Change Admin Field

    def render_change_form(self, request, context, *args, **kwargs):
        form_instance = context['adminform'].form
        form_instance.fields['betriebsrat_bemerkung'].widget.attrs['placeholder'] = 'Betriebsrat Bemerkung'
        form_instance.fields['betriebsrat_bemerkung'].widget.attrs['size'] = 100
        form_instance.fields['betriebsrat_bemerkung'].label = ''
        return super().render_change_form(request, context, *args, **kwargs)