Django模型字段与功能

Question

有可能吗？我想比较两个字段并将得分返回到bet_score字段。

class Tabela(models.Model):
    score1= models.IntegerField(max_length=3)
    score2 = models.IntegerField(max_lenght=3)
    bet_score= models.IntegerField(defaults=bet_score())


    def bet_score(self):
        if (self.score1> self.score2 ):
            return 1
        elif (self.score1== self.score2 ):
            return 0
        else:
            return 2

Answer 1

如果你想在模型上存储这类东西，我认为你最好的选择是覆盖保存方法：

class Tabela(models.Model):
    score1= models.IntegerField(max_length=3)
    score2 = models.IntegerField(max_lenght=3)
    bet_score= models.IntegerField()

    def save(self, *args, **kwargs):
        if (self.score1 > self.score2 ):
            self.bet_score = 1
        elif (self.score1 == self.score2 ):
            self.bet_score = 0
        else:
            self.bet_score = 2
        super(Tabela, self).save(*args, **kwargs)

查看the docs了解详情。