Here's where old good relational databases theory comes in. How will I do it: Create a model ``Tags'': class Tags(db.Model): tag_name = db.StringProperty() Create a model ``Items'': class Items(db.Model): item_name = db.StringProperty() And create a model ``ItemTags'' class ItemTags(db.model): tag = db.ReferenceProperty(Tags) item = db.ReferenceProperty(Items)
So when you need to get items for some tags you first query the ``ItemTags'' for items with concrete tag(s) thgan by key you get Items. Cheers, Serhiy On Jan 24, 3:17 am, George Sudarkoff <sudark...@gmail.com> wrote: > I have a bit of a problem coming up with an efficient data model/algo > for a project I am working on: > > I have a few hundred items, each tagged with zero or more tags. I need > to be able to fetch items that, for example, are tagged with tag1 AND > (tag2 OR tag3) AND NOT tag4. > > Any help would be greatly appreciated! --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
