New Fabrik Element

[karinep]

Hi everyone,

I would like to know based on which documentation you guys used to create databasejoin element, because I have to create a new one based on databasejoin and when I change the xml code:

<filename plugin="databasejoin">databasejoin.php</filename>

to something like:

<filename plugin="databasejoinplus">databasejoinplus.php</filename>

This error appear in my console:
Fabrik form::addElements: Cannot add element "obra_intelectual___testeoiii" because it does not exist in HTML.
and the element that I created in databasejoinplus.php is not rendered. Could you give me some hints to build a new fabrik element?

Best regards
Karine