KeyError in gfk.py

[maximegaillard]

When using model_stream(Model) in views I get this error :

Exception Type: KeyError Exception Value: (15L, u'1') Exception Location: site-packages/actstream/gfk.py in fetch_generic_relations, line 79

This Model works with follow() and unfollow()

[justquick]

i need a lot more info about this bug as I cannot recreate it

• what db are you using?
• what version of python and django are you running?
• are you using the sites framework?
• are you upgrading from an older version of django-activity-stream?
• how are you making this Model?
• what is the problem view doing?

any example source code and a dump of the actstream app would be helpful.

[maximegaillard]

• I'm using Mysql (with gis because of GeoDjango). Configured with utf8_swedish_ci
• Python 2.6 and Django 1.3.1
• I'm not using the sites framework
• It's a new install, I'm using the lastest release.

The code example :

In my settings.py:

ACTSTREAM_ACTION_MODELS = ['auth.User']

My function to follow a stuff:

def followUser(request, userId):
    if not is_following_check(request.user, "user", userId):
        to_follow = User.objects.get(id=userId)
        follow(request.user, to_follow)

        return HttpResponse("success")
    else:
        return HttpResponse("error")

def is_following_check(user, who, whoId):

    if who == "user":

        to_check = User.objects.get(id=whoId)
        if is_following(user, to_check):
            return True
        else:
            return False

    else:
        return False

My function to get the stream :

def userStream(userId):
    user = User.objects.get(id=userId)
    user_activities = model_stream(user)

    return user_activities

And in the admin, I can see all the activities without any problem.

I found a "hack" to make it works in my dev environnement. In gfk.py, lines 70+:

for item in qs:
            for gfk in gfk_fields:
                if getattr(item, gfk.fk_field) != None:
                    ct_id_field = self.model._meta.get_field(gfk.ct_field).column
                    try:
                        setattr(item, gfk.name, data_map[(getattr(item, ct_id_field),
                                                            getattr(item, gfk.fk_field))])
                    except:
                        print "error gfk"
                        pass
        return qs

[justquick]

im not sure that just printing the error and ignoring that item is a good idea since this is a classic failure case. maybe resetting the actstream db might help if you can afford to do it? im also noticing in your example that you are using model_stream but you should probably be using user_stream. also in followUser you do not check to see whether the user is logged in. this might have something to do with it but i am going to make this problematic corner case a bit more obvious in a future release. im sorry but i cannot be of much more help because i do not have your setup in front of me to see what's happening.

[justquick]

it's a weird error ive just recently run into. there's a problem with your project setup. here are some tips which should help

• Make sure ALL models you want actionable are in ACTSTREAM_ACTION_MODELS (be generous)
• Make sure all the apps for those models are in INSTALLED_APPS
• If all else fails go into each model and run: model.objects.select_related(). if you get nothing instead of what is returned by .all() then there is an issue with the data for that app

Try v0.4.2 which might help but theres not much else i can do.