Multisite Theme Usage Report

[Demonhood]

On the Network Admin for WP Multisites, the list that displays all the available themes shows a limited amount of information. For those who have a lot of sites in their install, knowing which of these were in use (both parent and child) on active sites would be very helpful. So in addition to the Name, Version, etc., it would also have "5 Active Sites" or "Parent to 104 Active Sites" or "Unused". This would be great for cutting out the cruft and for giving me pause when it's time to update a theme that is being used on a great number of sites.
I suppose the same thing could be applied to plugins as well.

[kpdesign]

Hi @Demonhood, welcome to Trac and thanks for the suggestion!

There are a couple plugins that have similar features:

• ​Multisite Administration Tools - works for themes and plugins listing pages; adds themes/plugins columns to Sites list in Network admin.
• ​WordPress Multisite Theme Stats - works for themes only

Have you tried either of these?

[Demonhood]

I hadn't. I've tested them out now, and while they work, to an extent, it's not quite what I think most multisite superadmins would expect. Beyond the fact that both plugins haven't been updated in 1+ years, they don't distinguish between child and parent themes. So a parent theme shows up as unused, which is obviously a problem.

[Mista-Flo]

Interesting idea, but maybe dangerous for performances if we have to loop through a lot of sites.

[jeremyfelt]

I think this is an interesting idea and something that we may be able to realize in the future. At this time, the way that the data tracking active themes is stored does not really support a performant way to maintain and display this. I think there's a chance that #37923 will help make this more feasible, especially for experimentation in plugins.

I'm going to close this as a maybe later, we can always revisit in the future.