我有一个CompanyRanking模型：

class CompanyRanking():
    """Company ranking model.

    Rankin hold a top based on minutes usage for user.
    """

    company = models.ForeignKey(
        'companies.company',
        on_delete=models.CASCADE,
        null=True,
        related_name='ranking'
    )

    user = models.ForeignKey(
        'users.user',
        on_delete=models.CASCADE,
        null=True,
        related_name='ranking_position'
    )

    extra_data = models.JSONField(
        null=True,
        blank=True
    )

我需要创建另一个模型，它包含与CompanyRanking相同的信息，但与另一个表（CompanyBatchByDate）有额外的关系，我在该表中获取日期以过滤用户的点数并显示其他排名。

class CompanyRankingByBatch(CompanyRanking):
    """
    Company ranking model based
    on batch.
    """

    batch = models.ForeignKey(
        'companies.CompanyBatchByDate',
        on_delete=models.SET_NULL,
        null=True,
        related_name='ranking_by_batch',
    )

class CompanyBatchByDate():
    """
    Company ranking model based
    on batch.
    """

    company = models.ForeignKey(
        'companies.company',
        on_delete=models.CASCADE,
        null=True,
        related_name='batch_by_date'
    )

    initial_date = models.DateField(
        null=True,
        blank=True,
        help_text='Date when the batch start'
    )

    finish_date = models.DateField(
        null=True,
        blank=True,
        help_text='Date when the batch finish'
    )

    is_active = models.BooleanField(
        default=True,
        help_text='Batch that will be used to calculate the ranking'
    )

    name = models.CharField(
        max_length=255,
        null=True,
        blank=True,
        help_text='Name of the batch'
    )

问题是，我希望能够拥有user - companyrankingbybatch关系的不同related_name，并希望独立于CompanyRanking更新此模型字段。
我已经尝试过通过添加parent_link = False来删除由django创建的一对一关系，这是因为继承。

companyranking_ptr = models.OneToOneField(
        'companies.CompanyRanking',
        on_delete=models.SET_NULL,
        parent_link=False,
        primary_key=False,
        null=True,
    )