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models: 3.0 字段不可重复

04 Nov 2016

使用unique=True来保证字段内容不重复

# model.py中的内容
*******************************
class Getdata(models.Model):
    title = models.CharField(max_length=255, unique=True)
    state = models.CharField(max_length=2, choices=STATE, default="0")
    name = models.ForeignKey(School)
    created_by = models.ForeignKey(profile)
*******************************
# 其中title是不会重复的

stackoverflow answer

在Meta元类中使用unique_together来保证字段组合不重复

class Getdata(models.Model):
    title = models.CharField(max_length=255)
    state = models.CharField(max_length=2, choices=STATE, default="0")
    name = models.ForeignKey(School)
    created_by = models.ForeignKey(profile)
    class Meta:
        unique_together = ["title", "state", "name"]

unique_together django document