在Django REST框架中,如果你发现自定义用户模型上的UniqueConstraint不起作用,可能是由于以下几个原因: 基础概念 UniqueConstraint是Django ORM中的一个约束,用于确保数据库表中的某些字段组合是唯一的。这在创建用户模型时尤其重要,以确保用户名或电子邮件地址的唯一性。
(IntegrityError)EN错误: No module named 模块名称 找不到模块，需要将模块添加到Python的搜索目录中。
违反唯一性约束如果在执行migrations文件时报错,报错信息为“django.db.utils.IntegrityError: UNIQUE constraint failed”,说明违反了唯一性约束。请检查数据是否存在重复项,或者修改唯一性约束。总结:Django数据迁移失败的原因有很多种,需要根据错误信息进行具体分析。在遇到迁移失败时,首先要仔细阅读错误信息,了解失败的原因。
from django.db import IntegrityError except IntegrityError as e: if 'unique constraint' in e.message: # or e.args[0] from Django 1.10 #do something 是的,您可以更精确,但有问题的情况UNIQUE failed很有可能。
instance=self.design, ) # EXPECTED BEHAVIOR self.assertFalse(formset.is_valid()) with self.assertRaisesMessage(ValueError, "didn't validate"): formset.save() # ACTUAL BEHAVIOR self.assertTrue(formset.is_valid()) with self.assertRaisesMessage(IntegrityError, "UNIQUE constraint failed"): formset...
(symbol=json_obj['order_id'], amount= json_obj['amnount']) try: order.save() except IntegrityError as exception: if 'UNIQUE constraint failed' in exception.args[0]: print('duplicate order id => skip this') continue一切正常,但是当我将 @transaction.atomic 装饰器添加到我的函数时,一切...
Django 联合唯一UniqueConstraint 1 2 3 4 5 6 7 8 9 10 from django.db import models class UserAttention(models.Model): watcher = models.ForeignKey('user.User', on_delete=models.CASCADE, related_name="attention") goal = models.ForeignKey('goal.Goal', on_delete=models.CASCADE, related_name...
I have created a custom model on django to create users and superuser, and now when i try to create a superuser, i get the following error django.db.utils.IntegrityError: UNIQUE constraint failed: profiles_api_userprofile.id models.py: from django.db import models from django.contrib.auth...
sqlite3.IntegrityError:UNIQUE constraintfailed:auth_user.username The above exception was the direct cause of the followingexception:Traceback (most recent call last): File"manage.py", line22,in<module>execute_from_command_line(sys.argv)
Hi I am trying to create a form with parent-child models using python Django Inlineformset_factory but when I am trying to update the child, its giving me unique constraint error. Here I am sharing my model code, forms code, views code. I am trying to solve this issue since last two...