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(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_3961' );
function filter_function_name_3961( $value ){
	// filter...

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

Связи хука

Используется в: sanitize_post_field()

Остальные хуки из: sanitize_post_field():

Кусок кода с хуком

Фрагмент из: wp-includes/post.php WP 4.9
...
			 */
			$value = apply_filters( "{$field_no_prefix}_save_pre", $value );
		} else {
			$value = apply_filters( "pre_post_{$field}", $value );

			/**
			 * Filters the value of a specific post field before saving.
			 *
			 * The dynamic portion of the hook name, `$field`, refers to the post
			 * field name.
			 *
			 * @since 2.3.0
			 *
			 * @param mixed $value Value of the post field.
			 */
			$value = apply_filters( "{$field}_pre", $value );
		}
	} else {

		// Use display filters by default.
		if ( $prefixed ) {

			/**
			 * Filters the value of a specific post field for display.
			 *
			 * The dynamic portion of the hook name, `$field`, refers to the post
			 * field name.
			 *
			 * @since 2.3.0
			 *
			 * @param mixed  $value   Value of the prefixed post field.
...