ManifestVersion.all() returns a Query object. You must get or fetch them before you can use the objects
def incrementVersion(): versionList = ManifestVersion.all().get() versionList.versionNumber += 1 versionList.put() return versionList.versionNumber Execute this type of functions in a transaction. Look at the shared counter article. 2009/3/15 Marcelo Sena <marceloslace...@gmail.com>: > > Here is the model I'm trying to update: > > class ManifestVersion(db.Model): > versionNumber = db.IntegerProperty() > > Here is the method that should change the only instance of the > previous model: > > def incrementVersion(): > versionList = ManifestVersion.all() > num = versionList[0].versionNumber > num = num+1 > versionList[0].versionNumber = num > versionList[0].put() > return versionList[0].versionNumber > > But the versionNumber value is never updated and this function always > returns 1. On the other hand num is changed in this call. > What am I doing wrong? > > > --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
