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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
963 lines
32 KiB
PHP
963 lines
32 KiB
PHP
<?php
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/**
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* Taxonomy API: WP_Term_Query class.
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*
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* @package WordPress
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* @subpackage Taxonomy
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* @since 4.6.0
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*/
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/**
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* Class used for querying terms.
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*
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* @since 4.6.0
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*
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* @see WP_Term_Query::__construct() for accepted arguments.
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*/
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class WP_Term_Query {
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/**
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* SQL string used to perform 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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* Metadata query container.
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*
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* @since 4.6.0
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* @var object WP_Meta_Query
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*/
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public $meta_query = false;
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/**
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* Metadata 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 $meta_query_clauses;
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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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'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 terms 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 $terms;
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/**
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* Constructor.
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*
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* Sets up the term query, based on the query vars passed.
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*
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* @since 4.6.0
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* @since 4.6.0 Introduced 'term_taxonomy_id' parameter.
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* @since 4.7.0 Introduced 'object_ids' parameter.
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*
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* @param string|array $query {
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* Optional. Array or query string of term query parameters. Default empty.
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*
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* @type string|array $taxonomy Taxonomy name, or array of taxonomies, to which results should
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* be limited.
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* @type int|array $object_ids Optional. Object ID, or array of object IDs. Results will be
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* limited to terms associated with these objects.
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* @type string $orderby Field(s) to order terms by. Accepts term fields ('name',
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* 'slug', 'term_group', 'term_id', 'id', 'description', 'parent'),
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* 'count' for term taxonomy count, 'include' to match the
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* 'order' of the $include param, 'meta_value', 'meta_value_num',
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* the value of `$meta_key`, the array keys of `$meta_query`, or
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* 'none' to omit the ORDER BY clause. Defaults to 'name'.
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* @type string $order Whether to order terms in ascending or descending order.
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* Accepts 'ASC' (ascending) or 'DESC' (descending).
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* Default 'ASC'.
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* @type bool|int $hide_empty Whether to hide terms not assigned to any posts. Accepts
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* 1|true or 0|false. Default 1|true.
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* @type array|string $include Array or comma/space-separated string of term ids to include.
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* Default empty array.
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* @type array|string $exclude Array or comma/space-separated string of term ids to exclude.
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* If $include is non-empty, $exclude is ignored.
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* Default empty array.
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* @type array|string $exclude_tree Array or comma/space-separated string of term ids to exclude
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* along with all of their descendant terms. If $include is
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* non-empty, $exclude_tree is ignored. Default empty array.
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* @type int|string $number Maximum number of terms to return. Accepts ''|0 (all) or any
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* positive number. Default ''|0 (all).
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* @type int $offset The number by which to offset the terms query. Default empty.
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* @type string $fields Term fields to query for. Accepts 'all' (returns an array of
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* complete term objects), 'all_with_object_id' (returns an
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* array of term objects with the 'object_id' param; only works
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* when the `$fields` parameter is 'object_ids' ), 'ids'
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* (returns an array of ids), 'tt_ids' (returns an array of
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* term taxonomy ids), 'id=>parent' (returns an associative
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* array with ids as keys, parent term IDs as values), 'names'
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* (returns an array of term names), 'count' (returns the number
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* of matching terms), 'id=>name' (returns an associative array
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* with ids as keys, term names as values), or 'id=>slug'
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* (returns an associative array with ids as keys, term slugs
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* as values). Default 'all'.
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* @type bool $count Whether to return a term count (true) or array of term objects
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* (false). Will take precedence over `$fields` if true.
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* Default false.
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* @type string|array $name Optional. Name or array of names to return term(s) for.
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* Default empty.
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* @type string|array $slug Optional. Slug or array of slugs to return term(s) for.
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* Default empty.
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* @type int|array $term_taxonomy_id Optional. Term taxonomy ID, or array of term taxonomy IDs,
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* to match when querying terms.
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* @type bool $hierarchical Whether to include terms that have non-empty descendants (even
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* if $hide_empty is set to true). Default true.
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* @type string $search Search criteria to match terms. Will be SQL-formatted with
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* wildcards before and after. Default empty.
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* @type string $name__like Retrieve terms with criteria by which a term is LIKE
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* `$name__like`. Default empty.
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* @type string $description__like Retrieve terms where the description is LIKE
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* `$description__like`. Default empty.
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* @type bool $pad_counts Whether to pad the quantity of a term's children in the
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* quantity of each term's "count" object variable.
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* Default false.
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* @type string $get Whether to return terms regardless of ancestry or whether the
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* terms are empty. Accepts 'all' or empty (disabled).
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* Default empty.
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* @type int $child_of Term ID to retrieve child terms of. If multiple taxonomies
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* are passed, $child_of is ignored. Default 0.
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* @type int|string $parent Parent term ID to retrieve direct-child terms of.
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* Default empty.
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* @type bool $childless True to limit results to terms that have no children.
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* This parameter has no effect on non-hierarchical taxonomies.
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* Default false.
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* @type string $cache_domain Unique cache key to be produced when this query is stored in
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* an object cache. Default is 'core'.
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* @type bool $update_term_meta_cache Whether to prime meta caches for matched terms. Default true.
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* @type array $meta_query Optional. Meta query clauses to limit retrieved terms by.
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* See `WP_Meta_Query`. Default empty.
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* @type string $meta_key Limit terms to those matching a specific metadata key.
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* Can be used in conjunction with `$meta_value`. Default empty.
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* @type string $meta_value Limit terms to those matching a specific metadata value.
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* Usually used in conjunction with `$meta_key`. Default empty.
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* @type string $meta_type Type of object metadata is for (e.g., comment, post, or user).
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* Default empty.
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* @type string $meta_compare Comparison operator to test the 'meta_value'. Default empty.
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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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'taxonomy' => null,
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'object_ids' => null,
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'orderby' => 'name',
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'order' => 'ASC',
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'hide_empty' => true,
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'include' => array(),
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'exclude' => array(),
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'exclude_tree' => array(),
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'number' => '',
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'offset' => '',
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'fields' => 'all',
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'count' => false,
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'name' => '',
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'slug' => '',
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'term_taxonomy_id' => '',
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'hierarchical' => true,
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'search' => '',
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'name__like' => '',
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'description__like' => '',
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'pad_counts' => false,
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'get' => '',
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'child_of' => 0,
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'parent' => '',
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'childless' => false,
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'cache_domain' => 'core',
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'update_term_meta_cache' => true,
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'meta_query' => '',
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'meta_key' => '',
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'meta_value' => '',
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'meta_type' => '',
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'meta_compare' => '',
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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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* Parse arguments passed to the term 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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* @param string|array $query WP_Term_Query arguments. See WP_Term_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 = $this->query_vars;
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}
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$taxonomies = isset( $query['taxonomy'] ) ? (array) $query['taxonomy'] : null;
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/**
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* Filters the terms query default arguments.
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*
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* Use {@see 'get_terms_args'} to filter the passed arguments.
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*
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* @since 4.4.0
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*
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* @param array $defaults An array of default get_terms() arguments.
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* @param array $taxonomies An array of taxonomies.
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*/
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$this->query_var_defaults = apply_filters( 'get_terms_defaults', $this->query_var_defaults, $taxonomies );
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$query = wp_parse_args( $query, $this->query_var_defaults );
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$query['number'] = absint( $query['number'] );
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$query['offset'] = absint( $query['offset'] );
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// 'parent' overrides 'child_of'.
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if ( 0 < intval( $query['parent'] ) ) {
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$query['child_of'] = false;
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}
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if ( 'all' == $query['get'] ) {
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$query['childless'] = false;
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$query['child_of'] = 0;
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$query['hide_empty'] = 0;
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$query['hierarchical'] = false;
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$query['pad_counts'] = false;
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}
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$query['taxonomy'] = $taxonomies;
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$this->query_vars = $query;
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/**
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* Fires after term 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_Term_Query $this Current instance of WP_Term_Query.
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*/
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do_action( 'parse_term_query', $this );
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}
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/**
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* Sets up the query for retrieving terms.
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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 terms, or number of terms 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_terms();
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}
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/**
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* Get terms, based on 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 array List of terms.
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*/
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public function get_terms() {
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global $wpdb;
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$this->parse_query( $this->query_vars );
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$args = &$this->query_vars;
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// Set up meta_query so it's available to 'pre_get_terms'.
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$this->meta_query = new WP_Meta_Query();
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$this->meta_query->parse_query_vars( $args );
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/**
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* Fires before terms are retrieved.
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*
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* @since 4.6.0
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*
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* @param WP_Term_Query $this Current instance of WP_Term_Query.
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*/
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do_action( 'pre_get_terms', $this );
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$taxonomies = (array) $args['taxonomy'];
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// Save queries by not crawling the tree in the case of multiple taxes or a flat tax.
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$has_hierarchical_tax = false;
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if ( $taxonomies ) {
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foreach ( $taxonomies as $_tax ) {
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if ( is_taxonomy_hierarchical( $_tax ) ) {
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$has_hierarchical_tax = true;
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}
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}
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}
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if ( ! $has_hierarchical_tax ) {
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$args['hierarchical'] = false;
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$args['pad_counts'] = false;
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}
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// 'parent' overrides 'child_of'.
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if ( 0 < intval( $args['parent'] ) ) {
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$args['child_of'] = false;
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}
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if ( 'all' == $args['get'] ) {
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$args['childless'] = false;
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$args['child_of'] = 0;
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$args['hide_empty'] = 0;
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$args['hierarchical'] = false;
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$args['pad_counts'] = false;
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}
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/**
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* Filters the terms query arguments.
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*
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* @since 3.1.0
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*
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* @param array $args An array of get_terms() arguments.
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* @param array $taxonomies An array of taxonomies.
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*/
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$args = apply_filters( 'get_terms_args', $args, $taxonomies );
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// Avoid the query if the queried parent/child_of term has no descendants.
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$child_of = $args['child_of'];
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$parent = $args['parent'];
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if ( $child_of ) {
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$_parent = $child_of;
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} elseif ( $parent ) {
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$_parent = $parent;
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} else {
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$_parent = false;
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}
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if ( $_parent ) {
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$in_hierarchy = false;
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foreach ( $taxonomies as $_tax ) {
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$hierarchy = _get_term_hierarchy( $_tax );
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if ( isset( $hierarchy[ $_parent ] ) ) {
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$in_hierarchy = true;
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}
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}
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if ( ! $in_hierarchy ) {
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return array();
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}
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}
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// 'term_order' is a legal sort order only when joining the relationship table.
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$_orderby = $this->query_vars['orderby'];
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if ( 'term_order' === $_orderby && empty( $this->query_vars['object_ids'] ) ) {
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$_orderby = 'term_id';
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}
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$orderby = $this->parse_orderby( $_orderby );
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if ( $orderby ) {
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$orderby = "ORDER BY $orderby";
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}
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$order = $this->parse_order( $this->query_vars['order'] );
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if ( $taxonomies ) {
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$this->sql_clauses['where']['taxonomy'] = "tt.taxonomy IN ('" . implode( "', '", array_map( 'esc_sql', $taxonomies ) ) . "')";
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}
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$exclude = $args['exclude'];
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$exclude_tree = $args['exclude_tree'];
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$include = $args['include'];
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$inclusions = '';
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if ( ! empty( $include ) ) {
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$exclude = '';
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$exclude_tree = '';
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$inclusions = implode( ',', wp_parse_id_list( $include ) );
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}
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if ( ! empty( $inclusions ) ) {
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$this->sql_clauses['where']['inclusions'] = 't.term_id IN ( ' . $inclusions . ' )';
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}
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$exclusions = array();
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if ( ! empty( $exclude_tree ) ) {
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$exclude_tree = wp_parse_id_list( $exclude_tree );
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$excluded_children = $exclude_tree;
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foreach ( $exclude_tree as $extrunk ) {
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$excluded_children = array_merge(
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$excluded_children,
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(array) get_terms( reset( $taxonomies ), array(
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'child_of' => intval( $extrunk ),
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'fields' => 'ids',
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'hide_empty' => 0
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) )
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);
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}
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$exclusions = array_merge( $excluded_children, $exclusions );
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}
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if ( ! empty( $exclude ) ) {
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$exclusions = array_merge( wp_parse_id_list( $exclude ), $exclusions );
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}
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// 'childless' terms are those without an entry in the flattened term hierarchy.
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$childless = (bool) $args['childless'];
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if ( $childless ) {
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foreach ( $taxonomies as $_tax ) {
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$term_hierarchy = _get_term_hierarchy( $_tax );
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$exclusions = array_merge( array_keys( $term_hierarchy ), $exclusions );
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}
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}
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if ( ! empty( $exclusions ) ) {
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$exclusions = 't.term_id NOT IN (' . implode( ',', array_map( 'intval', $exclusions ) ) . ')';
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} else {
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$exclusions = '';
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}
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/**
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* Filters the terms to exclude from the terms query.
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*
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* @since 2.3.0
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*
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* @param string $exclusions `NOT IN` clause of the terms query.
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* @param array $args An array of terms query arguments.
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* @param array $taxonomies An array of taxonomies.
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*/
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$exclusions = apply_filters( 'list_terms_exclusions', $exclusions, $args, $taxonomies );
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if ( ! empty( $exclusions ) ) {
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// Must do string manipulation here for backward compatibility with filter.
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$this->sql_clauses['where']['exclusions'] = preg_replace( '/^\s*AND\s*/', '', $exclusions );
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}
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if (
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( ! empty( $args['name'] ) ) ||
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( is_string( $args['name'] ) && 0 !== strlen( $args['name'] ) )
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) {
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$names = (array) $args['name'];
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foreach ( $names as &$_name ) {
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// `sanitize_term_field()` returns slashed data.
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$_name = stripslashes( sanitize_term_field( 'name', $_name, 0, reset( $taxonomies ), 'db' ) );
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}
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$this->sql_clauses['where']['name'] = "t.name IN ('" . implode( "', '", array_map( 'esc_sql', $names ) ) . "')";
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}
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if (
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( ! empty( $args['slug'] ) ) ||
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( is_string( $args['slug'] ) && 0 !== strlen( $args['slug'] ) )
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) {
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if ( is_array( $args['slug'] ) ) {
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$slug = array_map( 'sanitize_title', $args['slug'] );
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$this->sql_clauses['where']['slug'] = "t.slug IN ('" . implode( "', '", $slug ) . "')";
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} else {
|
|
$slug = sanitize_title( $args['slug'] );
|
|
$this->sql_clauses['where']['slug'] = "t.slug = '$slug'";
|
|
}
|
|
}
|
|
|
|
if ( ! empty( $args['term_taxonomy_id'] ) ) {
|
|
if ( is_array( $args['term_taxonomy_id'] ) ) {
|
|
$tt_ids = implode( ',', array_map( 'intval', $args['term_taxonomy_id'] ) );
|
|
$this->sql_clauses['where']['term_taxonomy_id'] = "tt.term_taxonomy_id IN ({$tt_ids})";
|
|
} else {
|
|
$this->sql_clauses['where']['term_taxonomy_id'] = $wpdb->prepare( "tt.term_taxonomy_id = %d", $args['term_taxonomy_id'] );
|
|
}
|
|
}
|
|
|
|
if ( ! empty( $args['name__like'] ) ) {
|
|
$this->sql_clauses['where']['name__like'] = $wpdb->prepare( "t.name LIKE %s", '%' . $wpdb->esc_like( $args['name__like'] ) . '%' );
|
|
}
|
|
|
|
if ( ! empty( $args['description__like'] ) ) {
|
|
$this->sql_clauses['where']['description__like'] = $wpdb->prepare( "tt.description LIKE %s", '%' . $wpdb->esc_like( $args['description__like'] ) . '%' );
|
|
}
|
|
|
|
if ( ! empty( $args['object_ids'] ) ) {
|
|
$object_ids = $args['object_ids'];
|
|
if ( ! is_array( $object_ids ) ) {
|
|
$object_ids = array( $object_ids );
|
|
}
|
|
|
|
$object_ids = implode( ', ', array_map( 'intval', $object_ids ) );
|
|
$this->sql_clauses['where']['object_ids'] = "tr.object_id IN ($object_ids)";
|
|
}
|
|
|
|
/*
|
|
* When querying for object relationships, the 'count > 0' check
|
|
* added by 'hide_empty' is superfluous.
|
|
*/
|
|
if ( ! empty( $args['object_ids'] ) ) {
|
|
$args['hide_empty'] = false;
|
|
}
|
|
|
|
if ( '' !== $parent ) {
|
|
$parent = (int) $parent;
|
|
$this->sql_clauses['where']['parent'] = "tt.parent = '$parent'";
|
|
}
|
|
|
|
$hierarchical = $args['hierarchical'];
|
|
if ( 'count' == $args['fields'] ) {
|
|
$hierarchical = false;
|
|
}
|
|
if ( $args['hide_empty'] && !$hierarchical ) {
|
|
$this->sql_clauses['where']['count'] = 'tt.count > 0';
|
|
}
|
|
|
|
$number = $args['number'];
|
|
$offset = $args['offset'];
|
|
|
|
// Don't limit the query results when we have to descend the family tree.
|
|
if ( $number && ! $hierarchical && ! $child_of && '' === $parent ) {
|
|
if ( $offset ) {
|
|
$limits = 'LIMIT ' . $offset . ',' . $number;
|
|
} else {
|
|
$limits = 'LIMIT ' . $number;
|
|
}
|
|
} else {
|
|
$limits = '';
|
|
}
|
|
|
|
|
|
if ( ! empty( $args['search'] ) ) {
|
|
$this->sql_clauses['where']['search'] = $this->get_search_sql( $args['search'] );
|
|
}
|
|
|
|
// Meta query support.
|
|
$join = '';
|
|
$distinct = '';
|
|
|
|
// Reparse meta_query query_vars, in case they were modified in a 'pre_get_terms' callback.
|
|
$this->meta_query->parse_query_vars( $this->query_vars );
|
|
$mq_sql = $this->meta_query->get_sql( 'term', 't', 'term_id' );
|
|
$meta_clauses = $this->meta_query->get_clauses();
|
|
|
|
if ( ! empty( $meta_clauses ) ) {
|
|
$join .= $mq_sql['join'];
|
|
$this->sql_clauses['where']['meta_query'] = preg_replace( '/^\s*AND\s*/', '', $mq_sql['where'] );
|
|
$distinct .= "DISTINCT";
|
|
|
|
}
|
|
|
|
$selects = array();
|
|
switch ( $args['fields'] ) {
|
|
case 'all':
|
|
case 'all_with_object_id' :
|
|
case 'tt_ids' :
|
|
case 'slugs' :
|
|
$selects = array( 't.*', 'tt.*' );
|
|
if ( 'all_with_object_id' === $args['fields'] && ! empty( $args['object_ids'] ) ) {
|
|
$selects[] = 'tr.object_id';
|
|
}
|
|
break;
|
|
case 'ids':
|
|
case 'id=>parent':
|
|
$selects = array( 't.term_id', 'tt.parent', 'tt.count', 'tt.taxonomy' );
|
|
break;
|
|
case 'names':
|
|
$selects = array( 't.term_id', 'tt.parent', 'tt.count', 't.name', 'tt.taxonomy' );
|
|
break;
|
|
case 'count':
|
|
$orderby = '';
|
|
$order = '';
|
|
$selects = array( 'COUNT(*)' );
|
|
break;
|
|
case 'id=>name':
|
|
$selects = array( 't.term_id', 't.name', 'tt.count', 'tt.taxonomy' );
|
|
break;
|
|
case 'id=>slug':
|
|
$selects = array( 't.term_id', 't.slug', 'tt.count', 'tt.taxonomy' );
|
|
break;
|
|
}
|
|
|
|
$_fields = $args['fields'];
|
|
|
|
/**
|
|
* Filters the fields to select in the terms query.
|
|
*
|
|
* Field lists modified using this filter will only modify the term fields returned
|
|
* by the function when the `$fields` parameter set to 'count' or 'all'. In all other
|
|
* cases, the term fields in the results array will be determined by the `$fields`
|
|
* parameter alone.
|
|
*
|
|
* Use of this filter can result in unpredictable behavior, and is not recommended.
|
|
*
|
|
* @since 2.8.0
|
|
*
|
|
* @param array $selects An array of fields to select for the terms query.
|
|
* @param array $args An array of term query arguments.
|
|
* @param array $taxonomies An array of taxonomies.
|
|
*/
|
|
$fields = implode( ', ', apply_filters( 'get_terms_fields', $selects, $args, $taxonomies ) );
|
|
|
|
$join .= " INNER JOIN $wpdb->term_taxonomy AS tt ON t.term_id = tt.term_id";
|
|
|
|
if ( ! empty( $this->query_vars['object_ids'] ) ) {
|
|
$join .= " INNER JOIN {$wpdb->term_relationships} AS tr ON tr.term_taxonomy_id = tt.term_taxonomy_id";
|
|
}
|
|
|
|
$where = implode( ' AND ', $this->sql_clauses['where'] );
|
|
|
|
/**
|
|
* Filters the terms query SQL clauses.
|
|
*
|
|
* @since 3.1.0
|
|
*
|
|
* @param array $pieces Terms query SQL clauses.
|
|
* @param array $taxonomies An array of taxonomies.
|
|
* @param array $args An array of terms query arguments.
|
|
*/
|
|
$clauses = apply_filters( 'terms_clauses', compact( 'fields', 'join', 'where', 'distinct', 'orderby', 'order', 'limits' ), $taxonomies, $args );
|
|
|
|
$fields = isset( $clauses[ 'fields' ] ) ? $clauses[ 'fields' ] : '';
|
|
$join = isset( $clauses[ 'join' ] ) ? $clauses[ 'join' ] : '';
|
|
$where = isset( $clauses[ 'where' ] ) ? $clauses[ 'where' ] : '';
|
|
$distinct = isset( $clauses[ 'distinct' ] ) ? $clauses[ 'distinct' ] : '';
|
|
$orderby = isset( $clauses[ 'orderby' ] ) ? $clauses[ 'orderby' ] : '';
|
|
$order = isset( $clauses[ 'order' ] ) ? $clauses[ 'order' ] : '';
|
|
$limits = isset( $clauses[ 'limits' ] ) ? $clauses[ 'limits' ] : '';
|
|
|
|
if ( $where ) {
|
|
$where = "WHERE $where";
|
|
}
|
|
|
|
$this->sql_clauses['select'] = "SELECT $distinct $fields";
|
|
$this->sql_clauses['from'] = "FROM $wpdb->terms AS t $join";
|
|
$this->sql_clauses['orderby'] = $orderby ? "$orderby $order" : '';
|
|
$this->sql_clauses['limits'] = $limits;
|
|
|
|
$this->request = "{$this->sql_clauses['select']} {$this->sql_clauses['from']} {$where} {$this->sql_clauses['orderby']} {$this->sql_clauses['limits']}";
|
|
|
|
// $args can be anything. Only use the args defined in defaults to compute the key.
|
|
$key = md5( serialize( wp_array_slice_assoc( $args, array_keys( $this->query_var_defaults ) ) ) . serialize( $taxonomies ) . $this->request );
|
|
$last_changed = wp_cache_get_last_changed( 'terms' );
|
|
$cache_key = "get_terms:$key:$last_changed";
|
|
$cache = wp_cache_get( $cache_key, 'terms' );
|
|
if ( false !== $cache ) {
|
|
if ( 'all' === $_fields ) {
|
|
$cache = array_map( 'get_term', $cache );
|
|
}
|
|
|
|
$this->terms = $cache;
|
|
return $this->terms;
|
|
}
|
|
|
|
if ( 'count' == $_fields ) {
|
|
$count = $wpdb->get_var( $this->request );
|
|
wp_cache_set( $cache_key, $count, 'terms' );
|
|
return $count;
|
|
}
|
|
|
|
$terms = $wpdb->get_results( $this->request );
|
|
if ( 'all' == $_fields || 'all_with_object_id' === $_fields ) {
|
|
update_term_cache( $terms );
|
|
}
|
|
|
|
// Prime termmeta cache.
|
|
if ( $args['update_term_meta_cache'] ) {
|
|
$term_ids = wp_list_pluck( $terms, 'term_id' );
|
|
update_termmeta_cache( $term_ids );
|
|
}
|
|
|
|
if ( empty( $terms ) ) {
|
|
wp_cache_add( $cache_key, array(), 'terms', DAY_IN_SECONDS );
|
|
return array();
|
|
}
|
|
|
|
if ( $child_of ) {
|
|
foreach ( $taxonomies as $_tax ) {
|
|
$children = _get_term_hierarchy( $_tax );
|
|
if ( ! empty( $children ) ) {
|
|
$terms = _get_term_children( $child_of, $terms, $_tax );
|
|
}
|
|
}
|
|
}
|
|
|
|
// Update term counts to include children.
|
|
if ( $args['pad_counts'] && 'all' == $_fields ) {
|
|
foreach ( $taxonomies as $_tax ) {
|
|
_pad_term_counts( $terms, $_tax );
|
|
}
|
|
}
|
|
|
|
// Make sure we show empty categories that have children.
|
|
if ( $hierarchical && $args['hide_empty'] && is_array( $terms ) ) {
|
|
foreach ( $terms as $k => $term ) {
|
|
if ( ! $term->count ) {
|
|
$children = get_term_children( $term->term_id, $term->taxonomy );
|
|
if ( is_array( $children ) ) {
|
|
foreach ( $children as $child_id ) {
|
|
$child = get_term( $child_id, $term->taxonomy );
|
|
if ( $child->count ) {
|
|
continue 2;
|
|
}
|
|
}
|
|
}
|
|
|
|
// It really is empty.
|
|
unset( $terms[ $k ] );
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* When querying for terms connected to objects, we may get
|
|
* duplicate results. The duplicates should be preserved if
|
|
* `$fields` is 'all_with_object_id', but should otherwise be
|
|
* removed.
|
|
*/
|
|
if ( ! empty( $args['object_ids'] ) && 'all_with_object_id' != $_fields ) {
|
|
$_tt_ids = $_terms = array();
|
|
foreach ( $terms as $term ) {
|
|
if ( isset( $_tt_ids[ $term->term_id ] ) ) {
|
|
continue;
|
|
}
|
|
|
|
$_tt_ids[ $term->term_id ] = 1;
|
|
$_terms[] = $term;
|
|
}
|
|
|
|
$terms = $_terms;
|
|
}
|
|
|
|
$_terms = array();
|
|
if ( 'id=>parent' == $_fields ) {
|
|
foreach ( $terms as $term ) {
|
|
$_terms[ $term->term_id ] = $term->parent;
|
|
}
|
|
} elseif ( 'ids' == $_fields ) {
|
|
foreach ( $terms as $term ) {
|
|
$_terms[] = (int) $term->term_id;
|
|
}
|
|
} elseif ( 'tt_ids' == $_fields ) {
|
|
foreach ( $terms as $term ) {
|
|
$_terms[] = (int) $term->term_taxonomy_id;
|
|
}
|
|
} elseif ( 'names' == $_fields ) {
|
|
foreach ( $terms as $term ) {
|
|
$_terms[] = $term->name;
|
|
}
|
|
} elseif ( 'slugs' == $_fields ) {
|
|
foreach ( $terms as $term ) {
|
|
$_terms[] = $term->slug;
|
|
}
|
|
} elseif ( 'id=>name' == $_fields ) {
|
|
foreach ( $terms as $term ) {
|
|
$_terms[ $term->term_id ] = $term->name;
|
|
}
|
|
} elseif ( 'id=>slug' == $_fields ) {
|
|
foreach ( $terms as $term ) {
|
|
$_terms[ $term->term_id ] = $term->slug;
|
|
}
|
|
}
|
|
|
|
if ( ! empty( $_terms ) ) {
|
|
$terms = $_terms;
|
|
}
|
|
|
|
// Hierarchical queries are not limited, so 'offset' and 'number' must be handled now.
|
|
if ( $hierarchical && $number && is_array( $terms ) ) {
|
|
if ( $offset >= count( $terms ) ) {
|
|
$terms = array();
|
|
} else {
|
|
$terms = array_slice( $terms, $offset, $number, true );
|
|
}
|
|
}
|
|
|
|
wp_cache_add( $cache_key, $terms, 'terms', DAY_IN_SECONDS );
|
|
|
|
if ( 'all' === $_fields || 'all_with_object_id' === $_fields ) {
|
|
$terms = array_map( 'get_term', $terms );
|
|
}
|
|
|
|
$this->terms = $terms;
|
|
return $this->terms;
|
|
}
|
|
|
|
/**
|
|
* Parse and sanitize 'orderby' keys passed to the term query.
|
|
*
|
|
* @since 4.6.0
|
|
*
|
|
* @global wpdb $wpdb WordPress database abstraction object.
|
|
*
|
|
* @param string $orderby_raw Alias for the field to order by.
|
|
* @return string|false Value to used in the ORDER clause. False otherwise.
|
|
*/
|
|
protected function parse_orderby( $orderby_raw ) {
|
|
$_orderby = strtolower( $orderby_raw );
|
|
$maybe_orderby_meta = false;
|
|
|
|
if ( in_array( $_orderby, array( 'term_id', 'name', 'slug', 'term_group' ), true ) ) {
|
|
$orderby = "t.$_orderby";
|
|
} elseif ( in_array( $_orderby, array( 'count', 'parent', 'taxonomy', 'term_taxonomy_id', 'description' ), true ) ) {
|
|
$orderby = "tt.$_orderby";
|
|
} elseif ( 'term_order' === $_orderby ) {
|
|
$orderby = 'tr.term_order';
|
|
} elseif ( 'include' == $_orderby && ! empty( $this->query_vars['include'] ) ) {
|
|
$include = implode( ',', wp_parse_id_list( $this->query_vars['include'] ) );
|
|
$orderby = "FIELD( t.term_id, $include )";
|
|
} elseif ( 'none' == $_orderby ) {
|
|
$orderby = '';
|
|
} elseif ( empty( $_orderby ) || 'id' == $_orderby || 'term_id' === $_orderby ) {
|
|
$orderby = 't.term_id';
|
|
} else {
|
|
$orderby = 't.name';
|
|
|
|
// This may be a value of orderby related to meta.
|
|
$maybe_orderby_meta = true;
|
|
}
|
|
|
|
/**
|
|
* Filters the ORDERBY clause of the terms query.
|
|
*
|
|
* @since 2.8.0
|
|
*
|
|
* @param string $orderby `ORDERBY` clause of the terms query.
|
|
* @param array $args An array of terms query arguments.
|
|
* @param array $taxonomies An array of taxonomies.
|
|
*/
|
|
$orderby = apply_filters( 'get_terms_orderby', $orderby, $this->query_vars, $this->query_vars['taxonomy'] );
|
|
|
|
// Run after the 'get_terms_orderby' filter for backward compatibility.
|
|
if ( $maybe_orderby_meta ) {
|
|
$maybe_orderby_meta = $this->parse_orderby_meta( $_orderby );
|
|
if ( $maybe_orderby_meta ) {
|
|
$orderby = $maybe_orderby_meta;
|
|
}
|
|
}
|
|
|
|
return $orderby;
|
|
}
|
|
|
|
/**
|
|
* Generate the ORDER BY clause for an 'orderby' param that is potentially related to a meta query.
|
|
*
|
|
* @since 4.6.0
|
|
*
|
|
* @param string $orderby_raw Raw 'orderby' value passed to WP_Term_Query.
|
|
* @return string ORDER BY clause.
|
|
*/
|
|
protected function parse_orderby_meta( $orderby_raw ) {
|
|
$orderby = '';
|
|
|
|
// Tell the meta query to generate its SQL, so we have access to table aliases.
|
|
$this->meta_query->get_sql( 'term', 't', 'term_id' );
|
|
$meta_clauses = $this->meta_query->get_clauses();
|
|
if ( ! $meta_clauses || ! $orderby_raw ) {
|
|
return $orderby;
|
|
}
|
|
|
|
$allowed_keys = array();
|
|
$primary_meta_key = null;
|
|
$primary_meta_query = reset( $meta_clauses );
|
|
if ( ! empty( $primary_meta_query['key'] ) ) {
|
|
$primary_meta_key = $primary_meta_query['key'];
|
|
$allowed_keys[] = $primary_meta_key;
|
|
}
|
|
$allowed_keys[] = 'meta_value';
|
|
$allowed_keys[] = 'meta_value_num';
|
|
$allowed_keys = array_merge( $allowed_keys, array_keys( $meta_clauses ) );
|
|
|
|
if ( ! in_array( $orderby_raw, $allowed_keys, true ) ) {
|
|
return $orderby;
|
|
}
|
|
|
|
switch( $orderby_raw ) {
|
|
case $primary_meta_key:
|
|
case 'meta_value':
|
|
if ( ! empty( $primary_meta_query['type'] ) ) {
|
|
$orderby = "CAST({$primary_meta_query['alias']}.meta_value AS {$primary_meta_query['cast']})";
|
|
} else {
|
|
$orderby = "{$primary_meta_query['alias']}.meta_value";
|
|
}
|
|
break;
|
|
|
|
case 'meta_value_num':
|
|
$orderby = "{$primary_meta_query['alias']}.meta_value+0";
|
|
break;
|
|
|
|
default:
|
|
if ( array_key_exists( $orderby_raw, $meta_clauses ) ) {
|
|
// $orderby corresponds to a meta_query clause.
|
|
$meta_clause = $meta_clauses[ $orderby_raw ];
|
|
$orderby = "CAST({$meta_clause['alias']}.meta_value AS {$meta_clause['cast']})";
|
|
}
|
|
break;
|
|
}
|
|
|
|
return $orderby;
|
|
}
|
|
|
|
/**
|
|
* Parse 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 'DESC';
|
|
}
|
|
|
|
if ( 'ASC' === strtoupper( $order ) ) {
|
|
return 'ASC';
|
|
} else {
|
|
return 'DESC';
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Used internally to generate a SQL string related to the 'search' parameter.
|
|
*
|
|
* @since 4.6.0
|
|
*
|
|
* @global wpdb $wpdb WordPress database abstraction object.
|
|
*
|
|
* @param string $string
|
|
* @return string
|
|
*/
|
|
protected function get_search_sql( $string ) {
|
|
global $wpdb;
|
|
|
|
$like = '%' . $wpdb->esc_like( $string ) . '%';
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|
|
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return $wpdb->prepare( '((t.name LIKE %s) OR (t.slug LIKE %s))', $like, $like );
|
|
}
|
|
}
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