Documentation for extending the multiple choice single answer XBlock

[Felipe Torres]

Hi,

I've been browsing through the docs but haven't found a clear guide on how I could extend the functionality for the problem component, specifically the multiple choice single answer.

The basic functionality relates to the hint and feedback component but I want to see how it actually works before trying to implement my own problem component.

So my main questions are:

Is there any guide on how to extend the problem/component?

If this component is not an XBlock could someone point out any reference to other component that is an XBlock that deals with similar logic?

Thanks for any help you can provide.

[Colin Fredericks]

Hi, Felipe!

There's no guide for edX development, sadly.

Until very recently multiple choice problems were part of an XModule rather than an XBlock.  You'll find most of the relevant code in /common/lib/capa/capa in the files responsetypes.py and capa_problem.py . If you're running a more recent release, you might want to check out the pull request that made the change: https://github.com/edx/edx-platform/pull/20023

Multiple choice problems are actually quite fancy, with the ability to shuffle responses, create answer pools, give partial credit, etc. You might find drop-down problems (aka "OptionResponse") to be easier to understand if you want to start simple.

Also, you might want to ask this over at the new discussion site! https://discuss.openedx.org/c/development

[Felipe Torres]

Thanks Colin for your response!

I'll take a look to your references, and yes I knew about the discuss site and also posted the issue there (https://discuss.openedx.org/t/extending-the-problem-component/524)

Thanks so much again.

[Juan]

OP here, the closest I could find following Colin's response hints was this https://openedx.atlassian.net/wiki/spaces/AC/pages/128090267/Capa+Problem+Architecture don't know if it is up to day though.