Custom code editor in Django admin
Example in this post will demonstrate how to add CodeMirror, a text editor implemented in Javascript, to the Django Textarea form widget by extending the class django.forms.Textarea. Modified widget will be used as an example in Django Admin, but it can be easily ported to any Django form. CodeMirror editor implemented below is set to a HTML/Javascript mode. To support other languages/modes check the CodeMirror documentation.