How to programmatically change theme in OctoberCMS?

Question

I can change the active theme from the management dashboard in OctoberCMS by going to Settings/Front-end theme. Now I want to give the end-users the ability to change the theme by clicking on an icon. How can I change the theme programatically on the server side? I could not find the relevant code in the documents.

Answer 1

CLI command of enabling some theme is:

php artisan theme:use rainlab-vanilla

It means that you can call php code something like that:

Artisan::call('theme:use', ['rainlab-vanilla'])