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我有以下 Django 模型：

class Video(models.Model):

    # ... snip ...

    # Entities detected using face tracking                                                                                                                                                                  
    faces = models.ManyToManyField(Entity, related_name="facevids", blank=True)
    # Entities detected using speaker diarisation                                                                                                                                                            
    speakers = models.ManyToManyField(Entity, related_name="speakervids", blank=True)
    # Entities detected by extracting names from metadata and ocr                                                                                                                                            
    names = models.ManyToManyField(Entity, related_name="namevids", blank=True)
    # Entities detected using logo detection                                                                                                                                                                 
    logos = models.ManyToManyField(Entity, related_name="logovids", blank=True)

class Entity(models.Model):

    entity_id = models.CharField(primary_key = True, max_length = 100)

我想添加一个自定义管理器，Entity以便我可以以与或allvids相同的方式访问 ManyToMany 自定义字段。facevidsspeakervids

到目前为止，我已经研究出如何访问和联合查询集做这样的事情

@property
def allvids(self):
    return (self.facevids.get_query_set() | self.speakervids.get_query_set() |
            self.namevids.get_query_set() | self.logovids.get_query_set()).distinct()

但这会返回一个查询集对象而不是一个 Manager，这意味着访问与allvids,facevids等不同speakervids。我希望最终用户不需要了解实现和访问allvids与其他 Manager 字段完全相同.

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