Fix error message display when CSV export fails [MNG-2273]

open-craft / xblock-poll

An XBlock for Polling users and displaying the result

GNU Affero General Public License v3.0

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Fix error message display when CSV export fails [MNG-2273] #92

Closed bradenmacdonald closed 3 years ago

bradenmacdonald commented 3 years ago

If the "Export to CSV" button fails to launch a task, it currently doesn't display the error message properly. Instead, an error message can only be seen in the browser console, which just says error is undefined.

This fixes the code so that the actual error message will be displayed:

See https://openedx.atlassian.net/browse/TNL-8370 and https://github.com/edx/edx-platform/pull/28019 for more information about this issue.

alfredchavez commented 3 years ago

:+1:

[x] I have tested it with some custom examples to probe it does not break in both cases of error(last_export_result)
[x] I read through the code