WP_Term_Query::__construct( string|array $query = '' )

Constructor.


Description Description

Sets up the term query, based on the query vars passed.


Parameters Parameters

$query

(string|array) (Optional) Array or query string of term query parameters.

  • 'taxonomy'
    (string|array) Taxonomy name, or array of taxonomies, to which results should be limited.
  • 'object_ids'
    (int|array) Optional. Object ID, or array of object IDs. Results will be limited to terms associated with these objects.
  • 'orderby'
    (string) Field(s) to order terms by. Accepts term fields ('name', 'slug', 'term_group', 'term_id', 'id', 'description', 'parent'), 'count' for term taxonomy count, 'include' to match the 'order' of the $include param, 'slug__in' to match the 'order' of the $slug param, 'meta_value', 'meta_value_num', the value of $meta_key , the array keys of $meta_query, or 'none' to omit the ORDER BY clause. Defaults to 'name'.
  • 'order'
    (string) Whether to order terms in ascending or descending order. Accepts 'ASC' (ascending) or 'DESC' (descending). Default 'ASC'.
  • 'hide_empty'
    (bool|int) Whether to hide terms not assigned to any posts. Accepts 1|true or 0|false. Default 1|true.
  • 'include'
    (array|string) Array or comma/space-separated string of term ids to include. Default empty array.
  • 'exclude'
    (array|string) Array or comma/space-separated string of term ids to exclude. If $include is non-empty, $exclude is ignored. Default empty array.
  • 'exclude_tree'
    (array|string) Array or comma/space-separated string of term ids to exclude along with all of their descendant terms. If $include is non-empty, $exclude_tree is ignored. Default empty array.
  • 'number'
    (int|string) Maximum number of terms to return. Accepts ''|0 (all) or any positive number. Default ''|0 (all). Note that $number may not return accurate results when coupled with $object_ids. See #41796 for details.
  • 'offset'
    (int) The number by which to offset the terms query.
  • 'fields'
    (string) Term fields to query for. Accepts 'all' (returns an array of complete term objects), 'all_with_object_id' (returns an array of term objects with the 'object_id' param; only works when the $fields parameter is 'object_ids' ), 'ids' (returns an array of ids), 'tt_ids' (returns an array of term taxonomy ids), 'id=>parent' (returns an associative array with ids as keys, parent term IDs as values), 'names' (returns an array of term names), 'count' (returns the number of matching terms), 'id=>name' (returns an associative array with ids as keys, term names as values), or 'id=>slug' (returns an associative array with ids as keys, term slugs as values). Default 'all'.
  • 'count'
    (bool) Whether to return a term count (true) or array of term objects (false). Will take precedence over $fields if true. Default false.
  • 'name'
    (string|array) Optional. Name or array of names to return term(s) for.
  • 'slug'
    (string|array) Optional. Slug or array of slugs to return term(s) for.
  • 'term_taxonomy_id'
    (int|array) Optional. Term taxonomy ID, or array of term taxonomy IDs, to match when querying terms.
  • 'hierarchical'
    (bool) Whether to include terms that have non-empty descendants (even if $hide_empty is set to true). Default true.
  • 'search'
    (string) Search criteria to match terms. Will be SQL-formatted with wildcards before and after.
  • 'name__like'
    (string) Retrieve terms with criteria by which a term is LIKE $name__like.
  • 'description__like'
    (string) Retrieve terms where the description is LIKE $description__like.
  • 'pad_counts'
    (bool) Whether to pad the quantity of a term's children in the quantity of each term's "count" object variable. Default false.
  • 'get'
    (string) Whether to return terms regardless of ancestry or whether the terms are empty. Accepts 'all' or empty (disabled).
  • 'child_of'
    (int) Term ID to retrieve child terms of. If multiple taxonomies are passed, $child_of is ignored. Default 0.
  • 'parent'
    (int|string) Parent term ID to retrieve direct-child terms of.
  • 'childless'
    (bool) True to limit results to terms that have no children. This parameter has no effect on non-hierarchical taxonomies. Default false.
  • 'cache_domain'
    (string) Unique cache key to be produced when this query is stored in an object cache. Default is 'core'.
  • 'update_term_meta_cache'
    (bool) Whether to prime meta caches for matched terms. Default true.
  • 'meta_query'
    (array) Optional. Meta query clauses to limit retrieved terms by. See WP_Meta_Query.
  • 'meta_key'
    (string) Limit terms to those matching a specific metadata key. Can be used in conjunction with $meta_value.
  • 'meta_value'
    (string) Limit terms to those matching a specific metadata value. Usually used in conjunction with $meta_key.
  • 'meta_type'
    (string) Type of object metadata is for (e.g., comment, post, or user).
  • 'meta_compare'
    (string) Comparison operator to test the 'meta_value'.

Default value: ''


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Source Source

File: wp-includes/class-wp-term-query.php

	public function __construct( $query = '' ) {
		$this->query_var_defaults = array(
			'taxonomy'               => null,
			'object_ids'             => null,
			'orderby'                => 'name',
			'order'                  => 'ASC',
			'hide_empty'             => true,
			'include'                => array(),
			'exclude'                => array(),
			'exclude_tree'           => array(),
			'number'                 => '',
			'offset'                 => '',
			'fields'                 => 'all',
			'count'                  => false,
			'name'                   => '',
			'slug'                   => '',
			'term_taxonomy_id'       => '',
			'hierarchical'           => true,
			'search'                 => '',
			'name__like'             => '',
			'description__like'      => '',
			'pad_counts'             => false,
			'get'                    => '',
			'child_of'               => 0,
			'parent'                 => '',
			'childless'              => false,
			'cache_domain'           => 'core',
			'update_term_meta_cache' => true,
			'meta_query'             => '',
			'meta_key'               => '',
			'meta_value'             => '',
			'meta_type'              => '',
			'meta_compare'           => '',
		);

		if ( ! empty( $query ) ) {
			$this->query( $query );
		}
	}

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Changelog Changelog

Changelog
Version Description
4.9.0 Added 'slug__in' support for 'orderby'.
4.7.0 Introduced 'object_ids' parameter.
4.6.0 Introduced.


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User Contributed Notes User Contributed Notes

  1. Skip to note 1 content
    Contributed by bucketpress

    @jmarceli ,

    If we wanted to limit the query to specific term ids we would use the ‘include’ or ‘exclude’ parameters instead. ‘object_ids’ are useful for cases such as when we want to return terms associated with a set of posts. In such a case we might want to do the following in a taxonomy archive:

    $someposts = get_posts(
    	array(
    		'post_type' => 'custom_post_type',
    		'posts_per_page' => -1,
    		'fields' => 'ids', // return an array of ids
    		'tax_query' => array(
    			array(
    				'taxonomy' => get_query_var('taxonomy'),
    				'field' => 'slug',
    				'terms' => $term_slug = get_queried_object()->slug,
    			)
    		)
    	)
    );
    

    And then call this:

    $somepoststerms = get_terms(
    	array(
    		'taxonomy' => 'custom_tax',
    		'object_ids' = $someposts;
    	)
    );
    

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