假设我有两个模型,一个Customer用于Payment. 每个月我customer都应该在每个月的 15 号之前付款。构建模型以便轻松获得当月未付款的客户报告的最佳方法是什么?客户型号:class CustomerModel(models.Model): first_name = models.TextField() last_name = models.TextField() email = models.EmailField()支付模式:class Payment(models.Model): customer = models.ForeignKey( Customer, on_delete=models.SET_NULL, null=True) amount = models.FloatField() date_received = models.DateField(auto_now=False)
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