I'm working on portfolio site, where I need to create a "portfolio" post type and divide posts in it by categories with urls like "/portfolio/category/", so the "category" is the category term.
/portfolio/ - custom post type "portfolio"
/portfolio/category/ - custom taxonomy "portfolio_category", related to "portfolio" type.
/portfolio/post/ - post of the "portfolio" custom post type.
What is the best way to make this url structure?