Hi Valerio, on my desperate search for a possibility to find out whether a file is in a category or not, I saw finally that you developed exactly what I need. But I understand that it can't be used (in commons) ??
And there is no possibility, neither with templates nor with Lua, to get this information? I would be glad if you could somehow help me. Kind regards, ~~~~
My friend, yep, the Extension:CategoryToolbox would be our solution. Do you have some time to start a discussion on their bar? It would be nice to explain your need and explain that this extension fit your needs and that I can give assistance in replying any technical question about that extension, and apply any requested improvement.
Thank you for your kind answer. Yes, it will solve a special need of me.
I did not understand, where shall I start a discussion?
I tried to prove your tool, but my knowlegde how to use Lua extensions is too poor,
I think a good starting place may be c:Commons:Bar. But... to prove that tool you actually need a private MediaWiki instance. If you already have one, try importing these few templates:
https://github.com/valerio-bozzolan/CategoryToolbox/tree/master/examples
private MediaWiki instance ? Sounds complicated, especially because I have practically no experience with Mediawiki. May be I better wait until your tools are available in "normal" Lua libraries, may be rated as α or whatsever. Do you think that will be in some time?
Apologies, I though you was a developer looking for a demo.
Anyway, once installed in a wiki, you will be able to use it like this:
{{#if:{{CategoryHasPage|CategoryName}}| do something | do not something }}
So it's very simple :) The Lua is under the hood.