如何在用户名字段中插入id

你可以用 hooks 为了达到这个目的。

可能是这样的(未测试):

from django.db import models

  class User(models.Model):
    email = model.EmailField()
    username = models.CharField(max_length=80)

    def save(self):
      if not self.id:
           self.username = ''
           super(User, self).save()
      self.username = "%i%s" % (self.id, self.email)
      super(User, self).save()