通用关系不能反映在Django的迁移中吗？

Question

I'm trying to add a GenericRelation field to the Notification model to my "Bond" model. The issue is that whenever I run makemigrations, this field does not get acknowledged. What could be the issue?

Error:

django.core.exceptions.FieldError: Field 'content_object' does not generate an automatic reverse relation and therefore cannot be used for reverse querying. If it is a GenericForeignKey, consider adding a GenericRelation.

class Bond(models.Model):
    user = models.ForeignKey(User, on_delete=models.CASCADE)
    follower = models.ForeignKey(User, on_delete=models.CASCADE, related_name="follower")
    bond_created = models.DateTimeField(default=now)
    notifications = GenericRelation(Notification)

class Notification(models.Model):

    #337, 777, 765, 843, 124
    notification_type = models.PositiveIntegerField()
    user = models.ForeignKey(User, on_delete=models.CASCADE)
    content_type = models.ForeignKey(ContentType, on_delete=models.CASCADE)
    object_id = models.PositiveIntegerField()
    content_object = GenericForeignKey('content_type', 'object_id')

Answer 1

Try to place the Notification model above the Bond model in models.py. I can't say that it will solve the problem,but you can try. And if this also not work,try to first delete all new fields then do makemigrations migrate then again add those new fields and do makemigrations and migrate. Hope this will work.

Answer 2

尝试为相关模型添加唯一的related_query_name ，请参阅。

notifications = GenericRelation(Notification, related_query_name='bond')