gistfile1.txt

Problem Statement:
a user belongs to one/many user_groups and one/many user_types
a channel belongs to one/many user_groups and one/many user_types 
a video belongs to one/many channels
when a user logs in, he should be showed video from the channel which matches his user_group and user_type.

Solution done in django shell:
uobj = UserProfile.objects.get(user__username = "**")
ug = uobj.belongs_to_user_group
ut = uobj.belongs_to_user_type.all()
Video.objects.filter(belongs_to_channel__belongs_to_group__in=ug, belongs_to_channel__available_to_user_type__in = ut).distinct()