Turnitin plagiarism plugin

Plagiarism ::: plagiarism_turnitin
Maintained by John McGettrick, Paul Dawson, David Winn, Lottie Byrne
Turnitin is an academic integrity solution, designed to integrate seamlessly with existing Moodle Assignments, forums, and workshops. A Turnitin license is required for use.
Latest release:
1940 sites
69 fans
Current versions available: 1

This connection path to Turnitin has a number of major benefits:

  • Fully supported by Turnitin for all issues that might happen

  • Uses a robust API to connect directly to Turnitin

  • Support for all of Turnitin’s functionality


This plugin is part of set Turnitin.


Screenshot #0
Screenshot #1


John McGettrick (Lead maintainer)
Dan Marsden: Previous plugin maintainer
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  • Tue, Sep 29, 2020, 9:41 PM
    SELECT pathnamehash FROM mdl_files WHERE component = 'assignsubmission_file' AND itemid = '1505368' AND source IS NOT null ORDER BY id DESC
    lib.php private function update_grade($cm, $submission, $userid)
    public function clean_old_turnitin_submissions($cm, $userid, $itemid, $submissiontype, $identifier)

    both above functions include a query which under MySQL 5.7 run for more than 40 seconds each time. Both can be found as they include the term :
    "AND source IS NOT null".
    Explain output
    1 SIMPLE mdl_files ref mdl_file_comfilconite_ix mdl_file_comfilconite_ix 302 const 1063994 Using index condition; Using where; Using filesort
  • Tue, Sep 29, 2020, 9:43 PM
    I forgot to add $plugin->version = 2019121701;
    commit 74f979a9
  • Mon, Nov 2, 2020, 4:10 PM
    My Turnitin worked normally on my moodle instance. However, today, whenever I create a new activity for Turnitin there is an error
    Turnitin Error
    Sorry, we could not process your request.
    The resource_link_id provided is already mapped to a different context_id. Please contact "..." to resolve.

    Those activity created before today still working normally. Could anyone tell me how to fix this?
  • Mon, Nov 2, 2020, 5:49 PM
    This sounds like an LTI issue, it sounds like you've used LTI through Moodle with your Turnitin account previously. This is a known issue so you'll need to create a new sub account, then everything should work fine.
  • Thu, Nov 5, 2020, 6:09 PM
    Hi, In a Moodle assignment with the Turnitin plagiarism plugin, the first plagiarism report you click on opens in a new tab. If you return to Moodle assignment and click a different plagiarism report, the tab remains on the first student and does not load the second report. Is there anyway the Turnitin report could update based on the report you click on in Moodle?
    This is the behaviour on: Moodle 3.7.3, Turnitin plagiarism plugin 3.1+ (2019062501), for Firefox 72.0.1 and Chrome 79.0.3945.117.

  • Fri, Nov 6, 2020, 7:13 PM
    Hi there,

    My name is Frances and I'm a lecturer at the University of Zululand in South Africa. Some of my students are only able to access Moodle on their smart phones and tablets (they don't all have laptops). My colleagues and I have figured out how to connect our submission links on Moodle to classes in Turnitin. BUT, a new problem has cropped up: when students try to submit their assignments on Moodle, the Turnitin End User Licence pops up onto their screen in a way that prevents them from being able to see the box for them to click and agree and move on. This prevents them from submitting their assignments. Is there any way to get around this issue? Would downloading an App with a different browser work? Please help. I'm stumped. Thank you
  • Ray at his desk
    Mon, Nov 30, 2020, 11:56 PM
    Frances, I am not a developer, but I was browsing this page and had a couple ideas that might temporarily get around your issue.

    The students could try forcing their mobile to load the desktop version of the site. That might make it easier to find the EULA buttons (but they would probably want to disable the desktop view afterwards, since it might not be a good mobile experience for other Moodle tasks). Something like this, although this page is from 2012: https://www.cnet.com/how-to/how-to-request-desktop-version-of-a-web-site-in-chrome-for-android/

    If you are using a custom theme, you could also try disabling that temporarily.
  • Fri, Dec 11, 2020, 5:42 PM
    Hello, what does 'Refresh submissions' do under the Plagiarism plugin settings? Couldn't find this documented anywhere.
  • Wed, Jan 20, 2021, 7:37 PM
    Hi - a teacher has made us aware of the following: when a student removes their assignment submission, the file is removed from moodle, but the version of the file in TurnitIn persists and is accessible to the teacher. So a teacher might mark a submission that has actually been removed. I've explained more in this bug post: https://github.com/turnitin/moodle-plagiarism_turnitin/issues/569. Has anyone else come across this?
  • Fri, Jan 22, 2021, 8:49 AM
    Does anyone know why this plugin is not listed as supporting Moodle 3.7? The Turnitin Direct v2 block of the same version does support 3.7, so I'm just curious if I'm going to run into issues by forcing the install in our 3.7 environment.
  • Fri, Jan 22, 2021, 8:57 AM
    Probably because Moodle 3.7 isn't officially supported by Moodle either and so isn't tested or supported by Turnitin either, IMO you should be spending time upgrading to a supported Moodle release before trying to update individual plugins - (if it works in 3.5 and 3.8 it might be ok in 3.7 but "at your own risk")
  • Fri, Jan 22, 2021, 5:25 PM
    Hey Bobby, yes what Dan has mentioned is correct. We stay in line with what moodle supports at the time of release, 3.7 is no longer supported by moodle so we do not test against this. You can install on that version but please be aware that if you do happen to run into any bugs or features not working correctly, the first step of trouble shooting is to upgrade to a supported version. smile
  • Tue, Apr 6, 2021, 2:44 AM
    Hello all,
    We are getting an error all of a sudden of cannot read from database when update_scores scheduled task is running (the error is produced from manual cron run results)
  • Fri, May 28, 2021, 9:33 AM
    Hi all, There is an error prompt after the student submit the Moodle Assignment.

    'Rubrics error argument 2 passed to has_capability() must be an instance of context, /plagiarism/turnitin/ajax.php on line 163'

    I am using this latest version 2020113001 and moodle 3.5
    How to resolve this?
  • Tue, Jun 1, 2021, 9:09 PM
    This has been fixed, we'll be releasing a new plugin in the next few weeks.
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