org-heading Properties Get/Set in org-babel Header

Question

I can get a property like this

:PROPERTIES:
:PRJ-DIR: ~/projects
:END:

#+begin_src shell :var x=(org-entry-get (point) "PRJ-DIR") :tangle no
echo Variable x has the value $x
#+end_src

, but can it be written to?;)

Answer 1

Yes, you can use org-entry-put to do that:

* foo
:PROPERTIES:
:PRJ-DIR:  /tmp
:END:

#+begin_src shell :var x=(org-entry-get (point) "PRJ-DIR") :tangle no
echo Variable x has the value $x
#+end_src

#+RESULTS:
: Variable x has the value ~/projects

#+begin_src elisp
(org-entry-put nil "PRJ-DIR" "/tmp")
#+end_src

#+RESULTS:

The value of PRJ-DIR is changed when you C-c C-c on the last source code block.

Note the similarities between org-entry-get and org-entry-put and do C-h f org-entry-put for more details.