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Oct 20th, 2017
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  1. class Concert(models.Model):
  2. ...
  3. range = models.ManyToManyField(Range, blank=True)
  4.  
  5. class Range(models.Model):
  6. begin = models.DateTimeField()
  7. end = models.DateTimeField()
  8.  
  9. def get_queryset(self):
  10. return Concert.objects.filter(range__begin__gt=timezone.datetime(2014, 1, 1), range__end__lt=timezone.datetime(2016, 1, 1))
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