It's easy to make an item read-only based on a predefined Authorization Scheme.

1 - Edit the item and click on the "Read Only" tab

2 - Select "PL/SQL Function Body Returning a Boolean"

3 - Insert the following PL/SQL code into the condition box :

if APEX_UTIL.PUBLIC_CHECK_AUTHORIZATION('MY_AUTH_SCHEME') then

  return false;

else

  return true;

end if;

Where "MY_AUTH_SCHEME" is the name of your Authorization Scheme.




Authorization (authorisation) schemes can be defined on the "Authorization Schemes" page under "Shared Components".