How to count how many times foreignkey object can be used

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伪装坚强ぢ
伪装坚强ぢ 2021-02-19 17:07

My models.py

class Timing(models.Model):
    time = models.CharField(max_length=250)
    count = models.IntegerField(default=0) # max=20

class Ticket(models.Mode         


        
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