I'm designing a schema. I'd like to insert a select/dropdown, which lists all the schemas in the current publication. (Could be limited to public-content schemas I guess)
I have the same question about categories: I'd like a select/dropdown which lists all categories.
A "navigation builder". We would have a "navigation" component. Inside, the content editor can select a category and one or more schemas, and the CM will deliver a list of components using that schema which are tagged with any keyword from that category, such that the website can build a navigation menu.
From looking at the Tridion UI, and searching here on Stack Exchange, I assume this is not possible - but I'd like confirmation.