Have `projectile-find-file` fall back to `ido-find-file` outside of projects

Question

How can I bind C-x C-f to invoke projectile-find-file when inside a project, and ido-find-file when not in a project?

Answer 1

Write your own command that checks:

(defun maybe-projectile-find-file ()
  (interactive)
  (call-interactively
   (if (projectile-project-p)
       #'projectile-find-file
       #'ido-find-file)))

(global-set-key (kbd "C-x C-f") 'maybe-projectile-find-file)