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我只想要下面模型的一个实例。如何在代码中强制执行此操作?

class Employer(models.Model):
    name=models.CharField(max_length=50, verbose_name = "Employer's Name")
    pin =models.CharField(max_length=50, verbose_name ="Employer's PIN")

    def __unicode__(self):
        return self.name
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1 回答 1

1

尝试这个:

class Employer(models.Model):
    name = models.CharField(max_length=50, verbose_name="Employer's Name")
    pin = models.CharField(max_length=50, verbose_name="Employer's PIN")

    def __unicode__(self):
        return self.name

    class Meta:
        unique_together = ('name', 'pin')

来自Django 模型元选项

于 2012-12-19T18:14:00.347 回答