Try use db.Expando instead of db.Model, that'll all you to add fields without defining them first.
On Mar 4, 9:45 pm, li jinyu <disorder...@gmail.com> wrote: > 2009/3/4 Doug <doug...@gmail.com> > > > > > I am also pretty green with GAE, but I think that the db Model Event > > and the db model event are 2 different db models. > > > If they are 2 different models this would be why you are always > > getting none when you read from it. You would be able to see if you > > have 2 in the console. > > OK, I'll check that. Thanks. > > > > > BTW - What is "None"? I do not see that as a db Model option in the > > Google doc. It looks to me like you would want those to be strings. > > In fact, I don't want to create columns for color and status, so I use None > > > > > > > Doug > > > On Mar 3, 10:32 pm, disorderdev <disorder...@gmail.com> wrote: > > > Hi, I'm a newbie here, both python and app engine. a few questions: > > > I store some fields in DB, but when show message on Web, I need more > > > fields, most of them are calculated according to fields in DB, For now > > > I don't want to do the calculating on web, but when I add some fields > > > to the DB model class, the web dose not recognize them, all values are > > > None, what should I do? > > > > For example, I have a class > > > class Event(db.Model) : > > > owner = db.UserProperty() > > > title = db.StringProperty() > > > content = db.StringProperty(multiline = True) > > > status = None > > > color = None > > > > when showing events on web, I want 'color' and 'status', so after > > > retrieve the data from DB, I do the following: > > > > for event in events : > > > logger.info(event.status) > > > logger.info(event.color); > > > event.create_time = datetime.now() > > > event.status = "Finished" > > > event.color = "green" > > > > but on web, they are still None. > > > > BTW: I have to add status and color in class, or these fields are not > > > recognized. > > -- > Don't schedule every day, make them disorder. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appengine@googlegroups.com To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~----------~----~----~----~------~----~------~--~---
