$this->sql_clauses['limits'] = $limits;
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$this->request = "{$this->sql_clauses['select']} {$this->sql_clauses['from']} {$where} {$this->sql_clauses['groupby']} {$this->sql_clauses['orderby']} {$this->sql_clauses['limits']}";
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if ( $this->query_vars['count'] ) {
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return intval( $wpdb->get_var( $this->request ) );
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}
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$network_ids = $wpdb->get_col( $this->request );
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return array_map( 'intval', $network_ids );
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}
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/**
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* Populates found_networks and max_num_pages properties for the current query
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* if the limit clause was used.
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*
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* @since 4.6.0
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*
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* @global wpdb $wpdb WordPress database abstraction object.
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*/
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private function set_found_networks() {
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global $wpdb;
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if ( $this->query_vars['number'] && ! $this->query_vars['no_found_rows'] ) {
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/**
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* Filters the query used to retrieve found network count.
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*
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* @since 4.6.0
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*
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* @param string $found_networks_query SQL query. Default 'SELECT FOUND_ROWS()'.
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* @param WP_Network_Query $network_query The `WP_Network_Query` instance.
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*/
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$found_networks_query = apply_filters( 'found_networks_query', 'SELECT FOUND_ROWS()', $this );
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$this->found_networks = (int) $wpdb->get_var( $found_networks_query );
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}
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}
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/**
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* Used internally to generate an SQL string for searching across multiple columns.
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*
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* @since 4.6.0
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*
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* @global wpdb $wpdb WordPress database abstraction object.
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*
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* @param string $string Search string.
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* @param array $columns Columns to search.
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*
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* @return string Search SQL.
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*/
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protected function get_search_sql( $string, $columns ) {
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global $wpdb;
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$like = '%' . $wpdb->esc_like( $string ) . '%';
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$searches = array();
|
|
foreach ( $columns as $column ) {
|
|
$searches[] = $wpdb->prepare( "$column LIKE %s", $like );
|
|
}
|
|
|
|
return '(' . implode( ' OR ', $searches ) . ')';
|
|
}
|
|
|
|
/**
|
|
* Parses and sanitizes 'orderby' keys passed to the network query.
|
|
*
|
|
* @since 4.6.0
|
|
*
|
|
* @global wpdb $wpdb WordPress database abstraction object.
|
|
*
|
|
* @param string $orderby Alias for the field to order by.
|
|
* @return string|false Value to used in the ORDER clause. False otherwise.
|
|
*/
|
|
protected function parse_orderby( $orderby ) {
|
|
global $wpdb;
|
|
|
|
$allowed_keys = array(
|
|
'id',
|
|
'domain',
|
|
'path',
|
|
);
|
|
|
|
$parsed = false;
|
|
if ( $orderby == 'network__in' ) {
|
|
$network__in = implode( ',', array_map( 'absint', $this->query_vars['network__in'] ) );
|
|
$parsed = "FIELD( {$wpdb->site}.id, $network__in )";
|
|
} elseif ( $orderby == 'domain_length' || $orderby == 'path_length' ) {
|
|
$field = substr( $orderby, 0, -7 );
|
|
$parsed = "CHAR_LENGTH($wpdb->site.$field)";
|
|
} elseif ( in_array( $orderby, $allowed_keys ) ) {
|
|
$parsed = "$wpdb->site.$orderby";
|
|
}
|
|
|
|
return $parsed;
|
|
}
|
|
|
|
/**
|
|
* Parses an 'order' query variable and cast it to 'ASC' or 'DESC' as necessary.
|
|
*
|
|
* @since 4.6.0
|
|
*
|
|
* @param string $order The 'order' query variable.
|
|
* @return string The sanitized 'order' query variable.
|
|
*/
|
|
protected function parse_order( $order ) {
|
|
if ( ! is_string( $order ) || empty( $order ) ) {
|
|
return 'ASC';
|
|
}
|
|
|
|
if ( 'ASC' === strtoupper( $order ) ) {
|
|
return 'ASC';
|
|
} else {
|
|
return 'DESC';
|
|
}
|
|
}
|
|
}
|