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фильтр не описан

(field)_pre хук-фильтр . WP 2.3.0

Filters the value of a specific post field before saving.

The dynamic portion of the hook name, $field, refers to the post field name.

Использование

add_filter( '(field)_pre', 'filter_function_name_2726' );
function filter_function_name_2726( $value ){
	// filter...

	return $value;
}
$value(смешанный)
Value of the post field.

Где вызывается хук

sanitize_post_field()
wp-includes/post.php 2233
$value = apply_filters( "{$field}_pre", $value );

Где используется хук (в ядре WP)

wp-includes/default-filters.php 250
add_filter( 'title_save_pre', 'trim' );
wp-includes/kses.php 1704
add_filter('title_save_pre', 'wp_filter_kses');
wp-includes/kses.php 1713
add_filter('content_save_pre', 'wp_filter_post_kses');
wp-includes/kses.php 1714
add_filter('excerpt_save_pre', 'wp_filter_post_kses');
wp-includes/kses.php 1715
add_filter('content_filtered_save_pre', 'wp_filter_post_kses');
wp-includes/kses.php 1732
remove_filter('title_save_pre', 'wp_filter_kses');
wp-includes/kses.php 1739
remove_filter('content_save_pre', 'wp_filter_post_kses');
wp-includes/kses.php 1740
remove_filter('excerpt_save_pre', 'wp_filter_post_kses');
wp-includes/kses.php 1741
remove_filter('content_filtered_save_pre', 'wp_filter_post_kses');