Configure Open Response Assessment

Adding ORA component to a Unit

ORA is enabled in Koa by default.

1. Go to the specific unit > Click Problem > Click Advanced > Open Response Assessment.
2. Now edit the component > Click Settings > File Uploads Response > Set to ‘Required’.
3. Now upload file either in LMS or CMS, it will throw error.

For this error to resolve, you need to implement Storage Back-end mechanism (i.e S3, local filesystem etc). Here in this tutorial, we will walkthrough the configuration need to implement local filesystem back-end and storage.

Configuring Local FileSystem Back-end and Storage

1. Make a new directory.

   mkdir /edx/var/edxapp/media/ora_uploads
   sudo chown www-data:edxapp /edx/var/edxapp/media/ora_uploads   # Change ownership
   

2. Open files lms.yml and studio.yml on your favourite editor (eg: nano) and add/configure some settings.

   ORA2_FILEUPLOAD_BACKEND: filesystem
   ORA2_FILEUPLOAD_CACHE_NAME: ora2-storage
   ORA2_FILEUPLOAD_ROOT: /edx/var/edxapp/media/ora_uploads
   

   # Add this to CACHE key
   ora2-storage:
       BACKEND: django.core.cache.backends.memcached.MemcachedCache
       KEY_FUNCTION: util.memcache.safe_key
       LOCATION:
       - localhost:11211
   
   

3. Restart the LMS and Studio for the changes to take effect.

   sudo /edx/bin/supervisorctl restart lms cms