models -- 一对一关系

class Author(models.Model):
    name = models.CharField(max_length=30)

    def __str__(self):
        return self.name

class AuthorDetail(models.Model):
    sex = models.BooleanField(max_length=1, choices=((0, '男'), (1, '女'),))
    email = models.EmailField()
    address = models.CharField(max_length=50)
    birthday = models.DateField()
    author = models.OneToOneField(Author)

class Author(models.Model):
    name = models.CharField(max_length=30)

    def __str__(self):
        return self.name

class AuthorDetail(models.Model):
    sex = models.BooleanField(max_length=1, choices=((0, '男'), (1, '女'),))
    email = models.EmailField()
    address = models.CharField(max_length=50)
    birthday = models.DateField()
    author = models.ForeignKey('Author', unique=True)

建立一对一关系的两种实现方式，一种是使用OneToOneField，一种是ForeignKey与unique=True组合