方式一:
class Boy(models.Model):
username=models.CharField(max_length=16)
class Girl(models.Model):
username=models.CharField(max_length=16)
b=models.ManyToManyField("Boy")
方式er
class BTG(models.Model):
b_id=models.ForeignKey("Boy")
g_id=models.ForeignKey("Girl")
class Boy(models.Model):
username=models.CharField(max_length=16)
class Girl(models.Model):
username=models.CharField(max_length=16)