Relative filenames in ibuffer when using projectile

ibuffer-format.el

;; this assumes you have projectile installed already

(define-ibuffer-column project-file
              (:name "🚀Filename")
              (format "%s" (if (and buffer-file-name (projectile-project-root))
                               (dired-replace-in-string (projectile-project-root) "::" (buffer-file-name))
                             (buffer-name))))

            ;; Modify the default ibuffer-formats
            (setq ibuffer-formats
	                '((mark modified read-only locked " "
		                      (name 18 18 :left :elide)
		                      " "
		                      (size-h 9 -1 :right)
		                      " "
		                      (mode 16 16 :left :elide)
		                      " "
                          (project-file 16 -1 :left :elide))))