class HmsMedicine(models.Model):
id = models.IntegerField(primary_key=True)
medicine_name = models.CharField(max_length=100)
price = models.IntegerField(max_length=6)
class HmsBilling(models.Model):
id = models.IntegerField(primary_key=True)
regid = models.ForeignKey(HmsPatient, db_column='regid')
medicine = models.ForeignKey(HmsMedicine, db_column='medicine')
quantity = models.IntegerField()
rate = models.IntegerField()
我想在rate
字段中有price
字段的值。你知道吗
这将为您提供id=5的账单的价格(请参见this link以获取有关选择的参考)
更好:
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