/**
* Register our actions and filters
*
* @static
* @return void
*/
public static function init()
{
$options = YMBESEO_Options::get_all();
foreach (self::$social_networks as $option => $network) {
if (true === $options[$option]) {
foreach (self::$social_fields as $box => $type) {
self::$meta_fields['social'][$network . '-' . $box] = array('type' => $type, 'title' => '', 'default_value' => '', 'description' => '');
}
}
}
unset($options, $option, $network, $box, $type);
/**
* Allow add-on plugins to register their meta fields for management by this class
* add_filter() calls must be made before plugins_loaded prio 14
*/
$extra_fields = apply_filters('add_extra_YMBESEO_meta_fields', array());
if (is_array($extra_fields)) {
self::$meta_fields = self::array_merge_recursive_distinct($extra_fields, self::$meta_fields);
}
unset($extra_fields);
$register = function_exists('register_meta');
foreach (self::$meta_fields as $subset => $field_group) {
foreach ($field_group as $key => $field_def) {
if ($field_def['type'] !== 'snippetpreview') {
/**
* Function register_meta() is undocumented and not used by WP internally, wrapped in
* function_exists as a precaution in case they remove it.
*/
if ($register === true) {
register_meta('post', self::$meta_prefix . $key, array(__CLASS__, 'sanitize_post_meta'));
} else {
add_filter('sanitize_post_meta_' . self::$meta_prefix . $key, array(__CLASS__, 'sanitize_post_meta'), 10, 2);
}
// Set the $fields_index property for efficiency.
self::$fields_index[self::$meta_prefix . $key] = array('subset' => $subset, 'key' => $key);
// Set the $defaults property for efficiency.
if (isset($field_def['default_value'])) {
self::$defaults[self::$meta_prefix . $key] = $field_def['default_value'];
} else {
// Meta will always be a string, so let's make the meta meta default also a string.
self::$defaults[self::$meta_prefix . $key] = '';
}
}
}
}
unset($subset, $field_group, $key, $field_def, $register);
add_filter('update_post_metadata', array(__CLASS__, 'remove_meta_if_default'), 10, 5);
add_filter('add_post_metadata', array(__CLASS__, 'dont_save_meta_if_default'), 10, 4);
}
