Moodle Plugins directory: Drag-and-Drop Matching: Comments

Thursday, 5 February 2026, 4:29 PM - Thibault Hermes

Thu, 05 Feb 2026 08:29:26 GMT

by Thibault Hermes.

Hello.
We noticed that the Mathjax filter is not applied properly when showing the answers to a ddmatch question. Is that something you could address?
Thanks

Friday, 17 October 2025, 10:04 PM - DualCube Team

Fri, 17 Oct 2025 14:04:33 GMT

by DualCube Team.

Hello @Dácil Blanco Francisco,

We’re currently working on the “ddmatch” update on our end. Hopefully, we’ll be able to share an update with the fix by next week.

Thursday, 16 October 2025, 9:52 PM - Dácil Blanco Francisco

Thu, 16 Oct 2025 13:52:37 GMT

by Dácil Blanco Francisco.

Hello, I am working with Moodle 4.5.5+. When I try to import or restore a questionnaire, I get the error message ‘Attempt to assign property “subquestions” on false.’
I have updated the plugin to version 2.5.4 (Build: 2025051900).

Debug:

Warning: Undefined array key "plugin_qtype_ddmatch_question" in /moodle/question/type/ddmatch/backup/moodle2/restore_qtype_ddmatch_plugin.class.php on line 92

Warning: Trying to access array offset on null in /moodle/question/type/ddmatch/backup/moodle2/restore_qtype_ddmatch_plugin.class.php on line 92

Warning: Trying to access array offset on null in /moodle/question/type/ddmatch/backup/moodle2/restore_qtype_ddmatch_plugin.class.php on line 92

Warning: Trying to access array offset on null in /moodle/question/type/ddmatch/backup/moodle2/restore_qtype_ddmatch_plugin.class.php on line 92

Exception - Attempt to assign property "subquestions" on false

Código de error: generalexceptionmessage
Ruta del error:

/question/type/ddmatch/questiontype.php línea 46
/lib/questionlib.php líneas 966 y 1028
/backup/util/dbops/restore_dbops_class.php líneas 689 y 520
/backup/util/prechecks/precheck_helper.class.php líneas 95 y 178
/backup/controller/restore_controller.class.php línea 454
/backup/import.php línea 180

Thursday, 11 September 2025, 8:15 PM - Jelle de Roos

Thu, 11 Sep 2025 12:15:21 GMT

by Jelle de Roos.

Hello, thanks for the quick reply. I have tried various sizes, but the box in which they are shown (in the quiz) stays the same size. I found out that if I scaled down to 90 pixels vertically, the image would fit. But then of course the image would be very small. Here is an image I used:

Wednesday, 10 September 2025, 8:15 PM - DualCube Team

Wed, 10 Sep 2025 12:15:14 GMT

by DualCube Team.

Hello Jelle, could you please let us know the size of the image you are uploading? It would also be helpful if you could share one such image so we can test it on our side.

Monday, 8 September 2025, 5:34 PM - Jelle de Roos

Mon, 08 Sep 2025 09:34:56 GMT

by Jelle de Roos.

Hi, if i use a picture in the questions or answers, the picture is displayed only partly. Instead, a scrollbar is introduced.
How can I show the whole picture? Thanks in advance!

Monday, 11 August 2025, 10:29 PM - DualCube Team

Mon, 11 Aug 2025 14:29:01 GMT

by DualCube Team.

Hello Amir, Sorry to hear about the issue you’re facing. We tried to recreate the same scenario on our end but couldn’t replicate it.

Could you please share a short video demonstrating the steps you’re taking? This will help us better understand the situation and get back to you with a solution.

Wednesday, 25 June 2025, 2:22 AM - Terry Aulenbach

Tue, 24 Jun 2025 18:22:06 GMT

by Terry Aulenbach.

In Moodle 4.5, we're getting the following error (repeated dozens of times):

PHP Warning: Trying to access array offset on null in /usr/local/www/moodlexxxx/question/type/ddmatch/questiontype.php on line 173

Friday, 28 March 2025, 9:22 PM - Samuel Fischer

Fri, 28 Mar 2025 13:22:20 GMT

by Samuel Fischer.

thanks for the quick reply, appreciate it.

Friday, 28 March 2025, 9:00 PM - DualCube Team

Fri, 28 Mar 2025 13:00:13 GMT

by DualCube Team.

Samuel, Thank you for reaching out! We’re already aware of the issue with MDL-83541, and our team will begin working on a fix soon. We appreciate your patience and will keep you updated

Friday, 28 March 2025, 8:07 PM - Samuel Fischer

Fri, 28 Mar 2025 12:07:56 GMT

by Samuel Fischer.

Hi! Will there be a new version available for Moodle 4.4.7 / 5.X which fixes MDL-83541 ?

Monday, 24 February 2025, 6:38 PM - Владимир Фюрст

Mon, 24 Feb 2025 10:38:52 GMT

by Владимир Фюрст.

Hello! I am creating a test using your plugin. When I create a drag-and-drop matching test, 3 fields open for me to fill in the values. I can click the "Add 3 questions" button, then I get 6 fields for answers. How can I make it so that when I create a new test element, 6 fields open at once, not 3? So that I don't have to click the "Add 3 questions" button.

Sorry if my English is not very clear.

Thursday, 20 February 2025, 1:41 PM - DualCube Team

Thu, 20 Feb 2025 05:41:28 GMT

by DualCube Team.

Thank you for reaching out! I'd be happy to assist you with your query. However, I’d like to get a bit more clarity on your request.

Could you please provide more details about the task creation process you are referring to? Specifically, can you describe where these answer fields appear and their intended use?

This will help me understand the situation better and provide you with the most accurate solution.

Looking forward to your response.

Tuesday, 18 February 2025, 10:18 PM - Владимир Фюрст

Tue, 18 Feb 2025 14:18:52 GMT

by Владимир Фюрст.

Hello! How can I make it so that when creating a task, 6 answer fields open by default instead of 3?

Wednesday, 18 September 2024, 8:19 PM - DualCube Team

Wed, 18 Sep 2024 12:19:53 GMT

by DualCube Team.

Hi Juan, please download and use the latest version of the DD Match plugin from GitHub at this link: https://github.com/dualcube/moodle-qtype_ddmatch, and check again whether the issue has been fixed.