User related debugmode

Admin tools ::: tool_userdebug
Maintained by Andreas Grabs
With this plugin you can define the debugmode for only some selected users.
Latest release:
115 sites
7 fans
Current versions available: 1

Admin tool “User related debugmode”


If you want to activate the debugging mode for some users on your system, the setting of $CFG->debugusers isn’t the best solution. You have to edit the config.php which allways is a risk to break you system. Also with this setting you only change the behaviour of the function debugging(). But if the debugging setting is turned of you’ll never see the debug messages.
Why do I need this?
If you adminstrate some productive systems sometimes you have a situation to need to turn on the debugging mode. But if you do this on a productive system, all users will see the debugging messages. In most cases it isn’t what you want.
So with this plugin you can turn on the debugging mode just for you or some selected users.

Here are the main features of this plugin:

  • You can do all settings on the interface. There is no need to edit the config.php.
  • You can turn on the full set of debugging features for defined users. This means you can leave the moodle standard debug setting to “None”.
  • You can turn on the debuggin mode just for the current session (ad hoc debugging). So you don’t need to turn it off after usage.


  1. Copy this plugin into the folder admin/tool inside your moodle installation.
  2. Go to the Site administration -> Notifications to start the install process.


After the installation you will find the new link User related debugmode below Site administration -> Development
The Ad hoc debugmode you can turn on in your profile settings or in the frontpage menu.


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Andreas Grabs (Lead maintainer)
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  • MD shot of me from his iphone4
    Mon, Oct 8, 2012, 12:05 PM was created for this case. Feel free to contribute any discussion or patch there smile
  • Germán and Temudgin
    Tue, Oct 16, 2012, 2:29 AM
    This user_related_debugmodus plugin is great. I also think this plugin should go into Moodle core. It will help admins while it does not unnecessarily disturb regular users in a production environment. I only wished I had seen it before.

    Maybe the plugin developer-maintainer could send an Email to Martin at Moodle HQ or/and to Moodle developers, or post a suggestion in Moodle Tracker.
  • Mon, Oct 1, 2018, 5:23 PM
    This really amazing plugin that I was looking from many others tools but it's need to updates more by clicking on website for useful task. Thank you
  • Fri, May 17, 2019, 9:45 PM
    When I put require_once($CFG->dirroot.'/admin/tool/userdebug/lib.php'); Moodle crashes. When I change even one symbol it doesn't crash but obviously, the plugin doesn't work.
    I use Moodle for my team of writers at
  • Fri, May 17, 2019, 11:32 PM
    Hi Ryley, thanks for trying out this plugin. The require_once line has to be appended after the line with require_once(__DIR__ . '/lib/setup.php');
    --- config.php ---
    require_once(__DIR__ . '/lib/setup.php');

  • Sun, Aug 2, 2020, 3:56 AM
    Hi at all, please note there is no need anymore to modify the config.php. So you can use this plugin just with a regular installation.
    Thanks for trying.
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