@havvg That is what I said in the comment https://github.com/propelorm/Propel2/pull/414#discussion_r4640173 . I can create my own filter in which I can have a query to db and check whether the username already exists.

But I thought of using the built in behaviour . I guess probably everyone is thinking from a different angle than what I was asking.

And I am new to propel, so I don't really know where this method should lie. @cristianoc72 made it quickly to tackle it. I am okey with where ever the method lies. I only need a way to get it as an array if it can else no issues.