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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 873 | /** |
| 874 | * Filters the query_vars used in get_items() for the constructed query. |
| 875 | * |
| 876 | * The dynamic portion of the hook name, `$key`, refers to the query_var key. |
| 877 | * |
| 878 | * @since 4.7.0 |
| 879 | * |
| 880 | * @param string $value The query_var value. |
| 881 | */ |
| 882 | $query_args[ $key ] = apply_filters( "rest_query_var-{$key}", $value ); |
| 883 | } |
| 884 | |
| 885 | if ( 'post' !== $this->post_type || ! isset( $query_args['ignore_sticky_posts'] ) ) { |
| 886 | $query_args['ignore_sticky_posts'] = true; |
| 887 | } |
| 888 | |
| 889 | // Map to proper WP_Query orderby param. |
| 890 | if ( isset( $query_args['orderby'] ) && isset( $request['orderby'] ) ) { |
| 891 | $orderby_mappings = array( |