This event is signaled by act_subscription() in inc/actions.php when receiving a subscribe request, handlers can use it to allow different subscription styles, targets and actions.

The passed Doku_Event object has the fields: $data and $result.

The $data field is an array with the entries:

• $data['target'] – Target page or namespace ID; Namespaces are denoted by a trailing :.
• $data['style'] – Subscription style; core allows 'every' and 'digest' for pages and namespaces, and 'list' for namespaces.
• $data['action'] – Subscription action; core knows subscribe and unsubscribe.

In the BEFORE event handler you can modify the $data field and eventually you can use here preventDefault() to skip execution of DokuWiki's default subscription_handle_post().

The $result field is always null because this event has no default action that sets this field. The AFTER event handler let you process the $data field further after the default processing.

• Code related to this event used in any DokuWiki's files, plugins and templates
• Action Plugins
• Events