What do you need to use the hack? Actually, you only need a working phpWebSite installation. Installing it is also very easy. Just download this already patched version of it and boost it in like every other module.

It will create a table called mod_calendar_trans where it can put “translations” of the category names.

As soon as you've installed the patched calendar module, you'll see something you aren't used to from other versions. Enter the Calendar and notice the line reading “Master”. Below it, you should read “apply filter”

To filter categories, you click that apply filter link. The hacked Calendar module will show you all categories in fatcat together with a checkbox. If all or no categories are selected, it will revert to “Master”, which includes all categories.

If you've chosen only one category, it will show that instead of “Master” together with “change filter”. If you've chosen more categories, but not all, they will show below the first one as “Including also”.

“if you have the rights to change settings, you will find a new link “map category names...” there. It will show every category together with a (probably) empty textbox next to it.

In case you wouldn't want the calendar to show the categories the way they are entered in fatcat, you can change them here. This mapping only works in the calendar module.

After entering all the translations you want to have, you click “go”. As there is no caching whatsoever, this change will be immediately visible to all current sessions after the next page load.

To override the user selection and to get informations at a glance, a webadministrator can use certain urls.

./index.php?module=calendar&show_cat shows you all entries of the calendar, together with their category as seen to the hack and the corresponding category translation

./index.php?module=calendar&cat_select=1,2,3 will set the current filter to filter the fatcat-categories 1, 2 and 3. Any applied user-filter will be reset.

./index.php?module=calendar&cat_select=all will reset the current filter. The calendar module shows the “Master” category, which includes all the calendar items.