/**
* This function correctly parses (and optionally formats) a meta value.
*
* @see wpptd_get_post_meta_values()
* @see wpptd_get_post_meta_value()
* @see wpptd_get_term_meta_values()
* @see wpptd_get_term_meta_value()
* @since 0.5.0
* @param mixed $meta_value the meta value to parse (or format)
* @param WPPTD\Components\Field|WPPTD\Components\TermField $field the field component the meta value belongs to
* @param null|boolean $single whether to force arrays or no arrays being returned (default is to not force anything)
* @param boolean $formatted whether to return automatically formatted values, ready for output (default is false)
* @return mixed the parsed (or formatted) meta value
*/
public static function parse_meta_value($meta_value, $field, $single = null, $formatted = false)
{
$_meta_value = $meta_value;
$meta_value = null;
$type_hint = $field->validate_meta_value(null, true);
if (is_array($type_hint)) {
$meta_value = $field->_field->parse($_meta_value, $formatted);
if ($single !== null && $single) {
if (count($meta_value > 0)) {
$meta_value = $meta_value[0];
} else {
$meta_value = null;
}
}
} else {
if (count($_meta_value) > 0) {
$meta_value = $field->_field->parse($_meta_value[0], $formatted);
} else {
$meta_value = $field->_field->parse($field->default, $formatted);
}
if ($single !== null && !$single) {
$meta_value = array($meta_value);
}
}
return $meta_value;
}
/**
* Validates a meta value.
*
* @since 0.6.0
* @param WPPTD\Components\TermField $field field object to validate the meta value for
* @param mixed $meta_value the meta value to validate
* @param mixed $meta_value_old the previous meta value
* @return array an array containing the validated value, a variable possibly containing a WP_Error object and a boolean value whether the meta value has changed
*/
protected function validate_meta_value($field, $meta_value, $meta_value_old)
{
$meta_value = $field->validate_meta_value($meta_value);
$error = false;
$changed = false;
if (is_wp_error($meta_value)) {
$error = $meta_value;
$meta_value = $meta_value_old;
} elseif ($meta_value != $meta_value_old) {
/**
* This action can be used to perform additional steps when the meta value for a specific field of this taxonomy has been updated.
*
* @since 0.6.0
* @param mixed the updated meta value
* @param mixed the previous meta value
*/
do_action('wpptd_update_term_meta_value_' . $this->slug . '_' . $field->slug, $meta_value, $meta_value_old);
$changed = true;
}
return array($meta_value, $error, $changed);
}