问题描述
我遇到了有史以来最奇怪的错误.我有一个 Person 模型
I've been getting the most weird error ever. I have a Person model
class Person(models.Model):
user = models.OneToOneField(User, primary_key=True)
facebook_id = models.CharField(max_length=225, unique=True, null=True, blank=True)
twitter_id = models.CharField(max_length=225, unique=True, null=True, blank=True)
suggested_person = models.BooleanField(default=False)
我最近添加了 twitter_id 字段.当我访问 Django 管理页面并尝试将人"更改为建议的人时,我收到以下错误:
I recently added the twitter_id field. When I access the Django admin page, and try to change the 'person' into a suggested_person, I get the following error:
Person with this Twitter id already exists.
我觉得这个错误非常奇怪,因为 Facebook_id 字段的设计方式与 Twitter_id 字段完全相同.
I find this error to be extremely strange because the Facebook_id field is designed the exact same way as the Twitter_id field.
这可能是什么原因?
推荐答案
既然你有 null=True, blank=True
和 unique=True
,django 正在考虑 None
或空白作为唯一条目.移除唯一性约束并处理代码中的唯一性部分.
Since you have null=True, blank=True
and unique=True
, django is considering None
or blank as a unique entry. Remove the unique constraint and handle the uniqueness part in the code.
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