I've seen at least one Google team member in this forum saying that's the way it is and use string if you want it to be None. That doesn't prevent us, though, from starting an issue:
http://code.google.com/p/googleappengine/issues/detail?id=1117 Star it if you'd like the default behavior to change. -Bill On Mar 2, 8:42 pm, Ian Lewis <ianmle...@gmail.com> wrote: > Bill, > > Agreed. > > But if it's by design then is there a design that says so? like > documentation? Otherwise I might consider it a bug. > > Ian > > > > On Tue, Mar 3, 2009 at 4:34 AM, Bill <billk...@gmail.com> wrote: > > > Ian, > > > This is by design and one of my peeves at the moment. A number of the > > datastore properties will throw an exception when given None values, > > so it makes them useless for storing optional properties. I think I > > ran into the same problem with LinkProperty and EmailProperty. The > > general solution is to just use a StringProperty. You could use a > > "None" marker like "http://nolink"; or "not specified" depending on > > validation of the property, but I find this less appealing. > > > -Bill > > > On Mar 2, 4:22 am, Ian Lewis <ianmle...@gmail.com> wrote: > > > I have a model set up with a LinkProperty which is not required however > > when > > > trying to save the entity with a value of None I get a BadValue error > > saying > > > the Link cannot be empty. Is this by design and/or documented somewhere? > > > > ... > > > class Profile(db.Model): > > > ... > > > homepage = db.LinkProperty(verbose_name=_(u"Homepage > > URL"),required=False) > > > ... > > -- > ======================================= > 株式会社ビープラウド イアン・ルイス > 〒150-0012 > 東京都渋谷区広尾1-11-2アイオス広尾ビル604 > email: ianmle...@beproud.jp > TEL：03-5795-2707 > FAX：03-5795-2708http://www.beproud.jp/ > ======================================= --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
