class Social(models.Model):
    name = models.CharField(verbose_name="текст ссылки", max_length=64, default=None)
    link = models.CharField(verbose_name="ссылка", max_length=64, default=None)

class AboutMe(SingletonModel):

    content = HTMLField()
    inst = models.OneToOneField(Social, verbose_name="Истаграм", on_delete=models.CASCADE, default=Social())
    vk = models.OneToOneField(Social, verbose_name="ВКонтакте", on_delete=models.CASCADE, default=Social())
    tg = models.OneToOneField(Social, verbose_name="Телеграмм", on_delete=models.CASCADE, default=Social())
    youtube = models.OneToOneField(Social, verbose_name="YouTube", on_delete=models.CASCADE, default=Social())