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filter is not described

get_(adjacent)_post_join filter-hook . WP 2.5.0

Filters the JOIN clause in the SQL for an adjacent post query.

The dynamic portion of the hook name, $adjacent, refers to the type of adjacency, 'next' or 'previous'.

Usage

add_filter( 'get_(adjacent)_post_join', 'filter_function_name_7655', 10, 5 );
function filter_function_name_7655( $join, $in_same_term, $excluded_terms, $taxonomy, $post ){
	// filter...

	return $join;
}
$join(string)
The JOIN clause in the SQL.
$in_same_term(true/false)
Whether post should be in a same taxonomy term.
$excluded_terms(array)
Array of excluded term IDs.
$taxonomy(string)
Taxonomy. Used to identify the term used when $in_same_term is true.
$post(WP_Post)
WP_Post object.

Notes

  • Since 4.4.0 Added the $taxonomy and $post parameters.

Where the hook is called

get_adjacent_post()
wp-includes/link-template.php 1699
$join = apply_filters( "get_{$adjacent}_post_join", $join, $in_same_term, $excluded_terms, $taxonomy, $post );

Where the hook is used (in WP core)

Does not used.