Data Modelling Advice for Blog Tagging system on Google App Engine

Question

Am wondering if anyone might provide some conceptual advice on an efficient way to build a data model to accomplish the simple system described below. Am somewhat new to th

Answer 1

One possible way is with Expando, where you'd add a tag like:

setattr(entity, 'tag_'+tag_name, True)

Then you could query all the entities with a tag like:

def get_all_with_tag(model_class, tag):
    return model_class.all().filter('tag_%s =' % tag, True)

Of course you have to clean up your tags to be proper Python identifiers. I haven't tried this, so I'm not sure if it's really a good solution.