I'm converting my dotfiles to org-babel files because I really enjoyed rewriting my Emacs configuration in it, and I have a function for the init.org that automatically tangles it whenever I save. However, I haven't been successful in making the .org files in say ~/.dotfiles to do the same automatically. I have this function currently:

(defun my/tangle-dotfiles ()
  "If the current file is in '~/.dotfiles', the code blocks are tangled"
  (when (equal (buffer-file-name)
               (expand-file-name "~/.dotfiles/tmux.org"))
    (org-babel-tangle)
    (message "Dotfile tangled")))

(add-hook 'after-save-hook #'my/tangle-dotfiles)

However, this only works for the specific file I name, not for any org file. Using *.org doesn't work either, nor have I figured out how to extract the directory name from both the buffer and directory and do it that way.

I also asked on the #emacs on Freenode but nobody answered me there. Any help or pointer on where to begin would be highly appreciated.