Question

在我第一次这样做之前，我从未处理过文件上传，而是按照youtube上的说明进行操作。显然，当我在我的模型中添加FileField并尝试迁移时，它给了我一些例外，我不知道如何解决它。我试图删除参数，但它仍然给我一个错误。请帮助我（我使用django btw）

models.py

class Profile(models.Model):
    user = models.OneToOneField(User, on_delete=models.CASCADE)
    email = models.TextField(max_length=500, blank=True)
    contact_number = models.CharField(max_length=30, blank=True)
    profile_photo = models.FileField(null=True,blank=True)

@receiver(post_save, sender=User)
def create_user_profile(sender, instance, created, **kwargs):
    if created:
        Profile.objects.create(user=instance)

@receiver(post_save, sender=User)
def save_user_profile(sender, instance, **kwargs):
    instance.profile.save()

然后出现了这个我无法理解的错误

Running migrations:
  Applying bartr.0011_profile_profile_photo...Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/django/db/backends/utils.py", line 64, in execute
    return self.cursor.execute(sql, params)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/django/db/backends/sqlite3/base.py", line 337, in execute
    return Database.Cursor.execute(self, query, params)
sqlite3.IntegrityError: NOT NULL constraint failed: bartr_profile.profile_photo

sqlite3.IntegrityError：NOT NULL约束失败

0 个答案: