[TYPO3-mvc] Displaying and modifying session data on same page

[Jan Kornblum]

Hi again,

> thanks for your explanations. Although my solution seems to be o.k. for this 
> case, i'm interested in how to realize this using a hook. This seems more 
> comfortable (e.g. extension distribution) than having to include any hidden 
> plugins or similar.
>
> As i've never used any hook, how does this work? Which hook should i used 
> preferred and is it possible to call any controller action directly from 
> this? How to get from a hook into the extbase context?

I've just read about the signal slot pattern is supported by extbase. 
This seems to be more recommended than using a hook. But, would it 
work? Which "place" or signal is offered by the system?

Regards, Jan