Thing is the timeout. I manage inconsistencies from this start. Also check appengine admin which catches bad references. http://code.google.com/p/appengine-admin/
http://dpaste.com/hold/99361/ class ImagePage(webapp.RequestHandler): def get(self): if users.is_current_user_admin(): if self.request.get('h'): from datetime import datetime, timedelta then = datetime.now () - timedelta (hours = int (self.request.get('h'))) query = db.GqlQuery("SELECT * FROM Image where added > :1 ORDER BY added desc", then) else: query = db.GqlQuery("SELECT * FROM Image ORDER BY added desc limit "+self.request.get('limit')+" offset "+self.request.get ('offset')) count = query.count() self.response.out.write(str(count)+'<table border ="1">') for image in query: self.response.out.write('<tr><td><a href="/admin/Image/ edit/%s/"><img src="/gallery/%s' % (image.key(), image.key ())) self.response.out.write('.'+image.thumb_ext+'"></a>') try: self.response.out.write('</td><td><a href="/%d/url">' % image.reference.key().id ()) self.response.out.write('%s</a>' % image.reference.url+'<br/ >'+image.reference.title) self.response.out.write('</td><td> %s ' % image.reference.added) self.response.out.write('</td><td>ad published? %s ' % image.reference.published) self.response.out.write('</td><td>image published? %s ' % image.published) self.response.out.write('</td><td><a href="/edit?id= %d">Edit ad</a> - ' % image.reference.key().id ()) self.response.out.write('</td></tr>') except: self.response.out.write('no reference') self.response.out.write('</table><br/>') nextoffset = int(self.request.get('offset')) + int (self.request.get('limit')) self.response.out.write('<a href="/images.html? limit='+self.request.get('limit')+'&offset='+ str(nextoffset) + '">next</a>') On Dec 14, 10:47 pm, James <thelevybre...@gmail.com> wrote: > Most of the time, the errors you get from your model properties will > happen when you're saving data. For instance, if you try saving a > string as an IntegerProperty, that will result in an error. > > The one exception (no pun intended) is ReferenceProperty. If you have > lots of references and you're not completely careful about leaving in > bad references, it's common to be greeted with an error like > "TemplateSyntaxError: Caught an exception while rendering: > ReferenceProperty failed to be resolved". > > And this is if there's only one bad reference in the view. D'oh. > > I could write a try/except block to try to access all the reference > properties and delete them if an exception is raised, but this > functionality could surely be useful to many other developers if there > was a more generic method than the one I'd be capable of writing. I > imagine it would take a list of model types and try to access each > reference property of each entity in each model, setting the property > to None if an exception is raised. > > I'll see if I can do this myself, but it would definitely help to have > some suggestions/snippets to get me started. --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
