Error in Django when i use filter(sites__id__exac=...) -


i have 4 classes:

class a(models.model):     field1 = models.booleanfield(default = true)      class meta:         abstract = true   class b(models.model):     field2 = models.booleanfield(default = true)     sites = models.manytomanyfield(site)      class meta:         abstract = true  class c(a,b):     field3 = models.booleanfield(default = true)      class meta:         abstract = true

and

class d(c):     field4 = models.booleanfield(default = true)

only class d in models.py in app. others imported diffrent files. fields of classess anb b being used in many models. created class d because want have generic admin panel django.

however, if use code:

obj = d() model_class = obj.__class__ items = model_class.objects.filter(sites__id__exac=1)

i error:

join on field 'id' not permitted. did misspell 'exac' lookup type?

why?

you're missing few letters:

https://docs.djangoproject.com/en/1.3/ref/models/querysets/#exact

more importantly, shouldn't need __exact on id field, do:

items = model_class.objects.filter(sites__id=1)

or

items = model_class.objects.filter(sites__id__in=[1])

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