I'm trying to add a column named today in a Model with .extra() , to work on an annotate . I'm not finding. He is not finding the field.
duration = ExpressionWrapper(F('today') - F('pub_date'), output_field=fields.DurationField())
list_posts = posts.extra(select={'today': "now()"}).annotate(duration=duration)
Error
Cannot resolve keyword 'today' into field.
Note It does not get to display in the list of possible fields today or anything like that.