XF 2.1 xf_navigation db table - new column - show navigation items based on it

[Scandal]

I added a new column on db table where the public navigation is being saved (xf_navigation).

Is there any way to show on public site only navigations based on the value of that new column?

Lets say that column "section".

What class do I have to extend and with what way, to achieve it?
The problem is that the public navigation is saved on a cached. It is not fetched via a finder / query, so the extend of a Repository is not the solution.

Any idea?

 

[Scandal]

I used the "Display condition" existing field of xF2 instead, that exists in Navigation Edit page form, and all ok