django foriegn key filter sample
student_user = User.objects.get(id=user_id) available_subjects = Subject.objects.exclude(subject_grade__student__user=student_user) # My ans enrolled_subjects = SubjectGrade.objects.filter(student__user=student_user) context.update({'available_subjects': available_subjects, 'student_user': student_user, 'request':request, 'enrolled_subjects': enrolled_subjects})
Source: stackoverflow.com