rest_query_var-(key) filter-hook . WP 1.0

This filter is documented in wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php

Usage

add_filter( 'rest_query_var-(key)', 'filter_function_name_2676' );
function filter_function_name_2676( $value ){
	// filter...

	return $value;
}

$value

-

Where the hook is called

$query_args[ $key ] = apply_filters( "rest_query_var-{$key}", $value ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores

$query_args[ $key ] = apply_filters( "rest_query_var-{$key}", $value ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores

Where in WP core the hook is used WordPress