Unable to successfully subclass MarkdownModelAdmin

[ironhouzi]

I'm following this tutorial and I've followed the guide exactly. Still I'm unable to get the MarkdownModelAdmin functionality working (MarkdownField for text entry and a preview of the formatted markdown in the admin panel).

There are others who have had the same problem and reported this in the youtube comments. One person suggests changing the TextField to a MarkdownField in the model, but this doesn't really seem like an optimal solution, since the preview functionality doesn't work.

Is this a bug or a feature and if it's a feature, how do I get this working?

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