Knowing very little about Twig or Grav (although I did a lot with Symfony some time ago), it is not clear where the controllers are for some things. I can see the more obvious controllers, like system/src/Grav/Common/Page/Page.php, but, for example, I do not know what is being called for the sidebar. The plugin only has a js in it, but somewhere something is calling the ‘database’ to get a list.
When I look in the twig I see, for example “content”, which is obviously the content object sent pack from Grav\Common\Page::controller, but it is not clear where “related_path” comes from when used in relatedpages.html.twig ( {% for related_path, score in related_pages %} ).
Can someone point me to the docs that explain this, or better yet, the entire request/response cycle and the various places/steps it goes thru?
Thanks